摘要
利用北京１９５８－１９８９年共３２年逐日晴空直接辐射资料，计算了大气气溶胶浑浊度系数β值，并结合北京市场用煤资料、天气状况资料和火山爆发资料对β值的年变化及多年变化特征及其成因进行了分析和初步研究。结果表明，北京地区的β值在春季最大，秋末初冬最小；１９５８－１９７７年，北京地区β值变化缓慢，维持在０．０８－０．１２之间，１９７８年以后，β值有显著增大趋势；一般情况下，非采暖期的β值反而大于采暖期的β值．
Based on the data of daily direct solar radiation during clear days from 1958 to 1989over Beijing,the atmospheric aerosol turbidity parameters βover this area are calculat-ed.And by combining the results above with the data of coal consumption of the mar-ket,weather conditions and volcanic eruptions,the features of annual and interannualchanges of βand their causes are estimated. The results show that the maximum values of βoccur in spring and the minimum inthe season between autumn and winter;the values of βfrom 1958 to 1977 changed slow-ly and maintained a range of values between 0.08 and 0.12; after 1978 the values in-creased rapidly. And generally,the values of βin the heating seasons are smaller thanthat in the otber time.
出处
《应用气象学报》
CSCD
北大核心
1994年第1期11-18,共8页
Journal of Applied Meteorological Science
