一、冷年和暖年的确定怎样来确定“冷年”和“暖年”或“冷冬”和“暖冬”呢?首先,从三十年代我国气温等级的多年变化(表1)看出:就我国全国范围来讲,1934年12月—1935年3月,气温等级均在3级以下,气温偏暖(1938年12月—1939年3月也属偏暖,但不如前者);相反,1935年12月—1936年3月,气温偏冷,连续几个月的气温等级皆在3级以上。其次,从大连——成山角断面(此断面割切北黄海冷水团)历年水温距平统计(表2)得知:1935年1—7月,该断面的水温皆为正距平;但1936年则不同,从1935年12月开始,至翌年10月,整个断面的水温系负距平或以负距平为主。第三,从渤海及黄海北部 First, cold and warm years to determine how to determine the “cold” and “warm” or “cold winter” and “warm winter”? First of all, from the thirty years of temperature changes in China over the years (Table 1) : As far as our nation is concerned, temperatures are below Grade 3 between December 1934 and March 1935. The temperature is warm (December 1938-March 1939 are also warm but not as good as the former); on the contrary From December 1935 to March 1936, the temperature was colder and the temperature levels for several months were all above Grade 3. Secondly, from the Dalian-Chengshanjiao section (this section cuts the northern Yellow Sea cold water mass) over the years, the water temperature anomaly statistics (Table 2) that: January-July 1935, the section of the water temperature are positive anomalies; but 1936 Year is different, starting from December 1935 to October next year, the entire section of the water temperature negative anomaly or negative anomaly based. Third, from the Bohai Sea and northern Yellow Sea