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YU Qun, ZHOU Faxiu, WANG Qi. Sea effects on local snows at Shandong Peninsula[J]. Journal of East China Normal University (Natural Sciences), 2009, (3): 160-169.
Citation:
YU Qun, ZHOU Faxiu, WANG Qi. Sea effects on local snows at Shandong Peninsula[J]. Journal of East China Normal University (Natural Sciences), 2009, (3): 160-169.
YU Qun, ZHOU Faxiu, WANG Qi. Sea effects on local snows at Shandong Peninsula[J]. Journal of East China Normal University (Natural Sciences), 2009, (3): 160-169.
Citation:
YU Qun, ZHOU Faxiu, WANG Qi. Sea effects on local snows at Shandong Peninsula[J]. Journal of East China Normal University (Natural Sciences), 2009, (3): 160-169.
Two kinds of snows, called systematic snow and cold outbreak snow, at northern Shandong Peninsula were identified by using EOF (empirical orthogonal function). Forming mechanism of coldoutbreak snow, namely cold snow, discussed climatically. The favorable circulation pattern is lowlevel strong cold advection accompanied by deepening trough with NNW flow strengthening. Then heat flux and water vapour from the sea, as well as lowlevel stratification instability play an important role. The results show that thermal regime and evaporation in December in a year provide more advantaged capability for local snow, as accords with the observational facts. It is baroclinic boundary layer and land friction and orographic forcing that strengthen convection, so that peculiar spacial snow pattern forms at Shandong Peninsula. Further study shows that lowfrequent inner gravity wave is one of important dynamical factors which are able to inspire convection and organize snow.