%0 Dataset %T ERA5 Reanalysis Daily Upper-Air Dataset over the Upper Yangtze River Basin (2019) %J National Cryosphere Desert Data Center %I National Cryosphere Desert Data Center(www.ncdc.ac.cn) %U http://www.ncdc.ac.cn/portal/metadata/2a9d63d4-e25e-4b5b-8bc8-6b5d734da231 %W NCDC %A Wang Haoxian %K reanalysis data;high-altitude %X This study uses the fifth-generation atmospheric reanalysis data (ERA5) released by the European Center for Medium-Range Weather Forecasts (ECMWF). This dataset integrates global multi-source observations based on data assimilation technology and provides key variables with a spatial resolution of 0.25°×0.25° and a temporal resolution of 0.25 ° on the daily scale. It is used to analyze the background circulation corresponding to flood seasons in the basin.