AIRMoN Cloud Banner

Atmospheric Integrated Research Monitoring Network

AIRMoN joined NADP in 1992 and currently has 7 sites.

Samples are collected daily within 24 hours of the start of precipitation, often providing data for all or part of a single storm. Single-storm data facilitate studies of atmospheric processes and the development and testing of computer simulations of these processes. Making data available for these studies is a principal AIRMoN goal.

The AIRMoN sites are equipped with the same wet-only deposition collector and precipitation gage used at NADP's National Trends Network (NTN) sites. Each site also has a National Weather Service standard gage for reporting storm total precipitation. Samples are refrigerated after collection and are sent in chilled insulated shipping containers to the Central Analytical Laboratory (CAL), where they are kept refrigerated until analysis. Refrigeration retards chemical changes. Chemical analyses and data screening procedures for AIRMoN and NTN are similar, although low-volume AIRMoN samples are not diluted to accommodate a complete analysis, as is standard NTN procedure. Another difference is that during the data review, the CAL assigns a quality rating code before sending AIRMoN data to the NADP Program Office for final checks and posting on the Web site.