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How can I assess and interpret the ProbabilityLiquidPhase and rain/snow/precipitation data fields in the GeoTIFF "value-added" IMERG products?

The GeoTIFF "value-added" products have both the ProbabilityLiquidPhase and a split-out of the precipitation into liquid and solid (note—both are liquid equivalent). The documentation is at https://pps.gsfc.nasa.gov/Documents/README.GIS.pdf and quoting from p. 14-15:

Precipitation Estimation from Remotely Sensed Imagery Using an Artificial Neural Network Cloud Classification System

Submitted by LisaN on
Publication Year
Authors
Hong, Y., K.-L. Hsu, S. Sorooshian, and X.g Gao
Journal
J. Appl. Meteor. Climatol.
Volume
43(12)
Page Numbers
1834–1853
DOI
10.1175/JAM2173.1
Mission Affiliation
GPM
Major Category
GPM

Mathematical–Physical Framework for Retrieval of Rain DSD Properties from Dual-Frequency Ku–Ka-Band Satellite Radar

Submitted by LisaN on
Publication Year
Authors
Kuo, K.-S., E. A. Smith, Z. Haddad, E. Im, T. Iguchi, and A. Mugnai
Journal
J. Atmos. Sci.
Volume
61(19)
Page Numbers
2349–2369
DOI
10.1175/1520-0469(2004)061<2349:MFFROR>2.0.CO;2
Mission Affiliation
GPM
Major Category
GPM

A Parameterization of the Microwave Land Surface Emissivity Between 19 and 100 GHz, Anchored to Satellite-Derived Estimates

Submitted by LisaN on
Publication Year
Authors
Prigent, C., E. Jaumouille, F. Chevallier, and F. Aires
Journal
IEEE Transactions on Geoscience and Remote Sensing
Volume
46(2)
Page Numbers
344-352
DOI
10.1109/TGRS.2007.908881
Mission Affiliation
GPM
Major Category
GPM
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