Research Publications

Publications by Detlev Helmig

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Jason EvansDetlev Helmig 2017: Investigation of the influence of transport from oil and natural gas regions on elevated ozone levels in the northern Colorado Front Range. Journal of the Air and Waste Management Association, 67(2): 196-211. DOI: 10.1080/10962247.2016.1226989

Tzompa-Sosa, Z. A., Mahieu, E., Franco, B., Keller, C. A., Turner, A. J., Detlev HelmigAlan FriedDirk RichterPetter WeibringJames Walega, Yacovitch, T. I., Herndon, S. C., Blake, D. R., Hase, F., Hannigan, J. W., Conway, S., Strong, K., Schneider, M., Fischer, E. V. 2017: Revisiting global fossil fuel and biofuel emissions of ethane. Journal of Geophysical Research—Atmospheres, 122(4): 2493-2512. DOI: 10.1002/2016JD025767

Schnell, R. C., Johnson, B. J., Oltmans, S. J., Cullis, P., Sterling, C., Hall, E., Jordan, A., Detlev Helmig, Petrón, G., Ahmadov, R., Wendell, J., Albee, R., Boylan, P., Chelsea ThompsonJason EvansJacques Hueber, Curtis, A. J., Jeong-Hoo Park 2016: Quantifying wintertime boundary layer ozone production from frequent profile measurements in the Uinta Basin, UT, oil and gas region. Journal of Geophysical Research—Atmospheres, 121(18): 11038-11054. DOI: 10.1002/2016JD025130

Detlev HelmigSam RossabiJacques Hueber, Tans, P., Montzka, S. A., Masarie, K., Thoning, K., Plass-Duelmer, C., Claude, A., Carpenter, L. J., Lewis, A. C., Punjabi, S., Reimann, S., Vollmer, M. K., Steinbrecher, R., Hannigan, J. W., Emmons, L. K., Mahieu, E., Franco, B., Smale, D., Pozzer, A. 2016: Reversal of global atmospheric ethane and propane trends largely due to US oil and natural gas production. Nature Geoscience, 9(7): 490-495. DOI: 10.1038/NGEO2721

Van Dam, B., Detlev Helmig, Doskey, P. V., Oltmans, S. J. 2016: Summertime surface O3 behavior and deposition to tundra in the Alaskan Arctic. Journal of Geophysical Research—Atmospheres, 121(13): 8055-8066. DOI: 10.1002/2015JD023914

Legrand, M., Preunkert, S., Savarino, J., Frey, M. M., Kukui, A., Detlev Helmig, Jourdain, B., Jones, A. E., Weller, R., Brough, N., Gallee, H. 2016: Inter-annual variability of surface ozone at coastal (Dumont d'Urville, 2004-2014) and inland (Concordia, 2007-2014) sites in East Antarctica. Atmospheric Chemistry and Physics, 16(12): 8053-8069. DOI: 10.5194/acp-16-8053-2016

Angot, H., Magand, O., Detlev Helmig, Ricaud, P., Quennehen, B., Gallee, H., Del Guasta, M., Sprovieri, F., Pirrone, N., Savarino, J., Dommergue, A. 2016: New insights into the atmospheric mercury cycling in central Antarctica and implications on a continental scale. Atmospheric Chemistry and Physics, 16(13): 8249-8264. DOI: 10.5194/acp-16-8249-2016

Hu, L., Millet, D. B., Baasandorj, M., Griffis, T. J., Turner, P., Detlev Helmig, Curtis, A., Jacques Hueber 2015: Isoprene emissions and impacts over an ecological transition region in the US Upper Midwest inferred from tall tower measurements. Journal of Geophysical Research—Atmospheres, 120(8): 3553-3571. DOI: 10.1002/2014JD022732

China, S., Scarnato, B., Owen, R. C., Zhang, B., Ampadu, M. T., Kumar, S., Dzepina, K., Dziobak, M. P., Fialho, P., Perlinger, J. A., Jacques HueberDetlev Helmig, Mazzoleni, L. R., Mazzoleni, C. 2015: Morphology and mixing state of aged soot particles at a remote marine free troposphere site: Implications for optical properties. Geophysical Research Letters, 42(4): 1243-1250. DOI: 10.1002/2014GL062404

