Under a contract with the National Trends Network, a national monitoring network sponsored by the United States Department of Agriculture, we operate a monitoring site on the south rim of North Ceta Canyon.  At Cañonceta we measure ground-level, atmospheric ammonia concentrations, wet deposition, and dry deposition. Why ammonia?  Mainly because in the presence of atmospheric moisture, ammonia can dissolve into that moisture and then react with other airborne species – mainly sulfate and nitrate – to form fine particles.  These particles scatter light pretty efficiently, so at high… Read More →