Stephen A. Montzka

Position

Research Chemist

Department

NOAA ESRL Global Monitoring Laboratory

Education

Ph.D., University of Colorado, Boulder, 1988

Contact

303-497-6657

Stephen.A.Montzka@noaa.gov

Location

NOAA David Skaggs Research Center, 2D113

Also on the web

Halocarbons & other Atmospheric Trace Species Group (HATS)

Research Interests

I am currently a Research Chemist at NOAA’s Global Monitoring Laboratory in Boulder Colorado. My primary research interests revolve around understanding changes in the chemical composition of the global atmosphere, particularly related to ozone-depleting substances, greenhouse gases, and hazardous air pollutants; identifying the role of natural and human-related influences on atmospheric composition; diagnosing variability in the atmosphere's oxidizing capacity, in terrestrial photosynthesis, and in stratosphere-troposphere exchange; quantifying fluxes of trace gases from the United States; and effectively communicating scientific results to interested parties nationally and internationally, including the public and policymakers.

Current Research

From air samples collected on an ongoing basis from surface sites and aircraft, and that are analyzed in our Boulder labs to determine concentrations of over 40 different trace gases, insights into science- and policy-relevant questions can be gleaned. Data obtained from the analysis of these samples via high-precision gas chromatography coupled to mass spectrometry have been used recently for identifying an increase in emissions of CFC-11, an ozone-depleting substance banned by the Montreal Protocol in 2010. This renewed emission increase persisted through 2018 but now appears to be on the decline. The data we provide from this program and from other short-term large-scale projects (e.g.,NASA’s Atmospheric Tomography Experiment) have also been used in recent studies for investigating the influence of increasing concentrations of short-lived gases not controlled by the Montreal Protocol on the ozone layer (e.g., dichloromethane), 3) diagnosing the global and relative hemispheric concentration of the hydroxyl radical over time and estimating the impact of those changes on the global budget of methane, and 4) improving our understanding of regional and global budgets of carbonyl sulfide, which may enhance our understanding of CO2 uptake by terrestrial photosynthesis.

In addition to studying atmospheric changes on global scales, the U.S.-centric sampling program managed by the Carbon Cycle Group and NOAA has allowed investigations into national-scale issues. Data obtained from this regional network have been used to quantify national-scale emissions of ozone-depleting substances and non-CO2 greenhouse gases that show how the Montreal Protocol has substantially added to the reduction in U.S. total greenhouse gas emissions in recent years. These data have also been used to improve the quantification and attribution of atmospheric impacts associated with oil and gas exploration and development (including hydraulic fracturing) and enhance our understanding of continental-scale sources and sinks of carbonyl sulfide, a trace gas whose concentration changes over land to appear closely linked to terrestrial photosynthesis.

Figure showing annual global CFC-11 emissions derived from NOAA/GML atmospheric data (red bold line with upper and lower bounds indicated by thin red lines) and two different expectations: derived using the atmospheric data before 2020 as a guide (brown dashed line), and derived with an inventory model of use and expected emissions (blue shaded region). Neither expectation explains the uptick in emissions that appeared after 2010, which are believed to suggest renewed production in violation of the Montreal Protocol. After we announced this unusual finding in 2018, global emissions rapidly declined.

Honors and Awards

2020 U.S. Department of Commerce Gold Medal
2019 NOAA/OAR Dr. Daniel L. Albritton Outstanding Science Communicator Award
2019-2020 Clarivate Web of Science Highly Cited Researcher, Geosciences
2019 NASA Group Achievement Award, ATom mission
2019 Colorado Governor’s Award for High-Impact Research
2018 Named a Fellow of the American Geophysical Union
2016 Elected Member of the International Ozone Commission
2016 Excellence in Refereeing Citation by GRL
2015 Nominated into the Montreal Protocol's Who's Who
2014 Colorado Governor's Award for High-Impact Research, Team Member
2012 Excellence in Refereeing Citation by JGR-A
2008 NOAA Administrator Award
2008 U.S. Department of Commerce Silver Medal
2007 Excellence in Refereeing Citation by GRL
2007 U.S. EPA Stratospheric Ozone Protection Award
2000 NOAA Research Employee of the Year
1997 U.S. Department of Commerce Silver Medal
1996-2009 Awarded NOAA Outstanding Scientific Paper of the Year Award (nine times)
1994, 1995, 2003 NASA Group Achievement Awards for separate field missions.
1992, 1993, 1997 U.S. Department of Commerce, NOAA Certificate of Recognition.
1989, 1990 National Research Council Post-Doctorate Fellowships
1983, 1984 Colorado Doctoral Fellowships
1982 Phi Beta Kappa

