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| Titel |
Detail comparison of wind characteristics from ECMWF and NCEP/NCAR reanalysis in the middle latitude stratosphere |
| VerfasserIn |
Michal Kozubek, Jan Lastovicka, Peter Krizan |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250047033
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| Zusammenfassung |
| We are focusing on the detail comparison of reanalysis dataset from ECMWF and NCEP/NCAR centers. We compare reanalysis of wind speed and wind direction (pressure level 10 and 100 hPa) from NCEP/NCAR (1958-2008), ERA-40 (1958-2001), ERA-operim (2002-2008) and ERA-Interim (1989-2008). In this paper various differences between examined reanalysis can be seen. We use yearly and monthly averages of wind speed for selected region of middle latitude (52.5°N). Here we can see differences about 15-30% for 10 hPa and about 10% for 100 hPa. The bigger differences are observed between reanalysis ERA-Interim and other ones. In this work is also done a comparison of raw data for selected year (year and month with the biggest differences) and maps of differences for area 30°N-80°N in the period 1958-2002 for each grid point (2.5°x2.5°). Rather large differences were observed in some days between both wind speeds and wind directions. |
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