2008年:气候持续变暖,极端事件频发

The Year 2008:Global Warming Continued,Extreme Events Occurred Frequently

根据美国宇航局(NASA)的最新数据,2008年是自1880年以来全球第9个最暖的年份,至此,前10个最暖的年份都集中在最近12a(1997—2008年)里,全球气候变暖的趋势仍在持续。世界气象组织(WMO)的有关报告指出:北极的海冰面积在2008年融化期降至自1979年卫星测量以来的第2个最低点;同时,2008年极端天气气候事件频发,世界许多地方出现了洪灾、持续性严重干旱、冰雪风暴、热浪和寒潮等;拉尼娜现象在2月份呈峰值状态,以后逐渐减弱至近中性状态;南极臭氧洞进一步增大。

Since 1880, the year 2008 ranked as the 9th warmest year on record, and ten of the warmest years were all among the recent 12 years from 1997 to 2008, indicating a continuous trend of global warming. Arctic sea ice extent during the 2008 melt season dropped to its second-lowest level since satellite measurements began in 1979. Climate extremes, including devastating floods, severe and persistent droughts, snow storms, heatwaves and cold waves, were recorded in many parts of the world. La Nina conditions gradually weakened from their peak strength in February, and near-neutral conditions prevailed during the later half of 2008. Antarctic ozone hole in 2008 was larger than that in 2007.