View Publications

Montzka SA; Dutton GS; Portmann RW; Chipperfield MP; Davis S; Feng W; Manning AJ; Ray E; Rigby M; Hall BD. (Feb 2021). A decline in global CFC-11 emissions during 2018-2019. Nature , 590(7846), 428-+. 10.1038/s41586-021-03260-5
Aydin, M; Britten, GL; Montzka, SA; Buizert, C; Primeau, F; Petrenko, V; Battle, MB; Nicewonger, MR; Patterson, J; Hmiel, B; Saltzman, ES. (Aug 2020). Anthropogenic Impacts on Atmospheric Carbonyl Sulfide Since the 19th Century Inferred From Polar Firn Air and Ice Core Measurements. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 125(16). 10.1029/2020JD033074
Laube JC; Elvidge ECL; Adcock KE; Baier B; Brenninkmeijer CAM; Chen H; Droste ES; Grooss J-U; Heikkinen P; Hind AJ. (Aug 2020). Investigating stratospheric changes between 2009 and 2018 with halogenated trace gas data from aircraft, AirCores, and a global model focusing on CFC-11. Atmospheric Chemistry and Physics , 20(16), 9771-9782. 10.5194/acp-20-9771-2020
Meinshausen, M; Nicholls, ZRJ; Lewis, J; Gidden, MJ; Vogel, E; Freund, M; Beyerle, U; Gessner, C; Nauels, A; Bauer, N; Canadell, JG; Daniel, JS; John, A; Krummel, PB; Luderer, G; Meinshausen, N; Montzka, SA; Rayner, PJ; Reimann, S; Smith, SJ; van den Berg, M; Velders, GJM; Vollmer, MK; Wang, RHJ. (Aug 2020). The shared socio-economic pathway (SSP) greenhouse gas concentrations and their extensions to 2500. GEOSCIENTIFIC MODEL DEVELOPMENT , 13(8). 10.5194/gmd-13-3571-2020
Claxton, T; Hossaini, R; Wilson, C; Montzka, SA; Chipperfield, MP; Wild, O; Bednarz, EM; Carpenter, LJ; Andrews, SJ; Hackenberg, SC; Muhle, J; Oram, D; Park, S; Park, MK; Atlas, E; Navarro, M; Schauffler, S; Sherry, D; Vollmer, M; Schuck, T; Engel, A; Krummel, PB; Maione, M; Arduini, J; Saito, T; Yokouchi, Y; ODoherty, S; Young, D; Lunder, C. (Jun 2020). A Synthesis Inversion to Constrain Global Emissions of Two Very Short Lived Chlorocarbons: Dichloromethane, and Perchloroethylene. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 125(12). 10.1029/2019JD031818
Lickley, M; Solomon, S; Fletcher, S; Velders, GJM; Daniel, J; Rigby, M; Montzka, SA; Kuijpers, LJM; Stone, K. (Mar 2020). Quantifying contributions of chlorofluorocarbon banks to emissions and impacts on the ozone layer and climate. NATURE COMMUNICATIONS , 11(1). 10.1038/s41467-020-15162-7
Baier BC; Sweeney C; Choi Y; Davis KJ; DiGangi JP; Feng S; Fried A; Halliday H; Higgs J; Lauvaux T. (Jan 2020). Multispecies Assessment of Factors Influencing Regional CO2 and CH4 Enhancements During the Winter 2017 ACT-America Campaign. Journal of Geophysical Research: Atmospheres , 125(2). 10.1029/2019JD031339
Ray, EA; Portmann, RW; Yu, PF; Daniel, J; Montzka, SA; Dutton, GS; Hall, BD; Moore, FL; Rosenlof, KH. (Jan 2020). The influence of the stratospheric Quasi-Biennial Oscillation on trace gas levels at the Earths surface. NATURE GEOSCIENCE , 13(1). 10.1038/s41561-019-0507-3
Dhomse, SS; Feng, W; Montzka, SA; Hossaini, R; Keeble, J; Pyle, JA; Daniel, JS; Chipperfield, MP. (Dec 2019). Delay in recovery of the Antarctic ozone hole from unexpected CFC-11 emissions. NATURE COMMUNICATIONS , 10. 10.1038/s41467-019-13717-x
Arndt, DS; Blunden, J; Dunn, RJH; Stanitski, DM; Gobron, N; Willett, KM; Sanchez-Lugo, A; Berrisford, P; Morice, C; Nicolas, JP; Carrea, L; Woolway, RI; Merchant, CJ; Dokulil, MT; de Eyto, E; DeGasperi, CL; Korhonen, J; Marszelewski, W; May, L; Paterson, AM; Rusak, JA; Schladow, SG; Schmid, M; Verburg, P; Watanabe, S; Weyhenmeyer, GA; King, AD; Donat, MG; Christy, JR; Po-Chedley, S; Mears, CR; Haimberger, L; Covey, C; Randel, W; Noetzli, J; Biskaborn, BK; Christiansen, HH; Isaksen, K; Schoeneich, P; Smith, S; Vieira, G; Zhao, L; Streletskiy, DA; Robinson, DA; Pelto, M; Berry, DI; Bosilovich, MG; Simmons, AJ; Mears, C; Ho, SP; Bock, O; Zhou, X; Nicolas, J; Vose, RS; Adler, R; Gu, G; Becker, A; Yin, X; Tye, MR; Blenkinsop, S; Bosilovich, MG; Durre, I; Ziese, M; Collow, ABM; Rustemeier, E; Foster, MJ; Di Girolamo, L; Frey, RA; Heidinger, AK; Sun-Mack, S; Phillips, C; Menzel, WP; Stengel, M; Zhao, G; Kim, H; Rodell, M; Li, B; Famiglietti, JS; Scanlon, T; van der Schalie, R; Preimesberger, W; Reimer, C; Hahn, S; G. (Sep 2019). INTRODUCTION. BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY , 100(9).
Hu, L; Andrews, AE; Thoning, KW; Sweeney, C; Miller, JB; Michalak, AM; Dlugokencky, E; Tans, PP; Shiga, YP; Mountain, M; Nehrkorn, T; Montzka, SA; McKain, K; Kofler, J; Trudeau, M; Michel, SE; Biraud, SC; Fischer, ML; Worthy, DEJ; Vaughn, BH; White, JWC; Yadav, V; Basu, S; van der Velde, IR. (Jun 2019). Enhanced North American carbon uptake associated with El Nino. SCIENCE ADVANCES , 5(6). 10.1126/sciadv.aaw0076
Rigby, M; Park, S; Saito, T; Western, LM; Redington, AL; Fang, X; Henne, S; Manning, AJ; Prinn, RG; Dutton, GS; Fraser, PJ; Ganesan, AL; Hall, BD; Harth, CM; Kim, J; Kim, KR; Krummel, PB; Lee, T; Li, S; Liang, Q; Lunt, MF; Montzka, SA; Muhle, J; ODoherty, S; Park, MK; Reimann, S; Salameh, PK; Simmonds, P; Tunnicliffe, RL; Weiss, RF; Yokouchi, Y; Young, D. (May 2019). Increase in CFC-11 emissions from eastern China based on atmospheric observations. NATURE , 569(7757). 10.1038/s41586-019-1193-4
Lan, X; Tans, P; Sweeney, C; Andrews, A; Dlugokencky, E; Schwietzke, S; Kofler, J; McKain, K; Thoning, K; Crotwell, M; Montzka, S; Miller, BR; Biraud, SC. (May 2019). Long-Term Measurements Show Little Evidence for Large Increases in Total US Methane Emissions Over the Past Decade. GEOPHYSICAL RESEARCH LETTERS , 46(9). 10.1029/2018GL081731
Hossaini, R; Atlas, E; Dhomse, SS; Chipperfield, MP; Bernath, PF; Fernando, AM; Muhle, J; Leeson, AA; Montzka, SA; Feng, WH; Harrison, JJ; Krummel, P; Vollmer, MK; Reimann, S; ODoherty, S; Young, D; Maione, M; Arduini, J; Lunder, CR. (Feb 2019). Recent Trends in Stratospheric Chlorine From Very Short-Lived Substances. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 124(4). 10.1029/2018JD029400
Naus, S; Montzka, SA; Pandey, S; Basu, S; Dlugokencky, EJ; Krol, M. (Jan 2019). Constraints and biases in a tropospheric two-box model of OH. ATMOSPHERIC CHEMISTRY AND PHYSICS , 19(1). 10.5194/acp-19-407-2019
Li, PY; Muhle, J; Montzka, SA; Oram, DE; Miller, BR; Weiss, RF; Fraser, PJ; Tanhua, T. (Jan 2019). Atmospheric histories, growth rates and solubilities in seawater and other natural waters of the potential transient tracers HCFC-22, HCFC-141b, HCFC-142b, HFC-134a, HFC-125, HFC-23, PFC-14 and PFC-116. OCEAN SCIENCE , 15(1). 10.5194/os-15-33-2019
Reimann, S, JW Elkins, PJ Fraser, BD Hall, MJ Kurylo, E Mahieu, SA Montzka, RG Prinn, M Rigby, PG Simmonds and RF Weiss. (Nov 2018). Observing the atmospheric evolution of ozone-depleting substances. COMPTES RENDUS GEOSCIENCE , 350(7). 10.1016/j.crte.2018.08.008
Butler, R, PI Palmer, L Feng, SJ Andrews, EL Atlas, LJ Carpenter, V Donets, NRP Harris, SA Montzka, LL Pan, RJ Salawitch and SM Schauffler. (Sep 2018). Quantifying the vertical transport of CHBr3 and CH2Br2 over the western Pacific. ATMOSPHERIC CHEMISTRY AND PHYSICS , 18(17). 10.5194/acp-18-13135-2018
