TRMM

The Tropical Rainfall Measuring Mission (TRMM) satellite was placed into its low-earth orbit in November of 1997. Its primary mission has been to measure rainfall from space. TRMM has provided space borne rain radar and microwave radiometric data that measure the vertical and horizontal distribution of rainfall over the tropics. It has also been valuable for monitoring the development of tropical cyclones, especially over remote parts of the open ocean. The image on the right uses data captured by the TRMM satellite on 7 April 2011 at 1914 UTC. It shows a TRMM satellite view of rain intensity

On 3 April 2011 at 2250 UTC the TRMM satellite revealed that dissipating tropical cyclone TWENTY was still generating a few moderate thunderstorms over western Australia. Tropical cyclone TWENTY was the third to affect western Australian this tropical cyclone season that started in November 2010 and ends on 30 April 2011.

The TRMM satellite flew over an area of disturbed weather east of the Philippines on 3 April 2011 at 0129 UTC collecting data used in the image above. This area contains very intense thunderstorms with tops shooting to heights above 17 km (~10.6 miles). Heavy rainfall in these thunderstorm towers can provide the energy needed for tropical cyclone (typhoon) development.

More than 15 people have been killed in Thailand over the past week due to flooding and mudslides caused by extremely heavy rainfall. The Multisatellite Precipitation Analysis (TMPA) analysis above was made using data that were calibrated with TRMM precipitation data. These data are calculated and stored at NASA Goddard Space Flight center and are available within a few hours after being received by satellites. This analysis shows that rainfall for the past week over the Malay Peninsula was particularly extreme with totals of almost 1200 mm (~47 inches). TRMM satellite data revealed that

Tropical cyclone BUNE was southeast of the Fiji Islands and close to a category one on the Saffir-Simpson scale when the TRMM satellite passed above on 24 March 2011 at 1548 UTC. TRMM Microwave Imager (TMI) and Precipitation Radar (PR) data from this pass show that large rain bands around BUNE contained numerous intense thunderstorms. BUNE is expected to peak as a category two tropical cyclone with wind speeds of about 85 kts (~98 mph) on 26 March 2011 while moving over the open waters northeast of New Zealand.