CAM3模拟输出的降水氧同位素数据集(1950-2020年)
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我们使用大气环流模型CAM3,嵌入水汽标记和稳定水同位素模块,以追踪水汽从源区的蒸发到中国北方(32-42°N,102-120°E)的降水过程,而不受追踪水汽路径时间限制。根据中国北方可降水量划分8个水汽源区,包括:高纬陆地(HLA), 低纬陆地(LLA),中国北方(NC), 中国南方(SC), 北大西洋和地中海(MS&NA), 太平洋(PO), 南海(SCS)以及北印度洋(NIO)。研究表明PO、NIO以及LLA是中国北方夏季主要水汽来源,并影响北方降水氧同位素组成。
We employed the General Circulation Model CAM3, which was embedded with water vapor tracers and a stable water isotope module, to track the entire transport process of water vapor from evaporation at source regions to precipitation over northern China (32–42°N, 102–120°E) without any temporal constraints on the traced water vapor pathways. Eight water vapor source regions were classified based on the precipitable water over northern China, including: High-Latitude Land (HLA), Low-Latitude Land (LLA), Northern China (NC), Southern China (SC), North Atlantic and Mediterranean Sea (MS&NA), Pacific Ocean (PO), South China Sea (SCS), and Northern Indian Ocean (NIO). Studies have demonstrated that PO, NIO and LLA are the primary water vapor sources for summer precipitation over northern China, and they also influence the oxygen isotope composition of precipitation in this region.