Whelan, ME, ST Lennartz, TE Gimeno, R Wehr, G Wohlfahrt, YT Wang, LMJ Kooijmans, TW Hilton, S Belviso, P Peylin, R Commane, W Sun, HL Chen, L Kuai, I Mammarella, K Maseyk, M Berkelhammer, KF Li, D Yakir, A Zumkehr, Y Katayama, J Ogee, FM Spielmann, F Kitz, B Rastogi, J Kesselmeier, J Marshall, KM Erkkila, L Wingate, LK Meredith, W He, R Bunk, T Launois, T Vesala, JA Schmidt, CG Fichot, U Seibt, S Saleska, ES Saltzman, SA Montzka, JA Berry and JE Campbell. (Jun 2018). Reviews and syntheses: Carbonyl sulfide as a multi-scale tracer for carbon and water cycles. BIOGEOSCIENCES , 15(12). 10.5194/bg-15-3625-2018
Montzka, SA, GS Dutton, PF Yu, E Ray, RW Portmann, JS Daniel, L Kuijpers, BD Hall, D Mondeel, C Siso, D Nance, M Rigby, AJ Manning, L Hu, F Moore, BR Miller and JW Elkins. (May 2018). An unexpected and persistent increase in global emissions of ozone-depleting CFC-11. NATURE , 557(7705). 10.1038/s41586-018-0106-2
Li, S, S Park, JY Lee, KJ Ha, MK Park, CO Jo, H Oh, J Muhle, KR Kim, SA Montzka, S ODoherty, PB Krummel, E Atlas, BR Miller, F Moore, RF Weiss and SC Wofsy. (Mar 2018). Chemical evidence of inter-hemispheric air mass intrusion into the Northern Hemisphere mid-latitudes. SCIENTIFIC REPORTS , 8. 10.1038/s41598-018-22266-0
Campbell, JE, ME Whelan, JA Berry, TW Hilton, A Zumkehr, J Stinecipher, Y Lu, A Kornfeld, U Seibt, TE Dawson, SA Montzka, IT Baker, S Kulkarni, Y Wang, SC Herndon, MS Zahniser, R Commane and ME Loik. (Dec 2017). Plant Uptake of Atmospheric Carbonyl Sulfide in Coast Redwood Forests. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES , 122(12). 10.1002/2016JG003703
Liang, Q, MP Chipperfield, EL Fleming, NL Abraham, P Braesicke, JB Burkholder, JS Daniel, S Dhomse, PJ Fraser, SC Hardiman, CH Jackman, DE Kinnison, PB Krummel, SA Montzka, O Morgenstern, A McCulloch, J Muhle, PA Newman, VL Orkin, G Pitari, RG Prinn, M Rigby, E Rozanov, A Stenke, F Tummon, GJM Velders, D Visioni and RF Weiss. (Nov 2017). Deriving Global OH Abundance and Atmospheric Lifetimes for Long-Lived Gases: A Search for CH3CCl3 Alternatives. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 122(21). 10.1002/2017JD026926
Hu, L, SA Montzka, SJ Lehman, DS Godwin, BR Miller, AE Andrews, K Thoning, JB Miller, C Sweeney, C Siso, JW Elkins, BD Hall, DJ Mondeel, D Nance, T Nehrkorn, M Mountain, ML Fischer, SC Biraud, HL Chen and PP Tans. (Aug 2017). Considerable contribution of the Montreal Protocol to declining greenhouse gas emissions from the United States. GEOPHYSICAL RESEARCH LETTERS , 44(15). 10.1002/2017GL074388
Arndt, DS, J Blunden, RJH Dunn, AP Aaron-Morrison, A Abdallah, SA Ackerman, R Adler, EJ Alfaro, RP Allan, R Allan, LA Alvarez, LM Alves, JA Amador, LM Andreassen, D Arce, A Arguez, DS Arndt, NM Arzhanova, J Augustine, E Awatif, C Azorin-Molina, J Baez, MU Bardin, J Barichivich, MO Baringer, S Barreira, S Baxter, HE Beck, A Becker, KM Bedka, MJ Behrenfeld, GD Bell, M Belmont, A Benedetti, GH Bernhard, P Berrisford, DI Berry, ML Bettolli, US Bhatt, M Bidegain, B Biskaborn, P Bissolli, J Bjerke, ES Blake, J Blunden, MG Bosilovich, O Boucher, D Boudet, JE Box, T Boyer, GO Braathen, J Brimelow, DH Bromwich, R Brown, S Buehler, ON Bulygina, D Burgess, B Calderon, SJ Camargo, JD Campbell, J Cappelen, P Caroff, L Carrea, BR Carter, DP Chambers, E Chandler, MD Cheng, HH Christiansen, JR Christy, D Chung, ES Chung, KR Clem, CAS Coelho, M Coldewey-Egbers, S Colwell, OR Coo. (Aug 2017). State of the Climate in 2016. BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY , 98(8). 10.1175/2017BAMSStateoftheClimate.1
Zhang, G, B Yao, MK Vollmer, SA Montzka, J Muhle, RF Weiss, S ODoherty, Y Li, SX Fang and S Reimann. (Jul 2017). Ambient mixing ratios of atmospheric halogenated compounds at five background stations in China. ATMOSPHERIC ENVIRONMENT , 160. 10.1016/j.atmosenv.2017.04.017
Hossaini, R, MP Chipperfield, SA Montzka, AA Leeson, SS Dhomse and JA Pyle. (Jun 2017). The increasing threat to stratospheric ozone from dichloromethane. NATURE COMMUNICATIONS , 8. 10.1038/ncomms15962
Yokouchi, Y, T Saito, JY Zeng, H Mukai and S Montzka. (Jun 2017). Seasonal variation of bromocarbons at Hateruma Island, Japan: implications for global sources. JOURNAL OF ATMOSPHERIC CHEMISTRY , 74(2). 10.1007/s10874-016-9333-9
Hilton, TW, ME Whelan, A Zumkehr, S Kulkarni, JA Berry, IT Baker, SA Montzka, C Sweeney, BR Miller and JE Campbell. (Jun 2017). Peak growing season gross uptake of carbon in North America is largest in the Midwest USA. NATURE CLIMATE CHANGE , 7(6). 10.1038/NCLIMATE3272
Meinshausen, M, E Vogel, A Nauels, K Lorbacher, N Meinshausen, DM Etheridge, PJ Fraser, SA Montzka, PJ Rayner, CM Trudinger, PB Krummel, U Beyerle, JG Canadell, JS Daniel, IG Enting, RM Law, CR Lunder, S ODoherty, RG Prinn, S Reimann, M Rubino, GJM Velders, MK Vollmer, RHJ Wang and R Weiss. (May 2017). Historical greenhouse gas concentrations for climate modelling (CMIP6). GEOSCIENTIFIC MODEL DEVELOPMENT , 10(5). 10.5194/gmd-10-2057-2017
Rigby, M, SA Montzka, RG Prinn, JWC White, D Young, S ODoherty, MF Lunt, AL Ganesan, AJ Manning, PG Simmonds, PK Salameh, CM Harth, J Muhle, RF Weiss, PJ Fraser, LP Steele, PB Krummel, A McCulloch and S Park. (May 2017). Role of atmospheric oxidation in recent methane growth. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA , 114(21). 10.1073/pnas.1616426114
Bruhwiler, LM, S Basu, P Bergamaschi, P Bousquet, E Dlugokencky, S Houweling, M Ishizawa, H-S Kim, R Locatelli, S Maksyutov, S Montzka, S Pandey, PK Patra, G Petron, M Saunois, C Sweeney, S Schwietzke, P Tans and EC Weatherhead. (Apr 2017). US CH4 emissions from oil and gas production: Have recent large increases been detected?. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 122(7). 10.1002/2016JD026157
Campbell, JE, JA Berry, U Seibt, SJ Smith, SA Montzka, T Launois, S Belviso, L Bopp and M Laine. (Apr 2017). Large historical growth in global terrestrial gross primary production. NATURE , 544(7648). 10.1038/nature22030
Jeong, S, XG Cui, DR Blake, B Miller, SA Montzka, A Andrews, A Guha, P Martien, RP Bambha, B LaFranchi, HA Michelsen, CB Clements, P Glaize and ML Fischer. (Jan 2017). Estimating methane emissions from biological and fossil-fuel sources in the San Francisco Bay Area. GEOPHYSICAL RESEARCH LETTERS , 44(1). 10.1002/2016GL071794
Fortems-Cheiney, A, M Saunois, I Pison, F Chevallier, P Bousquet, C Cressot, SA Montzka, PJ Fraser, MK Vollmer, PG Simmonds, D Young, S O'Doherty, RF Weiss, F Artuso, B Barletta, DR Blake, S Li, C Lunder, BR Miller, S Park, R Prinn, T Saito, LP Steele and Y Yokouchi. (Nov 2015). Increase in HFC-134a emissions in response to the success of the Montreal Protocol. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 120(22). 10.1002/2015JD023741
Commane, R, LK Meredith, IT Baker, JA Berry, JW Munger, SA Montzka, PH Templer, SM Juice, MS Zahniser and SC Wofsy. (Nov 2015). Seasonal fluxes of carbonyl sulfide in a midlatitude forest. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA , 112(46). 10.1073/pnas.1504131112
