Cooperative Institute for Research in Environmental Sciences

Rainer Volkamer

Rainer Volkamer

Research Interests

As Associate Professor at the University of Colorado (Chemistry Department) in Boulder, Colorado my teaching in Instrumental Analysis with Environmental Emphasis (undergraduate level), and Analytical Spectroscopy (graduate level) is often enhanced by my research in Atmospheric Chemistry to inform Chemistry-Climate interactions, Energy & the Environment. My research group develops instrumentation (in-situ optical spectroscopy & sub-orbital remote sensing) to solve Analytical & Physical Chemistry problems in the real-world, e.g., to better quantify sources (air-sea exchange, urban, agriculture, biomass burning, etc), characterize aerosols (optical closure), and to probe mechanisms by which gases modify aerosols, oxidative capacity, atmospheric mercury, tropospheric O3, and CH4.

Current Research

  • Tropospheric Halogens in the Remote Free Troposphere and UTLS
  • Chemical Coupling of Halogens and Oxygenated Volatile Organic Compounds
  • Solar Occultation Flux Spectroscopy aboard the Wyoming King Air
  • The CLOUD experiment: Anthropogenic and Marine Nucleation
  • Molecular Spectroscopy: weak bands of H2O and O2-O2 collision complexes

 



The Cosmics Leaving Outdoor Droplets (CLOUD) experiment at CERN, Geneva uses an ultraclean chamber facility to study how gases form new particles (nucleation), and grow to affect cloud formation.

Honors and Awards

  • NSF CAREER Award recipient, 2009
  • Feodor-Lynen Fellow (2005-2007)
  • Henry & Camille Dreyfus Fellow (2002-2004)
  • Marie Curie Fellow (1998-2000)
  • Erasmus Fellow (1992-1993)

View Publications

  • de Gouw, JA; Gilman, JB; Kim, SW; Alvarez, SL; Dusanter, S; Graus, M; Griffith, SM; Isaacman-VanWertz, G; Kuster, WC; Lefer, BL; Lerner, BM; McDonald, BC; Rappengluck, B; Roberts, JM; Stevens, PS; Stutz, J; Thalman, R; Veres, PR; Volkamer, R; Warneke, C; Washenfelder, RA; Young, CJ (2018), Chemistry of Volatile Organic Compounds in the Los Angeles Basin: Formation of Oxygenated Compounds and Determination of Emission Ratios. J. Geophys. Res.-Atmos. Version: 1 123 (4) 2298-2319, issn: 2169-897X, ids: FZ7IR, doi: 10.1002/2017JD027976
  • Toivola, M; Prisle, NL; Elm, J; Waxman, EM; Volkamer, R; Kurten, T (2017), Can COSMOTherm Predict a Salting in Effect?. J. Phys. Chem. A Version: 1 121 (33) 6288-6295, issn: 1089-5639, ids: FF0NJ, doi: 10.1021/acs.jpca.7b04847, PubMed ID: 28758400
  • Anderson, DC; Nicely, JM; Wolfe, GM; Hanisco, TF; Salawitch, RJ; Canty, TP; Dickerson, RR; Apel, EC; Baidar, S; Bannan, TJ; Blake, NJ; Chen, DX; Dix, B; Fernandez, RP; Hall, SR; Hornbrook, RS; Huey, LG; Josse, B; Jockel, P; Kinnison, DE; Koenig, TK; Le Breton, M; Marecal, V; Morgenstern, O; Oman, LD; Pan, LL; Percival, C; Plummer, D; Revell, LE; Rozanov, E; Saiz-Lopez, A; Stenke, A; Sudo, K; Tilmes, S; Ullmann, K; Volkamer, R; Weinheimer, AJ; Zeng, G (2017), Formaldehyde in the Tropical Western Pacific: Chemical Sources and Sinks, Convective Transport, and Representation in CAM-Chem and the CCMI Models. J. Geophys. Res.-Atmos. Version: 1 122 (20) 11201-11226, issn: 2169-897X, ids: FO9GE, doi: 10.1002/2016JD026121, PubMed ID: 29527424
  • Chiu, R; Tinel, L; Gonzalez, L; Ciuraru, R; Bernard, F; George, C; Volkamer, R (2017), UV photochemistry of carboxylic acids at the air-sea boundary: A relevant source of glyoxal and other oxygenated VOC in the marine atmosphere. Geophys. Res. Lett. Version: 1 44 (2) 1079-1087, issn: 0094-8276, ids: EM9SY, doi: 10.1002/2016GL071240
