According to Surface Temperature Reconstructions for the Last 2,000 Years, there is also sufficient evidence from tree rings, boreholes , retreating glaciers , and other proxiesof past surface temperatures to say with a high level of confidence that the l
According to Surface Temperature Reconstructions for the Last 2,000 Years, there is also sufficient evidence from tree rings, boreholes , retreating glaciers , and other proxiesof past surface temperatures to say with a high level of confidence that the l
根据《过去200年地表温度重建》显示，同样有充足的证据，例如树木的年轮，地上开采石油及水源，冰川的融化，以及其他代表性象征，让人确信地表温度在20世纪地近几十年会比以前400年的温度有所上升。