Ou-Yang, CF, CC Chang, SP Chen, C Chew, BR Lee, CY Chang, SA Montzka, GS Dutton, JH Butler, JW Elkins and JL Wang. (Nov 2015). Changes in the levels and variability of halocarbons and the compliance with the Montreal Protocol from an urban view. CHEMOSPHERE , 138. 10.1016/j.chemosphere.2015.06.070
Kuai, L, JR Worden, JE Campbell, SS Kulawik, KF Li, M Lee, RJ Weidner, SA Montzka, FL Moore, JA Berry, I Baker, AS Denning, HS Bian, KW Bowman, JJ Liu and YL Yung. (Oct 2015). Estimate of carbonyl sulfide tropical oceanic surface fluxes using Aura Tropospheric Emission Spectrometer observations. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 120(20). 10.1002/2015JD023493
Graziosi, F, J Arduini, F Furlani, U Giostra, LJM Kuijpers, SA Montzka, BR Miller, SJ ODoherty, A Stohl, P Bonasoni and M Maione. (Jul 2015). European emissions of HCFC-22 based on eleven years of high frequency atmospheric measurements and a Bayesian inversion method. ATMOSPHERIC ENVIRONMENT , 112. 10.1016/j.atmosenv.2015.04.042
Arndt, DS, J Blunden, KW Willett, AP Aaron-Morrison, SA Ackerman, JI Adamu, A Albanil, EJ Alfaro, R Allan, RB Alley, L Alvarez, LM Alves, JA Amador, LM Andreassen, J Antonov, S Applequist, A Arendt, J Arevalo, A Arguez, DS Arndt, V Banzon, J Barichivich, MO Baringer, S Barreira, S Baxter, J Bazo, A Becker, MJ Behrenfeld, GD Bell, A Benedetti, G Bernhard, P Berrisford, DI Berry, ML Bettolli, US Bhatt, M Bidegain, N Bindoff, P Bissolli, ES Blake, RC Blenman, J Blunden, NA Bond, M Bosilovich, JE Box, D Boudet, T Boyer, GO Braathen, DH Bromwich, LC Brown, R Brown, ON Bulygina, D Burgess, B Calderon, SJ Camargo, JD Campbell, J Cappelen, G Carrasco, B Carter, DP Chambers, E Chandler, F Chevallier, HH Christiansen, JR Christy, D Chung, P Ciais, KR Clem, CAS Coelho, JG Cogley, M Coldewey-Egbers, S Colwell, OR Cooper, L Copland, MF Cronin, J Crouch, SA Cunningham, SM Dav. (Jul 2015). STATE OF THE CLIMATE IN 2014. BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY , 96(7). 10.1175/2015BAMSStateoftheClimate.1
Hossaini, R, MP Chipperfield, A Saiz-Lopez, JJ Harrison, R von Glasow, R Sommariva, E Atlas, M Navarro, SA Montzka, W Feng, S Dhomse, C Harth, J Muhle, C Lunder, S O'Doherty, D Young, S Reimann, MK Vollmer, PB Krummel and PF Bernath. (Jun 2015). Growth in stratospheric chlorine from short-lived chemicals not controlled by the Montreal Protocol. GEOPHYSICAL RESEARCH LETTERS , 42(11). 10.1002/2015GL063783
Sweeney, C, A Karion, S Wolter, T Newberger, D Guenther, JA Higgs, AE Andrews, PM Lang, D Neff, E Dlugokencky, JB Miller, SA Montzka, BR Miller, KA Masarie, SC Biraud, PC Novelli, M Crotwell, AM Crotwell, K Thoning and PP Tans. (May 2015). Seasonal climatology of CO2 across North America from aircraft measurements in the NOAA/ESRL Global Greenhouse Gas Reference Network. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 120(10). 10.1002/2014JD022591
Montzka, SA, M McFarland, SO Andersen, BR Miller, DW Fahey, BD Hall, L Hu, C Siso and JW Elkins. (May 2015). Recent Trends in Global Emissions of Hydrochlorofluorocarbons and Hydrofluorocarbons: Reflecting on the 2007 Adjustments to the Montreal Protocol. JOURNAL OF PHYSICAL CHEMISTRY A , 119(19). 10.1021/jp5097376
Hossaini, R, MP Chipperfield, SA Montzka, A Rap, S Dhomse and W Feng. (Mar 2015). Efficiency of short-lived halogens at influencing climate through depletion of stratospheric ozone. NATURE GEOSCIENCE , 8(3). 10.1038/NGEO2363
Hu, L, SA Montzka, JB Miller, AE Andrews, SJ Lehman, BR Miller, K Thoning, C Sweeney, HL Chen, DS Godwin, K Masarie, L Bruhwiler, ML Fischer, SC Biraud, MS Torn, M Mountain, T Nehrkorn, J Eluszkiewicz, S Miller, RR Draxler, AF Stein, BD Hall, JW Elkins and PP Tans. (Jan 2015). US emissions of HFC-134a derived for 2008-2012 from an extensive flask-air sampling network. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 120(2). 10.1002/2014JD022617
Cambaliza, MOL, PB Shepson, J Bogner, DR Caulton, B Stirm, C Sweeney, SA Montzka, KR Gurney, K Spokas, OE Salmon, TN Lavoie, A Hendricks, K Mays, J Turnbull, BR Miller, T Lauvaux, K Davis, A Karion, B Moser, C Miller, C Obermeyer, J Whetstone, K Prasad, N Miles and S Richardson. (Jan 2015). Quantification and source apportionment of the methane emission flux from the city of Indianapolis. ELEMENTA-SCIENCE OF THE ANTHROPOCENE , 3. 10.12952/journal.elementa.000037
Elvidge, ECL, DE Oram, JC Laube, AK Baker, SA Montzka, S Humphrey, DA O'Sullivan and CAM Brenninkmeijer. (Jan 2015). Increasing concentrations of dichloromethane, CH2Cl2, inferred from CARIBIC air samples collected 1998-2012. ATMOSPHERIC CHEMISTRY AND PHYSICS , 15(4). 10.5194/acp-15-1939-2015
Lennartz, ST, G Krysztofiak, CA Marandino, BM Sinnhuber, S Tegtmeier, F Ziska, R Hossaini, K Kruger, SA Montzka, E Atlas, DE Oram, T Keber, H Bonisch and B Quack. (Jan 2015). Modelling marine emissions and atmospheric distributions of halocarbons and dimethyl sulfide: the influence of prescribed water concentration vs. prescribed emissions. ATMOSPHERIC CHEMISTRY AND PHYSICS , 15(20). 10.5194/acp-15-11753-2015
Hall, Bradley D., Harth, Christina M., Kim, Jin Seog, Lee, Jeongsoon, Montzka, Stephen A., Mhle, Jens, Reimann, Stefan, Vollmer, Martin K., Weiss, Ray F., Rhoderick, George C. (Jan 2015). Comparison of halocarbon measurements in an atmospheric dry whole air sample. Elementa: Science of the Anthropocene , 3. 10.12952/JOURNAL.ELEMENTA.000075
Lennartz, S. T., Krysztofiak-Tong, G., Marandino, C. A., Sinnhuber, B.-M., Tegtmeier, S., Ziska, F., Hossaini, R., Krger, K., Montzka, S. A., Atlas, E., Oram, D., Keber, T., Bnisch, H., Quack, B. (Jan 2015). Modelling marine emissions and atmospheric distributions of halocarbons and DMS: the influence of prescribed water concentration vs. prescribed emissions. Atmospheric Chemistry and Physics Discussions , 15(12). 10.5194/ACPD-15-17553-2015
Xiang, B, PK Patra, SA Montzka, SM Miller, JW Elkins, FL Moore, EL Atlas, BR Miller, RF Weiss, RG Prinn and SC Wofsy. (Dec 2014). Global emissions of refrigerants HCFC-22 and HFC-134a: Unforeseen seasonal contributions. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA , 111(49). 10.1073/pnas.1417372111
Patra, PK, MC Krol, SA Montzka, T Arnold, EL Atlas, BR Lintner, BB Stephens, B Xiang, JW Elkins, PJ Fraser, A Ghosh, EJ Hintsa, DF Hurst, K Ishijima, PB Krummel, BR Miller, K Miyazaki, FL Moore, J Muhle, S ODoherty, RG Prinn, LP Steele, M Takigawa, HJ Wang, RF Weiss, SC Wofsy and D Young. (Sep 2014). Observational evidence for interhemispheric hydroxyl-radical parity. NATURE , 513(7517). 10.1038/nature13721
Blunden, J, DS Arndt, AP Aaron-Morrison, SA Ackerman, A Albanil, EJ Alfaro, R Allan, LM Alves, JA Amador, P Ambenje, L Anderson, LM Andreassen, J Antonov, A Arendt, J Arevalo, DS Arndt, I Ashik, Z Atheru, J Augustine, A Baklanov, V Banzon, MO Baringer, S Barreira, D Barriopedro, S Baxter, J Bazo, A Becker, MJ Behrenfeld, GD Bell, A Benedetti, G Bernhard, P Berrisford, DI Berry, US Bhatt, M Bidegain, N Bindoff, P Bissolli, ES Blake, RC Blenman, J Blunden, M Bosilovich, JE Box, T Boyer, GO Braathen, DH Bromwich, G Brown, LC Brown, R Brown, L Bruhwiler, ON Bulygina, D Burgess, M Butler, B Calderon, SJ Camargo, GG Campbell, JD Campbell, J Cappelen, G Carrasco, DP Chambers, L Changa, PR Chappell, HH Christiansen, JR Christy, D Chung, P Ciais, KR Clem, CAS Coelho, M Coldewey-Egbers, S Colwell, OR Cooper, KA Coulibaly, C Cox, JN Cross, J Crouch, SA Cunningham, A Dahlba. (Jul 2014). STATE OF THE CLIMATE IN 2013. BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY , 95(7). 10.1175/2014BAMSStateoftheClimate.1
