Version 7 revision 00 was active from 26 July 2013 to 24 April 2016.
Latest version: RSS Monthly 1-deg Total Precipitable Water V7r01 is available as of 25 April 2016.

The RSS Monthly 1-deg Microwave Total Precipitable Water netCDF V7R00 dataset provides 1 degree gridded data for the monthly means of total precipitable water, a 20 year climatology file, and a cumulative file with data from 1988 to the current month. This includes the anomalies for global mean precipitable water over Ice Free Oceans (60S to 60N) and the tropical mean for 20S to 20N. Satellite information used in calculating the means is included for the SSMI (8, 10, 11, 13, 14, 15) and SSMIS (16, 17), AQUA10 and Windsat(Coriolis). This dataset contains both netCDF3 and netCDF4 formatted files.

Please include the following citation in your publications:

Mears, Carl A., Deborah K. Smith, Kyle Hilburn and Lucrezia Ricciardulli. 2013. RSS Monthly 1-deg Microwave Total Precipitable Water netCDF V7R00 [indicate subset used]. Dataset available online from the NASA Global Hydrology Resource Center DAAC, Huntsville, Alabama, U.S.A. DOI:
Click here for the citation in RIS format.

General Characteristics

Publication date: 2013-07-26
Version: 7
Collections: DISCOVER MEaSUREs Products
Projects: DISCOVER
Platforms: AQUA, Coriolis, DMSP 5D-2/F10, DMSP 5D-2/F11, DMSP 5D-2/F13, DMSP 5D-2/F14, DMSP 5D-2/F15, DMSP 5D-2/F8, DMSP 5D-3/F16, DMSP 5D-3/F17
Processing level: 3
Format: NETCDF


[coverage map]
Red dots or areas indicate coverage range.


Spatial resolution: 1 degree grid
North boundary: 60°
West boundary: -180°
East boundary: 180°
South boundary: -60°
Temporal resolution: MONTHLY
Start date: 1988-01-01
Stop date: 2016-03-31


Retired Dataset: Retired data available on request only
Browse images illustrate the nature and coverage of the data
The guide document contains detailed information about the dataset
PI Documentation:
TPW data description
PI Documentation:
SSM/I Rain Retrievals within a Unified All-Weather Ocean Algorithm May 1, 1998
PI Documentation:
Ocean Algorithm for special sensor microwave/imager
Algorithm Information:
Algorithm Theoretical Basis Document (ATBD) Version 2 AMSR Ocean Algorithm
Algorithm Information:
Supplement 1 Algorithm Theoretical Basis Document for AMSR-E Ocean Algorithms
for V7r00 :
Digital Object Identifier
Citing data:
Instructions for citing GHRC data.


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