  • Koenig, TK; Volkamer, R; Baidar, S; Dix, B; Wang, SY; Anderson, DC; Salawitch, RJ; Wales, PA; Cuevas, CA; Fernandez, RP; Saiz-Lopez, A; Evans, MJ; Sherwen, T; Jacob, DJ; Schmidt, J; Kinnison, D; Lamarque, JF; Apel, EC; Bresch, JC; Campos, T; Flocke, FM; Hall, SR; Honomichl, SB; Hornbrook, R; Jensen, JB; Lueb, R; Montzka, DD; Pan, LL; Reeves, JM; Schauffler, SM; Ullmann, K; Weinheimer, AJ; Atlas, EL; Donets, V; Navarro, MA; Riemer, D; Blake, NJ; Chen, DX; Huey, LG; Tanner, DJ; Hanisco, TF; Wolfe, GM (2017), BrO and inferred Br-y profiles over the western Pacific: relevance of inorganic bromine sources and a Br-y minimum in the aged tropical tropopause layer. Atmos. Chem. Phys. Version: 1 17 (24) 15245-15270, issn: 1680-7316, ids: FQ9LJ, doi: 10.5194/acp-17-15245-2017
  • Wang, Y; Beirle, S; Hendrick, F; Hilboll, A; Jin, JL; Kyuberis, AA; Lampel, J; Li, A; Luo, YH; Lodi, L; Ma, JZ; Navarro, M; Ortega, I; Peters, E; Polyansky, OL; Remmers, J; Richter, A; Puentedura, O; Van Roozendael, M; Seyler, A; Tennyson, J; Volkamer, R; Xie, PH; Zobov, NF; Wagner, T (2017), MAX-DOAS measurements of HONO slant column densities during the MAD-CAT campaign: inter-comparison, sensitivity studies on spectral analysis settings, and error budget. Atmos. Meas. Tech. Version: 1 10 (10) 3719-3742, issn: 1867-1381, ids: FJ5ZI, doi: 10.5194/amt-10-3719-2017
  • Pan, LL; Atlas, EL; Salawitch, RJ; Honomichl, SB; Bresch, JF; Randel, WJ; Apel, EC; Hornbrook, RS; Weinheimer, AJ; Anderson, DC; Andrews, SJ; Baidar, S; Beaton, SP; Campos, TL; Carpenter, LJ; Chen, D; Dix, B; Donets, V; Hall, SR; Hanisco, TF; Homeyer, CR; Huey, LG; Jensen, JB; Kaser, L; Kinnison, DE; Koenig, TK; Lamarque, JF; Liu, C; Luo, J; Luo, ZJ; Montzka, DD; Nicely, JM; Pierce, RB; Riemer, DD; Robinson, T; Romashkin, P; Saiz-Lopez, A; Schauffler, S; Shieh, O; Stell, MH; Ullmann, K; Vaughan, G; Volkamer, R; Wolfe, G (2017), THE CONVECTIVE TRANSPORT OF ACTIVE SPECIES IN THE TROPICS (CONTRAST) EXPERIMENT. Bull. Amer. Meteorol. Soc. Version: 1 98 (1) 106-+, issn: 0003-0007, ids: EH6UW, doi: 10.1175/BAMS-D-14-00272.1, PubMed ID: 29636590
  • Kille, N; Baidar, S; Handley, P; Ortega, I; Sinreich, R; Cooper, OR; Hase, F; Hannigan, JW; Pfister, G; Volkamer, R (2017), The CU mobile Solar Occultation Flux instrument: structure functions and emission rates of NH3, NO2 and C2H6. Atmos. Meas. Tech. Version: 1 10 (1) 373-392, issn: 1867-1381, ids: EM1PB, doi: 10.5194/amt-10-373-2017
  • Peters, E; Pinardi, G; Seyler, A; Richter, A; Wittrock, F; Bosch, T; Van Roozendael, M; Hendrick, F; Drosoglou, T; Bais, AF; Kanaya, Y; Zhao, XY; Strong, K; Lampel, J; Volkamer, R; Koenig, T; Ortega, I; Puentedura, O; Navarro-Comas, M; Gomez, L; Gonzalez, MY; Piters, A; Remmers, J; Wang, Y; Wagner, T; Wang, SS; Saiz-Lopez, A; Garcia-Nieto, D; Cuevas, CA; Benavent, N; Querel, R; Johnston, P; Postylyakov, O; Borovski, A; Elokhov, A; Bruchkouski, I; Liu, HR; Liu, C; Hong, QQ; Rivera, C; Grutter, M; Stremme, W; Khokhar, MF; Khayyam, J; Burrows, JP (2017), Investigating differences in DOAS retrieval codes using MAD-CAT campaign data. Atmos. Meas. Tech. Version: 1 10 (3) 955-978, issn: 1867-1381, ids: EP6GM, doi: 10.5194/amt-10-955-2017
  • Sareen, N; Waxman, EM; Turpin, BJ; Volkamer, R; Carlton, AG (2017), Potential of Aerosol Liquid Water to Facilitate Organic Aerosol Formation: Assessing Knowledge Gaps about Precursors and Partitioning. Environ. Sci. Technol. Version: 1 51 (6) 3327-3335, issn: 0013-936X, ids: EP6HA, doi: 10.1021/acs.est.6b04540, PubMed ID: 28169540
  • Berg, LK; Fast, JD; Barnard, JC; Burton, SP; Cairns, B; Chand, D; Comstock, JM; Dunagan, S; Ferrare, RA; Flynn, CJ; Hair, JW; Hostetler, CA; Hubbe, J; Jefferson, A; Johnson, R; Kassianov, EI; Kluzek, CD; Kollias, P; Lamer, K; Lantz, K; Mei, F; Miller, MA; Michalsky, J; Ortega, I; Pekour, M; Rogers, RR; Russell, PB; Redemann, J; Sedlacek, AJ; Segal-Rosenheimer, M; Schmid, B; Shilling, JE; Shinozuka, Y; Springston, SR; Tomlinson, JM; Tyrrell, M; Wilson, JM; Volkamer, R; Zelenyuk, A; Berkowitz, CM (2016), The Two-Column Aerosol Project: Phase IOverview and impact of elevated aerosol layers on aerosol optical depth. J. Geophys. Res.-Atmos. Version: 1 121 (1) 336-361, issn: 2169-897X, ids: DD3TH, doi: 10.1002/2015JD023848