Petron, G, A Karion, C Sweeney, BR Miller, SA Montzka, GJ Frost, M Trainer, P Tans, A Andrews, J Kofler, D Helmig, D Guenther, E Dlugokencky, P Lang, T Newberger, S Wolter, B Hall, P Novelli, A Brewer, S Conley, M Hardesty, R Banta, A White, D Noone, D Wolfe and R Schnell. (Jun 2014). A new look at methane and nonmethane hydrocarbon emissions from oil and natural gas operations in the Colorado Denver-Julesburg Basin. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 119(11). 10.1002/2013JD021272
Umezawa, T, AK Baker, D Oram, C Sauvage, D O'Sullivan, A Rauthe-Schoch, SA Montzka, A Zahn and CAM Brenninkmeijer. (May 2014). Methyl chloride in the upper troposphere observed by the CARIBIC passenger aircraft observatory: Large-scale distributions and Asian summer monsoon outflow. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 119(9). 10.1002/2013JD021396
Caulton, DR, PB Shepson, RL Santoro, JP Sparks, RW Howarth, AR Ingraffea, MOL Cambaliza, C Sweeney, A Karion, KJ Davis, BH Stirm, SA Montzka and BR Miller. (Apr 2014). Toward a better understanding and quantification of methane emissions from shale gas development. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA , 111(17). 10.1073/pnas.1316546111
Rhoderick, GC, DL Duewer, E Apel, A Baldan, B Hall, A Harling, D Helmig, GS Heo, J Hueber, ME Kim, YD Kim, B Miller, S Montzka and D Riemer. (Mar 2014). International Comparison of a Hydrocarbon Gas Standard at the Picomol per Mol Level. ANALYTICAL CHEMISTRY , 86(5). 10.1021/ac403761u
Berkelhammer, M, D Asaf, C Still, S Montzka, D Noone, M Gupta, R Provencal, H Chen and D Yakir. (Feb 2014). Constraining surface carbon fluxes using in situ measurements of carbonyl sulfide and carbon dioxide. GLOBAL BIOGEOCHEMICAL CYCLES , 28(2). 10.1002/2013GB004644
Cressot, C, F Chevallier, P Bousquet, C Crevoisier, EJ Dlugokencky, A Fortems-Cheiney, C Frankenberg, R Parker, I Pison, RA Scheepmaker, SA Montzka, PB Krummel, LP Steele and RL Langenfelds. (Jan 2014). On the consistency between global and regional methane emissions inferred from SCIAMACHY, TANSO-FTS, IASI and surface measurements. ATMOSPHERIC CHEMISTRY AND PHYSICS , 14(2). 10.5194/acp-14-577-2014
Kuai, L, J Worden, SS Kulawik, SA Montzka and J Liu. (Jan 2014). Characterization of Aura TES carbonyl sulfide retrievals over ocean. ATMOSPHERIC MEASUREMENT TECHNIQUES , 7(1). 10.5194/amt-7-163-2014
Hall, BD, A Engel, J Muhle, JW Elkins, F Artuso, E Atlas, M Aydin, D Blake, EG Brunke, S Chiavarini, PJ Fraser, J Happell, PB Krummel, I Levin, M Loewenstein, M Maione, SA Montzka, S O'Doherty, S Reimann, G Rhoderick, ES Saltzman, HE Scheel, LP Steele, MK Vollmer, RF Weiss, D Worthy and Y Yokouchi. (Jan 2014). Results from the International Halocarbons in Air Comparison Experiment (IHALACE). ATMOSPHERIC MEASUREMENT TECHNIQUES , 7(2). 10.5194/amt-7-469-2014
Maione, M, F Graziosi, J Arduini, F Furlani, U Giostra, DR Blake, P Bonasoni, X Fang, SA Montzka, SJ O'Doherty, S Reimann, A Stohl and MK Vollmer. (Jan 2014). Estimates of European emissions of methyl chloroform using a Bayesian inversion method. ATMOSPHERIC CHEMISTRY AND PHYSICS , 14(18). 10.5194/acp-14-9755-2014
Oltmans, S. J., A. Karion, R. C. Schnell, G. Petron, C. Sweeney, S. Wolter, D. Neff, S. A. Montzka, B. R. Miller, D. Helmig, B. J. Johnson and J. Hueber. (Jan 2014). A high ozone episode in winter 2013 in the Uinta Basin oil and gas region characterized by aircraft measurements. , 14. 10.5194/acpd-14-20117-2014
Miller, SM, SC Wofsy, AM Michalak, EA Kort, AE Andrews, SC Biraud, EJ Dlugokencky, J Eluszkiewicz, ML Fischer, G Janssens-Maenhout, BR Miller, JB Miller, SA Montzka, T Nehrkorn and C Sweeney. (Dec 2013). Anthropogenic emissions of methane in the United States. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA , 110(50). 10.1073/pnas.1314392110
Waugh, DW, AM Crotwell, EJ Dlugokencky, GS Dutton, JW Elkins, BD Hall, EJ Hintsa, DF Hurst, SA Montzka, DJ Mondeel, FL Moore, JD Nance, EA Ray, SD Steenrod, SE Strahan and C Sweeney. (Oct 2013). Tropospheric SF6: Age of air from the Northern Hemisphere midlatitude surface. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 118(19). 10.1002/jgrd.50848
Karion, A, C Sweeney, G Petron, G Frost, RM Hardesty, J Kofler, BR Miller, T Newberger, S Wolter, R Banta, A Brewer, E Dlugokencky, P Lang, SA Montzka, R Schnell, P Tans, M Trainer, R Zamora and S Conley. (Aug 2013). Methane emissions estimate from airborne measurements over a western United States natural gas field. GEOPHYSICAL RESEARCH LETTERS , 40(16). 10.1002/grl.50811
Berry, J, A Wolf, JE Campbell, I Baker, N Blake, D Blake, AS Denning, SR Kawa, SA Montzka, U Seibt, K Stimler, D Yakir and ZX Zhu. (Jun 2013). A coupled model of the global cycles of carbonyl sulfide and CO2: A possible new window on the carbon cycle. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES , 118(2). 10.1002/jgrg.20068
Asaf, D, E Rotenberg, F Tatarinov, U Dicken, SA Montzka and D Yakir. (Mar 2013). Ecosystem photosynthesis inferred from measurements of carbonyl sulphide flux. NATURE GEOSCIENCE , 6(3). 10.1038/ngeo1730
Rigby, M, RG Prinn, S ODoherty, SA Montzka, A McCulloch, CM Harth, J Muhle, PK Salameh, RF Weiss, D Young, PG Simmonds, BD Hall, GS Dutton, D Nance, DJ Mondeel, JW Elkins, PB Krummel, LP Steele and PJ Fraser. (Jan 2013). Re-evaluation of the lifetimes of the major CFCs and CH3CCl3 using atmospheric trends. ATMOSPHERIC CHEMISTRY AND PHYSICS , 13(5). 10.5194/acp-13-2691-2013
Lehman, SJ, JB Miller, C Wolak, J Southon, PP Tans, SA Montzka, C Sweeney, A Andrews, B LaFranchi, TP Guilderson and JC Turnbull. (Jan 2013). ALLOCATION OF TERRESTRIAL CARBON SOURCES USING (CO2)-C-14: METHODS, MEASUREMENT, AND MODELING. RADIOCARBON , 55(3-Feb). 10.1017/S0033822200048414
LaFranchi, BW, G Petron, JB Miller, SJ Lehman, AE Andrews, EJ Dlugokencky, B Hall, BR Miller, SA Montzka, W Neff, PC Novelli, C Sweeney, JC Turnbull, DE Wolfe, PP Tans, KR Gurney and TP Guilderson. (Jan 2013). Constraints on emissions of carbon monoxide, methane, and a suite of hydrocarbons in the Colorado Front Range using observations of (CO2)-C-14. ATMOSPHERIC CHEMISTRY AND PHYSICS , 13(21). 10.5194/acp-13-11101-2013
Hossaini, R, H Mantle, MP Chipperfield, SA Montzka, P Hamer, E Ziska, B Quack, K Kruger, S Tegtmeier, E Atlas, S Sala, A Engel, H Bonisch, T Keber, D Oram, G Mills, C Ordonez, A Saiz-Lopez, N Warwick, Q Liang, W Feng, F Moore, BR Miller, V Marecal, NAD Richards, M Dorf and K Pfeilsticker. (Jan 2013). Evaluating global emission inventories of biogenic bromocarbons. ATMOSPHERIC CHEMISTRY AND PHYSICS , 13(23). 10.5194/acp-13-11819-2013
