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Microwave Science Header - Artist Concept of a MWSCI Instrument Scanning the Earth's Surface

Microwave sounders have unique capabilities that could allow them to give us better tropical cyclone observations. For example, current capabilities of microwave instruments, while impressive, only give us sparse samples or show us only part of a storm's microphysics (like only cloud tops). Model data too can often be deficient or give incomplete observations of a storm. Microwave sounders such as GeoSTAR could improve our understanding of sever storms by giving us more data or improved data products.

Science question: How can we improve hurricane intensity observations?
  • Continuous monitoring
  • Measure warm core anomaly
  • Measure rain rate, convective intensity
  • Infer all-weather wind vector profiles

Strong correlation between microwave brightness temperature anomaly and pressure anomaly in hurricane core method using AMSU-A microwave sounder data developed by U. Wisconsin and NRL

Science question: How can we improve understanding of storm dynamics?
  • GeoSTAR will mimic precipitation/cloud radar
  • Use to diagnose/fix model deficiencies
  • Initialize with current, complete state variables
  • Re-initialize with current observations
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