Different long‐term trends of extra‐tropical cyclones and windstorms in ERA‐20C and NOAA‐20CR reanalyses. (14th October 2016)

• Record Type: Journal Article
• Authors: Befort, Daniel J.; Wild, Simon; Kruschke, Tim; Ulbrich, Uwe; Leckebusch, Gregor C.
• Is Part Of: Atmospheric science letters. Volume 17:Number 11(2016)
• Page Start: 586
• Page End: 595
• Publication Date: 2016-10-14
• Subjects: extra‐tropical cyclones -- windstorm events -- reanalysis data; Atmospheric physics -- Periodicals; 551
• DOI: 10.1002/asl.694
• Languages: English
• ISSNs: 1530-261X

Abstract

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.