Dzepina, K., Mazzoleni, C., Fialho, P., China, S., Zhang, B., Owen, R. C., Detlev HelmigJacques Hueber, Kumar, S., Perlinger, J. A., Kramer, L. J., Dziobak, M. P., Ampadu, M. T., Olsen, S., Wuebbles, D. J., Mazzoleni, L. R. 2015: Molecular characterization of free tropospheric aerosol collected at the Pico Mountain Observatory: A case study with a long-range transported biomass burning plume. Atmospheric Chemistry and Physics, 15(9), 5047-5068. DOI: 10.5194/acp-15-5047-2015

Preunkert, S., Legrand, M., Frey, M. M., Kukui, A., Savarino, J., Gallée, H., King, M., Jourdain, B., Vicars, W., Detlev Helmig 2015: Formaldehyde (HCHO) in air, snow, and interstitial air at Concordia (East Antarctic Plateau) in summer. Atmospheric Chemistry and Physics, 15: 6689-6705. DOI: 10.5194/acp-15-6689-2015

Detlev Helmig, Munoz, M., Jacques Hueber, Mazzoleni, C., Mazzoleni, L., Owen, R.C., Val Martin, M., Fialho, P., Plass-Duelmer, C., Palmer, P. I., Lewis, A. C., Pfister, G. 2015: Climatology and atmospheric chemistry of the non-methane hydrocarbons ethane and propane over the North Atlantic. Elementa, 3: article 000054. DOI: 10.12952/journal.elementa.000054

Murray, K. A., Kramer, L. J., Doskey, P. V., Ganzeveld, L., Brian SeokBrie Van DamDetlev Helmig 2015: Dynamics of ozone and nitrogen oxides at Summit, Greenland: II. Simulating snowpack chemistry during a spring high ozone event with a 1-D process-scale model. Atmospheric Environment, 117: 110-123. DOI: 10.1016/j.atmosenv.2015.07.004

Schultz, M. G., Akimoto, H., Bottenheim, J., Buchmann, B., Galbally, I. E., Gilge, S., Detlev Helmig, Koide, H., Lewis, A. C., Novelli, P. C., Plass-Dülmer, C., Ryerson, T. B., Steinbacher, M., Steinbrecher, R., Tarasova, O., Tørseth, K., Thouret, V., Zellweger, C. 2015: The Global Atmosphere Watch reactive gases measurement network. Elementa, 3: article 000067. DOI: 10.12952/journal.elementa.000067

Kramer, L. J., Detlev Helmig, Burkhart, J. F., Stohl, A., Oltmans, S., Honrath, R. E. 2015: Seasonal variability of atmospheric nitrogen oxides and non-methane hydrocarbons at the GEOSummit station, Greenland. Atmospheric Chemistry and Physics, 15(12): 6827-6849. DOI: 10.5194/acp-15-6827-2015

Emmons, L. K., Arnold, S. R., Monks, S. A., Huijnen, V., Tilmes, S., Law, K. S., Thomas, J. L., Raut, J.-C., Bouarar, I., Turquety, S., Long, Y., Duncan, B., Steenrod, S., Strode, S. Flemming, J., Mao, J., Langner, J., Thompson, A. M., Tarasick, D., Apel, E. C., Blake, D. R., Cohen, R. C., Dibb, J., Diskin, G. S., Alan Fried, Hall, S. R., Huey, L. G., Weinheimer, A. J., Wisthaler, A., Mikoviny, T., Nowak, J., Peischl, J., Roberts, J. M., Ryerson, T., Warneke, C., Detlev Helmig 2015: The POLARCAT Model Intercomparison Project (POLMIP): Overview and evaluation with observations. Atmospheric Chemistry and Physics, 15(12): 6721-6744. DOI: 10.5194/acp-15-6721-2015

