Zobrazeno 1 - 10
of 249
pro vyhledávání: '"B J Johnson"'
Autor:
A. Keppens, S. Di Pede, D. Hubert, J.-C. Lambert, P. Veefkind, M. Sneep, J. De Haan, M. ter Linden, T. Leblanc, S. Compernolle, T. Verhoelst, J. Granville, O. Nath, A. M. Fjæraa, I. Boyd, S. Niemeijer, R. Van Malderen, H. G. J. Smit, V. Duflot, S. Godin-Beekmann, B. J. Johnson, W. Steinbrecht, D. W. Tarasick, D. E. Kollonige, R. M. Stauffer, A. M. Thompson, A. Dehn, C. Zehner
Publikováno v:
Atmospheric Measurement Techniques, Vol 17, Pp 3969-3993 (2024)
The Sentinel-5 Precursor (S5P) satellite operated by the European Space Agency has carried the TROPOspheric Monitoring Instrument (TROPOMI) on a Sun-synchronous low-Earth orbit since 13 October 2017. The S5P mission has acquired more than 5 years of
Externí odkaz:
https://doaj.org/article/218218c251c342fa9984d6eeb6a6f168
Autor:
R. M. Stauffer, A. M. Thompson, D. E. Kollonige, N. Komala, H. K. Al-Ghazali, D. Y. Risdianto, A. Dindang, A. Fairudz bin Jamaluddin, M. K. Sammathuria, N. B. Zakaria, B. J. Johnson, P. D. Cullis
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 5221-5234 (2024)
Positive trends in tropical free-tropospheric (FT) ozone are frequently ascribed to emissions growth, but less is known about the effects of changing dynamics. Extending a prior study (Thompson et al., 2021; https://doi.org/10.1029/2021JD034691; “T
Externí odkaz:
https://doaj.org/article/9c26c81b256c49829739b475e3d65f96
Autor:
H. G. J. Smit, D. Poyraz, R. Van Malderen, A. M. Thompson, D. W. Tarasick, R. M. Stauffer, B. J. Johnson, D. E. Kollonige
Publikováno v:
Atmospheric Measurement Techniques, Vol 17, Pp 73-112 (2024)
Although in principle ECC (electrochemical concentration cell) ozonesondes are absolute measuring devices, in practice they have several “artefacts” which change over the course of a flight. Most of the artefacts have been corrected in the recomm
Externí odkaz:
https://doaj.org/article/58e0f108865e4985930472c6828bd007
Autor:
V. Fioletov, X. Zhao, I. Abboud, M. Brohart, A. Ogyu, R. Sit, S. C. Lee, I. Petropavlovskikh, K. Miyagawa, B. J. Johnson, P. Cullis, J. Booth, G. McConville, C. T. McElroy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 12731-12751 (2023)
The Antarctic polar vortex creates unique chemical and dynamical conditions when the stratospheric air over Antarctica is isolated from the rest of the stratosphere. As a result, stratospheric ozone within the vortex remains largely unchanged for a 5
Externí odkaz:
https://doaj.org/article/13a7665b606b4940a7fe7c1da4cb7bc4
Autor:
B. J. Johnson, P. Cullis, J. Booth, I. Petropavlovskikh, G. McConville, B. Hassler, G. A. Morris, C. Sterling, S. Oltmans
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 3133-3146 (2023)
Balloon-borne ozonesondes launched weekly from South Pole Station (1986–2021) measure high-vertical-resolution profiles of ozone and temperature from the surface to 30–35 km altitude. The launch frequency is increased in late winter before the on
Externí odkaz:
https://doaj.org/article/62a88dc9d9044967965e7a43b7190ac5
Autor:
D. Hubert, K.-P. Heue, J.-C. Lambert, T. Verhoelst, M. Allaart, S. Compernolle, P. D. Cullis, A. Dehn, C. Félix, B. J. Johnson, A. Keppens, D. E. Kollonige, C. Lerot, D. Loyola, M. Maata, S. Mitro, M. Mohamad, A. Piters, F. Romahn, H. B. Selkirk, F. R. da Silva, R. M. Stauffer, A. M. Thompson, J. P. Veefkind, H. Vömel, J. C. Witte, C. Zehner
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 7405-7433 (2021)
Ozone in the troposphere affects humans and ecosystems as a pollutant and as a greenhouse gas. Observing, understanding and modelling this dual role, as well as monitoring effects of international regulations on air quality and climate change, howeve
Externí odkaz:
https://doaj.org/article/8b36420f14684dbbb7cb4fe2cac50185
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
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 1853-1865 (2019)
We quantify ozone variability in the upper troposphere and lower stratosphere (UTLS) by investigating lamination features in balloon measurements of ozone mixing ratio and potential temperature. Laminae are defined as stratified variations in ozone t
Externí odkaz:
https://doaj.org/article/526a181723c44c0490b669acef901e97
Autor:
E. Leventidou, M. Weber, K.-U. Eichmann, J. P. Burrows, K.-P. Heue, A. M. Thompson, B. J. Johnson
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 9189-9205 (2018)
Using a convective-cloud differential (CCD) method, developed in-house and applied to retrievals of total ozone and cloud data from three European satellite instruments (viz. GOME/ERS-2, 1995–2003; SCIAMACHY/Envisat, 2002–2012 and GOME-2/MetOp-
Externí odkaz:
https://doaj.org/article/647f3c3cfac14097b1a3aed89352aea3
Autor:
C. W. Sterling, B. J. Johnson, S. J. Oltmans, H. G. J. Smit, A. F. Jordan, P. D. Cullis, E. G. Hall, A. M. Thompson, J. C. Witte
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 3661-3687 (2018)
NOAA's program of long-term monitoring of the vertical distribution of ozone with electrochemical concentration cell (ECC) ozonesondes has undergone a number of changes over the 50-year record. In order to produce a homogenous data set, these chan
Externí odkaz:
https://doaj.org/article/e9956f3ac95943dabaa931d53f924db3