Extending the long-term EOS record of NO2 and SO2 with SNPP OMPS Nadir Mapper

Abstract:

SNPP/OMPS-NM has been the only operational UV satellite instrument providing contiguous daily global coverage at low- to mid-latitudes since early 2012. While it is designed primarily for monitoring total ozone, SNPP/OMPS-NM also provides high-quality measurements of additional trace gases, such as NO₂ and SO₂ in the troposphere. In this presentation, we describe the standard trace-gas products that are being produced from SNPP/OMPS at NASA Ozone SIPS, and the algorithms and techniques that we have developed to achieve and ensure high product quality. We show results to demonstrate that OMPS-NM is providing sensitive measurements of air pollutants over the globe, with sensitivities similar to those achieved with Aura/OMI. The NO2 and SO2 data from SNPP/OMPS have sufficient quality to continue and extend NASA’s long-term EOS NO2 and SO2 data records, and can be used to monitor daily air pollution and identify anthropogenic sources of NO2 and SO2.