Ahmadov, R., McKeen, S., Trainer, M., Banta, R., Brewer, A., Brown, S., Edwards, P. M., de Gouw, J. A., Frost, G. J., Gilman, J., Detlev Helmig, Johnson, B., Karion, A., Koss, A., Langford, A., Lerner, B., Olson, J., Oltmans, S., Peischl, J., Petron, G., Pichugina, Y., Roberts, J. M., Ryerson, T., Schnell, R., Senff, C., Sweeney, C., Thompson, C., Veres, P. R., Warneke, C., Wild, R., Williams, E. J., Yuan, B., Zamora, R. 2015: Understanding high wintertime ozone pollution events in an oil- and natural gas-producing region of the western US. Atmospheric Chemistry and Physics, 15(1): 411-429. DOI: 10.5194/acp-15-411-2015

Lawson, S. J., Selleck, P. W., Galbally, I. E., Keywood, M. D., Harvey, M. J., Lerot, C., Detlev Helmig, Ristovski, Z. 2015: Seasonal in situ observations of glyoxal and methylglyoxal over the temperate oceans of the Southern Hemisphere. Atmospheric Chemistry and Physics, 15(1): 223-240. DOI: 10.5194/acp-15-223-2015

Petron, G., Karion, A., Sweeney, C., Miller, B. R., Montzka, S. A., Frost, G. J., Trainer, M., Tans, P., Andrews, A., Kofler, J., Detlev Helmig, Guenther, D., Dlugokencky, E., Lang, P., Newberger, T., Wolter, S., Hall, B., Novelli, P., Brewer, A., Conley, S., Hardesty, M., Banta, R., White, A., Noone, D., Wolfe, D., Schnell, R. 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): 6836-6852. DOI: 10.1002/2013JD021272

Trowbridge, A. M., Daly, R. W., Detlev Helmig, Stoy, P. C., Monson, R. K. 2014: Herbivory and climate interact serially to control monoterpene emissions from pinyon pine forests. Ecology, 95: 1591-1603. DOI: 10.1890/13-0989.1

Rhoderick, G. C., Duewer, D. L., Apel, E., Baldan, A., Hall, B., Harling, A., Detlev Helmig, Heo, G. S., Jacques Hueber, Kim, M. E., Kim, Y. D., Miller, B., Montzka, S., Riemer, D. 2014: International comparison of a hydrocarbon gas standard at the picomol per mol level. Analytical Chemistry, 86(5): 2580-2589. DOI: 10.1021/ac403761u

Patrick BoylanDetlev Helmig, Staebler, R., Turnipseed, A., Fairall, C. W., Neff, W. 2014: Boundary layer dynamics during the Ocean-Atmosphere-Sea-Ice-Snow (OASIS) 2009 experiment at Barrow, AK. Journal of Geophysical Research—Atmospheres, 119(5): 2261-2278. DOI: 10.1002/2013JD020299

Curtis, A., Detlev Helmig, Baroch, C., Daly, R., Davis, S. 2014: Biogenic volatile organic compound emissions from nine tree species used in an urban tree-planting program. Atmospheric Environment, 95: 634-643. DOI: 10.1016/j.atmosenv.2014.06.035

Zhang, B., Owen, R. C., Perlinger, J. A., Kumar, A., Wu, S., Val Martin, M., Kramer, L., Detlev Helmig, Honrath, R. E. 2014: A semi-Lagrangian view of ozone production tendency in North American outflow in the summers of 2009 and 2010. Atmospheric Chemistry and Physics, 14, 2267-2287. DOI: 10.5194/acp-14-2267-2014

Edwards, P. M., Brown, S. S., Roberts, J. M., Ahmadov, R., Banta, R. M., deGouw, J. A., Dube, W. P., Field, R. A., Flynn, J. H., Gilman, J. B., Graus, M., Detlev Helmig, Koss, A., Langford, A. O., Lefer, B. L., Lerner, B. M., Li, R., Li, S.-M., McKeen, S. A., Murphy, S. M., Parrish, D. D., Senff, C. J., Soltis, J., Stutz, J., Sweeney, C., Chelsea Thompson, Trainer, M. K., Tsai, C., Veres, P. R., Washenfelder, R. A., Warneke, C., Wild, R. J., Young, C. J., Yuan, B., Zamora, R. 2014: High winter ozone pollution from carbonyl photolysis in an oil and gas basin. Nature, 514(7522): 351+. DOI: 10.1038/nature13767

