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利用最新的太阳辐射变化资料和火山灰记录通过气候模式的模拟试验来探讨小冰期气候的形成因子 ,并揭示其动力学机制 .模拟结果较好地反映了在太阳辐射和火山灰作用下典型小冰期东亚地区的温度和降水变化 .主要结论是 :在小冰期典型强迫条件下 ,欧亚大陆年平均温度普遍降低 ,且具有明显的区域差异 ,高纬度降温幅度大于低纬度 ,冬季降温幅度大于夏季 .我国长江流域以北的广大地区的降温幅度在 0 .2 - 0 .4℃之间 .不同季风区对火山灰和太阳辐射变化具有不同的响应 .东南季风控制的地区 (如我国的华东、华南地区 )降水明显减少 ,年平均减少幅度在 0 .5 - 1.5mm/d之间 ,西风和西南季风控制的广大地区降水几乎持平或略增 ,最大年均增幅小于0 .5mm/d .这与历史证据和自然记录资料是一致的
Using the latest solar radiation data and volcanic ash records to simulate the climatic model to explore the formation factors of the Little Ice Age climate and reveal its dynamic mechanism, the simulation results better reflect the effects of solar radiation and volcanic ash in the typical small glacial East Asia The main conclusion is that under the typical forcing conditions in the small ice age, the annual average temperature in Eurasia generally decreases and there are obvious regional differences, the temperature drop in high latitudes is greater than that in low latitudes, and the temperature drop in winter is greater than in summer. The range of temperature drop across a large area north of the Yangtze River valley is between 0.2-2.4 ° C. Different monsoon regions have different responses to changes in volcanic ash and solar radiation. Areas controlled by the southeastern monsoon (eg, eastern China and southern China) Precipitation decreased obviously, the annual average decrease ranged from 0.5 to 1.5mm / d. The precipitation in the vast areas controlled by the westerly and southwest monsoon was almost the same or slightly increased, the maximum annual average increase was less than 0.5mm / d. This is consistent with the historical evidence And the natural record of the data is consistent