Zobrazeno 1 - 10
of 168
pro vyhledávání: '"J. X. Sheng"'
Autor:
S. Baray, D. J. Jacob, J. D. Maasakkers, J.-X. Sheng, M. P. Sulprizio, D. B. A. Jones, A. A. Bloom, R. McLaren
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 18101-18121 (2021)
Methane emissions in Canada have both anthropogenic and natural sources. Anthropogenic emissions are estimated to be 4.1 Tg a−1 from 2010–2015 in the National Inventory Report submitted to the United Nation's Framework Convention on Climate Chang
Externí odkaz:
https://doaj.org/article/efcb0b684deb4eba8d0925efb5892c7e
Autor:
Y. Zhang, D. J. Jacob, X. Lu, J. D. Maasakkers, T. R. Scarpelli, J.-X. Sheng, L. Shen, Z. Qu, M. P. Sulprizio, J. Chang, A. A. Bloom, S. Ma, J. Worden, R. J. Parker, H. Boesch
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 3643-3666 (2021)
We conduct a global inverse analysis of 2010–2018 GOSAT observations to better understand the factors controlling atmospheric methane and its accelerating increase over the 2010–2018 period. The inversion optimizes anthropogenic methane emissions
Externí odkaz:
https://doaj.org/article/406a0eb9e027455ea806447183e73b0e
Autor:
T. R. Scarpelli, D. J. Jacob, J. D. Maasakkers, M. P. Sulprizio, J.-X. Sheng, K. Rose, L. Romeo, J. R. Worden, G. Janssens-Maenhout
Publikováno v:
Earth System Science Data, Vol 12, Pp 563-575 (2020)
Individual countries report national emissions of methane, a potent greenhouse gas, in accordance with the United Nations Framework Convention on Climate Change (UNFCCC). We present a global inventory of methane emissions from oil, gas, and coal expl
Externí odkaz:
https://doaj.org/article/c95ab563183a42ce98d962fe5b75119e
Autor:
J. D. Maasakkers, D. J. Jacob, M. P. Sulprizio, T. R. Scarpelli, H. Nesser, J.-X. Sheng, Y. Zhang, M. Hersher, A. A. Bloom, K. W. Bowman, J. R. Worden, G. Janssens-Maenhout, R. J. Parker
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 7859-7881 (2019)
We use 2010–2015 observations of atmospheric methane columns from the GOSAT satellite instrument in a global inverse analysis to improve estimates of methane emissions and their trends over the period, as well as the global concentration of troposp
Externí odkaz:
https://doaj.org/article/d2d4409c71654c2baf9295423e5de29b
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 6379-6388 (2018)
We conduct Observing System Simulation Experiments (OSSEs) to compare the ability of future satellite measurements of atmospheric methane columns (TROPOMI, GeoCARB, GEO-CAPE) for constraining methane emissions down to the 25 km scale through inv
Externí odkaz:
https://doaj.org/article/0ce7b8f5f8ff4766b5bd33899b22a3d1
Autor:
D. H. Cusworth, D. J. Jacob, J.-X. Sheng, J. Benmergui, A. J. Turner, J. Brandman, L. White, C. A. Randles
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 16885-16896 (2018)
Methane emissions from oil/gas fields originate from a large number of relatively small and densely clustered point sources. A small fraction of high-mode emitters can make a large contribution to the total methane emission. Here we conduct observati
Externí odkaz:
https://doaj.org/article/94efa2f1a6a94e7c81c1c90247702486
Monitoring global tropospheric OH concentrations using satellite observations of atmospheric methane
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 15959-15973 (2018)
The hydroxyl radical (OH) is the main tropospheric oxidant and the main sink for atmospheric methane. The global abundance of OH has been monitored for the past decades using atmospheric methyl chloroform (CH3CCl3) as a proxy. This method is becom
Externí odkaz:
https://doaj.org/article/77510e7888e44add9d3768a1e13373a3
Autor:
J.-X. Sheng, D. J. Jacob, A. J. Turner, J. D. Maasakkers, J. Benmergui, A. A. Bloom, C. Arndt, R. Gautam, D. Zavala-Araiza, H. Boesch, R. J. Parker
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 12257-12267 (2018)
We use 7 years (2010–2016) of methane column observations from the Greenhouse Gases Observing Satellite (GOSAT) to examine trends in atmospheric methane concentrations over North America and infer trends in emissions. Local methane enhancements
Externí odkaz:
https://doaj.org/article/ef819e73934d471fb6d5ec050b0073d4
Autor:
T. Sukhodolov, J.-X. Sheng, A. Feinberg, B.-P. Luo, T. Peter, L. Revell, A. Stenke, D. K. Weisenstein, E. Rozanov
Publikováno v:
Geoscientific Model Development, Vol 11, Pp 2633-2647 (2018)
We evaluate how the coupled aerosol–chemistry–climate model SOCOL-AERv1.0 represents the influence of the 1991 eruption of Mt. Pinatubo on stratospheric aerosol properties and atmospheric state. The aerosol module is coupled to the radiative a
Externí odkaz:
https://doaj.org/article/97866b5f05904eefa803070b5120e113
Autor:
J.-X. Sheng, D. J. Jacob, A. J. Turner, J. D. Maasakkers, M. P. Sulprizio, A. A. Bloom, A. E. Andrews, D. Wunch
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 6483-6491 (2018)
We use observations of boundary layer methane from the SEAC4RS aircraft campaign over the Southeast US in August–September 2013 to estimate methane emissions in that region through an inverse analysis with up to 0.25° × 0.3125° (25×25 km2)
Externí odkaz:
https://doaj.org/article/3d1bc394a90346a1ad7f9b79093e7a53