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warn_icon.gif IMPORTANT MESSAGE Jul 23, 2014    TRMM DSC (Deep Space Calibration) Jul. 22, 2014 and TMI Data   

From PPS: TRMM underwent a DSC (Deep Space Calibration) for the TMI instrument on Tuesday July 22, 2014.  This maneuver impacted the following orbits/granules:

 95022-95027 (12:09:44 - 21:23:59 UTC)

 Please be aware that these data are being distributed as regular products and NOT empty granules replacements.

These data products also contain useful sections of DSC data as well as earth view data.

 

The Tropical Rainfall Measuring Mission (TRMM) is a joint mission between NASA and the Japan Aerospace Exploration Agency (JAXA) designed to monitor and study tropical rainfall.

Instruments onboard the TRMM satellite

Basic Information

Launch Date
November 27, 1997
Orbit
Circular, non-sun-synchronous, with an inclination of 35 degrees to the Equator.
Orbit Altitude

350 km (1997/11/27 - 2001/08/08)

403 km (2001/08/24 - present)

Altitude Change
During the period of 2001/8/7 to 2001/8/14, the average operating altitude changed from 350 km to 403 km (referred to also as TRMM Boost).


Instruments

Below are overview descriptions of the instruments on the TRMM satellite:

Visible Infrared Radiometer (VIRS)
The VIRS (of NOAA AVHRR heritage) is a five-channel, cross-track scanning radiometer operating at 0.63, 1.6, 3.75, 10.8, and 12 um, which provides high resolution observations on cloud coverage, cloud type, and cloud top temperatures.
TRMM Microwave Imager (TMI)
The TMI (of DMSP SSM/I heritage) is a multichannel passive microwave radiometer operating at five frequencies: 10.65, 19.35, 37.0, and 85.5 GHz at dual polarization and 22.235 GHz at single polarization. The TMI provides information on the integrated column precipitation content, cloud liquid water, cloud ice, rain intensity, and rainfall types (e.g., stratiform or convective).
Precipitation Radar (PR)
The PR, the first of its kind in space, is an electronically scanning radar, operating at 13.8 GHz that measures the 3-D rainfall distribution over both land and ocean, and define the layer depth of the precipitation.

Further information on these instruments may be found on the TRMM Instruments Web page.


Latest News

Precipitation time series for the Bosnia-Herzegovina flood event in mid-May 2014.
Jun 27, 2014 - The June 2014 issue of The Giovanni News is online

Articles on Giovanni 4.8 release, Bosnia-Herzegovina floods, Czech Republic vegetation

+ Read More…
On average, the western Florida Panhandle receives about 100 mm of rain in April.
Jun 13, 2014 - Record-shattering rain inundates Pensacola, Florida in late April 2014

In two days, the area received 5-6 times the normal monthly rainfall for April

+ Read More…
This Giovanni image shows particulate inorganic carbon concentrations during the Lake Ontario whiting event in August 2013.
Jun 05, 2014 - Article in Earthzine highlights use of Giovanni for public health research

Data are used for research on infectious disease, air quality, and water quality

+ Read More…
The highlighted area of the Sierra Nevada Mountains was used to generate a time-series of snow mass, vital to the water interests in California.
May 30, 2014 - The May 2014 issue of The Giovanni News is online

Lightning and NO2 in Africa, rain and floods in Florida, drought and snow in California

+ Read More…
This Hovmöller diagram of sea surface temperature in the Pacific Ocean shows variation related to El Niño and La Niña events.  La Niña events have dominated in recent years.
Apr 29, 2014 - The April 2014 issue of The Giovanni News is online

Lightning and rain in the Mediterranean region, Hovmöller diagram of SST, and Giovanni-4 images

+ Read More…

+TRMM News Archive  RSS News Feed

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Last updated: May 27, 2010 04:35 PM ET