华东地区降水时频变化特征与ENSO关系

利用Morlet小波变换方法分析了近56a来华东地区降水、气温变化以及ENSO的变化，结果表明，华东地区的降水、温度、海温(ΔSST)以及南方涛动指数(ΔSOI)的月距平序列中都存在多时间层次结构，并且各时间尺度周期分量的强度是不同的。同时又采用交叉小波变换方法，分别分析研究了ΔR、ΔT与ΔSST、ΔSOI相关关系，发现华东地区降水与ENSO在准2～4a周期变化上呈正相关关系，在年代际和8a以上年际间呈正负有规律交替且以正相关为主，而气温与ENSO存在多时间尺度特征。

Relationship between ENSO and the Precipitation Change in Eastern China

To determine the major components of aerosols in the Bosteng Lake area in Xinjiang so as to reduce the errors in radiative transfer calculations and remote sensing resulting from the mistake of the aerosol model, a method to determine the atmospheric aerosol model based on the spectral relationships of aerosol optical depth(AOD) was presented in this paper. The AOD was computed using 6S radiative transfer model at multiple spectral bands for continental, desert, custom models for components volume percentage and two dynamic models. Then the most suitable atmospheric aerosol model among the several models was determined by minimizing the standard deviation between the observed values and computed values. This method was applied to the data from the sun-photometer measurements in the Bosteng Lake area in 2010. The Results showed that the region in the period of measurements was close to the custom models with dust-like component percentage more than 88%.