Achberger, C, SA Ackerman, FH Ahmed, A Albanil-Encarnacion, EJ Alfaro, LM Alves, R Allan, JA Amador, P Ambenje, MD Antoine, J Antonov, J Arevalo, DS Arndt, I Ashik, Z Atheru, A Baccini, J Baez, V Banzon, MO Baringer, S Barreira, DE Barriopedro, JJ Bates, A Becker, MJ Behrenfeld, GD Bell, A Benedetti, G Bernhard, P Berrisford, DI Berry, A Beszczynska-Moeller, US Bhatt, M Bidegain, P Bieniek, C Birkett, P Bissolli, ES Blake, J Blunden, D Boudet-Rouco, JE Box, T Boyer, GO Braathen, GR Brackenridge, P Brohan, DH Bromwich, L Brown, R Brown, L Bruhwiler, ON Bulygina, J Burrows, B Calderon, SJ Camargo, J Cappellen, E Carmack, G Carrasco, DP Chambers, HH Christiansen, J Christy, D Chung, P Ciais, CAS Coehlo, S Colwell, J Comiso, JF Cretaux, J Crouch, SA Cunningham, RAM De Jeu, M Demircan, C Derksen, HJ Diamond, EJ Dlugokencky, K Dohan, AJ Dolman, WA Dorigo, DS Drozdov, C . (Jul 2012). STATE OF THE CLIMATE IN 2011 Special Supplement to the Bulletin of the American Meteorological Society Vol. 93, No. 7, July 2012. BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY , 93(7). 10.1175/2012BAMSStateoftheClimate.1
Miller, JB, SJ Lehman, SA Montzka, C Sweeney, BR Miller, A Karion, C Wolak, EJ Dlugokencky, J Southon, JC Turnbull and PP Tans. (Apr 2012). Linking emissions of fossil fuel CO2 and other anthropogenic trace gases using atmospheric (CO2)-C-14. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 117. 10.1029/2011JD017048
Petron, G, G Frost, BR Miller, AI Hirsch, SA Montzka, A Karion, M Trainer, C Sweeney, AE Andrews, L Miller, J Kofler, A Bar-Ilan, EJ Dlugokencky, L Patrick, CT Moore, TB Ryerson, C Siso, W Kolodzey, PM Lang, T Conway, P Novelli, K Masarie, B Hall, D Guenther, D Kitzis, J Miller, D Welsh, D Wolfe, W Neff and P Tans. (Feb 2012). Hydrocarbon emissions characterization in the Colorado Front Range: A pilot study. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 117. 10.1029/2011JD016360
Hossaini, R, MP Chipperfield, W Feng, TJ Breider, E Atlas, SA Montzka, BR Miller, F Moore and J Elkins. (Jan 2012). The contribution of natural and anthropogenic very short-lived species to stratospheric bromine. ATMOSPHERIC CHEMISTRY AND PHYSICS , 12(1). 10.5194/acp-12-371-2012
Saikawa, E, M Rigby, RG Prinn, SA Montzka, BR Miller, LJM Kuijpers, PJB Fraser, MK Vollmer, T Saito, Y Yokouchi, CM Harth, J Muhle, RF Weiss, PK Salameh, J Kim, S Li, S Park, KR Kim, D Young, S O'Doherty, PG Simmonds, A McCulloch, PB Krummel, LP Steele, C Lunder, O Hermansen, M Maione, J Arduini, B Yao, LX Zhou, HJ Wang, JW Elkins and B Hall. (Jan 2012). Global and regional emission estimates for HCFC-22. ATMOSPHERIC CHEMISTRY AND PHYSICS , 12(21). 10.5194/acp-12-10033-2012
Witrant, E, P Martinerie, C Hogan, JC Laube, K Kawamura, E Capron, SA Montzka, EJ Dlugokencky, D Etheridge, T Blunier and WT Sturges. (Jan 2012). A new multi-gas constrained model of trace gas non-homogeneous transport in firn: evaluation and behaviour at eleven polar sites. ATMOSPHERIC CHEMISTRY AND PHYSICS , 12(23). 10.5194/acp-12-11465-2012
Blonquist, JM, SA Montzka, JW Munger, D Yakir, AR Desai, D Dragoni, TJ Griffis, RK Monson, RL Scott and DR Bowling. (Nov 2011). The potential of carbonyl sulfide as a proxy for gross primary production at flux tower sites. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES , 116. 10.1029/2011JG001723
Meinshausen, M, SJ Smith, K Calvin, JS Daniel, MLT Kainuma, JF Lamarque, K Matsumoto, SA Montzka, SCB Raper, K Riahi, A Thomson, GJM Velders and DPP van Vuuren. (Nov 2011). The RCP greenhouse gas concentrations and their extensions from 1765 to 2300. CLIMATIC CHANGE , 109(2-Jan). 10.1007/s10584-011-0156-z
Stimler, K, JA Berry, SA Montzka and D Yakir. (Sep 2011). Association between Carbonyl Sulfide Uptake and (18)Delta during Gas Exchange in C-3 and C-4 Leaves. PLANT PHYSIOLOGY , 157(1). 10.1104/pp.111.176578
Aydin, M, KR Verhulst, ES Saltzman, MO Battle, SA Montzka, DR Blake, Q Tang and MJ Prather. (Aug 2011). Recent decreases in fossil-fuel emissions of ethane and methane derived from firn air. NATURE , 476(7359). 10.1038/nature10352
Montzka, SA, M Krol, E Dlugokencky, B Hall, P Jockel and J Lelieveld. (Jan 2011). Small Interannual Variability of Global Atmospheric Hydroxyl. SCIENCE , 331(6013). 10.1126/science.1197640
Wofsy, S., B.C. Daube, R. Jimenez, E. Kort, J.V. Pittman, S. Park, R. Commane, Bin Xiang, G. Santoni, D. Jacob, J. Fisher, C. Pickett-Heaps, H. Wang, K. Wecht, Q.-Q. Wang, B.B. Stephens, S. Shertz, P. Romashkin, T. Campos, J. Haggerty, W.A. Cooper, D. Rogers, S. Beaton, R. Hendershot, J.W. Elkins, D.W. Fahey, R.S. Gao, F. Moore, S.A. Montzka, J.P. Schwarz, D. Hurst, B. Miller, C. Sweeney, S. Oltmans, D. Nance, E. Hintsa, G. Dutton, L.A. Watts, J.R. Spackman, K.H. Rosenlof, E.A. Ray, M.A. Zondlo, Minghui Diao, R. Keeling, J. Bent, E.L. Atlas, R. Lueb, M.J. Mahoney, M. Chahine, E. Olson, P. Patra, K. Ishijima, R. Engelen, J. Flemming, R. Nassar, D.B.A. Jones, S.E. Mikaloff Fletcher. (Jan 2011). HIAPER Pole-to-Pole Observations (HIPPO): Fine-grained, global scale measurements of climatically important atmospheric gases and aerosols. , 369(1943). 10.1098/rsta.2010.0313
Turnbull, JC, A Karion, ML Fischer, I Faloona, T Guilderson, SJ Lehman, BR Miller, JB Miller, S Montzka, T Sherwood, S Saripalli, C Sweeney and PP Tans. (Jan 2011). Assessment of fossil fuel carbon dioxide and other anthropogenic trace gas emissions from airborne measurements over Sacramento, California in spring 2009. ATMOSPHERIC CHEMISTRY AND PHYSICS , 11(2). 10.5194/acp-11-705-2011
Battle, MO, JP Severinghaus, ED Sofen, D Plotkin, AJ Orsi, M Aydin, SA Montzka, T Sowers and PP Tans. (Jan 2011). Controls on the movement and composition of firn air at the West Antarctic Ice Sheet Divide. ATMOSPHERIC CHEMISTRY AND PHYSICS , 11(21). 10.5194/acp-11-11007-2011
Oltmans, SJ, AS Lefohn, JM Harris, DW Tarasick, AM Thompson, H Wernli, BJ Johnson, PC Novelli, SA Montzka, JD Ray, LC Patrick, C Sweeney, A Jefferson, T Dann, J Davies, M Shapiro and BN Holben. (Nov 2010). Enhanced ozone over western North America from biomass burning in Eurasia during April 2008 as seen in surface and profile observations. ATMOSPHERIC ENVIRONMENT , 44(35). 10.1016/j.atmosenv.2010.07.004
Brioude, J, RW Portmann, JS Daniel, OR Cooper, GJ Frost, KH Rosenlof, C Granier, AR Ravishankara, SA Montzka and A Stohl. (Oct 2010). Variations in ozone depletion potentials of very short-lived substances with season and emission region. GEOPHYSICAL RESEARCH LETTERS , 37. 10.1029/2010GL044856
Severinghaus, JP, MR Albert, ZR Courville, MA Fahnestock, K Kawamura, SA Montzka, J Muhle, TA Scambos, E Shields, CA Shuman, M Suwa, P Tans and RF Weiss. (May 2010). Deep air convection in the firn at a zero-accumulation site, central Antarctica. EARTH AND PLANETARY SCIENCE LETTERS , 293(4-Mar). 10.1016/j.epsl.2010.03.003
Montzka, SA, L Kuijpers, MO Battle, M Aydin, KR Verhulst, ES Saltzman and DW Fahey. (Jan 2010). Recent increases in global HFC-23 emissions. GEOPHYSICAL RESEARCH LETTERS , 37. 10.1029/2009GL041195
