利用丹东地区2011～2014年4个观测站逐月气温极值,分析了近4年最高、最低气温以及日较差的南北差异的四季变化特征,对于南北差异明显、差异变化较大的春季最高气温和冬季最低气温不同高低空天气形势进行对比分析。结果表明,丹东地区平...利用丹东地区2011～2014年4个观测站逐月气温极值,分析了近4年最高、最低气温以及日较差的南北差异的四季变化特征,对于南北差异明显、差异变化较大的春季最高气温和冬季最低气温不同高低空天气形势进行对比分析。结果表明,丹东地区平均最高气温春季、夏季在凤城最高,丹东和宽甸的最高气温持平,东港最低;秋季和冬季东港最高,其次是丹东和凤城,宽甸最低。丹东地区平均最低气温为东港、丹东、凤城、宽甸自南向北递减,南北差异较小的为夏季,其次是春季、秋季,差异最大的是冬季。天气形势：春季最高气温北部比南部偏高5℃以上,高空多处于低涡底部或低压槽底,850 h Pa风场为偏西气流控制,地面为弱气压场控制;春季最高气温北部比南部偏低,高空多处于低涡后部或槽后,850 h Pa风场为偏北气流控制,地面为高压前部,地面有云或无云大风,风向为偏北风;冬季最低气温北部比南部偏低8℃以上,高空为涡后或槽后,850 h Pa风场为西北气流或偏北气流控制,地面辽宁北部为地形槽,长白山地区为高压场;冬季最低气温北部比南部略低,高空为涡前或槽前,850 h Pa为西南气流控制,地面受低压或高压后部偏南气流控制,云量较多。展开更多
By analyzing the features of cold and warm summer of the northeast China during 1961-2002,the results showed the time from 1960s to late 1970s was the phase of cold summer took place,and the time from 1980s to early 1...By analyzing the features of cold and warm summer of the northeast China during 1961-2002,the results showed the time from 1960s to late 1970s was the phase of cold summer took place,and the time from 1980s to early 1990s was the phase of cold and warm summer alternately took place.After the middle and late period of 1990s,it was the concentrated occurrence period of warm summer.The cool and warm summer had the continuity and cluster occurrence characteristics.The frequency of the cool summer was more than the warm summer,and the abnormal degree of warm summer was stronger than the cool summer,and the influence scope was wide.The cool summer had 4 frequent occurrence centers,and the warm summer had 2 frequent occurrence centers,located at the mountain zone and the hills zone.Not only the cool summer was easy to appear,but also the warm summer was easy to happen in the west and the east of Heilongjiang province.Comparatively speaking,the cool summer was easier to appear in the Changbai Mountain area.展开更多
文摘利用丹东地区2011～2014年4个观测站逐月气温极值,分析了近4年最高、最低气温以及日较差的南北差异的四季变化特征,对于南北差异明显、差异变化较大的春季最高气温和冬季最低气温不同高低空天气形势进行对比分析。结果表明,丹东地区平均最高气温春季、夏季在凤城最高,丹东和宽甸的最高气温持平,东港最低;秋季和冬季东港最高,其次是丹东和凤城,宽甸最低。丹东地区平均最低气温为东港、丹东、凤城、宽甸自南向北递减,南北差异较小的为夏季,其次是春季、秋季,差异最大的是冬季。天气形势：春季最高气温北部比南部偏高5℃以上,高空多处于低涡底部或低压槽底,850 h Pa风场为偏西气流控制,地面为弱气压场控制;春季最高气温北部比南部偏低,高空多处于低涡后部或槽后,850 h Pa风场为偏北气流控制,地面为高压前部,地面有云或无云大风,风向为偏北风;冬季最低气温北部比南部偏低8℃以上,高空为涡后或槽后,850 h Pa风场为西北气流或偏北气流控制,地面辽宁北部为地形槽,长白山地区为高压场;冬季最低气温北部比南部略低,高空为涡前或槽前,850 h Pa为西南气流控制,地面受低压或高压后部偏南气流控制,云量较多。
文摘By analyzing the features of cold and warm summer of the northeast China during 1961-2002,the results showed the time from 1960s to late 1970s was the phase of cold summer took place,and the time from 1980s to early 1990s was the phase of cold and warm summer alternately took place.After the middle and late period of 1990s,it was the concentrated occurrence period of warm summer.The cool and warm summer had the continuity and cluster occurrence characteristics.The frequency of the cool summer was more than the warm summer,and the abnormal degree of warm summer was stronger than the cool summer,and the influence scope was wide.The cool summer had 4 frequent occurrence centers,and the warm summer had 2 frequent occurrence centers,located at the mountain zone and the hills zone.Not only the cool summer was easy to appear,but also the warm summer was easy to happen in the west and the east of Heilongjiang province.Comparatively speaking,the cool summer was easier to appear in the Changbai Mountain area.
