Zobrazeno 1 - 10
of 189
pro vyhledávání: '"B. B. Stephens"'
Autor:
C. D. Nevison, Q. Liang, P. A. Newman, B. B. Stephens, G. Dutton, X. Lan, R. Commane, Y. Gonzalez, E. Kort
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 10513-10529 (2024)
The literature presents different views on how the stratosphere influences variability in surface nitrous oxide (N2O) and on whether that influence is outweighed by surface emission changes driven by the El Niño–Southern Oscillation (ENSO). These
Externí odkaz:
https://doaj.org/article/5c9af8bb1d3042569a5d87beaf4ed122
Autor:
J. L. Laughner, G. C. Toon, J. Mendonca, C. Petri, S. Roche, D. Wunch, J.-F. Blavier, D. W. T. Griffith, P. Heikkinen, R. F. Keeling, M. Kiel, R. Kivi, C. M. Roehl, B. B. Stephens, B. C. Baier, H. Chen, Y. Choi, N. M. Deutscher, J. P. DiGangi, J. Gross, B. Herkommer, P. Jeseck, T. Laemmel, X. Lan, E. McGee, K. McKain, J. Miller, I. Morino, J. Notholt, H. Ohyama, D. F. Pollard, M. Rettinger, H. Riris, C. Rousogenous, M. K. Sha, K. Shiomi, K. Strong, R. Sussmann, Y. Té, V. A. Velazco, S. C. Wofsy, M. Zhou, P. O. Wennberg
Publikováno v:
Earth System Science Data, Vol 16, Pp 2197-2260 (2024)
The Total Carbon Column Observing Network (TCCON) measures column-average mole fractions of several greenhouse gases (GHGs), beginning in 2004, from over 30 current or past measurement sites around the world using solar absorption spectroscopy in the
Externí odkaz:
https://doaj.org/article/f7c8ac9c19f04402af11e5fe7712405c
Autor:
J. L. Laughner, S. Roche, M. Kiel, G. C. Toon, D. Wunch, B. C. Baier, S. Biraud, H. Chen, R. Kivi, T. Laemmel, K. McKain, P.-Y. Quéhé, C. Rousogenous, B. B. Stephens, K. Walker, P. O. Wennberg
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 1121-1146 (2023)
Optimal estimation retrievals of trace gas total columns require prior vertical profiles of the gases retrieved to drive the forward model and ensure the retrieval problem is mathematically well posed. For well-mixed gases, it is possible to derive a
Externí odkaz:
https://doaj.org/article/72250042be7741918eb2d1787b51066d
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:
B. B. Stephens, E. J. Morgan, J. D. Bent, R. F. Keeling, A. S. Watt, S. R. Shertz, B. C. Daube
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 2543-2574 (2021)
We have developed in situ and flask sampling systems for airborne measurements of variations in the O2/N2 ratio at the part per million level. We have deployed these instruments on a series of aircraft campaigns to measure the distribution of atmosph
Externí odkaz:
https://doaj.org/article/3b8f61937f5a4453a4d523af5d2d2dfd
Autor:
J. Liu, L. Baskaran, K. Bowman, D. Schimel, A. A. Bloom, N. C. Parazoo, T. Oda, D. Carroll, D. Menemenlis, J. Joiner, R. Commane, B. Daube, L. V. Gatti, K. McKain, J. Miller, B. B. Stephens, C. Sweeney, S. Wofsy
Publikováno v:
Earth System Science Data, Vol 13, Pp 299-330 (2021)
Here we present a global and regionally resolved terrestrial net biosphere exchange (NBE) dataset with corresponding uncertainties between 2010–2018: Carbon Monitoring System Flux Net Biosphere Exchange 2020 (CMS-Flux NBE 2020). It is estimated usi
Externí odkaz:
https://doaj.org/article/45537c016e0340b8af3b966af3ae45a6
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 217-238 (2021)
We introduce a transformed isentropic coordinate Mθe, defined as the dry air mass under a given equivalent potential temperature surface (θe) within a hemisphere. Like θe, the coordinate Mθe follows the synoptic distortions of the atmosphere but,
Externí odkaz:
https://doaj.org/article/159e2bb2d80f489fbf0e03ee00f0d9f6
Autor:
B. Birner, M. P. Chipperfield, E. J. Morgan, B. B. Stephens, M. Linz, W. Feng, C. Wilson, J. D. Bent, S. C. Wofsy, J. Severinghaus, R. F. Keeling
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 12391-12408 (2020)
Accurate simulation of atmospheric circulation, particularly in the lower stratosphere, is challenging due to unresolved wave–mean flow interactions and limited high-resolution observations for validation. Gravity-induced pressure gradients lead to
Externí odkaz:
https://doaj.org/article/fa0cb01ecfd74836934eef90a19db3bd
Autor:
E. Asher, R. S. Hornbrook, B. B. Stephens, D. Kinnison, E. J. Morgan, R. F. Keeling, E. L. Atlas, S. M. Schauffler, S. Tilmes, E. A. Kort, M. S. Hoecker-Martínez, M. C. Long, J.-F. Lamarque, A. Saiz-Lopez, K. McKain, C. Sweeney, A. J. Hills, E. C. Apel
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 14071-14090 (2019)
Fluxes of halogenated volatile organic compounds (VOCs) over the Southern Ocean remain poorly understood, and few atmospheric measurements exist to constrain modeled emissions of these compounds. We present observations of CHBr3, CH2Br2, CH3I, CHClBr
Externí odkaz:
https://doaj.org/article/92ac38210dc140f1bd4ab1764c75488c
Autor:
S. Crowell, D. Baker, A. Schuh, S. Basu, A. R. Jacobson, F. Chevallier, J. Liu, F. Deng, L. Feng, K. McKain, A. Chatterjee, J. B. Miller, B. B. Stephens, A. Eldering, D. Crisp, D. Schimel, R. Nassar, C. W. O'Dell, T. Oda, C. Sweeney, P. I. Palmer, D. B. A. Jones
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 9797-9831 (2019)
The Orbiting Carbon Observatory-2 has been on orbit since 2014, and its global coverage holds the potential to reveal new information about the carbon cycle through the use of top-down atmospheric inversion methods combined with column average CO2 re
Externí odkaz:
https://doaj.org/article/2a2009db44ed40e6bf6fa8c0121fe23e