全球古气候数值模拟数据集（9000年前）

本研究用大气物理所的全球大气环流模式模拟了9000年前一月份和七月份的古气候，得出：北半球夏季由于地球轨道参数的变化引起的比现在多7%的太阳辐射使得温度升高了，尤其是高纬地区，海陆对比的加强又增强了季风，季风区域降水增加了；而冬季因为太阳辐射在北半球减少了7%，温度变低了。这些结果与现有的古气候证据相一致。本工作得到了与古气候证据和其它模拟结果相吻合的9000年前的气候，从而证实了地球轨道参数的变化确可引起气候很大的季节、区域乃至全球变化；也说明了IAP GCM在模拟和预测与现在完全不同的气候方面具有潜力。

This study simulated the paleoclimates of January and July 9000 years ago using the Global Atmospheric Circulation Model (GCM) from the Institute of Atmospheric Physics (IAP). The results show that in the Northern Hemisphere summer, the 7% higher solar radiation caused by changes in Earth's orbital parameters led to elevated temperatures, especially in high-latitude regions. The enhanced land-sea contrast further strengthened the monsoon, resulting in increased precipitation in monsoon regions. In winter, the 7% reduction in solar radiation over the Northern Hemisphere caused lower temperatures. These results are consistent with existing paleoclimatic evidence. This work obtained paleoclimatic states 9000 years ago that match both paleoclimatic evidence and other simulation results, confirming that changes in Earth's orbital parameters can indeed trigger significant climatic changes across seasons, regions and even the global scale. It also demonstrates that the IAP GCM has potential in simulating and predicting climates that are completely different from the present-day climate.