  • Coburn, S; Dix, B; Edgerton, E; Holmes, CD; Kinnison, D; Liang, Q; ter Schure, A; Wang, SY; Volkamer, R (2016), Mercury oxidation from bromine chemistry in the free troposphere over the southeastern US. Atmos. Chem. Phys. Version: 1 16 (6) 3743-3760, issn: 1680-7316, ids: DK1VG, doi: 10.5194/acp-16-3743-2016
  • Ortega, I; Berg, LK; Ferrare, RA; Hair, JW; Hostetler, CA; Volkamer, R (2016), Elevated aerosol layers modify the O-2-O-2 absorption measured by ground-based MAX-DOAS. J. Quant. Spectrosc. Radiat. Transf. Version: 1 176 34-49, issn: 0022-4073, ids: DJ6WN, doi: 10.1016/j.jqsrt.2016.02.021
  • Griffith, SM; Hansen, RF; Dusanter, S; Michoud, V; Gilman, JB; Kuster, WC; Veres, PR; Graus, M; de Gouw, JA; Roberts, J; Young, C; Washenfelder, R; Brown, SS; Thalman, R; Waxman, E; Volkamer, R; Tsai, C; Stutz, J; Flynn, JH; Grossberg, N; Lefer, B; Alvarez, SL; Rappenglueck, B; Mielke, LH; Osthoff, HD; Stevens, PS (2016), Measurements of hydroxyl and hydroperoxy radicals during CalNex-LA: Model comparisons and radical budgets. J. Geophys. Res.-Atmos. Version: 1 121 (8) 4211-4232, issn: 2169-897X, ids: DP2KU, doi: 10.1002/2015JD024358
  • Hoyle, CR; Fuchs, C; Jarvinen, E; Saathoff, H; Dias, A; El Haddad, I; Gysel, M; Coburn, SC; Trostl, J; Bernhammer, AK; Bianchi, F; Breitenlechner, M; Corbin, JC; Craven, J; Donahue, NM; Duplissy, J; Ehrhart, S; Frege, C; Gordon, H; Hoppel, N; Heinritzi, M; Kristensen, TB; Molteni, U; Nichman, L; Pinterich, T; Prevot, ASH; Simon, M; Slowik, JG; Steiner, G; Tome, A; Vogel, AL; Volkamer, R; Wagner, AC; Wagner, R; Wexler, AS; Williamson, C; Winkler, PM; Yan, C; Amorim, A; Dommen, J; Curtius, J; Gallagher, MW; Flagan, RC; Hansel, A; Kirkby, J; Kulmala, M; Mohler, O; Stratmann, F; Worsnop, DR; Baltensperger, U (2016), Aqueous phase oxidation of sulphur dioxide by ozone in cloud droplets. Atmos. Chem. Phys. Version: 1 16 (3) 1693-1712, issn: 1680-7316, ids: DF3YI, doi: 10.5194/acp-16-1693-2016
  • Kim, SW; McDonald, BC; Baidar, S; Brown, SS; Dube, B; Ferrare, RA; Frost, GJ; Harley, RA; Holloway, JS; Lee, HJ; McKeen, SA; Neuman, JA; Nowak, JB; Oetjen, H; Ortega, I; Pollack, IB; Roberts, JM; Ryerson, TB; Scarino, AJ; Senff, CJ; Thalman, R; Trainer, M; Volkamer, R; Wagner, N; Washenfelder, RA; Waxman, E; Young, CJ (2016), Modeling the weekly cycle of NOx and CO emissions and their impacts on O-3 in the Los Angeles-South Coast Air Basin during the CalNex 2010 field campaign. J. Geophys. Res.-Atmos. Version: 1 121 (3) 1340-1360, issn: 2169-897X, ids: DF6QW, doi: 10.1002/2015JD024292
  • Sherwen, T; Evans, MJ; Carpenter, LJ; Andrews, SJ; Lidster, RT; Dix, B; Koenig, TK; Sinreich, R; Ortega, I; Volkamer, R; Saiz-Lopez, A; Prados-Roman, C; Mahajan, AS; Ordonez, C (2016), Iodines impact on tropospheric oxidants: a global model study in GEOS-Chem. Atmos. Chem. Phys. Version: 1 16 (2) 1161-1186, issn: 1680-7316, ids: DF3YH, doi: 10.5194/acp-16-1161-2016
  • Chen, QC; Miyazaki, Y; Kawamura, K; Matsumoto, K; Coburn, S; Volkamer, R; Iwamoto, Y; Kagami, S; Deng, YG; Ogawa, S; Ramasamy, S; Kato, S; Ida, A; Kajii, Y; Mochida, M (2016), Characterization of Chromophoric Water-Soluble Organic Matter in Urban, Forest, and Marine Aerosols by HR-ToF-AMS Analysis and Excitation Emission Matrix Spectroscopy. Environ. Sci. Technol. Version: 1 50 (19) 10351-10360, issn: 0013-936X, ids: DY1GC, doi: 10.1021/acs.est.6b01643, PubMed ID: 27518497
