Diurnal Cycle of Precipitation Based on CMORPH. Vernon E. Kousky, John E. Janowiak and Robert Joyce Climate Prediction Center, NOAA. CMORPH (CPC Morphing technique).
Vernon E. Kousky, John E. Janowiak
Climate Prediction Center, NOAA
Uses IR data along with passive microwave data to create global rainfall analyses (60N-60S) at high spatial and temporal resolution.
CMORPH uses IR only as a transport vehicle, i.e. IR data are NOT used to make estimates of rainfall when passive microwave data are not available.
The underlying assumption is that the error in using IR to transport precipitation features is less than the error in using IR to estimate precipitation.
For more information about CMORPH:
CMORPH over estimates precipitation by 40-50% over Brazil.
La Plata Basin
Rainfall develops along coast during the day and propagates westward through the night and into the next day.
Early morning maximum in rainfall over tropical Atlantic.
Convective rainfall systems start along east coast on day-1 propagate westward, reaching western Amazon on day-3.
Rainfall develops over Andes Mts. During late afternoon, then shifts eastward during the night and following day.
East Coast SA