Description
Version 07 is the current version of the data set. Older versions will no longer be available and have been superseded by Version 07.
The 2AGPROF (Goddard Profiling) algorithm retrieves consistent precipitation and related science fields from the following GMI and partner passive microwave sensors:
+ TMI (TRMM)
+ GMI, (GPM)
+ SSMI (DMSP F15), SSMIS (DMSP F16, F17, F18, F19)
+ AMSR2 (GCOM-W1)
+ MHS (NOAA 18,19)
+ MHS (METOP A,B)
+ ATMS (NPP)
+ SAPHIR (MT1)
This provides the bulk of the 3-hour coverage achieved by GPM. For each sensor, there are nearrealtime (NRT) products, standard products, and climate products. These differ only in the amount of data that are available within 3 hours, 48 hours, and 3 months of collection, as well as the ancillary data used. The NRT product uses GANAL forecast fields. Standard products use the GANAL analysis product, while the climate product uses ECMWF reanalysis in order to allow for consistent data records with earlier missions. These earlier data may be archived separately. The main strength of the product is the large sampling provided.
The GPM radiometer algorithms are Bayesian-type algorithms. These algorithms search an apriori database of potential rain profiles and retrieve a weighted average of these entries based upon the proximity of the observed brightness temperature (Tb) to the simulated Tb corresponding to each rain profile. By using the same a-priori database of rain profiles, with appropriate simulated Tb for each constellation sensor, the Bayesian method is completely parametric and thus well suited for GPM's constellation approach. The a-priori information will be supplied by the combined algorithm supplied by GPM's core satellite as soon after launch as feasible. Databases for V0 of the algorithm had to be constructed from various sources as described in the ATBD. The solution provides a mean rain rate as well as the vertical structure of cloud and precipitation hydrometeors and their uncertainty.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| This dataset's landing page | HTML | Access the dataset landing page from the GES DISC website. | Open resource |
| Get a related visualization | PNG | Surface Precipitation from F16 GPROF (GPM_2AGPROFF16SSMIS) | 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 this dataset's algorithm theoretical basis document | ATBD_GPM_V5B_April15_2018.pdf | 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 |
| View documentation related to this dataset | HTML | Instrument Description | Open resource |