Kumar, A., Wu, S., Weise, M. F., Honrath, R., Owen, R. C., Detlev Helmig, Kramer, L., Val Martin, M., Li, Q. 2013: Free-troposphere ozone and carbon monoxide over the North Atlantic for 2001-2011. Atmospheric Chemistry and Physics, 13: 12537-12547. DOI: 10.5194/acp-13-12537-2013

Edwards, P. M., Young, C. J., Aikin, K., deGouw, J. A., Dubé, W. P., Geiger, F., Gilman, J., Detlev Helmig, Holloway, J. S., Kercher, J., Lerner, B., Martin, R., McLaren, R., Parrish, D.D., Peischl, J., Roberts, J. M., Ryerson, T. B., Thornton, J., Warneke, C., Williams, E. J., Brown, S. S. 2013: Ozone photochemistry in an oil and natural gas extraction region during winter: Simulations of a snow-free season in the Uintah Basin, Utah. Atmospheric Chemistry and Physics, 13, 8955-8971. DOI: 10.5194/acp-13-8955-2013

Palmer, P. I., Parrington, M., Lee, J. D., Lewis, A. C., Rickard, A. R., Bernath, P. F., Duck, T. J., Waugh, D. L., Tarasick, D. W., Andrews, S., Aruffo, E., Bailey, L. J., Barrett, E., Bauguitte, S. J.-B., Curry, K. R., Di Carlo, P., Chisholm, L., Dan, L., Forster, G., Franklin, J. E., Gibson, M. D., Griffin, D., Detlev Helmig, Hopkins, J. R., Hopper, J. T., Jenkin, M. E., Kindred, D., Kliever, J., Le Breton, M., Matthiesen, S., Maurice, M., Moller, S., Moore, D. P., Oram, D. E., O’Shea, S. J., Owen R. C., Pagniello, C. M. L. S., Pawson, S., Percival, C. J., Pierce, J. R., Punjabi, S., Purvis, R. M., Remedios, J. J., Rotermund, K. M., Sakamoto, K. M., da Silva, A. M., Strawbridge, K. B., Strong, K., Taylor, J., Trigwell, R., Tereszchuk, K. A., Walker, K. A., Weaver, D., Whaley, C., Young, J. C. 2013: Quantifying the impact of BOReal forest fires on Tropospheric oxidants over the Atlantic using Aircraft and Satellites (BORTAS) experiment: Design, execution and science overview. Atmospheric Chemistry and Physics, 13: 6239-6261. DOI: 10.5194/acp-13-6239-2013

Hu, L., Millet, D. B., Kim, S. Y., Wells, K. C., Griffis, T. J., Fischer, E. V., Detlev HelmigJacques Hueber, Curtis, A. 2013: North American acetone sources determined from tall tower measurements and inverse modeling. Atmospheric Chemistry and Physics, 13(6): 3379-3392. DOI: 10.5194/acp-13-3379-2013

Brie Van DamDetlev Helmig, Burkhart, J. F., Obrist, D., Oltmans, S. J. 2013: Springtime boundary layer O3 and GEM depletion at Toolik Lake, Alaska. Journal of Geophysical Research–Atmospheres, 118(8): 3382-3391. DOI: 10.1002/jgrd.50213

Simpson, I. J., Andersen, M. P. S., Meinardi, S., Bruhwiler, L., Blake, N. J., Detlev Helmig, Rowland, F. S., Blake, D. R. 2012: Long-term decline of global atmospheric ethane concentrations and implications for methane. Nature, 488: 490-494. DOI: 10.1038/nature11342

Parrington, M., Palmer, P. I., Henze, D. K., Tarasick, D. W., Hyer, E. J., Owen, R. C., Detlev Helmig, Clerbaux, C., Bowman, K. W., Deeter, M. N., Barratt, E. M., Coheur, P.-F., Hurtmans, D., Jiang, Z., George, M., Worden, J. R. 2012: The influence of boreal biomass burning emissions on the distribution of tropospheric ozone over North America and the North Atlantic during 2010. Atmospheric Chemistry and Physics, 12(4): 2077-2098. DOI: 10.5194/acp-12-2077-2012

