Zobrazeno 1 - 10
of 343
pro vyhledávání: '"J. Hueber"'
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 5439-5454 (2022)
Previous research on atmospheric chemistry in the forest environment has shown that the total reactivity from biogenic volatile organic compound (BVOC) emissions is not well considered in forest chemistry models. One possible explanation for this dis
Externí odkaz:
https://doaj.org/article/a5e7a66ff4584f28b867c8917c1e17d4
Autor:
H. Angot, C. Davel, C. Wiedinmyer, G. Pétron, J. Chopra, J. Hueber, B. Blanchard, I. Bourgeois, I. Vimont, S. A. Montzka, B. R. Miller, J. W. Elkins, D. Helmig
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 15153-15170 (2021)
Atmospheric non-methane hydrocarbons (NMHCs) play an important role in the formation of secondary organic aerosols and ozone. After a multidecadal global decline in atmospheric mole fractions of ethane and propane – the most abundant atmospheric NM
Externí odkaz:
https://doaj.org/article/f877504ad0844d7ab0e09ae3ea1e80c4
Autor:
H. Angot, K. McErlean, L. Hu, D. B. Millet, J. Hueber, K. Cui, J. Moss, C. Wielgasz, T. Milligan, D. Ketcherside, M. S. Bret-Harte, D. Helmig
Publikováno v:
Biogeosciences, Vol 17, Pp 6219-6236 (2020)
Rapid Arctic warming, a lengthening growing season, and the increasing abundance of biogenic volatile-organic-compound-emitting shrubs are all anticipated to increase atmospheric biogenic volatile organic compounds (BVOCs) in the Arctic atmosphere, w
Externí odkaz:
https://doaj.org/article/c18a6c740a514cec98f51ab1ffde42a7
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 11287-11304 (2020)
During the Program for Research on Oxidants: PHotochemistry, Emissions, and Transport (PROPHET) campaign from 21 July to 3 August 2016, field experiments on leaf-level trace gas exchange of nitric oxide (NO), nitrogen dioxide (NO2), and ozone (O3) we
Externí odkaz:
https://doaj.org/article/439f3998413e45f4b10aea69beb1b1f9
Publikováno v:
The Cryosphere, Vol 14, Pp 199-209 (2020)
The chemistry of reactive gases inside the snowpack and in the lower atmosphere was investigated at Concordia Station (Dome C), Antarctica, from December 2012 to January 2014. Measured species included ozone, nitrogen oxides, gaseous elemental mercur
Externí odkaz:
https://doaj.org/article/094a4c5c7f2c458ab001a894d13e1710
Publikováno v:
The Cryosphere, Vol 12, Pp 1939-1956 (2018)
In the Arctic, the snowpack forms the major interface between atmospheric and terrestrial cycling of mercury (Hg), a global pollutant. We investigated Hg dynamics in an interior Arctic tundra snowpack in northern Alaska during two winter seasons.
Externí odkaz:
https://doaj.org/article/03bada886b004f6395a3dd2e32b60fbd
Autor:
K. Dzepina, C. Mazzoleni, P. Fialho, S. China, B. Zhang, R. C. Owen, D. Helmig, J. Hueber, S. Kumar, J. A. Perlinger, L. J. Kramer, M. P. Dziobak, M. T. Ampadu, S. Olsen, D. J. Wuebbles, L. R. Mazzoleni
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 9, Pp 5047-5068 (2015)
Free tropospheric aerosol was sampled at the Pico Mountain Observatory located at 2225 m above mean sea level on Pico Island of the Azores archipelago in the North Atlantic. The observatory is located ~ 3900 km east and downwind of North America, whi
Externí odkaz:
https://doaj.org/article/54057f0dc349418d90528ad8629eb571
Autor:
D. Helmig, V. Petrenko, P. Martinerie, E. Witrant, T. Röckmann, A. Zuiderweg, R. Holzinger, J. Hueber, C. Thompson, J. W. C. White, W. Sturges, A. Baker, T. Blunier, D. Etheridge, M. Rubino, P. Tans
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 3, Pp 1463-1483 (2014)
The short-chain non-methane hydrocarbons (NMHC) are mostly emitted into the atmosphere by anthropogenic processes. Recent studies have pointed out a tight linkage between the atmospheric mole fractions of the NMHC ethane and the atmospheric growth ra
Externí odkaz:
https://doaj.org/article/cacfc0ce0e984923854b9a3a6148de46
Publikováno v:
Biogeosciences, Vol 10, Iss 6, Pp 3793-3807 (2013)
Gaseous elemental mercury (GEM) was monitored at the Niwot Ridge (NWT) Long-Term Ecological Research (LTER) site (Colorado, USA, 40° N) from interstitial air extracted from the snowpack at depths ranging from the snow surface to 10 cm above the soil
Externí odkaz:
https://doaj.org/article/059a654eab0b4b6caa5a611fa88b350e
Autor:
L. Hu, D. B. Millet, S. Y. Kim, K. C. Wells, T. J. Griffis, E. V. Fischer, D. Helmig, J. Hueber, A. J. Curtis
Publikováno v:
Atmospheric Chemistry and Physics, Vol 13, Iss 6, Pp 3379-3392 (2013)
We apply a full year of continuous atmospheric acetone measurements from the University of Minnesota tall tower Trace Gas Observatory (KCMP tall tower; 244 m a.g.l.), with a 0.5° × 0.667° GEOS-Chem nested grid simulation to develop quantitative ne
Externí odkaz:
https://doaj.org/article/db5f05758472491bb5c43ca4e7bf222f