Zobrazeno 1 - 10
of 357
pro vyhledávání: '"W. Elkins"'
Publikováno v:
Global Journal of Environmental Science and Management, Vol 3, Iss 4, Pp 437-446 (2017)
Newtown Creek is an industrial waterway and former tidal wetland in New York City. It is one of the most polluted water bodies in the United States and was designated as a superfund site in 2010. For over a century, organic compounds, heavy metals, a
Externí odkaz:
https://doaj.org/article/455a7c9db9894d94a9a85c078cbfddac
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:
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:
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
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 517-524 (2019)
We have explored a one-step method for gravimetric preparation of CO2-in-air standards in aluminum cylinders. We consider both adsorption to stainless steel surfaces used in the transfer of highly pure CO2 and adsorption of CO2 to cylinder walls. We
Externí odkaz:
https://doaj.org/article/24502052cdf447b3ada134f6ea96ce1f
Autor:
F. Kolonjari, D. A. Plummer, K. A. Walker, C. D. Boone, J. W. Elkins, M. I. Hegglin, G. L. Manney, F. L. Moore, D. Pendlebury, E. A. Ray, K. H. Rosenlof, G. P. Stiller
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 6801-6828 (2018)
Stratospheric transport in global circulation models and chemistry–climate models is an important component in simulating the recovery of the ozone layer as well as changes in the climate system. The Brewer–Dobson circulation is not well const
Externí odkaz:
https://doaj.org/article/a60367effec34991908a22d46849dd5a
Autor:
K. C. Wells, D. B. Millet, N. Bousserez, D. K. Henze, T. J. Griffis, S. Chaliyakunnel, E. J. Dlugokencky, E. Saikawa, G. Xiang, R. G. Prinn, S. O'Doherty, D. Young, R. F. Weiss, G. S. Dutton, J. W. Elkins, P. B. Krummel, R. Langenfelds, L. P. Steele
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 735-756 (2018)
We present top-down constraints on global monthly N2O emissions for 2011 from a multi-inversion approach and an ensemble of surface observations. The inversions employ the GEOS-Chem adjoint and an array of aggregation strategies to test how well c
Externí odkaz:
https://doaj.org/article/7b6df3c886924a1fa82ae76d06187e99
Autor:
M. A. Navarro, A. Saiz-Lopez, C. A. Cuevas, R. P. Fernandez, E. Atlas, X. Rodriguez-Lloveras, D. Kinnison, J.-F. Lamarque, S. Tilmes, T. Thornberry, A. Rollins, J. W. Elkins, E. J. Hintsa, F. L. Moore
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 9917-9930 (2017)
The stratospheric inorganic bromine (Bry) burden arising from the degradation of brominated very short-lived organic substances (VSLorg) and its partitioning between reactive and reservoir species is needed for a comprehensive assessment of the oz
Externí odkaz:
https://doaj.org/article/dc516cde676645199bdc8c8a3d8f737b