Interannual variability in the summertime hydrological cycle over European regions

被引:4
|
作者
Zveryaev, Igor I. [1 ]
Zahn, Matthias [2 ]
Allan, Richard P. [3 ]
机构
[1] Russian Acad Sci, PP Shirshov Inst Oceanol, Moscow, Russia
[2] Helmholtz Ctr Geesthacht, Inst Coastal Res, Geesthacht, Germany
[3] Univ Reading, Dept Meteorol, Reading, Berks, England
基金
俄罗斯科学基金会; 英国自然环境研究理事会;
关键词
SOIL-MOISTURE; WATER-VAPOR; ATMOSPHERIC MOISTURE; PRECIPITATION VARIABILITY; SURFACE-TEMPERATURE; CLIMATE-CHANGE; NORTH-AMERICA; MODEL; LAND; PREDICTION;
D O I
10.1002/2015JD024425
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
A variety of observations-based hydrological variables from different data sets are used to investigate interannual variability and changes in the summertime hydrological cycle over four European regions-Iberian Peninsula (IP), British Isles (BI), Central Europe (CE), and European Russia (ER). An analysis performed on seasonal means (June, July, and August) suggests that soil moisture variability is impacted almost equally by precipitation and air temperature in BI and ER regions. However, stronger links between soil moisture and precipitation are revealed for CE region and between soil moisture and air temperature for IP region. In all except IP regions summertime interannual variability of column-integrated water vapor is strongly linked to air temperature consistent with the dominating influence of the Clausius-Clapeyron equation. In BI, CE, and ER interannual variability of regional precipitation is driven by variations in atmospheric moisture transport into these regions. In IP the link between precipitation and moisture transport is relatively weak. Based on monthly data, analysis of the lag-lead correlations revealed specific regional relationships between different hydrological variables. In particular, it is shown that in some regions (and months) interannual variability of soil moisture is linked more strongly to precipitation and air temperature anomalies in the previous month, rather than in the coinciding month. An analysis of the vertical structure of regional atmospheric moisture transport has revealed that the more continental the climate of the region is, the larger deviation from the mean (i.e., climatological) profile might be observed during anomalously dry/wet summers.
引用
收藏
页码:5381 / 5394
页数:14
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