Intercomparison of global cloud cover fields over oceans from VOS observations and NCEP/NCAR reanalysis
The paper inter-compares the total cloud cover over the World Ocean from marine visual observations assimilated in the International Comprehensive Ocean-Atmosphere Data Set (ICOADS) and National Centers of Environmental Prediction/National Center of Atmospheric Research (NCEP-NCAR) reanalysis. The I...
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Language: | English |
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Royal Meteorological Society
2007
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Online Access: | https://oceanrep.geomar.de/id/eprint/762/ https://oceanrep.geomar.de/id/eprint/762/1/1490_ftp.pdf https://doi.org/10.1002/joc.1490 |
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ftoceanrep:oai:oceanrep.geomar.de:762 2024-09-30T14:39:39+00:00 Intercomparison of global cloud cover fields over oceans from VOS observations and NCEP/NCAR reanalysis Bedacht, Ernst Gulev, Sergey K. Macke, Andreas 2007 text https://oceanrep.geomar.de/id/eprint/762/ https://oceanrep.geomar.de/id/eprint/762/1/1490_ftp.pdf https://doi.org/10.1002/joc.1490 en eng Royal Meteorological Society https://oceanrep.geomar.de/id/eprint/762/1/1490_ftp.pdf Bedacht, E., Gulev, S. K. and Macke, A. (2007) Intercomparison of global cloud cover fields over oceans from VOS observations and NCEP/NCAR reanalysis. International Journal of Climatology, 27 . pp. 1707-1719. DOI 10.1002/joc.1490 <https://doi.org/10.1002/joc.1490>. doi:10.1002/joc.1490 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2007 ftoceanrep https://doi.org/10.1002/joc.1490 2024-09-04T05:04:40Z The paper inter-compares the total cloud cover over the World Ocean from marine visual observations assimilated in the International Comprehensive Ocean-Atmosphere Data Set (ICOADS) and National Centers of Environmental Prediction/National Center of Atmospheric Research (NCEP-NCAR) reanalysis. The Intercomparison covers the period from 1948 to 2002. NCEP-NCAR reanalysis shows about 10% of fractional cloud cover smaller than the visual observations do. The largest differences are observed in the mid and sub-polar latitudes. In the tropics, NCEP-NCAR data show slightly higher cloud cover then ICOADS. These systematic differences are quite persistent through the year with somewhat stronger differences in summer. Comparison of the characteristics of inter-annual variability shows little consistency between visually observed total cloud cover and total cloudiness diagnosed by the reanalysis. Linear trends are primarily positive in the ICOADS cloud data, while in the NCEP-NCAR reanalysis they show downward trends in the tropics and upward tendencies in the mid and high latitudes. Analysis of the effect of sampling in ICOADS shows that sampling inhomogeneity cannot fully explain the disagreements observed. At the same time, the major climate variability patterns such as North Atlantic Oscillation (NAO) and El-Nino—Southern Oscillation (ENSO) are well captured in both ICOADS and NCEP-NCAR cloud cover data sets Article in Journal/Newspaper North Atlantic North Atlantic oscillation OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) International Journal of Climatology 27 13 1707 1719 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
The paper inter-compares the total cloud cover over the World Ocean from marine visual observations assimilated in the International Comprehensive Ocean-Atmosphere Data Set (ICOADS) and National Centers of Environmental Prediction/National Center of Atmospheric Research (NCEP-NCAR) reanalysis. The Intercomparison covers the period from 1948 to 2002. NCEP-NCAR reanalysis shows about 10% of fractional cloud cover smaller than the visual observations do. The largest differences are observed in the mid and sub-polar latitudes. In the tropics, NCEP-NCAR data show slightly higher cloud cover then ICOADS. These systematic differences are quite persistent through the year with somewhat stronger differences in summer. Comparison of the characteristics of inter-annual variability shows little consistency between visually observed total cloud cover and total cloudiness diagnosed by the reanalysis. Linear trends are primarily positive in the ICOADS cloud data, while in the NCEP-NCAR reanalysis they show downward trends in the tropics and upward tendencies in the mid and high latitudes. Analysis of the effect of sampling in ICOADS shows that sampling inhomogeneity cannot fully explain the disagreements observed. At the same time, the major climate variability patterns such as North Atlantic Oscillation (NAO) and El-Nino—Southern Oscillation (ENSO) are well captured in both ICOADS and NCEP-NCAR cloud cover data sets |
format |
Article in Journal/Newspaper |
author |
Bedacht, Ernst Gulev, Sergey K. Macke, Andreas |
spellingShingle |
Bedacht, Ernst Gulev, Sergey K. Macke, Andreas Intercomparison of global cloud cover fields over oceans from VOS observations and NCEP/NCAR reanalysis |
author_facet |
Bedacht, Ernst Gulev, Sergey K. Macke, Andreas |
author_sort |
Bedacht, Ernst |
title |
Intercomparison of global cloud cover fields over oceans from VOS observations and NCEP/NCAR reanalysis |
title_short |
Intercomparison of global cloud cover fields over oceans from VOS observations and NCEP/NCAR reanalysis |
title_full |
Intercomparison of global cloud cover fields over oceans from VOS observations and NCEP/NCAR reanalysis |
title_fullStr |
Intercomparison of global cloud cover fields over oceans from VOS observations and NCEP/NCAR reanalysis |
title_full_unstemmed |
Intercomparison of global cloud cover fields over oceans from VOS observations and NCEP/NCAR reanalysis |
title_sort |
intercomparison of global cloud cover fields over oceans from vos observations and ncep/ncar reanalysis |
publisher |
Royal Meteorological Society |
publishDate |
2007 |
url |
https://oceanrep.geomar.de/id/eprint/762/ https://oceanrep.geomar.de/id/eprint/762/1/1490_ftp.pdf https://doi.org/10.1002/joc.1490 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
https://oceanrep.geomar.de/id/eprint/762/1/1490_ftp.pdf Bedacht, E., Gulev, S. K. and Macke, A. (2007) Intercomparison of global cloud cover fields over oceans from VOS observations and NCEP/NCAR reanalysis. International Journal of Climatology, 27 . pp. 1707-1719. DOI 10.1002/joc.1490 <https://doi.org/10.1002/joc.1490>. doi:10.1002/joc.1490 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1002/joc.1490 |
container_title |
International Journal of Climatology |
container_volume |
27 |
container_issue |
13 |
container_start_page |
1707 |
op_container_end_page |
1719 |
_version_ |
1811642255652421632 |