Detlev Helmig, Lang, E. K., Bariteau, L., Patrick Boylan, Fairall, C. W., Ganzeveld, L., Hare, J. E., Jacques Hueber, Pallandt, M. 2012: Atmosphere-ocean ozone fluxes during the TexAQS 2006, STRATUS 2006, GOMECC 2007, GasEx 2008, and AMMA 2008 cruises. Journal of Geophysical Research-Atmospheres, 117: D04305. DOI: 10.1029/2011JD015955

Bryan, A. M., Bertman, S. B., Carroll, M. A., Dusanter, S., Edwards, G. D., Forkel, R., Griffith, S., Guenther, A. B., Hansen, R. F., Detlev Helmig, Jobson, B. T., Keutsch, F. N., Lefer, B. L., Pressley, S. N., Shepson, P. B., Stevens, P. S., Steiner, A. L. 2012: In-canopy gas-phase chemistry during CABINEX 2009: Sensitivity of a 1-D canopy model to vertical mixing and isoprene chemistry. Atmospheric Chemistry and Physics, 12: 8829-8849. DOI: 10.5194/acp-12-8829-2012

Baghi, R., Detlev Helmig, Guenther, A., Duhl, T., Daly, R. 2012: Contribution of flowering trees to urban atmospheric biogenic volatile organic compound emissions. Biogeosciences, 9: 3777-3785. DOI: 10.5194/bg-9-3777-2012

Detlev HelmigPatrick Boylan, Johnson, B., Oltmans, S., Fairall, C., Staebler, R., Weinheimer, A., Orlando, J., Knapp, D. J., Montzka, D. D., Flocke, F., Friess, U., Sihler, H., Shepson, P. B. 2012: Ozone dynamics and snow-atmosphere exchanges during ozone depletion events at Barrow, Alaska. Journal of Geophysical Research-Atmospheres, 117: D20303. DOI: 10.1029/2012JD017531

Pratt, K. A., Mielke, L. H., Shepson, P. B., Bryan, A. M., Steiner, A. L., Ortega, J., Daly, R., Detlev Helmig, Vogel, C. S., Griffith, S., Dusanter, S., Stevens, P. S., Alaghmand, M. 2012: Contributions of individual reactive biogenic volatile organic compounds to organic nitrates above a mixed forest. Atmospheric Chemistry and Physics, 12(21): 10125-10143. DOI: 10.5194/acp-12-10125-2012

Brodin, M., Detlev Helmig, Johnson, B., Oltmans, J. 2012: Comparison of ozone concentrations on a surface elevation gradient with balloon-borne ozone sonde measurements. Atmospheric Environment, 45(31): 5431-5439. DOI: 10.1016/j.atmosenv.2011.07.002

Edson, J. B., Fairall, C. W., Bariteau, L., Zappa, C. J., Cifuentes-Lorenzen, A., McGillis, W. R., Pezoa, S., Hare, J. E., Detlev Helmig 2011: Direct covariance measurement of CO2 gas transfer velocity during the 2008 Southern Ocean Gas Exchange Experiment: Wind speed dependency. Journal of Geophysical Research-Oceans, 116: C00F10. DOI: 10.1029/2011JC007022

Bocquet, F., Detlev HelmigBrie Van Dam, Fairall, C. W. 2011: Evaluation of the flux gradient technique for measurement of ozone fluxes over snowpack at Summit, Greenland. Atmospheric Measurement Techniques, 4: 2305 2321. DOI: 10.5194/amt-4-2305-2011

Fairall, C. W., Yang, M., Bariteau, L., Edson, J. B., Detlev Helmig, McGillis, W., Pezoa, S., Hare, J. E., Huebert, B., Blomquist, B. 2011: Implementation of the coupled ocean-atmosphere response experiment flux algorithm with CO2, dimethyl sulfide, and O3. Journal of Geophysical Research Oceans, 116: C00F09. DOI: 10.1029/2010JC006884

Grachev, A. A., Bariteau, L., Fairall, C. W., Hare, J. E., Detlev HelmigJacques Hueber, Lang, E. K. 2011: Turbulent fluxes and transfer of trace gases from ship-based measurements during TexAQS 2006. Journal of Geophysical Research Atmospheres, 116: D13110. DOI: 10.1029/2010JD015502

Hu, L., Millet, D. B., Mohr, M. J., Wells, K. C., Griffis, T. J., Detlev Helmig 2011: Sources and seasonality of atmospheric methanol based on tall tower measurements in the US Upper Midwest. Atmospheric Chemistry and Physics, 11: 11145-11156. DOI: 10.5194/acp-11-11145-2011

Bariteau, L., Detlev Helmig, Fairall, C. W., Hare, J. E., Jacques Hueber, Lang, E. K. 2010: Determination of oceanic ozone deposition by ship-borne eddy covariance flux measurements. Atmospheric Measurement Techniques, 3(2): 441 455.

