GPM Reference Concept

Core Satellite

• Dual Frequency Radar

• Multi-frequency Radiometer

• H2-A Launch

• TRMM-like Spacecraft

• Non-Sun Synchronous Orbit

• ~65° Inclination

• ~400 - 500 km Altitude

• ~4 km Horizontal Resolution (Maximum)

• 250 m Vertical Resolution

Constellation Satellites

• Multiple Satellites with Microwave Radiometers

• Aggregate Revisit Time,

3 Hour goal

• Sun-Synchronous Polar Orbits

• ~600 km Altitude

OBJECTIVE: Understand the Horizontal and Vertical Structure of Rainfall and Its Microphysical Element. Provide Training for Constellation Radiometers.

OBJECTIVE: Provide Enough Sampling to Reduce Uncertainty in Short-term Rainfall Accumulations. Extend Scientific and Societal Applications.

Global Precipitation Processing Center

• Capable of Producing Global Precip Data Products as Defined by GPM Partners

Precipitation Validation Sites

• Global Ground Based Rain Measurement

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