  • Miyazaki, Y; Coburn, S; Ono, K; Ho, DT; Pierce, RB; Kawamura, K; Volkamer, R (2016), Contribution of dissolved organic matter to submicron water-soluble organic aerosols in the marine boundary layer over the eastern equatorial Pacific. Atmos. Chem. Phys. Version: 1 16 (12) 7695-7707, issn: 1680-7316, ids: DQ7VZ, doi: 10.5194/acp-16-7695-2016
  • Tan, XX; Huang, Y; Diao, MH; Bansemer, A; Zondlo, MA; DiGangi, JP; Volkamer, R; Hu, YY (2016), An assessment of the radiative effects of ice supersaturation based on in situ observations. Geophys. Res. Lett. Version: 1 43 (20) 11039-11047, issn: 0094-8276, ids: EC7CQ, doi: 10.1002/2016GL071144
  • Hopfner, M; Volkamer, R; Grabowski, U; Grutter, M; Orphal, J; Stiller, G; von Clarmann, T; Wetzel, G (2016), First detection of ammonia (NH3) in the Asian summer monsoon upper troposphere. Atmos. Chem. Phys. Version: 1 16 (22) 14357-14369, issn: 1680-7316, ids: EC2UQ, doi: 10.5194/acp-16-14357-2016
  • Dix, B; Koenig, TK; Volkamer, R (2016), Parameterization retrieval of trace gas volume mixing ratios from Airborne MAX-DOAS. Atmos. Meas. Tech. Version: 1 9 (11) 5655-5675, issn: 1867-1381, ids: ED2VV, doi: 10.5194/amt-9-5655-2016
  • Fast, JD; Berg, LK; Zhang, K; Easter, RC; Ferrare, RA; Hair, JW; Hostetler, CA; Liu, Y; Ortega, I; Sedlacek, A; Shilling, JE; Shrivastava, M; Springston, SR; Tomlinson, JM; Volkamer, R; Wilson, J; Zaveri, RA; Zelenyuk, A (2016), Model representations of aerosol layers transported from North America over the Atlantic Ocean during the Two-Column Aerosol Project. J. Geophys. Res.-Atmos. Version: 1 121 (16) 9814-9848, issn: 2169-897X, ids: DZ9OQ, doi: 10.1002/2016JD025248
  • Ortega, I; Coburn, S; Berg, LK; Lantz, K; Michalsky, J; Ferrare, RA; Hair, J; Hostetler, CA; Volkamer, R (2016), The CU 2-D-MAX-DOAS instrument - Part 2: Raman scattering probability measurements and retrieval of aerosol optical properties. Atmos. Meas. Tech. Version: 1 9 (8) 3893-3910, issn: 1867-1381, ids: DW6YI, doi: 10.5194/amt-9-3893-2016
  • Li, JY; Mao, JQ; Min, KE; Washenfelder, RA; Brown, SS; Kaiser, J; Keutsch, FN; Volkamer, R; Wolfe, GM; Hanisco, TF; Pollack, IB; Ryerson, TB; Graus, M; Gilman, JB; Lerner, BM; Warneke, C; de Gouw, JA; Middlebrook, AM; Liao, J; Welti, A; Henderson, BH; McNeill, VF; Hall, SR; Ullmann, K; Donner, LJ; Paulot, F; Horowitz, LW (2016), Observational constraints on glyoxal production from isoprene oxidation and its contribution to organic aerosol over the Southeast United States. J. Geophys. Res.-Atmos. Version: 1 121 (16) 9849-9861, issn: 2169-897X, ids: DZ9OQ, doi: 10.1002/2016JD025331, PubMed ID: 29619286
  • Schmidt, JA; Jacob, DJ; Horowitz, HM; Hu, L; Sherwen, T; Evans, MJ; Liang, Q; Suleiman, RM; Oram, DE; Le Breton, M; Percival, CJ; Wang, S; Dix, B; Volkamer, R (2016), Modeling the observed tropospheric BrO background: Importance of multiphase chemistry and implications for ozone, OH, and mercury. J. Geophys. Res.-Atmos. Version: 1 121 (19) 11819-11835, issn: 2169-897X, ids: EA9PK, doi: 10.1002/2015JD024229
  • Sherwen, T; Schmidt, JA; Evans, MJ; Carpenter, LJ; Grossmann, K; Eastham, SD; Jacob, DJ; Dix, B; Koenig, TK; Sinreich, R; Ortega, I; Volkamer, R; Saiz-Lopez, A; Prados-Roman, C; Mahajan, AS; Ordonez, C (2016), Global impacts of tropospheric halogens (Cl, Br, I) on oxidants and composition in GEOS-Chem. Atmos. Chem. Phys. Version: 1 16 (18) 12239-12271, issn: 1680-7316, ids: DY8RD, doi: 10.5194/acp-16-12239-2016
  • Palacios, LG; Arroyo, PC; Aregahegn, KZ; Steimer, SS; Bartels-Rausch, T; Noziere, B; George, C; Ammann, M; Volkamer, R (2016), Heterogeneous photochemistry of imidazole-2-carboxaldehyde: HO2 radical formation and aerosol growth. Atmos. Chem. Phys. Version: 1 16 (18) 11823-11836, issn: 1680-7316, ids: DX7DS, doi: 10.5194/acp-16-11823-2016
