Climate & Radiation Laboratory Seminar Series: Robert C. Levy 

Climate & Radiation Laboratory Seminar Series

Building 33, Room H114


20 years of Terra-MODIS aerosol retrievals: the start of an aerosol climate data record

On Feb 24, 2000, the MODerate-resolution Imaging Spectrometer (MODIS) sensor on the Terra satellite recorded its first image of Earth.  Last week marked the 20th anniversary of those images. ,Amazingly, MODIS has continued to be a workhorse for aerosol science, and the global community is applying that knowledge into creating the next generation of aerosol sensors and retrievals.  I will provide some of the theoretical aspects of the aerosol retrieval algorithm at launch, explain some of the improvements along with the way, and show some of the results we have with regard to the 20-year aerosol record.  Although this ground-breaking instrument may be approaching its end-of-life, we are porting the algorithms and products to low earth orbit (LEO) sensors such as Visible Infrared Imaging Radiometer Suite (VIIRS) on Suomi-NPP and the JPSS series, to advanced imagers in geostationary (GEO) orbit including Himawari and the GOES-R series, as well as to airborne imagers such as eMAS.  The goal is a global LEO/GEO synergy, however, due to differences in wavelengths, spatial resolution, and orbital sampling, there are numerous challenges to maintaining continuity.  At the same time, our group is trying new ways to improve the retrieval technique and product.  Finally, I was recently appointed to the GOES-R flight project science team, and I will share some of what I have learned. 


Seminar Series Coordinators