1998年全球重大气候事件概述

１９９８年，世界大部地区继续偏暖，全球平均气温再创历史新纪录。由于受厄尔尼诺事件和拉尼娜现象的影响，许多地区气候发生异常，出现了大范围的暴雨洪水和高温干旱天气，中国、孟加拉国和中美洲诸国遭受世纪性洪涝灾害，全球经济损失超过历史最高纪录。冬季，全球大部地区气候异常暖和；年初，北美大陆遭受暴风雪袭击；春季，墨西哥、印度尼西亚因干旱引发严重的森林大火；入夏之后，热浪天气席卷印度、欧洲各国，美国许多地区受到系列龙卷风的袭击；初秋，欧洲大陆又出现了寒流天气，加勒比海地区秋季连遭强飓风袭击

Significant Climate Events in the World during 1998

The global mean surface air temperature continued to be above normal in 1998 and reached to the highest record.The El Nino and the following La Nina events have exerted significant effects on the global climate.Extreme climate events such as floods,storms,hot weather and droughts frequently occurred in different areas.All these disasters caused great economic loss all over the world. During the winter in 1998,the air temperatures were obviously warmer than the normal in most regions of the world and severe snowstorms were experienced in the North America.In spring,there were many forest fires caused by drought in Mexico and Indonesia.Persistent high air temperatures appeared in Indian and Europe.Tornadoes hit many areas in America during summer.The cold wave attacked Europe in the earlier fall.Severe hurricanes hit Caribbean in the later fall.