The Tropical Rainfall Measuring Mission (TRMM) is a joint U.S.-Japan satellite mission to monitor tropical and subtropical precipitation.
The Visible/Infrared Scanner (VIRS) Radiance Gridded Orbital data are a special product derived from the TRMM standard product, VIRS Radiance (1B-01), and mapped to a 0.25 degree x 0.25 degree latitude/longitude grid. The spatial coverage is defined by a 720 km swath bounded by the latitudes 38 degree N and 38 degree S for a single satellite orbit. The parameters included in this data set are the scene radiance data for the five VIRS channels.
This URL contains information and data access for all of the Goddard DAAC's hydrology data holdings, including TRMM data from the TMI, Precipitation Radar (PR), and Visible and Infrared Scanner (VIRS) instruments, the Ground Validation (GV) radar data, and ancillary and correlative data products.
Horizontal Resolution Range:
1 km - < 10 km or approximately .01 degree - < .09 degree
16 orbits per day
Temporal Resolution Range:
Daily - < Weekly
For the Level 1B VIRS product, a Table structure (called Scan Status) has been included in the HDF file containing entries on a scan-by-scan ... basis. These entries include a geolocation quality flag, as well as a data quality flag for each channel, indicating the percentage of pixels along each scan with values within a pre-defined range.
Hydrology Data Support Team, Code 610.2
Goddard Space Flight Center
Province or State:
Interface Control Specification Between the Tropical Rainfall Measuring Mission Science Data and Information System (TSDIS) and the TSDIS Science User (TSU). Volume 3: File Specifications for TSDIS Products-Level 1. NASA Goddard Space Flight Center, March 31, 1999.