Zobrazeno 1 - 10
of 181
pro vyhledávání: '"H. B. SINGH"'
Autor:
X. Chen, D. B. Millet, H. B. Singh, A. Wisthaler, E. C. Apel, E. L. Atlas, D. R. Blake, I. Bourgeois, S. S. Brown, J. D. Crounse, J. A. de Gouw, F. M. Flocke, A. Fried, B. G. Heikes, R. S. Hornbrook, T. Mikoviny, K.-E. Min, M. Müller, J. A. Neuman, D. W. O'Sullivan, J. Peischl, G. G. Pfister, D. Richter, J. M. Roberts, T. B. Ryerson, S. R. Shertz, C. R. Thompson, V. Treadaway, P. R. Veres, J. Walega, C. Warneke, R. A. Washenfelder, P. Weibring, B. Yuan
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 9097-9123 (2019)
We apply a high-resolution chemical transport model (GEOS-Chem CTM) with updated treatment of volatile organic compounds (VOCs) and a comprehensive suite of airborne datasets over North America to (i) characterize the VOC budget and (ii) test the abi
Externí odkaz:
https://doaj.org/article/92ebc82aebd14abc997b4b33ab4695fc
Autor:
J. Li, J. Mao, A. M. Fiore, R. C. Cohen, J. D. Crounse, A. P. Teng, P. O. Wennberg, B. H. Lee, F. D. Lopez-Hilfiker, J. A. Thornton, J. Peischl, I. B. Pollack, T. B. Ryerson, P. Veres, J. M. Roberts, J. A. Neuman, J. B. Nowak, G. M. Wolfe, T. F. Hanisco, A. Fried, H. B. Singh, J. Dibb, F. Paulot, L. W. Horowitz
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 2341-2361 (2018)
Widespread efforts to abate ozone (O3) smog have significantly reduced emissions of nitrogen oxides (NOx) over the past 2 decades in the Southeast US, a place heavily influenced by both anthropogenic and biogenic emissions. How reactive nitrogen s
Externí odkaz:
https://doaj.org/article/cde22b7aba554f32a6b668804910e3e8
Autor:
Neha CHATTERJEE, Deepranjan SARKAR, Ardit SANKAR, Sumita PAL, H. B. SINGH, Rajesh Kumar SINGH, J. S. BOHRA, Amitava RAKSHIT
Publikováno v:
Acta Agriculturae Slovenica, Vol 111, Iss 3 (2018)
Priming techniques are gaining importance in agriculture with the increase in environmental stresses. Resource-poor farmers are in urgent need of such techniques as they are simple, economical, and value-added intervention associated with low-risk be
Externí odkaz:
https://doaj.org/article/1e9fde5a72ca47b79e0e9db176b9256c
Autor:
K. C. Wells, D. B. Millet, K. E. Cady-Pereira, M. W. Shephard, D. K. Henze, N. Bousserez, E. C. Apel, J. de Gouw, C. Warneke, H. B. Singh
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 5, Pp 2555-2570 (2014)
We employ new global space-based measurements of atmospheric methanol from the Tropospheric Emission Spectrometer (TES) with the adjoint of the GEOS-Chem chemical transport model to quantify terrestrial emissions of methanol to the atmosphere. Biogen
Externí odkaz:
https://doaj.org/article/3798c055e2284bc6ae9f4a9585b3506f
Autor:
E. V. Fischer, D. J. Jacob, R. M. Yantosca, M. P. Sulprizio, D. B. Millet, J. Mao, F. Paulot, H. B. Singh, A. Roiger, L. Ries, R.W. Talbot, K. Dzepina, S. Pandey Deolal
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 5, Pp 2679-2698 (2014)
Peroxyacetyl nitrate (PAN) formed in the atmospheric oxidation of non-methane volatile organic compounds (NMVOCs) is the principal tropospheric reservoir for nitrogen oxide radicals (NOx = NO + NO2). PAN enables the transport and release of NOx to th
