Zobrazeno 1 - 10
of 113
pro vyhledávání: '"J A, Elkins"'
Autor:
E. A. Ray, F. L. Moore, H. Garny, E. J. Hintsa, B. D. Hall, G. S. Dutton, D. Nance, J. W. Elkins, S. C. Wofsy, J. Pittman, B. Daube, B. C. Baier, J. Li, C. Sweeney
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 12425-12445 (2024)
The age of air is an important transport diagnostic that can be derived from trace gas measurements and compared to global chemistry climate model output. We describe a new technique to calculate the age of air, measuring transport times from the Ear
Externí odkaz:
https://doaj.org/article/492ebc4047ef467b9e947c4343ed6ff6
Autor:
H. Guo, C. M. Flynn, M. J. Prather, S. A. Strode, S. D. Steenrod, L. Emmons, F. Lacey, J.-F. Lamarque, A. M. Fiore, G. Correa, L. T. Murray, G. M. Wolfe, J. M. St. Clair, M. Kim, J. Crounse, G. Diskin, J. DiGangi, B. C. Daube, R. Commane, K. McKain, J. Peischl, T. B. Ryerson, C. Thompson, T. F. Hanisco, D. Blake, N. J. Blake, E. C. Apel, R. S. Hornbrook, J. W. Elkins, E. J. Hintsa, F. L. Moore, S. C. Wofsy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 99-117 (2023)
The NASA Atmospheric Tomography (ATom) mission built a photochemical climatology of air parcels based on in situ measurements with the NASA DC-8 aircraft along objectively planned profiling transects through the middle of the Pacific and Atlantic oce
Externí odkaz:
https://doaj.org/article/99b21b9190d945c2b0745c450081f986
Autor:
V. H. Payne, S. S. Kulawik, E. V. Fischer, J. F. Brewer, L. G. Huey, K. Miyazaki, J. R. Worden, K. W. Bowman, E. J. Hintsa, F. Moore, J. W. Elkins, J. Juncosa Calahorrano
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 3497-3511 (2022)
We present an overview of an optimal estimation algorithm to retrieve peroxyacetyl nitrate (PAN) from single-field-of-view Level 1B radiances measured by the Cross-Track Infrared Sounder (CrIS). CrIS PAN retrievals show peak sensitivity in the mid-tr
Externí odkaz:
https://doaj.org/article/7c19bb2dea1d41e68106c9d3ce887578
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:
E. J. Hintsa, F. L. Moore, D. F. Hurst, G. S. Dutton, B. D. Hall, J. D. Nance, B. R. Miller, S. A. Montzka, L. P. Wolton, A. McClure-Begley, J. W. Elkins, E. G. Hall, A. F. Jordan, A. W. Rollins, T. D. Thornberry, L. A. Watts, C. R. Thompson, J. Peischl, I. Bourgeois, T. B. Ryerson, B. C. Daube, Y. Gonzalez Ramos, R. Commane, G. W. Santoni, J. V. Pittman, S. C. Wofsy, E. Kort, G. S. Diskin, T. P. Bui
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 6795-6819 (2021)
UCATS (the UAS Chromatograph for Atmospheric Trace Species) was designed and built for observations of important atmospheric trace gases from unmanned aircraft systems (UAS) in the upper troposphere and lower stratosphere (UTLS). Initially it measure
Externí odkaz:
https://doaj.org/article/ea54a7067c54404eb8238303c92afb8f
Autor:
H. Guo, C. M. Flynn, M. J. Prather, S. A. Strode, S. D. Steenrod, L. Emmons, F. Lacey, J.-F. Lamarque, A. M. Fiore, G. Correa, L. T. Murray, G. M. Wolfe, J. M. St. Clair, M. Kim, J. Crounse, G. Diskin, J. DiGangi, B. C. Daube, R. Commane, K. McKain, J. Peischl, T. B. Ryerson, C. Thompson, T. F. Hanisco, D. Blake, N. J. Blake, E. C. Apel, R. S. Hornbrook, J. W. Elkins, E. J. Hintsa, F. L. Moore, S. Wofsy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 13729-13746 (2021)
