They check the weather patterns over a targeted area which is set to be photographed by a recon satellite. Also "Meteor-M No. 3 would also be equipped with a new-generation phased antenna radar for ocean monitoring"
http://www.russianspaceweb.com/meteor.html
http://en.rian.ru/science/20090917/156164853.html
Russia launches Soyuz rocket with Meteor-M weather satellite
Russia launches Soyuz rocket with Meteor-M weather satellite
Sergey Kazak | Buy this image
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21:0317/09/2009
MOSCOW, September 17 (RIA Novosti) - Russia has launched a new meteorological satellite on board a Soyuz 2.1b carrier rocket, a spokesman for the Federal Space Agency Roscosmos said on Thursday.
The satellite has already reached orbit.
The launch of the Meteor-M satellite and five mini-satellites had been delayed twice for weather and technical reasons.
Meteor-M weighs about 2,700 kilograms (6,000 lbs) and has a service life of five years. It will orbit at an altitude of 830 kilometers (515 miles).
The second satellite in the Meteor series is expected to be launched in early 2010. A total of three Meteor satellites are due to be orbited under the program.
The satellite is designed to gather data for weather forecasts, to monitor the Earth's ozone layer and radiation conditions in the upper atmosphere, as well as to provide information on ice floe for maritime shipping in the polar regions.
At present, Russia does not have any weather satellites in orbit and uses meteorological data from U.S. and European weather agencies.
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