National Atmospheric Deposition Program

The NADP monitors precipitation chemistry from numerous sites around the United States. The NADP consists of 5 networks: National Trends Network, Mercury Deposition Network, Atmospheric Integrated Research Monitoring Network, Atmospheric Mercury Network, and Ammonia Monitoring Network. Data is provided by each network.

NADP（国家大气降水监测计划）对美国各地多个监测站点进行降水化学成分的监测。该计划由五个网络组成：国家趋势网络、汞沉降网络、大气综合研究监测网络、大气汞网络以及氨监测网络。各网络提供数据支持。