El Chichón火山的太阳辐射效应

SOLAR RADIATIVE EFFECT OF THE EL CHICHÓN VOLCANIC ERUPTION

中文摘要:

      利用1964—1983年冬季无云条件下的太阳辐射资料分析发现,1982年3月底至4月初,墨西哥El Chichón(厄·奇冲)火山爆发后,对到达地球表面的太阳直接辐射、散射辐射以及总辐射产生了显著和持续的影响。这种影响特征与近百年来的几次巨大火山爆发所引起的辐射效应是一致的,这主要是因为火山气溶胶对太阳辐射的强大反向散射和吸收作用,改变了大气透明度所造成的。

英文摘要:

      Using the data of the clear-sky solar radiation observed between winter 1964 to winter 1983,it is shown from the analysis that significant and sustained change of the direct radiation, scattered radiation and total radiation in China are caused by the El Chichón volcanic eruption between 28 March and 4 April 1982.The Effect feature is found to be consistent with the radiative effect caused by a few great volcanic in last 100 years. The primary cause was the changing of the atmospheric transparency as a result of the strongly back scattering and absorption of radiation by the volcanic aerosol.