Different long-term trends of extra-tropical cyclones and windstorms in ERA-20C and NOAA-20CR reanalyses

Befort, Daniel J., Wild, Simon, Kruschke, Tim, Ulbrich, Uwe and Leckebusch, Gregor C. (2016) Different long-term trends of extra-tropical cyclones and windstorms in ERA-20C and NOAA-20CR reanalyses Atmospheric Science Letters, 17 (11). pp. 586-595. DOI 10.1002/asl.694.

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Abstract

NOAA 20th century and ERA-20C reanalysis datasets are evaluated regarding the representation of extra-tropical cyclones and windstorms over the Northern and Southern Hemisphere during the respective 6-month winter seasons. The results indicate substantial differences in low-frequency variability between the two datasets – especially in the first half of the 20th century – expressed in different signs and/or magnitudes of long-term trends. This is hampering a reliable analysis of real long-term trends of cyclone and windstorm activity. However, higher-frequency variability is in good agreement between both datasets especially for the Northern Hemisphere.

Document Type: Article
Keywords: extra-tropical cyclones; windstorm events; reanalysis data
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-ME Maritime Meteorology
Refereed: Yes
DOI etc.: 10.1002/asl.694
ISSN: 1530-261X
Projects: MiKlip, ROMIC, EVE
Date Deposited: 17 Oct 2016 10:42
Last Modified: 02 May 2017 13:48
URI: http://eprints.uni-kiel.de/id/eprint/34353

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