http://www.clim-past.net/13/1199/2017/cp-13-1199-2017.pdf
Abstract
The impact of solar variability on weather and climate in central Europe is still not well understood. In this paper we use a new time series of daily weather types to analyse the influence of the 11-year solar cycle on the tropospheric weather of central Europe. We employ a novel, daily weather type classification over the period 1763–2009 and investigate the occurrence frequency of weather types under low, moderate, and high solar activity level. Results show a tendency towards fewer days with westerly and west-southwesterly flow over central Europe under low solar activity. In parallel, the occurrence of northerly and easterly types increases. For the 1958–2009 period, a more detailed view can be gained from reanalysis data. Mean sea level pressure composites under low solar activity also show a reduced zonal flow, with an increase of the mean blocking frequency between Iceland and Scandinavia. Weather types and reanalysis data show that the 11-year solar cycle influences the late winter atmospheric circulation over central Europe with colder (warmer) conditionsunder low (high) solar activity.
-> Kans op kouder weer groter in de tweede helft van de winter tijdens lage zonneactiviteit.
Influence of solar variability on the occurrence of central European weather types from 1763 to 2009
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- Berichten: 12294
- Lid geworden op: 31-12-1977
Re: Influence of solar variability on the occurrence of central European weather types from 1763 to 2009
Wat in eerder onderzoek niet luktehttp://iopscience.iop.org/article/10.1088/1748-9326/8/2/024014/pdf is bij de classificatiemethode - die de stromingspatronen vooropstelt - over een recente periode met voldoende informatie wel gelukt. De mate van kouder en warmer hangt van meer factoren af.