火山爆发对新疆太阳辐射和气温的影响

EFFECT OF VOLCANIC ERUPTION ON SOLAR RADIATION AND AIR TEMPERATURE ON XINJIANG

本文利用1961－1993年新疆16个气象站气温资料和8个日射站的辐射资料，分析了火山爆发指数VEI≥4级的9次强火山爆发对新疆太阳直接辐射和气温的影响。分析结果表明，强火山爆发后的1—2年中，新疆的太阳直接辐射有明显减少，年平均气温和季平均气温都有不同程度的下降，北疆秋季气温下降的一致性和幅度最明显。同时分析证实了1992－1993年新疆夏、秋季的低温与1991年6月菲律宾VEI6级的Pinatubo火山强烈喷发密切相关。

The effect of 9 volcanic eruptions with VEI(volcanic eruption index) ≥ 4 on solar radia tion and air temperature in Xinjiang is analyzed based on the data of air timperature from 16 meteorological stations and the data of solar radiation from 8 solar radiation stations in Xin jiang. The results show that, in a period for 1 to 2 years after a volcanic eruption,the solar ra diation decreased obviously, both of the annual and seasonal air temperatures decreased in varying degrees. The decreasing unity and range of autumnal air temperature were the most obvicus in Northern Xinjiang. Moreover,the analyses verify that the low temperature in Xin jiang in the summers and autumns of 1992-1995 was closely related to the violent volcanic eruption in the Philippines in June, 1991.