Comparison of COADS Release 1a Winds with Instrumental Measurements in the Northwest Atlantic
The reliability of the Comprehensive Ocean–Atmosphere Dataset (COADS) Release 1a 2° monthly winds is tested by comparing it with instrumental measurements in the northwest Atlantic from 1981 to 1991. The instrumental dataset contains anemometer measurements of a very high homogeneity and quality, wh...
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ftoceanrep:oai:oceanrep.geomar.de:4362 2023-05-15T17:45:26+02:00 Comparison of COADS Release 1a Winds with Instrumental Measurements in the Northwest Atlantic Gulev, Sergej 1999 text https://oceanrep.geomar.de/id/eprint/4362/ https://oceanrep.geomar.de/id/eprint/4362/1/1520-0426%281999%29016_0133_cocrww_2.0.co%3B2.pdf https://doi.org/10.1175/1520-0426(1999)016<0133:COCRWW>2.0.CO;2 en eng AMS (American Meteorological Society) https://oceanrep.geomar.de/id/eprint/4362/1/1520-0426%281999%29016_0133_cocrww_2.0.co%3B2.pdf Gulev, S. (1999) Comparison of COADS Release 1a Winds with Instrumental Measurements in the Northwest Atlantic. Open Access Journal of Atmospheric and Oceanic Technology, 16 . pp. 133-145. DOI 10.1175/1520-0426(1999)016<0133:COCRWW>2.0.CO;2 <https://doi.org/10.1175/1520-0426%281999%29016%3C0133%3ACOCRWW%3E2.0.CO%3B2>. doi:10.1175/1520-0426(1999)016<0133:COCRWW>2.0.CO;2 cc_by_3.0 info:eu-repo/semantics/openAccess Article PeerReviewed 1999 ftoceanrep https://doi.org/10.1175/1520-0426(1999)016<0133:COCRWW>2.0.CO;2 2023-04-07T14:49:31Z The reliability of the Comprehensive Ocean–Atmosphere Dataset (COADS) Release 1a 2° monthly winds is tested by comparing it with instrumental measurements in the northwest Atlantic from 1981 to 1991. The instrumental dataset contains anemometer measurements of a very high homogeneity and quality, which were taken by six research sister ships with known anemometer heights in the northwest Atlantic. Special data processing was made with instrumental samples to provide compatibility with the COADS winds. Comparison shows overestimation of the COADS winds in the low ranges and underestimation of the strong and moderate winds. Application of the alternative equivalent Beaufort scales does not remove this bias and makes it even more pronounced. Thus, the conclusion is made that the disagreement obtained results primarily from the uncertainties of anemometer measurements in COADS, especially from the incorrect evaluation of the true wind. Instrumental data also do not indicate significant long-term interannual changes, which are pronounced in the COADS dataset for the 1980s. Some regional features of the comparison are discussed. Article in Journal/Newspaper Northwest Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The reliability of the Comprehensive Ocean–Atmosphere Dataset (COADS) Release 1a 2° monthly winds is tested by comparing it with instrumental measurements in the northwest Atlantic from 1981 to 1991. The instrumental dataset contains anemometer measurements of a very high homogeneity and quality, which were taken by six research sister ships with known anemometer heights in the northwest Atlantic. Special data processing was made with instrumental samples to provide compatibility with the COADS winds. Comparison shows overestimation of the COADS winds in the low ranges and underestimation of the strong and moderate winds. Application of the alternative equivalent Beaufort scales does not remove this bias and makes it even more pronounced. Thus, the conclusion is made that the disagreement obtained results primarily from the uncertainties of anemometer measurements in COADS, especially from the incorrect evaluation of the true wind. Instrumental data also do not indicate significant long-term interannual changes, which are pronounced in the COADS dataset for the 1980s. Some regional features of the comparison are discussed. |
format |
Article in Journal/Newspaper |
author |
Gulev, Sergej |
spellingShingle |
Gulev, Sergej Comparison of COADS Release 1a Winds with Instrumental Measurements in the Northwest Atlantic |
author_facet |
Gulev, Sergej |
author_sort |
Gulev, Sergej |
title |
Comparison of COADS Release 1a Winds with Instrumental Measurements in the Northwest Atlantic |
title_short |
Comparison of COADS Release 1a Winds with Instrumental Measurements in the Northwest Atlantic |
title_full |
Comparison of COADS Release 1a Winds with Instrumental Measurements in the Northwest Atlantic |
title_fullStr |
Comparison of COADS Release 1a Winds with Instrumental Measurements in the Northwest Atlantic |
title_full_unstemmed |
Comparison of COADS Release 1a Winds with Instrumental Measurements in the Northwest Atlantic |
title_sort |
comparison of coads release 1a winds with instrumental measurements in the northwest atlantic |
publisher |
AMS (American Meteorological Society) |
publishDate |
1999 |
url |
https://oceanrep.geomar.de/id/eprint/4362/ https://oceanrep.geomar.de/id/eprint/4362/1/1520-0426%281999%29016_0133_cocrww_2.0.co%3B2.pdf https://doi.org/10.1175/1520-0426(1999)016<0133:COCRWW>2.0.CO;2 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/4362/1/1520-0426%281999%29016_0133_cocrww_2.0.co%3B2.pdf Gulev, S. (1999) Comparison of COADS Release 1a Winds with Instrumental Measurements in the Northwest Atlantic. Open Access Journal of Atmospheric and Oceanic Technology, 16 . pp. 133-145. DOI 10.1175/1520-0426(1999)016<0133:COCRWW>2.0.CO;2 <https://doi.org/10.1175/1520-0426%281999%29016%3C0133%3ACOCRWW%3E2.0.CO%3B2>. doi:10.1175/1520-0426(1999)016<0133:COCRWW>2.0.CO;2 |
op_rights |
cc_by_3.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1175/1520-0426(1999)016<0133:COCRWW>2.0.CO;2 |
_version_ |
1766148420385374208 |