This is a partial list of NOAA GML GRAD research projects.

• Mauna Loa apparent transmission
• Ultraviolet Radiation
• Mauna Loa Spectral UV
• UV-B Broadband
• Arctic UV-B
• Surface Radiation (SURFRAD) Network
• Central UV Calibration Facility
• NOAA/EPA UV-Ozone Brewer (NEUBrew) Network
• Solar Radiation Calibration Facility (SRF)
• Umkehr Ozone Profile Retrievals
• Stratospheric Aerosol Climatology at UV Wavelengths
• Aerosol optical depth
• Long-term trends
• Instrument development
• Model/Observation comparisons
• Volcanic climate effects
• Polar regions
• Polar Optical Depth
  • Monitoring Aerosol Optical Depth at GML Polar Observatories
  • Asian Dust at Barrow, Alaska
  • Monitoring Aerosol Optical Depth during the Arctic night at Barrow
• Barrow Radiation Climatology
• Barrow Snowmelt Date
• Pinatubo Effects in the Arctic
• Western Arctic Climate Change
• Characterization and Radiative Impacts of Arctic Aerosols
• Clouds and Earth's Radiant Energy Satellite (CERES) Validation
• Global Atmospheric Watch (GAW)
• Baseline Surface Radiation Network (BSRN)
• Excess Cloud Absorption
• ARM collaborations