(IMD) was established in - India Meteorological Department
(IMD) was established in - India Meteorological Department
(IMD) was established in - India Meteorological Department
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<strong>India</strong> <strong>Meteorological</strong> <strong>Department</strong><br />
7. Satellite Meteorology<br />
<strong>IMD</strong> is receiv<strong>in</strong>g and process<strong>in</strong>g meteorological data from two <strong>India</strong>n satellites namely Kalpana-1 and INSAT-3A.<br />
th 0 th<br />
Kalpana-1 <strong>was</strong> launched on 12 September, 2002 and is located at 74 E. INSAT-3A <strong>was</strong> launched on 10 April, 2003<br />
0<br />
and is located at 93.5 E. Kalpana-1 and INSAT-3A both have three channel Very High Resolution Radiometer<br />
(VHRR) for imag<strong>in</strong>g the Earth <strong>in</strong> Visible (0.55-0.75 m), Infra-Red (10.5-12.5m) and Water vapour (5.7-7.1m)<br />
channels hav<strong>in</strong>g resolution of 2X2 kms. <strong>in</strong> visible and 8X8 kms. <strong>in</strong> WV and IR channels. In addition the INSAT-3A<br />
has a three channel Charge Coupled Device payload for imag<strong>in</strong>g the earth <strong>in</strong> Visible (0.62-0.69m), Near Infra Red<br />
(0.77-0.86m) and Short Wave Infra Red (1.55-1.77m) bands of Spectrum. The Resolution of CCD payload <strong>in</strong> all the<br />
three channels is 1 Km × 1 Km. At present about 48 nos. of satellite images are taken daily from Kalpana-1 which is<br />
the ma<strong>in</strong> operational satellite and 9 images are taken from INSAT-3A. Imag<strong>in</strong>g from CCD is done 5 times dur<strong>in</strong>g<br />
daytime only. All the received data from the satellite is processed and archived <strong>in</strong> National Satellite Data Centre<br />
(NSDC), New Delhi. (http://www.imd.gov.<strong>in</strong>/section/satmet/dynamic/<strong>in</strong>sat.htm)<br />
Quantitative Satellite Products<br />
Sea surface Temperatures (SSTs)<br />
Outgo<strong>in</strong>g Longwave Radiation(OLR)<br />
Quantitative Precipitation Estimates (QPEs)<br />
Cloud motion vectors (CMVs)<br />
Water vapor w<strong>in</strong>ds (WVWs)<br />
Sea Surface Temperature<br />
Land Surface Emissivity<br />
A Products catalog for NOAA/MODIS<br />
satellites payloads <strong>was</strong> also prepared and<br />
posted on <strong>IMD</strong> ma<strong>in</strong> website for use of<br />
forecasters and researchers.<br />
Recently three Ground receiv<strong>in</strong>g and<br />
process<strong>in</strong>g systems for NOAA/METOP<br />
and MODIS Polar orbit<strong>in</strong>g satellites were<br />
<strong>in</strong>stalled at <strong>IMD</strong> New Delhi, RMC Chennai<br />
and at RMC Guwahati.<br />
Atmospheric moisture profile<br />
Fog detection<br />
The OCEANSAT-2 Satellite of ISRO<br />
became available for operational use from<br />
July 2010. The Sat. Met. Division has<br />
undertaken projects with SAC (ISRO)<br />
utiliz<strong>in</strong>g the OCEANSAT -2 data for<br />
Tropical Cyclone genesis and use of data <strong>in</strong><br />
NWP models.<br />
Outgo<strong>in</strong>g Longwave Radiation (Jun-Sep, 2010)<br />
Ocean surface w<strong>in</strong>d<br />
Kalpana's WVW<br />
Normalised DifferenceVegetation Index<br />
8<br />
In the Service of Nation S<strong>in</strong>ce 1875
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