长白山地区汛期降水对全球海表温度和海平面气压异常的响应

Response of rainy season precipitation in Changbai Mountain area to global sea surface temperature and sea level pressure anomaly

利用美国国家环境预报中心和国家大气研究中心(NCEP/NCAR)再分析海平面气压资料、美国国家海洋大气管理局(NOAA)重构的海表温度资料和中国国家气象信息中心整编的长白山地区20个气象站的降水资料,分析了长白山地区汛期降水年际和年代际波动对海表温度和海平面气压异常的滞后一个月的响应.结果表明:①年际波动对海表温度的响应并不明显,但年代际波动与西北太平洋海表温度显著正相关,与南印度洋和南大西洋海表温度显著负相关.②年际波动和年代际波动对海平面气压的响应都非常明显,但响应地区有差异,其中年际波动与南大西洋海平面气压显著正相关,年代际波动与中国大范围地区以及热带大西洋海域海平面气压显著负相关,与南极大部分地区海平面气压显著正相关.

Based on the reanalysis sea level pressure（SLP） data from American National Centers for Environ-ment Prediction/National Center for Atmospheric Research （NCEP/NCAR） ,the surface sea temperature （SST） data reconstructed by American National Oceanic and Atmospheric Administration （NOAA） and pre-cipitation data at 20 stations from China National Meteorological Information Center （NMIC） ,the response of inter-annual and inter-decadal fluctuations of rainy season precipitation in Changbai Mountain area to global SST and SLP are analyzed .The results show that ：（1） response of inter-annual fluctuation to SST anomaly is not obvious ,but inter-decadal fluctuation is positive correlation with Northwest Pacific and negative correlation with South India Ocean and south Atlantic significantly .（2） Response of inter-annual and inter-decadal fluctu-ation to SLP is very obvious ,but there is regional difference .Inter-annual fluctuation is positive correlation with south the Atlantic significantly .Inter-decadal fluctuation is negative correlation with Chinese large area and tropical Atlantic and positive correlation with most parts of the Antarctic significantly .