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- Indian Ocean and Southern
Hemisphere Analysis Centre (INOSHAC) prepares extended area Synoptic
Charts for the region covering 50º S to 45º N and 20ºE to 155º E. The
mean sea level chart is prepared 4 times a day while the upper wind and
temperature charts for the levels 850, 700, 500, 300, 200 & 100 hPa
are prepared twice daily. Mean sea level charts covering the Antarctica region are also prepared twice daily.
- For the safety Net Met. Area
VIII (N) issues daily two GMDSS bulletins in fair weather. In disturbed
weather (cycle etc) extra bulletins are issued every three hours. These
bulletins are compiled and originated from the INOSHAC Section of Office
of DDGM (WF), Pune and transmitted to DGM (Telecom) New Delhi through
NHAC New Delhi for its onward transmission on Global Channel through
Land Earth Station (LES) Arvi via IMARSET/NAVTEX.
- INOSHAC issues daily two
bulletins in fair weather for Indian Navy in the form of fleet forecast
for the area 10º S to 5º N and 60º E to 100º E. In case of disturbed
weather (depression onward) frequency is increased and additional
bulletins (2 to 6) are also issued depending upon the need.
- INOSHAC issues two sea
weather bulletins daily for the South Indian Ocean and Northwest Pacific
for departmental exchange, to familiarize with the events in the area.
- The section prepares the
following inputs for the Annual Monsoon Review Meeting for the period
June to September every year:
- Cross Equatorial flow from
the southern hemisphere week by week (within ± 5º of equatorial)
- System in the Northwest
Pacific and South China Sea and South Indian Ocean
week by week.
- Strength of Mascarene and
Australian Highs month wise and their anomalies.
- Movement of upper air
troughs at 500 and 300 hPa levels in the upper air westerlies,
penetrating from both the hemisphere between 30º N to 30º S over Indian
region.
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