Indian Ocean Forecast System (INDOFOS)
Abhisek Chatterjee
Earth System Sciences Organisation (ESSO)
Indian National Centre for Ocean Information Services (INCOIS)
Ministry of Earth Sciences, Government of India
HYDERABAD
VIth Annual Meeting of GOADE OceanView Science Team, Sydney 2-6th Nov 2015
Ocean State Forecast- The Users
Integrated INDian Ocean FOrecasting System (INDOFOS)
Forecast Generation: Models
ROMS
General
parameters
circulation
Indian Ocean
Every 6 hour for 7 days
Operational
Regional
Coastal
High resolution – WC and
SEA
Spectral Wave models
Wave/Swell paremetrs/High
wave Alert
Regional,
Coastal and Location
specific
Every 3 hour for 7 days
Operational
WAVEWATCH-III
(Single grid)
Wave/Swell paremters
Global
Every 6 hour for 5 days
Semi-operational
WAVEWATCH III
(Multi grid)
Wave/Swell paremters
Global and Regional
Every 6 hour for 5 days
experimental
GNOME
Oil spill trajecory
Location specific
3 hours
Operational
INCOIS has been providing Operational forecasts of the general circulation
features of the Indian Ocean from early 2010 onwards.
Initially the spatial resolution of the Indian Ocean Forecast System (INDOFOS)
was 0.25o x 0.25o and later it was enhanced to 0.125o x 0.125o. Now the
horizontal resolution is increased to 1/12o x 1/12o
High-resolution Operational Ocean Forecast and reanalysis System (HOOFS)
Currently ESSO-INCOIS is implementing a series of very fine resolution (~ 2.25 x 2.25 km) coastal
ocean forecast system for the entire coastal waters of the country.
The set-ups are forced by the Operational atmospheric prediction system from the National
Centre for Medium Range Weather Forecast (NCMRWF), New Delhi.
Tidal boundary conditions are provided from the OSU Tidal Prediction software (OTPS).
Forecasting variables: Currents, Temperature, Salinity, D20, MLD, Sea Surface Height
Validation of the simulations by the SEA-HOOFS with the observations
l Kochi
l
l Colombo
October 2011
Simulation of barotropic tidal currents- comparison between
model simulation and ADCP observation
Shelf off Goa
Slope off Mumbai
Courtesy: MP Subeesh, NIO
Wave Forecast
Location specific wave forecast
Wave forecast for Nellore (East coast of India)
High Wave Alert/Warning and benefit to Fishermen
Multi-lingual Warnings during HUDHUD cyclone
 The OSF service is provided to fishermen (free of cost)across the country.
 Purpose of usage of OSF is to decide on whether or not to venture for fishing, casting their nets, anchoring th
Ocean State Forecast along Ship Routes: Evaluation Using ESSO-INCOIS
Real-Time Ship-Mounted Wave Height Meter and Satellite Observations
R&D
‘OSF along Ship-routes ‘ VS ‘Wave Height Meter’
OSF
WHM
• Validation of Altimeter data using WHM
shows a good match. Hence,
• Further evaluation of OSF using altimeter
shows a good match with average r > 0.85
with a SI < 20%.
(Harikumar et al., 2015, JAOT)
‘OSF along Ship-routes ‘ VS ‘Altimeter’
Wave map service
Cyclone Hudhud
October 2014
Last DWR observation
Oil Spill trajectory prediction
for west coast of india with
high resolution currents
The Online Oil Spill Advisory (OOSA) version 2.0 was inaugurated by Director, INCOIS on 09.04.2015 at 20th NOSDCP
meeting organised by Indian coast Guard, held in Goa. This version gives the high resolution trajectory prediction for
the west coast and also gives the trajectory prediction for continuous and instantaneous spills
Search and Rescue
Probability Scale
Triangular area boundary
Advisory valid Period: 3 days
Search and Rescue activities (from 11-18 June, 2015)
for the missing Indian Coast Guard aircraft off
Karaikal, southeast coast of India, by assisting the
Indian Coast Guard search and rescue team with
a specialised in house developed SARAT (Search
and Rescue Aid Tool)" module/system - which helps
in locating lost persons and objects in the sea, based
on the last known position details.
Feedback from Commander Coast Guard for support and cooperation given by INCOIS during Search and
Rescue operations for missed Coast Guard Dornier CG 791.
INCOIS tide prediction stations
INDIA
COUNTRY
INCOIS
STATIONS
INDIA
MYANMAR
SRI LANKA
BANGLADESH
CHAGOS
PAKISTAN
MALDIVES
136
12
11
9
5
4
1
TOTAL
178
Harmonic constituents (source) : National Institute of Oceanography, Goa
INCOIS has recently provided alerts for
perigean spring tide flooding
Munroe island (23 February 2015)
Real time storm surge warning for the very severe cyclonic storm ‘Hudhud’
FORECAST SUMMARY
First Simulation
0530 IST of 08-10-2014
Last Simulation
1730 IST of 12-10-2014
Number of Computational Grid Points in the 0.5 Million
Inundation Model Domain
Model Integration
5 Days
Time Taken for Each Simulation on HPC
45 Minutes using 256 Processors
Total number of bulletins issued
29
Maximum surge simulated for the entire
duration of the event
2.4m near Pedanagayyapalem, Puspatirega
mandal, Andhra Pradesh based on track
forecast issued by IMD at 1430 IST of 11th
October
Maximum inundation extent simulated for
the entire duration of the event
400 m near Pedanagayyapalem, Puspatirega
mandal, Andhra Pradesh
Real time storm surge warning for the very severe cyclonic storm ‘Hudhud’
Real time validation of surge levels with observed tide gauge records.
(Tide gauge station: Visakhapattanam)
Ocean State Forecast system for neighbouring countries
OSF has been providing to Maldives for 2 years
Ocean State Forecast system for Sri Lanka and Seychelles in collaboration with
RIMES, inaugurated on 10th July 2015
Dissemination of ocean state forecasts
Streamlined Operational Dissemination System
Telephone / Fax
 Electronic Display Boards
 Emails
 Web internet
- Maps & Text
- Web GIS
 SMS
 Radio and Doordarshan
 Local News Papers
 Information Kiosks
Networking with NGOs and fishermen societies
 Advisories are provided in English, Hindi and 9 Local
languages, making them more acceptable and usable
INCOIS is providing global ocean re-analysis on operational basis starting
from 2003 to till date. This global ocean re-analysis is generated by
assimilating a rich collection of ocean temperature and salinity profiles from
various observation networks (Argo, moored buoys, XBTs, NIOT buoys etc.)
in Global Ocean Data Assimilation System configured at INCOIS (modified
version of NCEP-GODAS)
THANK YOU
abhisek.c@incois.gov.in
For more details please visit our wave page
www.incois.gov.in