Warneke, C, KD Froyd, J Brioude, R Bahreini, CA Brock, J Cozic, JA de Gouw, DW Fahey, R Ferrare, JS Holloway, AM Middlebrook, L Miller, S Montzka, JP Schwarz, H Sodemann, JR Spackman and A Stohl. (Jan 2010). An important contribution to springtime Arctic aerosol from biomass burning in Russia. GEOPHYSICAL RESEARCH LETTERS , 37. 10.1029/2009GL041816
Stimler, K, SA Montzka, JA Berry, Y Rudich and D Yakir. (Jan 2010). Relationships between carbonyl sulfide (COS) and CO2 during leaf gas exchange. NEW PHYTOLOGIST , 186(4). 10.1111/j.1469-8137.2010.03218.x
Aydin, M, SA Montzka, MO Battle, MB Williams, WJ De Bruyn, JH Butler, KR Verhulst, C Tatum, BK Gun, DA Plotkin, BD Hall and ES Saltzman. (Jan 2010). Post-coring entrapment of modern air in some shallow ice cores collected near the firn-ice transition: evidence from CFC-12 measurements in Antarctic firn air and ice cores. ATMOSPHERIC CHEMISTRY AND PHYSICS , 10(11). 10.5194/acp-10-5135-2010
Xiao, X, RG Prinn, PJ Fraser, PG Simmonds, RF Weiss, S O'Doherty, BR Miller, PK Salameh, CM Harth, PB Krummel, LW Porter, J Muhle, BR Greally, D Cunnold, R Wang, SA Montzka, JW Elkins, GS Dutton, TM Thompson, JH Butler, BD Hall, S Reimann, MK Vollmer, F Stordal, C Lunder, M Maione, J Arduini and Y Yokouchi. (Jan 2010). Optimal estimation of the surface fluxes of methyl chloride using a 3-D global chemical transport model. ATMOSPHERIC CHEMISTRY AND PHYSICS , 10(12). 10.5194/acp-10-5515-2010
Gilman, JB, JF Burkhart, BM Lerner, EJ Williams, WC Kuster, PD Goldan, PC Murphy, C Warneke, C Fowler, SA Montzka, BR Miller, L Miller, SJ Oltmans, TB Ryerson, OR Cooper, A Stohl and JA de Gouw. (Jan 2010). Ozone variability and halogen oxidation within the Arctic and sub-Arctic springtime boundary layer. ATMOSPHERIC CHEMISTRY AND PHYSICS , 10(21). 10.5194/acp-10-10223-2010
Dlugokencky, EJ, L Bruhwiler, JWC White, LK Emmons, PC Novelli, SA Montzka, KA Masarie, PM Lang, AM Crotwell, JB Miller and LV Gatti. (Sep 2009). Observational constraints on recent increases in the atmospheric CH4 burden. GEOPHYSICAL RESEARCH LETTERS , 36. 10.1029/2009GL039780
Peterson, TC, MO Baringer, PW Thorne, MJ Menne, JJ Kennedy, J Christy, D Seidel, C Mears, L Haimberger, JH Wang, L Zhang, DH Levinson, KA Hilburn, MC Kruk, DA Robinson, MJ Foster, SA Ackerman, R Bennartz, AK Heidinger, BC Maddux, WB Rossow, AM Macdonald, BM Fekete, LC Bowling, RB Lammers, R Lawford, R Allan, TM Wong, PW Stackhouse, DP Kratz, AC Wilber, RC Schnell, EJ Dlugokencky, SA Montzka, JW Elkins, GS Dutton, J Haywood, N Bellouin, A Jones, M Weber, MS Pelto, AS Belward, E Bartholome, F Achard, AB Brink, N Gobron, AS Belward, JM Levy, Y Xue, RW Reynolds, GC Johnson, JM Lyman, JK Willis, S Levitus, T Boyer, J Antonov, C Schmid, GJ Goni, L Yu, RA Weller, GJ Goni, JA Knaff, GC Johnson, JM Lyman, R Lumpkin, G Goni, K Dohan, MO Baringer, CS Meinen, GC Johnson, TO Kanzow, SA Cunningham, WE Johns, LM Beal, JJM Hirschi, D Rayner, HR Longworth, HL Bryden, J Mar. (Aug 2009). State of the Climate in 2008. BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY , 90(8). 10.1175/BAMS-90-8-StateoftheClimate
de Gouw, JA, C Warneke, SA Montzka, JS Holloway, DD Parrish, FC Fehsenfeld, EL Atlas, RJ Weber and M Flocke. (Mar 2009). Carbonyl sulfide as an inverse tracer for biogenic organic carbon in gas and aerosol phases. GEOPHYSICAL RESEARCH LETTERS , 36. 10.1029/2008GL036910
Montzka, SA, BD Hall and JW Elkins. (Feb 2009). Accelerated increases observed for hydrochlorofluorocarbons since 2004 in the global atmosphere. GEOPHYSICAL RESEARCH LETTERS , 36. 10.1029/2008GL036475
Warneke, C, R Bahreini, J Brioude, CA Brock, JA de Gouw, DW Fahey, KD Froyd, JS Holloway, A Middlebrook, L Miller, S Montzka, DM Murphy, J Peischl, TB Ryerson, JP Schwarz, JR Spackman and P Veres. (Jan 2009). Biomass burning in Siberia and Kazakhstan as an important source for haze over the Alaskan Arctic in April 2008. GEOPHYSICAL RESEARCH LETTERS , 36. 10.1029/2008GL036194
Yvon-Lewis, SA, ES Saltzman and SA Montzka. (Jan 2009). Recent trends in atmospheric methyl bromide: analysis of post-Montreal Protocol variability. ATMOSPHERIC CHEMISTRY AND PHYSICS , 9(16).
Turnbull, JC, JB Miller, SJ Lehman, D Hurst, W Peters, PP Tans, J Southon, SA Montzka, JW Elkins, DJ Mondeel, PA Romashkin, N Elansky and A Skorokhod. (Jan 2009). Spatial distribution of Delta(CO2)-C-14 across Eurasia: measurements from the TROICA-8 expedition. ATMOSPHERIC CHEMISTRY AND PHYSICS , 9(1). 10.5194/acp-9-175-2009
Campbell, JE, GR Carmichael, T Chai, M Mena-Carrasco, Y Tang, DR Blake, NJ Blake, SA Vay, GJ Collatz, I Baker, JA Berry, SA Montzka, C Sweeney, JL Schnoor and CO Stanier. (Nov 2008). Photosynthetic Control of Atmospheric Carbonyl Sulfide During the Growing Season. SCIENCE , 322(5904). 10.1126/science.1164015
Suntharalingam, P, AJ Kettle, SM Montzka and DJ Jacob. (Oct 2008). Global 3-D model analysis of the seasonal cycle of atmospheric carbonyl sulfide: Implications for terrestrial vegetation uptake. GEOPHYSICAL RESEARCH LETTERS , 35(19). 10.1029/2008GL034332
Montzka, SA, P Calvert, BD Hall, JW Elkins, TJ Conway, PP Tans and C Sweeney. (May 2007). On the global distribution, seasonality, and budget of atmospheric carbonyl sulfide (COS) and some similarities to CO2. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 112(D9). 10.1029/2006JD007665
Butler, JH, DB King, JM Lobert, SA Montzka, SA Yvon-Lewis, BD Hall, NJ Warwick, DJ Mondeel, M Aydin and JW Elkins. (Mar 2007). Oceanic distributions and emissions of short-lived halocarbons. GLOBAL BIOGEOCHEMICAL CYCLES , 21(1). 10.1029/2006GB002732
Daniel, JS, GJM Velders, S Solomon, M McFarland and SA Montzka. (Jan 2007). Present and future sources and emissions of halocarbons: Toward new constraints. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 112(D2). 10.1029/2006JD007275
Dorf, M, JH Butler, A Butz, C Camy-Peyret, MP Chipperfield, L Kritten, SA Montzka, B Simmes, F Weidner and K Pfeilsticker. (Dec 2006). Long-term observations of stratospheric bromine reveal slow down in growth. GEOPHYSICAL RESEARCH LETTERS , 33(24). 10.1029/2006GL027714
Froidevaux, L, NJ Livesey, WG Read, RJ Salawitch, JW Waters, B Drouin, IA MacKenzie, HC Pumphrey, P Bernath, C Boone, R Nassar, S Montzka, J Elkins, D Cunnold and D Waugh. (Dec 2006). Temporal decrease in upper atmospheric chlorine. GEOPHYSICAL RESEARCH LETTERS , 33(23). 10.1029/2006GL027600
Lelieveld, J, CAM Brenninkmeijer, P Joeckel, ISA Isaksen, MC Krol, JE Mak, E Dlugokencky, SA Montzka, PC Novelli, W Peters and PP Tans. (Sep 2006). New Directions: Watching over tropospheric hydroxyl (OH). ATMOSPHERIC ENVIRONMENT , 40(29). 10.1016/j.atmosenv.2006.04.008
Newman, PA, ER Nash, SR Kawa, SA Montzka and SM Schauffler. (Jun 2006). When will the Antarctic ozone hole recover?. GEOPHYSICAL RESEARCH LETTERS , 33(12). 10.1029/2005GL025232
McCarthy, MC, HR Hafner and SA Montzka. (Jan 2006). Background concentrations of 18 air toxics for North America. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION , 56(1).
Montzka, SA, M Aydin, M Battle, JH Butler, ES Saltzman, BD Hall, AD Clarke, D Mondeel and JW Elkins. (Nov 2004). A 350-year atmospheric history for carbonyl sulfide inferred from Antarctic firn air and air trapped in ice. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 109(D22). 10.1029/2004JD004686
