【摘要】 利用NCEP高度场、风场及OLR资料,分析了春季赤道东太平洋海温异常对东亚大气环流春夏季节演变的影响,结果表明春季赤道东太平洋海温偏暖年,南海-菲律宾附近出现异常反气旋,西太平详副高偏强偏西（副高5月占据南海）,南海季风爆发迟;而春季海温偏冷年,南海-菲律宾附近出现异常气旋,西太平洋副高偏弱偏东（副高5月东移出南海）,南海季风爆发早。数值试验说明春季赤道东太平洋海温异常不仅对东亚大气环流春季季节变化有明显影响,而且此影响可持续到夏季。更多还原

【Abstract】 On the basis of NCEP height, wind and OLR data, the influence of spring equatorial eastern Pacific SSTA on the seasonal change from spring to summer of eastern Asian circulation is studied. Results show that related to the warm (cold) spring SSTA in the equatorial eastern Pacific, the abnormal anticyclone (cyclone) circulation emerges around the South China Sea and the Philippines, the strong (weak) west Pacific subtropical high locates to the west (east) of its normal position, which induces to the late (early) burst of the South China Sea monsoon. The numerical simulations show that the remarkable influence of spring SSTA in the equatorial eastern Pacific on the spring seasonal change of eastern Asian circulation will continue to summer.更多还原