STAR Joint Polar Satellite System Algorithms & Data Products website

Advanced Technology Microwave Sounder (ATMS)


The Advanced Technology Microwave Sounder (ATMS) operates in conjunction with the CrIS to profile atmospheric temperature and moisture. Higher (spatial, temporal and spectral) resolution and more accurate sounding data from CrIS and ATMS will support continuing advances in data assimilation systems and NWP models to improve short- to medium-range weather forecasts.

ATMS consists of a microwave radiometer that:

  • Measures microwave radiances at 22 channels (23.8 GHz to 183.3 GHz)
  • Measures total-power, two-point external calibration


  • ATMS is the functional-equivalent follow-on to AMSU-A (Advanced Microwave Sounding Unit) and MHS (Microwave Humidity Sounder) with improved sampling and coverage

Provides 3 EDRs with CrIS:

  • Atmospheric Vertical Moisture Profile
  • Atmospheric Vertical Temperature Profile
  • Pressure (Surface/Profile)

ATMS instrument