Study on the Structure of a Horizontal Shear Line over the Tibetan Plateau Based on CRA-Interim Datasets and Its Comparison with ERA-Interim Datasets     

姚秀萍  张硕  包晓红  师春香  刘景卫 《热带气象学报(英文版)》2020,26(4):483-494

The CRA-Interim trial production of the global atmospheric reanalysis for 10 years from 2007 to 2016 is carried out by the China Meteorological Administration (CMA) in 2017. The structural characteristics of the horizontal shear line over the Tibetan Plateau (TPHSL) based on the CRA-Interim datasets are examined by objectively identifying the shear line, and compared with the analysis results of the European Centre for Medium-Range Weather Forecasts (ECMWF)the European Center (ECMWF) reanalysis data (ERA-Interim). The case occurred at 18UTC on July 5, 2016. The results show that both of the ERA-Interim and CRA-Interim datasets can well reveal the circulation background and the dynamic and thermal structure characteristics of TPHSL, and they have shown some similar features. The middle and high latitudes at 500 hPa are characterized by500hPa present the circulation situation of  相似文献