Equipment Modernization
NTN Collector
At the NADP Executive Committee meeting on October 19th, 2010, a new wet-deposition collector was accepted for use in the NADP/National Trends Network for collection of precipitation chemistry samples.
The new collector is the N-CON Systems Co., Inc.’s Atmospheric Deposition Sampler (Model 00-120-2, ADS/NTN).
This new sampler was tested following the NADP requirements and was deemed to have met these standards and to
fulfill the needs of the network. Therefore N-CON Systems ADS/NTN sampler is now acceptable for use in collecting
wet deposition samples.
Rain gages and Wind Screens
With a goal of maintaining an efficient measurement system that meets the data and information needs of
scientists, policy-makers, educators, and the public, NADP committees in 2006 passed two resolutions requiring
equipment changes for all NTN, MDN, and AIRMoN sites. The first resolution requires all sites to install
an approved electronic precipitation gage by the end of 2011. The second resolution requires those sites receiving at
least 20 percent of their annual precipitation as snow to install an Alter-type wind shield.
