Beginning in January of 2017, ATOC Skywatch Observatory became part of the National Atmospheric Deposition Program- National Trends Network. Weekly precipitation samples are collected by Boulder Creek Critical Zone field technicians and sent to the National Trends Network laboratory for analysis of calcium, magnesium, sodium, potassium, ammonium, chloride, bromide, nitrate, and sulfate ions as well as pH and specific conductance.
|Atmospheric nitrogen measurements in the ATOC Skywatch Observatory are coordinated by local USGS research scientists as part of an urban area monitoring network. Employing several different sampling methods, both wet and dry deposition of nitrogen species are recorded for a USGS sponsored project, Network for Urban Atmospheric Nitrogen Chemistry. The multiyear study brings together researchers from the USGS, University of Colorado, Colorado State University, and Texas A&M to observe atmospheric nitrogen species in the Boulder/Denver region.|
|Through the USGS NUANC study, Skywatch is hosting a CSU, Department of Atmospheric Science passive ammonia monitor for their Atmospheric Chemistry/Air Quality Program.|
|ATOC owes a special thank you to the field technicans at the Boulder Creek Critical Zone Observatory. Support for weekly NADP/NTN precipitation sample collection and ammonia monitoring is provided by the Boulder Creek CZO.|
|Stable water isotope measurements have been conducted at Skywatch Observatory since 2009. Monthly water samples are submitted to the International Atomic Energy Agency Global Network of Isotopes in Precipitation program for analysis and entry into the database.|