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Titel |
Shifts in early spring wind regime in North-East Europe (1955–2007) |
VerfasserIn |
S. Keevallik, T. Soomere |
Medientyp |
Artikel
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Sprache |
Englisch
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ISSN |
1814-9324
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Digitales Dokument |
URL |
Erschienen |
In: Climate of the Past ; 4, no. 3 ; Nr. 4, no. 3 (2008-08-04), S.147-152 |
Datensatznummer |
250001738
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Publikation (Nr.) |
copernicus.org/cp-4-147-2008.pdf |
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Zusammenfassung |
Changes to the winter-to-spring switch-time of the upper air flow regime at
the 850 and 500 hPa levels over the north-eastern Baltic Sea are analyzed
based on a data set extending from 1955 to 2007. The long-term variation of
the air flow in early spring (March) exhibits multiple regime shifts. The
shifts are extracted by means of a vector analysis of the monthly mean air
flow and using statistical shift detection technology. In the middle of the
1960s the average air flow turned from NW (WNW) to W (WSW) at the 500 (850) hPa
level. The original regime was restored in the mid-1990s. The regime
shifts in the average air flow in March can be interpreted as changes in the
transition time from winter to summer circulation type. |
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