二十世纪初以来,全世界气候变化异常,导致了许多严重的自然灾害。七十年代以来,气候变异频率逐增,严重威胁着人类的生存条件,引起了世界各国科学家们的高度重视。许多科学家认为,“厄尔尼诺”(EINino),即太平洋东部热带地区海水异常增温现象,是气候变异的一个重要标志。中国科学院海洋研究所物理海洋学家胡 Abnormal climate changes around the world since the beginning of the twentieth century have led to many serious natural disasters. Since the 1970s, the increasing frequency of climate change has seriously threatened the living conditions of mankind and has drawn great attention from scientists all over the world. Many scientists believe that EINino, an abnormal warming of seawater in the tropical Pacific East, is an important indicator of climate change. Institute of Oceanology, Chinese Academy of Sciences physical oceanographer Hu