Validation of the Diurnal Cycles in Atmospheric Reanalyses Over Antarctic Sea Ice
The diurnal cycles of near-surface meteorological parameters over Antarctic sea ice in six widely used atmospheric reanalyses are validated against observations from Ice Station Weddell. The station drifted from February through May 1992 and provided the most extensive set of meteorological observat...
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ftunisfloridatam:oai:digitalcommons.usf.edu:msc_facpub-2464 2023-05-15T14:04:11+02:00 Validation of the Diurnal Cycles in Atmospheric Reanalyses Over Antarctic Sea Ice Tastula, Esa-Matti Vihma, Timo Andreas, Edgar L. Galperin, Boris 2013-01-01T08:00:00Z application/pdf https://digitalcommons.usf.edu/msc_facpub/1494 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=2464&context=msc_facpub unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/msc_facpub/1494 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=2464&context=msc_facpub default Marine Science Faculty Publications reanalysis sea ice diurnal cycle Antarctica Life Sciences article 2013 ftunisfloridatam 2022-01-20T18:38:49Z The diurnal cycles of near-surface meteorological parameters over Antarctic sea ice in six widely used atmospheric reanalyses are validated against observations from Ice Station Weddell. The station drifted from February through May 1992 and provided the most extensive set of meteorological observations ever collected in the Antarctic sea ice zone. For the radiative and turbulent surface fluxes, both the amplitude and shape of the diurnal cycles vary considerably among different reanalyses. Near-surface temperature, specific humidity, and wind speed in the reanalyses all feature small diurnal ranges, which, in most cases, fall within the uncertainties of the observed cycle. A skill score approach revealed the superiority of the ERA-Interim reanalysis in reproducing the observed diurnal cycles. An explanation for the shortcomings in the reanalyses is their failure to capture the diurnal cycle in cloud cover fraction, which leads to errors in other quantities as well. Apart from the diurnal cycles, NCEP-CFSR gave the best error statistics. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Digital Commons University of South Florida (USF) Antarctic The Antarctic Weddell |
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Open Polar |
collection |
Digital Commons University of South Florida (USF) |
op_collection_id |
ftunisfloridatam |
language |
unknown |
topic |
reanalysis sea ice diurnal cycle Antarctica Life Sciences |
spellingShingle |
reanalysis sea ice diurnal cycle Antarctica Life Sciences Tastula, Esa-Matti Vihma, Timo Andreas, Edgar L. Galperin, Boris Validation of the Diurnal Cycles in Atmospheric Reanalyses Over Antarctic Sea Ice |
topic_facet |
reanalysis sea ice diurnal cycle Antarctica Life Sciences |
description |
The diurnal cycles of near-surface meteorological parameters over Antarctic sea ice in six widely used atmospheric reanalyses are validated against observations from Ice Station Weddell. The station drifted from February through May 1992 and provided the most extensive set of meteorological observations ever collected in the Antarctic sea ice zone. For the radiative and turbulent surface fluxes, both the amplitude and shape of the diurnal cycles vary considerably among different reanalyses. Near-surface temperature, specific humidity, and wind speed in the reanalyses all feature small diurnal ranges, which, in most cases, fall within the uncertainties of the observed cycle. A skill score approach revealed the superiority of the ERA-Interim reanalysis in reproducing the observed diurnal cycles. An explanation for the shortcomings in the reanalyses is their failure to capture the diurnal cycle in cloud cover fraction, which leads to errors in other quantities as well. Apart from the diurnal cycles, NCEP-CFSR gave the best error statistics. |
format |
Article in Journal/Newspaper |
author |
Tastula, Esa-Matti Vihma, Timo Andreas, Edgar L. Galperin, Boris |
author_facet |
Tastula, Esa-Matti Vihma, Timo Andreas, Edgar L. Galperin, Boris |
author_sort |
Tastula, Esa-Matti |
title |
Validation of the Diurnal Cycles in Atmospheric Reanalyses Over Antarctic Sea Ice |
title_short |
Validation of the Diurnal Cycles in Atmospheric Reanalyses Over Antarctic Sea Ice |
title_full |
Validation of the Diurnal Cycles in Atmospheric Reanalyses Over Antarctic Sea Ice |
title_fullStr |
Validation of the Diurnal Cycles in Atmospheric Reanalyses Over Antarctic Sea Ice |
title_full_unstemmed |
Validation of the Diurnal Cycles in Atmospheric Reanalyses Over Antarctic Sea Ice |
title_sort |
validation of the diurnal cycles in atmospheric reanalyses over antarctic sea ice |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2013 |
url |
https://digitalcommons.usf.edu/msc_facpub/1494 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=2464&context=msc_facpub |
geographic |
Antarctic The Antarctic Weddell |
geographic_facet |
Antarctic The Antarctic Weddell |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_source |
Marine Science Faculty Publications |
op_relation |
https://digitalcommons.usf.edu/msc_facpub/1494 https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=2464&context=msc_facpub |
op_rights |
default |
_version_ |
1766275199560318976 |