  • Baidar, S; Kille, N; Ortega, I; Sinreich, R; Thomson, D; Hannigan, J; Volkamer, R (2016), Development of a digital mobile solar tracker. Atmos. Meas. Tech. Version: 1 9 (3) 963-972, issn: 1867-1381, ids: DL4NF, doi: 10.5194/amt-9-963-2016
  • Saiz-Lopez, A; Baidar, S; Cuevas, CA; Koenig, TK; Fernandez, RP; Dix, B; Kinnison, DE; Lamarque, JF; Rodriguez-Lloveras, X; Campos, TL; Volkamer, R (2015), Injection of iodine to the stratosphere. Geophys. Res. Lett. Version: 1 42 (16) 6852-6859, issn: 0094-8276, ids: CU3FY, doi: 10.1002/2015GL064796
  • Wang, SY; Schmidt, JA; Baidar, S; Coburn, S; Dix, B; Koenig, TK; Apel, E; Bowdalo, D; Campos, TL; Eloranta, E; Evans, MJ; DiGangi, JP; Zondlo, MA; Gao, RS; Haggerty, JA; Hall, SR; Hornbrook, RS; Jacob, D; Morley, B; Pierce, B; Reeves, M; Romashkin, P; ter Schure, A; Volkamer, R (2015), Active and widespread halogen chemistry in the tropical and subtropical free troposphere. Proc. Natl. Acad. Sci. U. S. A. Version: 1 112 (30) 9281-9286, issn: 0027-8424, ids: CN7ZW, doi: 10.1073/pnas.1505142112, PubMed ID: 26124148
  • Goss, NR; Waxman, EM; Coburn, SC; Koenig, TK; Thalman, R; Dommen, J; Hannigan, JW; Tyndall, GS; Volkamer, R (2015), Measurements of the Absorption Cross Section of (CHOCHO)-C-13-C-13 at Visible Wavelengths and Application to DOAS Retrievals. J. Phys. Chem. A Version: 1 119 (19) 4651-4657, issn: 1089-5639, ids: CI6YV, doi: 10.1021/jp511357s, PubMed ID: 25551419
  • Baidar, S; Hardesty, RM; Kim, SW; Langford, AO; Oetjen, H; Senff, CJ; Trainer, M; Volkamer, R (2015), Weakening of the weekend ozone effect over Californias South Coast Air Basin. Geophys. Res. Lett. Version: 1 42 (21) 9457-9464, issn: 0094-8276, ids: DB2KK, doi: 10.1002/2015GL066419
  • Spinei, E; Cede, A; Herman, J; Mount, GH; Eloranta, E; Morley, B; Baidar, S; Dix, B; Ortega, I; Koenig, T; Volkamer, R (2015), Ground-based direct-sun DOAS and airborne MAX-DOAS measurements of the collision-induced oxygen complex, O2O2, absorption with significant pressure and temperature differences. Atmos. Meas. Tech. Version: 1 8 (2) 793-809, issn: 1867-1381, ids: CC7OR, doi: 10.5194/amt-8-793-2015
  • Volkamer, R; Baidar, S; Campos, TL; Coburn, S; DiGangi, JP; Dix, B; Eloranta, EW; Koenig, TK; Morley, B; Ortega, I; Pierce, BR; Reeves, M; Sinreich, R; Wang, S; Zondlo, MA; Romashkin, PA (2015), Aircraft measurements of BrO, IO, glyoxal, NO2, H2O, O-2-O-2 and aerosol extinction profiles in the tropics: comparison with aircraft-/ship-based in situ and lidar measurements. Atmos. Meas. Tech. Version: 1 8 (5) 2121-2148, issn: 1867-1381, ids: CJ2BJ, doi: 10.5194/amt-8-2121-2015
  • Ortega, I; Koenig, T; Sinreich, R; Thomson, D; Volkamer, R (2015), The CU 2-D-MAX-DOAS instrument - Part 1: Retrieval of 3-D distributions of NO2 and azimuth-dependent OVOC ratios. Atmos. Meas. Tech. Version: 1 8 (6) 2371-2395, issn: 1867-1381, ids: CL6ZE, doi: 10.5194/amt-8-2371-2015
  • Waxman, EM; Elm, J; Kurten, T; Mikkelsen, KV; Ziemann, PJ; Vokamer, R (2015), Glyoxal and Methylglyoxal Setschenow Salting Constants in Sulfate, Nitrate, and Chloride Solutions: Measurements and Gibbs Energies. Environ. Sci. Technol. Version: 1 49 (19) 11500-11508, issn: 0013-936X, ids: CT2JZ, doi: 10.1021/acs.est.5b02782, PubMed ID: 26335375
  • Kurten, T; Elm, J; Prisle, NL; Mikkelsen, KV; Kampf, CJ; Waxman, EM; Volkamer, R (2015), Computational Study of the Effect of Glyoxal-Sulfate Clustering on the Henrys Law Coefficient of Glyoxal. J. Phys. Chem. A Version: 1 119 (19) 4509-4514, issn: 1089-5639, ids: CI6YV, doi: 10.1021/jp510304c, PubMed ID: 25408201
