Zobrazeno 1 - 10
of 32
pro vyhledávání: '"B. M. Knudsen"'
Autor:
T. Christensen, B. M. Knudsen, J.-P. Pommereau, G. Letrenne, A. Hertzog, F. Vial, J. Ovarlez, M. Piot
Publikováno v:
Atmospheric Chemistry and Physics, Vol 7, Iss 13, Pp 3399-3409 (2007)
The temperature and wind of the ECMWF ERA-40 reanalysis in the tropical lower stratosphere during the period 1988–2001 has been evaluated by comparison with independent in situ measurements of 21 IR Montgolfier and superpressure long-duration ballo
Externí odkaz:
https://doaj.org/article/bdc189bf420546c2a6d61bcf0f045707
Autor:
S. B. Andersen, B. M. Knudsen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 6, Iss 10, Pp 2837-2845 (2006)
Reverse domain-filling trajectory calculations have been performed for the years 1993, 1995, 1996, 1997, and 2000 to calculate the spreading of ozone depleted air from the polar vortex to midlatitudes in spring. We find that for these years with mass
Externí odkaz:
https://doaj.org/article/cc01fef5f62e480bb5c0e75bb35c7129
Publikováno v:
Atmospheric Chemistry and Physics, Vol 6, Iss 12, Pp 5391-5397 (2006)
Eight super-pressure balloons floating at constant level between 50 and 80 hPa and three Infra-Red Montgolfier balloons of variable altitude (15 hPa daytime, 40–80 hPa night time) have been launched at 22° S from Brazil in February–May 2004 in t
Externí odkaz:
https://doaj.org/article/bdfc0eee966741a08978d4381eaa5a23
Publikováno v:
Atmospheric Chemistry and Physics, Vol 5, Iss 11, Pp 2981-2987 (2005)
The erythemally weighted (UV) irradiance below the severely depleted Arctic vortices in spring 1996 and 1997 were substantially elevated. On average the UV increased 36 and 33% relative to the 1979-1981 mean assuming clear skies from day 80-100 in 19
Externí odkaz:
https://doaj.org/article/30fc3fa94a2c4e008f253c1fd8679d91
Autor:
T. Christensen, B. M. Knudsen, M. Streibel, S. B. Andersen, A. Benesova, G. Braathen, H. Claude, J. Davies, H. De Backer, H. Dier, V. Dorokhov, M. Gerding, M. Gil, B. Henchoz, H. Kelder, R. Kivi, E. Kyrö, Z. Litynska, D. Moore, G. Peters, P. Skrivankova, R. Stübi, T. Turunen, G. Vaughan, P. Viatte, A. F. Vik, P. von der Gathen, I. Zaitcev
Publikováno v:
Atmospheric Chemistry and Physics, Vol 5, Iss 1, Pp 131-138 (2005)
A total ozone depletion of 68±7 Dobson units between 380 and 525K from 10 December 2002 to 10 March 2003 is derived from ozone sonde data by the vortex-average method, taking into account both diabatic descent of the air masses and transport of air
Externí odkaz:
https://doaj.org/article/395b37b1bc0a4ac4a101c5b8c57453ad
Autor:
B. M. Knudsen, N. R. P. Harris, S. B. Andersen, B. Christiansen, N. Larsen, M. Rex, B. Naujokat
Publikováno v:
Atmospheric Chemistry and Physics, Vol 4, Iss 7, Pp 1849-1856 (2004)
Future increases in the concentration of greenhouse gases and water vapour may cool the stratosphere further and increase the amount of polar stratospheric clouds (PSCs). Future Arctic PSC areas have been extrapolated from the highly significant tren
Externí odkaz:
https://doaj.org/article/ce5cde6ad17e45c4b7aa3bdfa0101380
Autor:
N. Larsen, B. M. Knudsen, S. H. Svendsen, T. Deshler, J. M. Rosen, R. Kivi, C. Weisser, J. Schreiner, K. Mauerberger, F. Cairo, J. Ovarlez, H. Oelhaf, R. Spang
Publikováno v:
Atmospheric Chemistry and Physics, Vol 4, Iss 7, Pp 2001-2013 (2004)
Polar stratospheric clouds (PSC) have been observed in early winter (December 2002) during the SOLVE II/Vintersol campaign, both from balloons carrying comprehensive instrumentation for measurements of chemical composition, size distributions, and op
Externí odkaz:
https://doaj.org/article/dcee936b56994c3ea65dcd42d3b91d01
Autor:
B. M. Knudsen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 3, Iss 5, Pp 1759-1768 (2003)
The accuracy of ECMWF (European Centre for Medium-Range Weather Forecasts) temperatures has been investigated by comparison to radiosonde temperatures. Particularly, the extent of temperatures below which Polar Stratospheric Clouds (PSCs) consisting
Externí odkaz:
https://doaj.org/article/446721b19e0c4829ad1de71eeb779afc
Autor:
François Vial, M. Piot, Joëlle Ovarlez, Albert Hertzog, B. M. Knudsen, T. Christensen, G. Letrenne, Jean-Pierre Pommereau
Publikováno v:
Atmospheric Chemistry and Physics, Vol 7, Iss 13, Pp 3399-3409 (2007)
Atmospheric Chemistry and Physics Discussions
Atmospheric Chemistry and Physics Discussions, 2007, 7 (2), pp.3423-3450
Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics, European Geosciences Union, 2007, 7 (13), pp.3409
Atmospheric Chemistry and Physics, 2007, 7 (13), pp.3409. ⟨10.5194/acp-7-3399-2007⟩
Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2007, 7 (2), pp.3423-3450
Atmospheric Chemistry and Physics Discussions
Atmospheric Chemistry and Physics Discussions, 2007, 7 (2), pp.3423-3450
Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics, European Geosciences Union, 2007, 7 (13), pp.3409
Atmospheric Chemistry and Physics, 2007, 7 (13), pp.3409. ⟨10.5194/acp-7-3399-2007⟩
Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2007, 7 (2), pp.3423-3450
The temperature and wind of the ECMWF ERA-40 reanalysis in the tropical lower stratosphere during the period 1988–2001 has been evaluated by comparison with independent in situ measurements of 21 IR Montgolfier and superpressure long-duration ballo
Autor:
Jonathan Davies, Hennie Kelder, René Stübi, Michael Gerding, P. Viatte, Signe B. Andersen, A. F. Vik, H. De Backer, P. von der Gathen, Geraint Vaughan, David J. Moore, Esko Kyrö, M. Streibel, I. Zaitcev, B. Henchoz, T. Christensen, Geir O. Braathen, Rigel Kivi, Z. Litynska, A. Benesova, Hans Claude, G. Peters, H. Dier, T. Turunen, Valery Dorokhov, P. Skrivankova, B. M. Knudsen, Manuel Gil
Publikováno v:
Atmospheric Chemistry and Physics Discussions
Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2004, 4 (5), pp.6667-6689
ResearcherID
Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics, European Geosciences Union, 2005, 5 (1), pp.131-138
Atmospheric Chemistry and Physics, Vol 5, Iss 1, Pp 131-138 (2005)
Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2004, 4 (5), pp.6667-6689
ResearcherID
Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics, European Geosciences Union, 2005, 5 (1), pp.131-138
Atmospheric Chemistry and Physics, Vol 5, Iss 1, Pp 131-138 (2005)
A total ozone depletion of 68±7 Dobson units between 380 and 525K from 10 December 2002 to 10 March 2003 is derived from ozone sonde data by the vortex-average method, taking into account both diabatic descent of the air masses and transport of air