Brodin, M., Detlev Helmig, Oltmans, S. 2010: Seasonal ozone behavior along an elevation gradient in the Colorado Front Range Mountains. Atmospheric Environment, 44(39): 5305 5315, DOI: 10.1016/j.atmosenv.2010.06.033

Pozzer, A., Pollmann, J., Taraborrelli, D., Joeckel, P., Detlev Helmig, Tans, P. P., Jacques Hueber, Lelieveld, J. 2010: Observed and simulated global distribution and budget of atmospheric C2-C5 alkanes. Atmospheric Chemistry and Physics, 10(9): 4403 4422, DOI: 10.5194/acp-10-4403-2010

Ganzeveld, L., Detlev Helmig, Fairall, C. W., Hare, J., Pozzer, A. 2009: Atmosphere-ocean ozone exchange: a global modeling study of biogeochemical, atmospheric, and waterside turbulence dependencies. Global Biogeochemical Cycles, 23: GB4021, DOI: 10.1029/2008GB003301

Detlev Helmig, Apel, E., Blake, D., Ganzeveld., L., Lefer, B. L., Meinardi, S., Swanson, A. L. 2009: Release and uptake of volatile inorganic and organic gases through the snowpack at Niwot Ridge, Colorado. Biogeochemistry, 95(1): 167 183, DOI: 10.1007/s10533-009-9326-8

Detlev Helmig, Bottenheim, J. Galbally, I. E., Lewis, A., Milton, M. J. T., Penkett, S., Plass-Duelmer, C., Reimann, S., Tans, P. P., Thiel, S. 2009: Volatile organic compounds in the global atmosphere. Eos, Transactions of the American Geophysical Union, 90(52): 513 514, DOI: 10.1029/2009EO520001

Detlev Helmig, Cohen, L. D., Bocquet, F., Oltmans, S., Grachev, A., Neff, W. 2009: Spring and summertime diurnal surface ozone fluxes over the polar snow at Summit, Greenland. Geophysical Research Letters, 36: L08809, DOI: 10.1029/2008GL036549

Kim, S., Karl, T., Detlev Helmig, Daly, R., Rasmussen, R., Guenther, A. 2009: Measurement of atmospheric sesquiterpenes by proton transfer reaction-mass spectrometry (PTR-MS). Atmospheric Measurement Techniques, 2(1): 99 112.

Ortega, J., Detlev Helmig 2008: Approaches for quantifying reactive and low-volatility biogenic organic compound emissions by vegetation enclosure techniques Part A. Chemosphere, 72(3): 343 364. DOI: 10.1016/j.chemosphere.2007.11.020

Duhl, T. R., Detlev Helmig, Guenther, A. 2008: Sesquiterpene emissions from vegetation: A review. Biogeosciences, 5(3): 761-777.

Barkley, M. P., Palmer, P. I., Kuhn, U., Kesselmeier, J., Chance, K., Kurosu, T. P., Martin, R. V., Detlev Helmig, Guenther, A. 2008: Net ecosystem fluxes of isoprene over tropical South America inferred from GOME observations of HCHO columns. Journal of Geophysical Research Atmospheres, 113(D20): D20304. DOI: 10.1029/2008JD009863

Davis, D. D., Seelig, J., Huey, G., Crawford, J., Chen, G., Wang, Y., Buhr, M., Detlev Helmig, Neff, W., Blake, D., Arimoto, R., Eisele, F. 2008: A reassessment of Antarctic plateau reactive nitrogen based on ANTCI 2003 airborne and ground based measurements. Atmospheric Environment, 42(12): 2831 2848. DOI: 10.1016/j.atmosenv.2007.07.039

