中国不同相态降水（降雪、雨夹雪和降雨）及其湿球温度阈值格点数据集（1961-2016）

不同相态降水（降雪、雨夹雪和降雨）对地表水循环和能量收支产生不同性质影响。因此，对不同相态降水进行区分至关重要，特别是在气候变化背景下。基于Ding et al.（2014）提出的不同相态降水分离参数化方案和基于观测的逐日格点数据集（CN05.1），以湿球温度、相对湿度、地表气压和高程数据作为输入，我们生成了一套1961-2016年期间中国区域不同相态降水（降雪、雨夹雪和降雨）及其湿球温度阈值的逐日格点数据集，空间分辨率为0.25°。在此基础上，进一步计算了逐年降雪、雨夹雪和降雨总量。该数据可为冰冻圈科学、水文学、生态学和气候变化相关研究提供基础数据。

Precipitation in different phases (snowfall, sleet and rainfall) exerts distinct impacts on surface water cycle and energy budget. Therefore, distinguishing between different precipitation phases is critically important, particularly against the backdrop of climate change. Leveraging the parameterization scheme for separating precipitation phases proposed by Ding et al. (2014) and the observation-based daily gridded dataset CN05.1, and taking wet-bulb temperature, relative humidity, surface air pressure and elevation data as inputs, we developed a daily gridded dataset covering precipitation in three phases (snowfall, sleet and rainfall) and their corresponding wet-bulb temperature thresholds across China for the period 1961–2016, with a spatial resolution of 0.25°. On this foundation, we further computed the annual total amounts of snowfall, sleet and rainfall. This dataset can serve as fundamental data for research in cryospheric science, hydrology, ecology and climate change-related studies.

搜集汇总

背景与挑战

背景概述

该数据集是中国区域1961-2016年逐日格点数据，空间分辨率为0.25°，基于湿球温度等参数区分降雪、雨夹雪和降雨三种相态降水，并提供了相应的温度阈值。数据以.nc格式存储，包含日尺度和年尺度文件，适用于冰冻圈科学、水文学和气候变化研究，总大小为5.20 GB。