Climate Data

CMORPH (CPC MORPHing technique): High resolution precipitation (60S-60N)

"CMORPH (CPC MORPHing technique) produces global precipitation analyses at very high spatial and temporal resolution. This technique uses precipitation estimates that have been derived from low orbiter satellite microwave observations exclusively, and whose features are transported via spatial propagation information that is obtained entirely from geostationary satellite IR data." (source: RDA abstract on CMORPH).

Key Strengths:

  • High temporal and spatial resolution

Technical Notes

The precipitation estimates derived from the passive microwaves aboard the DMSP 13, 14 & 15 (SSM/I), the NOAA-15, 16, 17 & 18 (AMSU-B), and AMSR-E and TMI aboard NASA's Aqua and TRMM spacecraft, respectively. These estimates are generated by algorithms of Ferraro (1997) for SSM/I, Ferraro et al. (2000) for AMSU-B and Kummerow et al. (2001) for TMI. Note that this technique is not a precipitation estimation algorithm but a means by which estimates from existing microwave rainfall algorithms can be combined.

Years of Record

2002/12 to 2017/10
temporal metadataID:



Sub-daily | Daily

Data Time Period Extended?

yes, data set is extended


Spatial Resolution


Missing Data Flag

missing data present

Vertical Levels

Input Data

satellite microwave

Earth system components and main variables

Key Figures

Click the thumbnails to view larger sizes



Climate Data Guide Image: CMORPH Sample CMORPH (0.25 x 0.25) without (top) and with (bottom) advection for June 20, 2009. [Climate Data Guide; D.Shea]

Cite this page

National Center for Atmospheric Research Staff (Eds). Last modified 06 Oct 2017. "The Climate Data Guide: CMORPH (CPC MORPHing technique): High resolution precipitation (60S-60N)." Retrieved from

Acknowledgement of any material taken from this page is appreciated. On behalf of experts who have contributed data, advice, and/or figures, please cite their work as well.