Eisele, F., Davis, D. D., Detlev Helmig, Oltmans, S. J., Neff, W., Huey, G., Tanner, D., Chen, G., Crawford, J., Arimoto, R., Buhr, M., Mauldin, L., Hutterli, M., Dibb, J., Blake, D., Brooks, S. B., Johnson, B., Roberts, J. M., Wang, Y., Tan, D., Flocke, F. 2008: Antarctic Tropospheric Chemistry Investigation (ANTCI) 2003 overview. Atmospheric Environment, 42(12): 2749 2761. DOI: 10.1016/j.atmosenv.2007.04.013

Detlev Helmig, Johnson, B. J., Oltmans, S.J., Neff, W., Eisele, F., Davis, D. D. 2008: Elevated ozone in the boundary layer at South Pole. Atmospheric Environment, 42(12): 2788 2803. DOI: 10.1016/j.atmosenv.2006.12.032

Detlev Helmig, Johnson, B. J., Warshawsky, M., Morse, T., Neff, W. D., Eisele, F., Davis, D. D. 2008: Nitric oxide in the boundary-layer at South Pole during the Antarctic Tropospheric Chemistry Investigation (ANTCI). Atmospheric Environment, 42(12): 2817 2830. DOI: 10.1016/j.atmosenv.2007.03.061

Detlev Helmig, Tanner, D. M., Honrath, R. E., Owen, R. C., Parrish, D. D. 2008: Nonmethane hydrocarbons at Pico Mountain, Azores: 1. Oxidation chemistry in the North Atlantic region. Journal of Geophysical Research Atmospheres, 113(D20): D20S91. DOI: 10.1029/2007JD008930

Honrath, R. E., Detlev Helmig, Owen, R. C., Parrish, D. D., Tanner, D. M. 2008: Nonmethane hydrocarbons at Pico Mountain, Azores: 2. Event-specific analyses of the impacts of mixing and photochemistry on hydrocarbon ratios. Journal of Geophysical Research Atmospheres, 113(D20): D20S92. DOI: 10.1029/2008JD009832

Johnson, B. J., Detlev Helmig, Oltmans, S. J. 2008: Evaluation of ozone measurements from a tethered balloon-sampling platform at South Pole Station in December 2003. Atmospheric Environment, 42(12): 2780 2787. DOI: 10.1016/j.atmosenv.2007.03.043

Neff, W., Detlev Helmig, Garchev, A., Davis, D. 2008: A study of boundary layer behavior associated with high NO concentrations at the South Pole using a minisodar, tethered balloon, and sonic anemometer. Atmospheric Environment, 42(12): 2762 2779. DOI: 10.1016/j.atmosenv.2007.01.033

Oltmans, S. J., Johnson, B. J., Detlev Helmig 2008: Episodes of high surface ozone amounts at South Pole during summer and their impact on the long-term surface ozone variation. Atmospheric Environment, 42(12): 2804 2816. DOI: 10.1016/j.atmosenv.2007.01.020

Ortega, J., Detlev Helmig, Daly, R. W., Tanner, D. M., Guenther, A. B., Herrick, J. D. 2008: Approaches for quantifying reactive and low-volatility biogenic organic compound emissions by vegetation enclosure techniques Part B: Applications. Chemosphere, 72(3): 365 380. DOI: 10.1016/j.chemosphere.2008.02.054

Pollmann, J., Detlev HelmigJacques Hueber, Plass-Duelmer, C., Tans, P. P. 2008: Sampling, storage, and analysis of C2-C7 non-methane hydrocarbons from the US National Oceanic and Atmospheric Administration Cooperative Air Sampling Network glass flasks. Journal of Chromatography A, 1188(2): 75-87. DOI: 10.1016/j.chroma.2008.02.059

Sakulyanontvittaya T., Duhl, T., Wiedinmyer, C., Detlev Helmig, Matsunaga, S., Potosnak, M., Milford, J., Guenther, A. 2008: Monoterpene and sesquiterpene emission estimates for the United States. Environmental Science and Technology, 42(5): 1623-1629. DOI: 10.1021/es702274e

Sakulyanontvittaya T., Guenther, A., Detlev Helmig, Milford, J., Wiedinmyer, C. 2008: Secondary organic aerosol from sesquiterpene and monoterpene emissions in the United States. Environmental Science and Technology, 42(23): 8784 8790. DOI: 10.1021/es800817r

