从MWP看20世纪全球变暖

气候变暖已引起全球的广泛关注，正确的认识当前的气候变化已成为亟待解决的问题．目前的主流观点虽然认为近几十年的升温是由人类活动导致的，但许多学者发现MWP时期的气温与现代相当甚至更暖．结合国内外学者对MWP的研究，对比了MWP与现代暖期的温暖程度，指出20世纪暖期并不是过去千年最暖的世纪，现代升温可能只是气候冷暖波动中的一次自然现象，是uA过后的正常回暖．因此对MWP的认识对于人们深入认识当前全球变暖的性质和原因，具有十分重要的意义．

SEEING THE 20th CENTURY WARMING FORM TEMPERATURE CHANGES OF MWP

Global warming has already caused extensive concern, it is urgent for us to understand the 21~(th) century warming correctly now.Though so many people think that the climate warming of recent years is caused by human activity,some scholars found that the temperature during MWP was equivalent or even warmer than that of now.According to domestic and international scholars' studies on MWP,warm degree of MWP was compared with that of nowadays in this review and it was proved that the 20~(th) century was not the warmest century in the past thousand years,temperature rising at present maybe a natural phenomena in the climate fluctuation,and is normal after LIA.Therefore,correctly understanding of MWP is important to recognize global warming,and has key significance to the establishment of the climate policy too.