  • Thalman, R; Baeza-Romero, MT; Ball, SM; Borras, E; Daniels, MJS; Goodall, ICA; Henry, SB; Karl, T; Keutsch, FN; Kim, S; Mak, J; Monks, PS; Munoz, A; Orlando, J; Peppe, S; Rickard, AR; Rodenas, M; Sanchez, P; Seco, R; Su, L; Tyndall, G; Vazquez, M; Vera, T; Waxman, E; Volkamer, R (2015), Instrument intercomparison of glyoxal, methyl glyoxal and NO2 under simulated atmospheric conditions. Atmos. Meas. Tech. Version: 1 8 (4) 1835-1862, issn: 1867-1381, ids: CH2ET, doi: 10.5194/amt-8-1835-2015
  • Zhou, S; Gonzalez, L; Leithead, A; Finewax, Z; Thalman, R; Vlasenko, A; Vagle, S; Miller, LA; Li, SM; Bureekul, S; Furutani, H; Uematsu, M; Volkamer, R; Abbatt, J (2014), Formation of gas-phase carbonyls from heterogeneous oxidation of polyunsaturated fatty acids at the air-water interface and of the sea surface microlayer. Atmos. Chem. Phys. Version: 1 14 (3) 1371-1384, issn: 1680-7316, ids: AC2ZN, doi: 10.5194/acp-14-1371-2014
  • Coburn, S; Ortega, I; Thalman, R; Blomquist, B; Fairall, CW; Volkamer, R (2014), Measurements of diurnal variations and eddy covariance (EC) fluxes of glyoxal in the tropical marine boundary layer: description of the Fast LED-CE-DOAS instrument. Atmos. Meas. Tech. Version: 1 7 (10) 3579-3595, issn: 1867-1381, ids: AT2AE, doi: 10.5194/amt-7-3579-2014
  • Thalman, R; Zarzana, KJ; Tolbert, MA; Volkamer, R (2014), Rayleigh scattering cross-section measurements of nitrogen, argon, oxygen and air. J. Quant. Spectrosc. Radiat. Transf. Version: 1 147 171-177, issn: 0022-4073, ids: AN6GY, doi: 10.1016/j.jqsrt.2014.05.030
  • Knote, C; Hodzic, A; Jimenez, JL; Volkamer, R; Orlando, JJ; Baidar, S; Brioude, J; Fast, J; Gentner, DR; Goldstein, AH; Hayes, PL; Knighton, WB; Oetjen, H; Setyan, A; Stark, H; Thalman, R; Tyndall, G; Washenfelder, R; Waxman, E; Zhang, Q (2014), Simulation of semi-explicit mechanisms of SOA formation from glyoxal in aerosol in a 3-D model. Atmos. Chem. Phys. Version: 1 14 (12) 6213-6239, issn: 1680-7316, ids: AK5BH, doi: 10.5194/acp-14-6213-2014
  • Waxman, EM; Dzepina, K; Ervens, B; Lee-Taylor, J; Aumont, B; Jimenez, JL; Madronich, S; Volkamer, R (2013), Secondary organic aerosol formation from semi- and intermediate-volatility organic compounds and glyoxal: Relevance of O/C as a tracer for aqueous multiphase chemistry. Geophys. Res. Lett. Version: 1 40 (5) 978-982, issn: 0094-8276, ids: 134VG, doi: 10.1002/grl.50203
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  • Volkamer, R; Sheehy, P; Molina, LT; Molina, MJ (2010), Oxidative capacity of the Mexico City atmosphere - Part 1: A radical source perspective. Atmos. Chem. Phys. Version: 1 10 (14) 6969-6991, issn: 1680-7316, ids: 633PL, doi: 10.5194/acp-10-6969-2010
  • Sinreich, R; Coburn, S; Dix, B; Volkamer, R (2010), Ship-based detection of glyoxal over the remote tropical Pacific Ocean. Atmos. Chem. Phys. Version: 1 10 (23) 11359-11371, issn: 1680-7316, ids: 694XJ, doi: 10.5194/acp-10-11359-2010
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  • Sheehy, PM; Volkamer, R; Molina, LT; Molina, MJ (2010), Oxidative capacity of the Mexico City atmosphere - Part 2: A ROx radical cycling perspective. Atmos. Chem. Phys. Version: 1 10 (14) 6993-7008, issn: 1680-7316, ids: 633PL, doi: 10.5194/acp-10-6993-2010
  • Song, J; Lei, W; Bei, N; Zavala, M; de Foy, B; Volkamer, R; Cardenas, B; Zheng, J; Zhang, R; Molina, LT (2010), Ozone response to emission changes: a modeling study during the MCMA-2006/MILAGRO Campaign. Atmos. Chem. Phys. Version: 1 10 (8) 3827-3846, issn: 1680-7316, ids: 589WR, doi: 10.5194/acp-10-3827-2010
