CHOMPS: CICS High-Resolution Optimally Interpolated Microwave Precipitation from Satellites

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CHOMPS: CICS High-Resolution Optimally Interpolated Microwave Precipitation from Satellites
Main content

CHOMPS utilizes all available passive microwave satellite estimates to develop improved global daily rainfall time series. No IR values are used. Satellite sources include SSM/I, AMSU, AMSR-E and TRMM. The most recent/accurate and consistent retrieval schemes have been used in the creation of the individual precipitation estimates. The original data are binned and optimal interpolation is used to merge the data and reduce errors. There are two data sets versions. One includes all passive satellite sources (CHOMPS) and one that does not include data from the AMSU sensor (CHOMPS-NoA). This was done to account for possible discontinuities when the AMSU instrument was added.

Key Strengths

Key Strengths

Uses all available passive microwave satellite estimates and most recent/accurate and consistent retrieval schemes

Data from multiple satellites binned to reduce diurnal sampling biases and optimal interpolation used to reduce random errors. Error estimates provided.

High temporal and spatial resolution

Please cite data sources, following the data providers' instructions
Suggested Data Citation
Dataset DOIs
None
Hosted Climate Index Files
None
Data Access
Usage Restrictions
None

Key Figures

Table showing source of data use. [SOURCE: http://www.atmos.umd.edu/~rjoseph/CHOMPS/TableSourceData.htm]

CHOMPS precipitation estimates for January 1, 2000. [Climate Data Guide; D. Shea]

Other Information

Earth system components and main variables
Dataset collections
None

Years of record
to
Data time period extended
No, data set not being extended
Timestep
Daily
Domain
Formats:
Input Data

multiple satellite microwave sensors

Vertical Levels:
Missing Data Flag
Missing data present
Ocean or Land
Ocean & Land
Spatial Resolution

0.25x0.25

Model Resolution (reanalysis)
None
Data Assimilation Method
None
Model Vintage (reanalysis)
None