New Delhi: The Indian Meteorological Department (IMD) plans to ask the Indian Universe Research Organization (ISRA) to create and trigger the satellites of the series of two fourth generations, helping to improve weather forecast accuracy.
These new satellites will replace two third generation satellites by 2028-29 £1 800 crore. The costs of satellites will be paid by the Ministry of Sciences of the Earth, said IMD CEO Mrutyunjay Mohapatra in an interview.
Improved satellites will provide a better image resolution and will be equipped with state -of -the -art lightning forecast sensors, Mohapatra said.
In March and April, up to 162 people were killed.
Mohapatra said: “In distant areas such as oceans, hills, Himalayas and polar regions, there is no way to observe the tools. So the separation of long -distance survey instruments such as radars and satellites.
“Radars have restrictions because the radar can only cover 500 kilometers in any particular place and you cannot put the radar in the sea or the peaks of the hills where you have no communication system or roads or water. Therefore, satellite becomes very useful, although its accuracy is less compared to the ground and radars.”
IMD uses satellite technology considerably for monitoring and weather forecast. It started using photos from television infrared observation satellites (Tiros-1) launched in 1960.
Two satellites currently using IMD have one kilometer in a visible range and an infrared range of 4 km.
“Then we cascaded these two satellites, so you get a picture every 15 minutes. The satellite is geostationary. In addition, there are other sensors in the satellite that provide additional information, such as wind and moisture, water vapor you can say. So we get this information from our own satellites,”
IMD also obtains data from European, Japanese and Korean satellites. According to him, there is cooperation between countries called a coordinated group of meteorological satellites.
However, there are still gaps in the detection of weather events on a small scale, such as cloudbursts, thunderstorms and lightning due to lack of data, products and satellite tools with high resolution. “Given this, ISRO would develop a series of ISAT-4 with better sensors and resolution,” Mohapatra said.
Assimilation of satellite data in models improved accuracy in short to medium prognosis by about 20% to 30%, according to IMD.
(Tagstotranslate) IMD
