Annual Precipitation

These data are annual summaries of precipitation derived from models of historical weather observations. These data were downloaded from the National Center for Environmental Information. . Total annual precipitation is the sum of all water (in the form of rain, snow, or ice) that fell within a calendar year.本数据集为基于历史气象观测数据模型生成的降水年度汇总资料。本次数据集下载自美国国家环境信息中心（National Center for Environmental Information）。年度总降水量指某一公历年度内所有以降雨、降雪或固态冰形式降落的水体总量。