Comparison of 850‐hPa relative humidity between ERA‐40 and NCEP/NCAR re‐analyses: detection of suspicious data in ERA‐40

Abstract An exploratory study is performed on the 850‐hPa relative humidity data (RH850) extracted from the Re‐Analysis Project (ERA‐40) and National Centers for Environmental Prediction (NCEP)/National Center for Atmospheric Research (NCAR) re‐analyses covering a domain centred on western Europe (6...

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Published in:Atmospheric Science Letters
Main Authors: Ben Daoud, Aurélien, Sauquet, Eric, Lang, Michel, Obled, Charles, Bontron, Guillaume
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2009
Subjects:
North Atlantic
Online Access:http://dx.doi.org/10.1002/asl.208
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spelling crwiley:10.1002/asl.208 2024-06-02T08:11:19+00:00 Comparison of 850‐hPa relative humidity between ERA‐40 and NCEP/NCAR re‐analyses: detection of suspicious data in ERA‐40 Ben Daoud, Aurélien Sauquet, Eric Lang, Michel Obled, Charles Bontron, Guillaume 2009 http://dx.doi.org/10.1002/asl.208 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fasl.208 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/asl.208 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Atmospheric Science Letters volume 10, issue 1, page 43-47 ISSN 1530-261X 1530-261X journal-article 2009 crwiley https://doi.org/10.1002/asl.208 2024-05-03T11:45:01Z Abstract An exploratory study is performed on the 850‐hPa relative humidity data (RH850) extracted from the Re‐Analysis Project (ERA‐40) and National Centers for Environmental Prediction (NCEP)/National Center for Atmospheric Research (NCAR) re‐analyses covering a domain centred on western Europe (60°W–60°E, 15°N–75°N). The largest deviations between the two data archives are observed over the North Atlantic Ocean. In addition, unrealistic values of RH850 are detected in the ERA‐40 re‐analysis at resolutions of both 2.5° and 1.125°. There is no strong correlation between RH850 provided by ERA‐40 and observations from radio sounding stations, thus ruling out a straightforward correction of the detected anomalous values. Copyright © 2009 Royal Meteorological Society Article in Journal/Newspaper North Atlantic Wiley Online Library Atmospheric Science Letters 10 1 43 47
institution Open Polar
collection Wiley Online Library
op_collection_id crwiley
language English
description Abstract An exploratory study is performed on the 850‐hPa relative humidity data (RH850) extracted from the Re‐Analysis Project (ERA‐40) and National Centers for Environmental Prediction (NCEP)/National Center for Atmospheric Research (NCAR) re‐analyses covering a domain centred on western Europe (60°W–60°E, 15°N–75°N). The largest deviations between the two data archives are observed over the North Atlantic Ocean. In addition, unrealistic values of RH850 are detected in the ERA‐40 re‐analysis at resolutions of both 2.5° and 1.125°. There is no strong correlation between RH850 provided by ERA‐40 and observations from radio sounding stations, thus ruling out a straightforward correction of the detected anomalous values. Copyright © 2009 Royal Meteorological Society
format Article in Journal/Newspaper
author Ben Daoud, Aurélien
Sauquet, Eric
Lang, Michel
Obled, Charles
Bontron, Guillaume
spellingShingle Ben Daoud, Aurélien
Sauquet, Eric
Lang, Michel
Obled, Charles
Bontron, Guillaume
Comparison of 850‐hPa relative humidity between ERA‐40 and NCEP/NCAR re‐analyses: detection of suspicious data in ERA‐40
author_facet Ben Daoud, Aurélien
Sauquet, Eric
Lang, Michel
Obled, Charles
Bontron, Guillaume
author_sort Ben Daoud, Aurélien
title Comparison of 850‐hPa relative humidity between ERA‐40 and NCEP/NCAR re‐analyses: detection of suspicious data in ERA‐40
title_short Comparison of 850‐hPa relative humidity between ERA‐40 and NCEP/NCAR re‐analyses: detection of suspicious data in ERA‐40
title_full Comparison of 850‐hPa relative humidity between ERA‐40 and NCEP/NCAR re‐analyses: detection of suspicious data in ERA‐40
title_fullStr Comparison of 850‐hPa relative humidity between ERA‐40 and NCEP/NCAR re‐analyses: detection of suspicious data in ERA‐40
title_full_unstemmed Comparison of 850‐hPa relative humidity between ERA‐40 and NCEP/NCAR re‐analyses: detection of suspicious data in ERA‐40
title_sort comparison of 850‐hpa relative humidity between era‐40 and ncep/ncar re‐analyses: detection of suspicious data in era‐40
publisher Wiley
publishDate 2009
url http://dx.doi.org/10.1002/asl.208
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fasl.208
https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/asl.208
genre North Atlantic
genre_facet North Atlantic
op_source Atmospheric Science Letters
volume 10, issue 1, page 43-47
ISSN 1530-261X 1530-261X
op_rights http://onlinelibrary.wiley.com/termsAndConditions#vor
op_doi https://doi.org/10.1002/asl.208
container_title Atmospheric Science Letters
container_volume 10
container_issue 1
container_start_page 43
op_container_end_page 47
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