Ice regime dynamics in the Nemunas River, Lithuania

Climate Research

K. Kilkus¹  E. Stonevicius¹  G. Stankunavicius¹ 

关键词: River ice cover;    Freeze up;    Break up;    Atmospheric forcing;   

DOI  :  10.3354/cr00707

来源: Inter-Research Science Publishing

【 摘 要 】

ABSTRACT: Ice cover persistence in the lower reaches of the Nemunas River has decreased during the last 150 yr. The variation in the river freeze- and break-up dates is related to climatic variables. The significance of the negative break-up trend exceeds that of the positive freeze-up trend. Low-frequency large-scale atmospheric circulation patterns such as the North Atlantic Oscillation and Arctic Oscillation (NAO/AO) appear to have more influence on the break-up datethan on the freeze-up date. Different classification methods applied to the atmospheric patterns prevailing in the early freeze-up events reveal similar results; however, differences arising between classifications are attributable to non-persistent and high frequency patterns.

【 授权许可】

Unknown