Description
Version 07 is the current version of the data set. Older versions are no longer available and have been superseded by the current version.
Consistent rainfall retrievals from each instrument mandate the basic sensor radiance measurements (brightness temperature, Tb) to be consistently inter-calibrated.
Fundamental to this concept is the existence of the GPM Microwave Imager (GMI), a conically scanning multifrequency radiometer in non-sun-synchronous orbit, which serves as a radiometric transfer standard for the other passive microwave sensors on cooperative (polar orbiting) constellation satellites. This GPM inter-satellite calibration process is known as XCAL.
GMIBASEXCAL is the standard GMI calibration product with reduced precision of all physical fields. It consists of one full orbit with no overlaps to other orbits in the production although up to 200 overlap scans may be used for multi-scan calibration in the process.
This GPM GMI product contains "GMI Antenna Temperatures", and is written as a multi-Swath Structure. Swath S1 has channels 1-9: 10V 10H 19V 19H 23V 37V 37H 89V 89H. Swath S2 has channels 10-13: 166V 166H 183+/-3V 183+/-8V. S3 S4 are full rotation versions of S1 S2.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| View documentation related to this dataset | Release Notes | Open resource | |
| This dataset's landing page | HTML | Access the dataset landing page from the GES DISC website. | Open resource |
| Get a related visualization | PNG | Brightness Temperature from GPM GMI (13 km x 13 km) for 06/30/2016 (GPM_BASEGPMGMI_XCAL) | Open resource |
| View this dataset's read me document | README Document | Open resource | |
| Download this dataset through a directory map | HTML | Access the data via HTTPS | Open resource |
| Use OPeNDAP to access the dataset's data | HTML | Access the data via the OPeNDAP protocol | Open resource |
| The dataset's project home page | HTML | GPM Project Home Page | Open resource |
| View documentation related to this dataset | FILE SPECIFICATION DOCUMENT | Open resource | |
| View this dataset's documented anomalies | HTML | GPM and partner sensors anomalous events | Open resource |
| View documentation related to this dataset | HTML | Instrument Description | Open resource |
| Google Scholar search results | HTML | Search results for publications that cite this dataset by its DOI. | Open resource |
| Download this dataset through Earthdata Search | HTML | Use the Earthdata Search to find and retrieve data sets across multiple data centers. | Open resource |