the technical and administrative control of the Regional
Meteorological Centre, Chennai three Meteorological centres
function at Hyderabad, Bangalore and Thiruvananthapuram to
render meteorological services in their respective states.
Cyclone warning centre at RMC Chennai supervises and coordinates
the non-aviation forecasting work at Meteorological centres.
warning services are rendered through Area Cyclone Warning
Centre, Chennai and Cyclone Warning Centre, Visakhapatnam.
Office at Chennai Airport (Minambakkam) controls and coordinates
the aviation weather forecasting activities of the region.
Detection Radars located at Chennai, Machilipatnam,
Visakhapatnam, Karaikal and Kochi track Tropical Cyclones over
the Bay of Bengal and the Arabian Sea with their S-band 10 cm
S-Band Radar at Chennai has been replaced with a Doppler Weather Radar
Resolution Picture Transmission (HRPT) direct readout ground
station was established at RMC Chennai during June 1995. This
receives AVHRR satellite imageries and TOVS data from polar
orbiting NOAA Satellites.
Chennai also houses the Cyclone Warning Dissemination System
(CWDS) unit from where the cyclone warning bulletins are
disseminated to remote centres in coastal districts.
Seismological Observatories are functioning at
Thiruvananthapuram, Visakhapatnam, Vijayawada, Minicoy and Salem
under this RMC. Seismological observatories under Global
Seismological Network (GSN) were established at Chennai,
Thiruvananthapuram and Visakhapatnam during 1997. An observatory
under World Wide Standardised Seismological Network (WWSSN) is
functioning at Kodaikanal. A broad Band System is functioning at
observations collected over a number of years form the basis of
Climatology. Climatological data have wide applications and are
utilized for planning large-scale national development projects.
Climatological sections at Regional Meteorological Centre
and other meteorological centres in the region organise the
scrutiny and archival of meteorological data and use them for
answering various weather related enquiries.
of meteorological observations is ensured by periodical
inspections of observatories by the inspectorate section at
Regional Meteorological Centre and other Meteorological Centres.
Calibrations of all instruments at observatories are checked at
least once in two years.
state governments, Railways and other organisations, maintain
more than 2000 rainguage stations. Periodical inspections of
these rainguage stations are arranged through hydrology sections
at RMC Chennai and other MCs.
training unit to cater the Basic Meteorological Training course
was started at RMC Chennai during 1984.
More than 1000 trainees in about 50 batches of four
months duration each have already been trained so far.
Advisory Units have started functioning at RMC Chennai and other
MCs from 1978. These units are regularly issuing Agromet
Advisory Bulletins twice a week for the benefit of the farming
community in their respective states.
Chennai maintains 121 surface observatories (53 departmental and
68 part-time), 13 pilot balloon observatories, 10
Radiosonde/Rawin stations and 1 radiosonde station.
Meteorological offices at Chennai, Kochi and Visakhapatnam
liaison with masters of ships and shipping companies and other