  • Aiken, AC; de Foy, B; Wiedinmyer, C; DeCarlo, PF; Ulbrich, IM; Wehrli, MN; Szidat, S; Prevot, ASH; Noda, J; Wacker, L; Volkamer, R; Fortner, E; Wang, J; Laskin, A; Shutthanandan, V; Zheng, J; Zhang, R; Paredes-Miranda, G; Arnott, WP; Molina, LT; Sosa, G; Querol, X; Jimenez, JL (2010), Mexico city aerosol analysis during MILAGRO using high resolution aerosol mass spectrometry at the urban supersite (T0) - Part 2: Analysis of the biomass burning contribution and the non-fossil carbon fraction. Atmos. Chem. Phys. Version: 1 10 (12) 5315-5341, issn: 1680-7316, ids: 618YC, doi: 10.5194/acp-10-5315-2010
  • Jobson, BT; Volkamer, RA; Velasco, E; Allwine, G; Westberg, H; Lamb, BK; Alexander, ML; Berkowitz, CM; Molina, LT (2010), Comparison of aromatic hydrocarbon measurements made by PTR-MS, DOAS and GC-FID during the MCMA 2003 Field Experiment. Atmos. Chem. Phys. Version: 1 10 (4) 1989-2005, issn: 1680-7316, ids: 559TS, doi: 10.5194/acp-10-1989-2010
  • Li, G; Lei, W; Zavala, M; Volkamer, R; Dusanter, S; Stevens, P; Molina, LT (2010), Impacts of HONO sources on the photochemistry in Mexico City during the MCMA-2006/MILAGO Campaign. Atmos. Chem. Phys. Version: 1 10 (14) 6551-6567, issn: 1680-7316, ids: 633PL, doi: 10.5194/acp-10-6551-2010
  • Thalman, R; Volkamer, R (2010), Inherent calibration of a blue LED-CE-DOAS instrument to measure iodine oxide, glyoxal, methyl glyoxal, nitrogen dioxide, water vapour and aerosol extinction in open cavity mode. Atmos. Meas. Tech. Version: 1 3 (6) 1797-1814, issn: 1867-1381, ids: 698DV, doi: 10.5194/amt-3-1797-2010
  • Dusanter, S; Vimal, D; Stevens, PS; Volkamer, R; Molina, LT (2009), Measurements of OH and HO2 concentrations during the MCMA-2006 field campaign - Part 1: Deployment of the Indiana University laser-induced fluorescence instrument. Atmos. Chem. Phys. Version: 1 9 (5) 1665-1685, issn: 1680-7316, ids: 418FA, doi: 10.5194/acp-9-1665-2009
  • Fortner, EC; Zheng, J; Zhang, R; Knighton, WB; Volkamer, RM; Sheehy, P; Molina, L; Andre, M (2009), Measurements of Volatile Organic Compounds Using Proton Transfer Reaction - Mass Spectrometry during the MILAGRO 2006 Campaign. Atmos. Chem. Phys. Version: 1 9 (2) 467-481, issn: 1680-7316, ids: 406WN, doi: 10.5194/acp-9-467-2009
  • Noda, J; Volkamer, R; Molina, MJ (2009), Dealkylation of Alkylbenzenes: A Significant Pathway in the Toluene, o-, m-, p-Xylene plus OH Reaction. J. Phys. Chem. A Version: 1 113 (35) 9658-9666, issn: 1089-5639, ids: 487EH, doi: 10.1021/jp901529k, PubMed ID: 19658391
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  • Dzepina, K; Volkamer, RM; Madronich, S; Tulet, P; Ulbrich, IM; Zhang, Q; Cappa, CD; Ziemann, PJ; Jimenez, JL (2009), Evaluation of recently-proposed secondary organic aerosol models for a case study in Mexico City. Atmos. Chem. Phys. Version: 1 9 (15) 5681-5709, issn: 1680-7316, ids: 482HW, doi: 10.5194/acp-9-5681-2009
  • Volkamer, R; Ziemann, PJ; Molina, MJ (2009), Secondary Organic Aerosol Formation from Acetylene (C2H2): seed effect on SOA yields due to organic photochemistry in the aerosol aqueous phase. Atmos. Chem. Phys. Version: 1 9 (6) 1907-1928, issn: 1680-7316, ids: 425GQ, doi: 10.5194/acp-9-1907-2009
  • Lei, W; Zavala, M; de Foy, B; Volkamer, R; Molina, MJ; Molina, LT (2009), Impact of primary formaldehyde on air pollution in the Mexico City Metropolitan Area. Atmos. Chem. Phys. Version: 1 9 (7) 2607-2618, issn: 1680-7316, ids: 431YL, doi: 10.5194/acp-9-2607-2009
  • Barnard, JC; Volkamer, R; Kassianov, EI (2008), Estimation of the mass absorption cross section of the organic carbon component of aerosols in the Mexico City Metropolitan Area. Atmos. Chem. Phys. Version: 1 8 (22) 6665-6679, issn: 1680-7316, ids: 389FP, doi: 10.5194/acp-8-6665-2008
  • Lei, W; Zavala, M; de Foy, B; Volkamer, R; Molina, LT (2008), Characterizing ozone production and response under different meteorological conditions in Mexico City. Atmos. Chem. Phys. Version: 1 8 (24) 7571-7581, issn: 1680-7316, ids: 393YG, doi: 10.5194/acp-8-7571-2008
