Interannual variability of Central European climate parameters and their relation to the large-scale circulation

摘要

An Empirical Orthogonal Function (EOF) analysis shows that the JJA temperature varibility is almost entirely controlled by the first two EOFs (71% and 15%). The same holds for the January/February (JF) sum of precipitation varibility (52% and 17%). The JJA sum of precipitation varibility is also controlled by the first two EOFs (41% and 16%) and partially by the third EOF (10%). The relationship of the temperature and the precipitation field to the large-scale circulation, represented by the North Atlantic/European sea-level pressure (SLP) field, is investigated by a Canonical Correlation Analysis (CCA). The number of CCA pairs which account for most of the temperature variance depends on the meteorological parameter and the season. The connection between the large-scale circulation and the seasonal precipitation of the summer mean temperature is weaker. (orig.)