Externí odkaz:
https://doaj.org/article/ec7cc49838304f85bfe6cbace3bf5f0e
Autor:
J. H. Crawford, J. R. Olson, E. Kosciuch, R. S. Hornbrook, R. L. Mauldin III, C. A. Cantrell, W. H. Brune, J. Mao, X. Ren, G. Chen, H. B. Singh
Publikováno v:
Atmospheric Measurement Techniques, Vol 5, Iss 8, Pp 2025-2037 (2012)
The hydroxyl (OH) and hydroperoxyl (HO2) radicals, collectively called HOx, play central roles in tropospheric chemistry. Accurate measurements of OH and HO2 are critical to examine our understanding of atmospheric chemistry. Intercomparisons of diff
Externí odkaz:
https://doaj.org/article/9ebec36aeb4047049b515b6ec7e5ba40
Autor:
K. C. Wells, D. B. Millet, L. Hu, K. E. Cady-Pereira, Y. Xiao, M. W. Shephard, C. L. Clerbaux, L. Clarisse, P.-F. Coheur, E. C. Apel, J. de Gouw, C. Warneke, H. B. Singh, A. H. Goldstein, B. C. Sive
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 13, Pp 5897-5912 (2012)
Methanol retrievals from nadir-viewing space-based sensors offer powerful new information for quantifying methanol emissions on a global scale. Here we apply an ensemble of aircraft observations over North America to evaluate new methanol measurement
Externí odkaz:
https://doaj.org/article/d7024b8a70d94d608c45bdb6d8bac346
Autor:
A. Fried, C. Cantrell, J. Olson, J. H. Crawford, P. Weibring, J. Walega, D. Richter, W. Junkermann, R. Volkamer, R. Sinreich, B. G. Heikes, D. O'Sullivan, D. R. Blake, N. Blake, S. Meinardi, E. Apel, A. Weinheimer, D. Knapp, A. Perring, R. C. Cohen, H. Fuelberg, R. E. Shetter, S. R. Hall, K. Ullmann, W. H. Brune, J. Mao, X. Ren, L. G. Huey, H. B. Singh, J. W. Hair, D. Riemer, G. Diskin, G. Sachse
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 22, Pp 11867-11894 (2011)
Detailed comparisons of airborne CH2O measurements acquired by tunable diode laser absorption spectroscopy with steady state box model calculations were carried out using data from the 2006 INTEX-B and MILARGO campaign in order to improve our underst
Externí odkaz:
https://doaj.org/article/ff63bbeb5fa0467d84ff4c4f3cb9fdd8
Autor:
H. B. Singh, H. Fuelberg, G. Diskin, N. J. Blake, D. R. Blake, P. J. Wooldridge, J. Dibb, D. K. Farmer, T. H. Bertram, A. E. Perring, G. Sachse, R. C. Cohen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 10, Iss 15, Pp 7215-7229 (2010)
Alkyl and multifunctional nitrates (RONO2, ΣANs) have been observed to be a significant fraction of NOy in a number of different chemical regimes. Their formation is an important free radical chain termination step ending production of ozone and pos
Externí odkaz:
https://doaj.org/article/eaf772436b244e11b73794451ee2a04a
Autor:
D. J. Jacob, J. H. Crawford, H. Maring, A. D. Clarke, J. E. Dibb, L. K. Emmons, R. A. Ferrare, C. A. Hostetler, P. B. Russell, H. B. Singh, A. M. Thompson, G. E. Shaw, E. McCauley, J. R. Pederson, J. A. Fisher
Publikováno v:
Atmospheric Chemistry and Physics, Vol 10, Iss 11, Pp 5191-5212 (2010)
The NASA Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) mission was conducted in two 3-week deployments based in Alaska (April 2008) and western Canada (June–July 2008). Its goal was to better understand
Externí odkaz:
https://doaj.org/article/a3c3b5ade66c4f948656a48404cefa6a