Validation of eight atmospheric reanalyses in the Antarctic Peninsula region
Abstract Eight atmospheric reanalyses were compared against observed vertical profiles of temperature, specific humidity and wind speed collected by two research aircraft in F ebruary– M arch 2010 in the A ntarctic P eninsula region. These data offered a rare possibility to validate reanalyses again...
Published in: | Quarterly Journal of the Royal Meteorological Society |
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crwiley:10.1002/qj.2691 2024-09-15T17:44:16+00:00 Validation of eight atmospheric reanalyses in the Antarctic Peninsula region Nygård, Tiina Vihma, Timo Birnbaum, Gerit Hartmann, Jörg King, John Lachlan‐Cope, Tom Ladkin, Russell Lüpkes, Christof Weiss, Alexandra Suomen Akatemia Natural Environment Research Council 2015 http://dx.doi.org/10.1002/qj.2691 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.2691 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.2691 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Quarterly Journal of the Royal Meteorological Society volume 142, issue 695, page 684-692 ISSN 0035-9009 1477-870X journal-article 2015 crwiley https://doi.org/10.1002/qj.2691 2024-08-30T04:08:39Z Abstract Eight atmospheric reanalyses were compared against observed vertical profiles of temperature, specific humidity and wind speed collected by two research aircraft in F ebruary– M arch 2010 in the A ntarctic P eninsula region. These data offered a rare possibility to validate reanalyses against independent in situ data which have not been assimilated into the reanalyses. The reanalyses had generally too moist profiles with too low wind speeds, but otherwise the errors in the reanalyses had large spatial differences. On the eastern side of the peninsula, the near‐surface temperatures were largely overestimated. None of the reanalyses outperformed the others in all variables, at all altitudes and on both sides of the peninsula. Generally, NCEP‐CFSR and MERRA had the smallest errors in temperature profiles, JRA ‐55 had marginally the most accurate specific humidity profiles and NCEP‐CFSR had the best wind profiles. The reanalyses were coherent, although biased, on the western side of the A ntarctic P eninsula, but on the eastern side the spread was large. All the reanalyses underestimated the variability between the individual profiles of temperature and wind speed. The modern reanalyses with a sufficient spatial resolution and an adequate data assimilation method outperformed the others, especially on the eastern side. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Wiley Online Library Quarterly Journal of the Royal Meteorological Society 142 695 684 692 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Eight atmospheric reanalyses were compared against observed vertical profiles of temperature, specific humidity and wind speed collected by two research aircraft in F ebruary– M arch 2010 in the A ntarctic P eninsula region. These data offered a rare possibility to validate reanalyses against independent in situ data which have not been assimilated into the reanalyses. The reanalyses had generally too moist profiles with too low wind speeds, but otherwise the errors in the reanalyses had large spatial differences. On the eastern side of the peninsula, the near‐surface temperatures were largely overestimated. None of the reanalyses outperformed the others in all variables, at all altitudes and on both sides of the peninsula. Generally, NCEP‐CFSR and MERRA had the smallest errors in temperature profiles, JRA ‐55 had marginally the most accurate specific humidity profiles and NCEP‐CFSR had the best wind profiles. The reanalyses were coherent, although biased, on the western side of the A ntarctic P eninsula, but on the eastern side the spread was large. All the reanalyses underestimated the variability between the individual profiles of temperature and wind speed. The modern reanalyses with a sufficient spatial resolution and an adequate data assimilation method outperformed the others, especially on the eastern side. |
author2 |
Suomen Akatemia Natural Environment Research Council |
format |
Article in Journal/Newspaper |
author |
Nygård, Tiina Vihma, Timo Birnbaum, Gerit Hartmann, Jörg King, John Lachlan‐Cope, Tom Ladkin, Russell Lüpkes, Christof Weiss, Alexandra |
spellingShingle |
Nygård, Tiina Vihma, Timo Birnbaum, Gerit Hartmann, Jörg King, John Lachlan‐Cope, Tom Ladkin, Russell Lüpkes, Christof Weiss, Alexandra Validation of eight atmospheric reanalyses in the Antarctic Peninsula region |
author_facet |
Nygård, Tiina Vihma, Timo Birnbaum, Gerit Hartmann, Jörg King, John Lachlan‐Cope, Tom Ladkin, Russell Lüpkes, Christof Weiss, Alexandra |
author_sort |
Nygård, Tiina |
title |
Validation of eight atmospheric reanalyses in the Antarctic Peninsula region |
title_short |
Validation of eight atmospheric reanalyses in the Antarctic Peninsula region |
title_full |
Validation of eight atmospheric reanalyses in the Antarctic Peninsula region |
title_fullStr |
Validation of eight atmospheric reanalyses in the Antarctic Peninsula region |
title_full_unstemmed |
Validation of eight atmospheric reanalyses in the Antarctic Peninsula region |
title_sort |
validation of eight atmospheric reanalyses in the antarctic peninsula region |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1002/qj.2691 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.2691 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.2691 |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
Quarterly Journal of the Royal Meteorological Society volume 142, issue 695, page 684-692 ISSN 0035-9009 1477-870X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/qj.2691 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
142 |
container_issue |
695 |
container_start_page |
684 |
op_container_end_page |
692 |
_version_ |
1810491679571968000 |