Stephen A. Montzka
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.