  • Myriokefalitakis, S; Vrekoussis, M; Tsigaridis, K; Wittrock, F; Richter, A; Bruhl, C; Volkamer, R; Burrows, JP; Kanakidou, M (2008), The influence of natural and anthropogenic secondary sources on the glyoxal global distribution. Atmos. Chem. Phys. Version: 1 8 (16) 4965-4981, issn: 1680-7316, ids: 343OR, doi: 10.5194/acp-8-4965-2008
  • Zheng, J; Zhang, R; Fortner, EC; Volkamer, RM; Molina, L; Aiken, AC; Jimenez, JL; Gaeggeler, K; Dommen, J; Dusanter, S; Stevens, PS; Tie, X (2008), Measurements of HNO3 and N2O5 using ion drift-chemical ionization mass spectrometry during the MILAGRO/MCMA-2006 campaign. Atmos. Chem. Phys. Version: 1 8 (22) 6823-6838, issn: 1680-7316, ids: 389FP, doi: 10.5194/acp-8-6823-2008
  • Lei, W; de Foy, B; Zavala, M; Volkamer, R; Molina, LT (2007), Characterizing ozone production in the Mexico City Metropolitan Area: a case study using a chemical transport model. Atmos. Chem. Phys. Version: 1 7 1347-1366, issn: 1680-7316, ids: 143HX, doi: 10.5194/acp-7-1347-2007
  • Volkamer, R; Martini, FS; Molina, LT; Salcedo, D; Jimenez, JL; Molina, MJ (2007), A missing sink for gas-phase glyoxal in Mexico City: Formation of secondary organic aerosol. Geophys. Res. Lett. Version: 1 34 (19) , Art. No. L19807, issn: 0094-8276, ids: 221HI, doi: 10.1029/2007GL030752
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  • Sinreich, R; Filsinger, F; Friess, U; Platt, U; Sebastian, O; Wagner, T; Volkamer, R; Kern, C (2007), MAX-DOAS detection of glyoxal during ICARTT 2004. Atmos. Chem. Phys. Version: 1 7 1293-1303, issn: 1680-7316, ids: 138XO, doi: 10.5194/acp-7-1293-2007
  • Shirley, TR; Brune, WH; Ren, X; Mao, J; Lesher, R; Cardenas, B; Volkamer, R; Molina, LT; Molina, MJ; Lamb, B; Velasco, E; Jobson, T; Alexander, M (2006), Atmospheric oxidation in the Mexico City Metropolitan Area (MCMA) during April 2003. Atmos. Chem. Phys. Version: 1 6 2753-2765, issn: 1680-7316, ids: 061CP, doi: 10.5194/acp-6-2753-2006
  • Dunlea, EJ; Herndon, SC; Nelson, DD; Volkamer, RM; Lamb, BK; Allwine, EJ; Grutter, M; Villegas, CRR; Marquez, C; Blanco, S; Cardenas, B; Kolb, CE; Molina, LT; Molina, MJ (2006), Technical note: Evaluation of standard ultraviolet absorption ozone monitors in a polluted urban environment. Atmos. Chem. Phys. Version: 1 6 3163-3180, issn: 1680-7316, ids: 069HR, doi: 10.5194/acp-6-3163-2006
  • Volkamer, R; Jimenez, JL; San Martini, F; Dzepina, K; Zhang, Q; Salcedo, D; Molina, LT; Worsnop, DR; Molina, MJ (2006), Secondary organic aerosol formation from anthropogenic air pollution: Rapid and higher than expected. Geophys. Res. Lett. Version: 1 33 (17) , Art. No. L17811, issn: 0094-8276, ids: 085ZE, doi: 10.1029/2006GL026899
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  • Garcia, AR; Volkamer, R; Molina, LT; Molina, MJ; Samuelson, J; Mellqvist, J; Galle, B; Herndon, SC; Kolb, CE (2006), Separation of emitted and photochemical formaldehyde in Mexico City using a statistical analysis and a new pair of gas-phase tracers. Atmos. Chem. Phys. Version: 1 6 4545-4557, issn: 1680-7316, ids: 093YG, doi: 10.5194/acp-6-4545-2006
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  • Wittrock, F; Richter, A; Oetjen, H; Burrows, JP; Kanakidou, M; Myriokefalitakis, S; Volkamer, R; Beirle, S; Platt, U; Wagner, T (2006), Simultaneous global observations of glyoxal and formaldehyde from space. Geophys. Res. Lett. Version: 1 33 (16) , Art. No. L16804, issn: 0094-8276, ids: 078JO, doi: 10.1029/2006GL026310
  • Kleffmann, J; Lorzer, JC; Wiesen, P; Kern, C; Trick, S; Volkamer, R; Rodenas, M; Wirtz, K (2006), Intercomparison of the DOAS and LOPAP techniques for the detection of nitrous acid (HONO). Atmos. Environ. Version: 1 40 (20) 3640-3652, issn: 1352-2310, ids: 057ID, doi: 10.1016/j.atmosenv.2006.03.027