The NASA Atmospheric Tomography (ATom) mission built a photochemical climatology of air parcels based on in situ measurements with the NASA DC-8 aircraft along objectively planned profiling transects through the middle of the Pacific and Atlantic oce
Externí odkaz:
https://doaj.org/article/f8a2f1e39f7d4821a649238a97b0c0ff
Autor:
Y. Gonzalez, R. Commane, E. Manninen, B. C. Daube, L. D. Schiferl, J. B. McManus, K. McKain, E. J. Hintsa, J. W. Elkins, S. A. Montzka, C. Sweeney, F. Moore, J. L. Jimenez, P. Campuzano Jost, T. B. Ryerson, I. Bourgeois, J. Peischl, C. R. Thompson, E. Ray, P. O. Wennberg, J. Crounse, M. Kim, H. M. Allen, P. A. Newman, B. B. Stephens, E. C. Apel, R. S. Hornbrook, B. A. Nault, E. Morgan, S. C. Wofsy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 11113-11132 (2021)
We measured the global distribution of tropospheric N2O mixing ratios during the NASA airborne Atmospheric Tomography (ATom) mission. ATom measured concentrations of ∼ 300 gas species and aerosol properties in 647 vertical profiles spanning the Pac
Externí odkaz:
https://doaj.org/article/31481aace19749b9945229df648b2b2a
Autor:
I. Bourgeois, J. Peischl, C. R. Thompson, K. C. Aikin, T. Campos, H. Clark, R. Commane, B. Daube, G. W. Diskin, J. W. Elkins, R.-S. Gao, A. Gaudel, E. J. Hintsa, B. J. Johnson, R. Kivi, K. McKain, F. L. Moore, D. D. Parrish, R. Querel, E. Ray, R. Sánchez, C. Sweeney, D. W. Tarasick, A. M. Thompson, V. Thouret, J. C. Witte, S. C. Wofsy, T. B. Ryerson
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 10611-10635 (2020)
Ozone is a key constituent of the troposphere, where it drives photochemical processes, impacts air quality, and acts as a climate forcer. Large-scale in situ observations of ozone commensurate with the grid resolution of current Earth system models
Externí odkaz:
https://doaj.org/article/e8cdef94390d4ddfa0947f719bf68eb6
Autor:
K. R. Travis, C. L. Heald, H. M. Allen, E. C. Apel, S. R. Arnold, D. R. Blake, W. H. Brune, X. Chen, R. Commane, J. D. Crounse, B. C. Daube, G. S. Diskin, J. W. Elkins, M. J. Evans, S. R. Hall, E. J. Hintsa, R. S. Hornbrook, P. S. Kasibhatla, M. J. Kim, G. Luo, K. McKain, D. B. Millet, F. L. Moore, J. Peischl, T. B. Ryerson, T. Sherwen, A. B. Thames, K. Ullmann, X. Wang, P. O. Wennberg, G. M. Wolfe, F. Yu
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 7753-7781 (2020)
The global oxidation capacity, defined as the tropospheric mean concentration of the hydroxyl radical (OH), controls the lifetime of reactive trace gases in the atmosphere such as methane and carbon monoxide (CO). Models tend to underestimate the met
Externí odkaz:
https://doaj.org/article/d481fda9e1204e94ad9316691357c891
Autor:
A. B. Thames, W. H. Brune, D. O. Miller, H. M. Allen, E. C. Apel, D. R. Blake, T. P. Bui, R. Commane, J. D. Crounse, B. C. Daube, G. S. Diskin, J. P. DiGangi, J. W. Elkins, S. R. Hall, T. F. Hanisco, R. A. Hannun, E. Hintsa, R. S. Hornbrook, M. J. Kim, K. McKain, F. L. Moore, J. M. Nicely, J. Peischl, T. B. Ryerson, J. M. St. Clair, C. Sweeney, A. Teng, C. R. Thompson, K. Ullmann, P. O. Wennberg, G. M. Wolfe
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 4013-4029 (2020)
The hydroxyl radical (OH) reacts with thousands of chemical species in the atmosphere, initiating their removal and the chemical reaction sequences that produce ozone, secondary aerosols, and gas-phase acids. OH reactivity, which is the inverse of OH
Externí odkaz:
https://doaj.org/article/c7b39ea8c6ad442ab137ec45a9f1a1a3