TMI Instrument

Measurements and Applications

Measures rainfall rates over oceans (less reliable over land), combined rainfall structure and surface rainfall rates with associated latent heating. Used to produce monthly total rainfall maps over oceans.

Instrument Summary

Full Name
TRMM Microwave Imager
Status
No longer operational
Instrument Agencies
Maturity
Instrument Type
Imaging multi-spectral radiometers (passive microwave)
Geometry
Instrument Technology
Multi-purpose imaging MW radiometer
Sampling
Imaging
Data Access
Open Access
Data Format
HDF

Performance Summary

Resolution
Vertical: 2.5 km approx; Horizontal: 18 km
Swath
790 km
Accuracy
Liquid water: 3 mg/cm3, Humidity: 3 mg/cm3, Ocean wind speed: 1.5 m/s
Waveband
Microwave: 10.7 GHz, 19.4 GHz, 21.3 GHz, 37 GHz, and 85.5 GHz
MW (~0.1 cm - ~100 cm)

Instrument Missions

TRMM - Tropical Rainfall Measuring Mission (1997 - 2015)

Instrument Measurements