Montzka, SA, JH Butler, BD Hall, DJ Mondeel and JW Elkins. (Aug 2003). A decline in tropospheric organic bromine. GEOPHYSICAL RESEARCH LETTERS , 30(15). 10.1029/2003GL017745
King, DB, JH Butler, SA Montzka, SA Yvon-Lewis and JW Elkins. (Aug 2000). Implications of methyl bromide supersaturations in the temperate North Atlantic Ocean. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 105(D15). 10.1029/2000JD900251
Montzka, SA, CM Spivakovsky, JH Butler, JW Elkins, LT Lock and DJ Mondeel. (Apr 2000). New observational constraints for atmospheric hydroxyl on global and hemispheric scales. SCIENCE , 288(5465). 10.1126/science.288.5465.500
Butler, JH, M Battle, ML Bender, SA Montzka, AD Clarke, ES Saltzman, CM Sucher, JP Severinghaus and JW Elkins. (Jun 1999). A record of atmospheric halocarbons during the twentieth century from polar firn air. NATURE , 399(6738). 10.1038/21586
Montzka, SA, JH Butler, JW Elkins, TM Thompson, AD Clarke and LT Lock. (Apr 1999). Present and future trends in the atmospheric burden of ozone-depleting halogens. NATURE , 398(6729). 10.1038/19499
Frost, GJ, M Trainer, G Allwine, MP Buhr, JG Calvert, CA Cantrell, FC Fehsenfeld, PD Goldan, J Herwehe, G Hubler, WC Kuster, R Martin, RT McMillen, SA Montzka, RB Norton, DD Parrish, BA Ridley, RE Shetter, JG Walega, BA Watkins, HH Westberg and EJ Williams. (Sep 1998). Photochemical ozone production in the rural southeastern United States during the 1990 Rural Oxidants in the Southern Environment (ROSE) program. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 103(D17). 10.1029/98JD00881
Butler, JH, SA Montzka, AD Clarke, JM Lobert and JW Elkins. (Jan 1998). Growth and distribution of halons in the atmosphere. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 103(D1). 10.1029/97JD02853
Wamsley, PR, JW Elkins, DW Fahey, GS Dutton, CM Volk, RC Myers, SA Montzka, JH Butler, AD Clarke, PJ Fraser, LP Steele, MP Lucarelli, EL Atlas, SM Schauffler, DR Blake, FS Rowland, WT Sturges, JM Lee, SA Penkett, A Engel, RM Stimpfle, KR Chan, DK Weisenstein, MKW Ko and RJ Salawitch. (Jan 1998). Distribution of halon-1211 in the upper troposphere and lower stratosphere and the 1994 total bromine budget. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 103(D1). 10.1029/97JD02466
Lobert, JM, SA YvonLewis, JH Butler, SA Montzka and RC Myers. (Jan 1997). Undersaturation of CH3Br in the Southern Ocean. GEOPHYSICAL RESEARCH LETTERS , 24(2). 10.1029/96GL03928
Montzka, SA, JH Butler, RC Myers, TM Thompson, TH Swanson, AD Clarke, LT Lock and JW Elkins. (May 1996). Decline in the tropospheric abundance of halogen from halocarbons: Implications for stratospheric ozone depletion. SCIENCE , 272(5266). 10.1126/science.272.5266.1318
Elkins, JW, DW Fahey, JM Gilligan, GS Dutton, TJ Baring, CM Volk, RE Dunn, RC Myers, SA Montzka, PR Wamsley, AH Hayden, JH Butler, TM Thompson, TH Swanson, EJ Dlugokencky, PC Novelli, DF Hurst, JM Lobert, SJ Ciciora, RJ McLaughlin, TL Thompson, RH Winkler, PJ Fraser, LP Steele and MP Lucarelli. (Feb 1996). Airborne gas chromatograph for in situ measurements of long-lived species in the upper troposphere and lower stratosphere. GEOPHYSICAL RESEARCH LETTERS , 23(4). 10.1029/96GL00244
Montzka, SA, RC Myers, JH Butler, JW Elkins, LT Lock, AD Clarke and AH Goldstein. (Jan 1996). Observations of HFC-134a in the remote troposphere. GEOPHYSICAL RESEARCH LETTERS , 23(2). 10.1029/95GL03590
Goldan, PD, WC Kuster, FC Fehsenfeld and SA Montzka. (Dec 1995). Hydrocarbon measurements in the southeastern United States: The Rural Oxidants in the Southern Environment (ROSE) program 1990. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 100(D12). 10.1029/95JD02607
BERTMAN, SB, JM ROBERTS, DD PARRISH, MP BUHR, PD GOLDAN, WC KUSTER, FC FEHSENFELD, SA MONTZKA and H WESTBERG. (Nov 1995). EVOLUTION OF ALKYL NITRATES WITH AIR-MASS AGE. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 100(D11). 10.1029/95JD02030
BUHR, M, D PARRISH, J ELLIOT, J HOLLOWAY, J CARPENTER, P GOLDAN, W KUSTER, M TRAINER, S MONTZKA, S MCKEEN and F FEHSENFELD. (Nov 1995). EVALUATION OF OZONE PRECURSOR SOURCE TYPES USING PRINCIPAL COMPONENT ANALYSIS OF AMBIENT AIR MEASUREMENTS IN RURAL ALABAMA. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 100(D11). 10.1029/95JD01837
MONTZKA, SA, M TRAINER, WM ANGEVINE and FC FEHSENFELD. (Jun 1995). MEASUREMENTS OF 3-METHYL FURAN, METHYL VINYL KETONE, AND METHACROLEIN AT A RURAL FORESTED SITE IN THE SOUTHEASTERN UNITED-STATES. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 100(D6). 10.1029/95JD01132
WOODBRIDGE, EL, JW ELKINS, DW FAHEY, LE HEIDT, S SOLOMON, TJ BARING, TM GILPIN, WH POLLOCK, SM SCHAUFFLER, EL ATLAS, M LOEWENSTEIN, JR PODOLSKE, CR WEBSTER, RD MAY, JM GILLIGAN, SA MONTZKA, KA BOERING and RJ SALAWITCH. (Feb 1995). ESTIMATES OF TOTAL ORGANIC AND INORGANIC CHLORINE IN THE LOWER STRATOSPHERE FROM IN-SITU AND FLASK MEASUREMENTS DURING AASE-II. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 100(D2). 10.1029/94JD02744
LOBERT, JM, JH BUTLER, SA MONTZKA, LS GELLER, RC MYERS and JW ELKINS. (Feb 1995). A NET SINK FOR ATMOSPHERIC CH3BR IN THE EAST PACIFIC-OCEAN. SCIENCE , 267(5200). 10.1126/science.267.5200.1002
GOLDAN, PD, WC KUSTER, FC FEHSENFELD and SA MONTZKA. (Jun 1993). THE OBSERVATION OF A C5 ALCOHOL EMISSION IN A NORTH-AMERICAN PINE FOREST. GEOPHYSICAL RESEARCH LETTERS , 20(11). 10.1029/93GL00247
MONTZKA, SA, RC MYERS, JH BUTLER, JW ELKINS and SO CUMMINGS. (Apr 1993). GLOBAL TROPOSPHERIC DISTRIBUTION AND CALIBRATION SCALE OF HCFC-22. GEOPHYSICAL RESEARCH LETTERS , 20(8). 10.1029/93GL00753
MONTZKA, SA, M TRAINER, PD GOLDAN, WC KUSTER and FC FEHSENFELD. (Jan 1993). ISOPRENE AND ITS OXIDATION-PRODUCTS, METHYL VINYL KETONE AND METHACROLEIN, IN THE RURAL TROPOSPHERE. , 98(D1). 10.1029/92JD02382
BUTLER, JH, JW ELKINS, BD HALL, SO CUMMINGS and SA MONTZKA. (Oct 1992). A DECREASE IN THE GROWTH-RATES OF ATMOSPHERIC HALON CONCENTRATIONS. NATURE , 359(6394). 10.1038/359403a0
TALUKDAR, RK, A MELLOUKI, AM SCHMOLTNER, T WATSON, S MONTZKA and AR RAVISHANKARA. (Jul 1992). KINETICS OF THE OH REACTION WITH METHYL CHLOROFORM AND ITS ATMOSPHERIC IMPLICATIONS. SCIENCE , 257(5067). 10.1126/science.257.5067.227
MONTZKA, SA, BM HYBERTSON, RM BARKLEY and RE SIEVERS. (May 1991). LOW-TEMPERATURE OXIDATION OF YBA2CU3O6.0 WITH NITROGEN-DIOXIDE. JOURNAL OF MATERIALS RESEARCH , 6(5). 10.1557/JMR.1991.0891
MONTZKA, SA, RM BARKLEY and RE SIEVERS. (Jun 1989). CATALYZED REDOX REACTIONS OCCURRING IN A CHEMI-LUMINESCENCE DETECTOR USED FOR ENVIRONMENTAL-ANALYSIS. SOUTH AFRICAN JOURNAL OF CHEMISTRY , 42(2).
MCNAMARA, EA, SA MONTZKA, RM BARKLEY and RE SIEVERS. (Oct 1988). SUPERCONDUCTOR METAL-OXIDE CATALYST IN A CHEMI-LUMINESCENCE CHROMATOGRAPHY DETECTOR. JOURNAL OF CHROMATOGRAPHY , 452. 10.1016/S0021-9673(01)81438-2
POURREZA, N, SA MONTZKA, RM BARKLEY, RE SIEVERS and RS HUTTE. (Jul 1987). CHEMISTRY OCCURRING IN REDOX CHEMILUMINESCENCE DETECTORS FOR CHROMATOGRAPHY. JOURNAL OF CHROMATOGRAPHY , 399.