Dibb, J. E., Albert, M., Anastasio, C., Atlas, E., Beyersdorf, A. J., Blake, N. J., Blake, D. R., Bocquet, F., Burkhart, J. F., Chen, G., Cohen, L., Conway, T. J., Courville, Z., Frey, M. M., Friel, D. K., Galbavy, E. S., Hall, S., Hastings, M. G., Detlev Helmig, Huey, L. G., Manuel A. Hutterli, M. A., Jarvis, J. C., Lefer, B. L., Meinardie, S., Neff, W., Oltmans, S. J., Rowland, F. S., Sjostedt, S. J., Steig, E. J., Swanson, A. L., Tanner, D. J. 2007: An overview of air-snow exchange at Summit, Greenland: Recent experiments and findings. Atmospheric Environment, 41(24): 4995-5006. DOI: 10.1016/j.atmosenv.2006.12.006

Detlev Helmig, Ortega, J., Duhl, T., Tanner, D., Guenther, A., Harley, P., Wiedinmyer, C., Milford, J., Sakulyanontvittaya, T. 2007: Sesquiterpene emissions from pine trees: Identifications, emission rates and flux estimates for the contiguous United States. Environmental Science and Technology, 41: 1545-1553.

Cohen, L., Detlev Helmig, Neff, W., Grachev, A., Fairall, C. W. 2007: Boundary-layer dynamics and its influence on atmospheric chemistry at Summit, Greenland. Atmospheric Environment, 41(24): 5044 5060.

Davis, D. D., Seelig, J., Huey, G., Crawford, J., Chen, G., Wang, Y., Buhr, M., Detlev Helmig, Neff, W., Blake, D., Arimoto, R., Eisele, F. 2007: A reassessment of Antarctic plateau reactive nitrogen based on ANTCI 2003 airborne and ground based measurements. Atmospheric Environment, 42(12): 2831-2848. DOI: 10.1016/j.atmosenv.2007.07.039

Fairall C. W., Detlev Helmig, Ganzeveld L., Hare J. 2007: Water-side turbulence enhancement of ozone deposition to the ocean. Atmospheric Chemistry and Physics, 7: 443 451.

Grannas, A. M., Jones, A. E., Dibb, J., Ammann, M., Anastasio, C., Beine, H. J., Bergin, M., Bottenheim, J., Boxe, C. S., Carver, G., Chen, G., Crawford, J. H., Domine, F., Frey, M. M., Guzman, M. I., Heard, D. E., Detlev Helmig, Hoffmann, M. R., Honrath, R. E., Huey, L. G., Hutterli, M., Jacobi, H. W., Klan, P., Lefer, B., McConnell, J., Plane, J., Sander, R., Savarino, J., Shepson, P. B., Simpson, W. R., Sodeau, J. R., von Glasow, R., Weller, R., Wolff, E. W., Zhu, T. 2007: An overview of snow photochemistry: Evidence, mechanisms and impacts. Atmospheric Chemistry and Physics, 7:4329 4373.

Detlev Helmig 2007: A WMO/GAW Expert Workshop on Global Long-Term Measurements of Volatile Organic Compounds (VOCs), Geneva, Switzerland, 30 January to 1 February 2006. World Meteorological Organization Global Atmosphere Watch Report No. 171. February 2007, WMO TD No. 1373.

Detlev Helmig, Bocquet, F., Cohen, L., Oltmans, S. J. 2007: Ozone uptake to the polar snowpack at Summit, Greenland. Atmospheric Environment, 41(24): 5061 5076.

Detlev Helmig, Ganzeveld, L., Butler, T., Oltmans, S. J. 2007: The role of ozone atmosphere-snow gas exchange on polar, boundary-layer tropospheric ozone: A review and sensitivity analysis. Atmospheric Chemistry and Physics, 7: 15 30.

Detlev Helmig, Oltmans, S. J., Carlson D., Lamarque, J-F., Jones, A., Labuschagne, C., Anlauf, K., Hayden, K. 2007: A review of surface ozone in the polar regions. Atmospheric Environment, 41(24): 5138 5161.