COUNTRY REPORT MALDIVES METEOROLOGICAL SERVICE

Transcription

1 COUNTRY REPORT MALDIVES METEOROLOGICAL SERVICE

2 INTRODUCTION Na tiona l Meteorologica l Centre Geographical location of the station is N E. In accordance with WMO practices that every national meteorological network should designate one station as its National Meteorological Centre, Government renamed the Meteorological Centre as the National Meteorological Centre on 1 August From this date, NMC has been functioning 24 hours. Daily weather forecasts, all kinds of aviation forecasts, weather warnings and marine forecasts are issued from National Meteorological Centre. Founded in the early 1940s it started with only maximum and minimum thermometers, a rain gauge and an anemometer. Maldives Meteorological Service is now among the most reputed and technologically advanced organization in the government sector.

3 Maldives Weather Observation Network 5 Avia tion / synoptic met sta tions in five a irport 21 AWS ( Automa tic Weather Sta tions ) currently opera tiona l throughout the country. 1 Doppler weather radar 2 High resolution sa tellite ima ge receiving systems ( KALPANA,FY2C) Our Meteorologica l Network is esta blished with Regiona l Telecommunica tion Hub (RTH) New Delhi a nd RTH Melbourne to excha nge meteorologica l data a nd tsuna mi informa tion.

4 Maldives Weather Observation Network The NMC has established redundant links for communicating with local, regional and international centers by using 256kbps VSAT, 10mbps Internet connection and satellite phones. Warnings are issued from the following media ; i.hot lines ii.telefax iii.mass media (TV, Radio) iv.public Alert (cell broadcast & fixed line phone) v.sms to selected users vi. vii.website

5 Aviation/ synoptic met stations Da ily observa tions like tempera ture, humidity, ra in, wind speed a nd direction a nd visibilities a re recorded. Minimun and maximum temperatures are taken daily at UTC 0300 a nd UTC1200 respectively. Sunshine records a re ta ken a t 1300hrs UTC. New cards for each day. Ma le ; NMC is the centra l met sta tion in Ma ldives. Avia tion a nd synoptic data from all stations are collected and distributed by NMC.

6 Observations

7 Automatic Weather Stations HDh.Ma kunudhoo R.Vaadhoo HA. Uligam Sh. Feevak The sta ions use va isa la weather transmitter WXT520. It is a sma ll a nd lightweight tra nsmitter tha t offers six weather perimeters in one compact package. W XT520 measures windspeed a nd direction,precipita tion, a tmospheric pressure, tempera ture a nd rela tive humidity. B.Dha ra va ndhoo K. Ka a shidhoo K. Vabbinfaru K. Hulhule K. Ma le Adh. Rangali V.Fulidhoo F.Nila ndhoo Dh.Hulhudheli Th.Hirla ndhoo Th.Vilufushi L.Isd hoo GA.Villingili GDh.Gadhdhoo S.HHitha dhoo Gn.Fua hmula ku S.Hulhumeedhoo

8 Doppler Weather Radar Intorduction The Ma ldives Meteorologica l Service is equipped with DWSR- 8501S ra dar which is the world s most powerful S-Band Doppler wea ther surveilla nce ra dar. DW SR-8501S provides the best clutter suppression a nd S-band ra nge perfoma nce for observing multiple long ra nge wea ther pehnomena. The tansmitter provides 850 kw pea k RF power pulse with dura tion of 0.2,0.4,1.0 a nd 2.0 micro seconds. The ra dar is currently not opera tiona l due the problem with the cooling system of the hut & software. It needs to be calibrated.

9 Satellite Image receiving system ES&S GEOSAT500 ground sta tion High performa nce system tha t receives a nd processes downlinks from Chinese Meteorologica l sa tellite ; Fengyun-2C sa tellite. The sa tellite provides regula r ima ges of the earth, a llowing foreca sters to ma ke weather predictions a nd to follow path of cyclones. The system components include para bolic dish, sa tellite receiver, Acquisition, processing a nd display worksta tion, GEOSAT500 processing softwa re a nd METEOR ima ge display a nd a na lysis softwa re.

10 Satellite Image receiving system Below is a n ima ge a cquired from GEOSAT500 system

11 Global Telecommunication System Hdh. Hanimaadhoo K.Hulhule Gdh. Kaadedhdhoo Gdh. Kaadedhdhoo S.Gan Our ma in hub is loca ted in Delhi, India.

12 Global Telecommunica tion System We receive Meteorological and tsunami information via Global Telecommunica tion System (GTS) Below is a screen shot from two of our GTS terminals The MESSIR-VISION Forecaster's Workstation integrates this vast amount of information into a single system. MESSIR-VISION provides the Forecasters with a comprehensive range of tools to display, manipulate and combine all the available data and products, make decisions and produce outputs such as maps and forecasts. MESSIR-AERO enables you to receive, store, display and print all the OPMET and charts needed by pilots, aeronautical briefing offices, and airline operators.

13 Seismic Network Ea rth Qua ke monitoring SeisComp3 The Seiscomp 3 softwa re is used to loca te a nd ca lcula te the epicenter, ma gnitude a nd other para meters. Immedia tely a fter the occurrence of a n ea rthqua ke over the India n ocean, Geologica l observers will loca te epicenter a nd ca lcula te Ma gnitude by using SeisComp3. We also get the ea rthqua ke informa tion from U.S. Geologica l Survey & JMA. The seiscomp 3 communica tes via dedicated 512kb/ s sa tellite link to Jakarta, Indonesia. There are two broadband seismometers in the Ma ldives.

14 Seismometers in Maldives Hdh. Hanimaadhoo Gdh. Kaadedhdhoo

15 Seismic Network Earthquake monitoring by CISN ( California Integrated Seismic Network ) We a lso observe the California Integrated Seismic Network [CISN], to monitors earthquakes across the world

16 Sea-level data network HD.Ha nima a dhoo Hulhule Hawaii S.Gan The sea-level data network is esta blished in Ma ldives in ca llobra tion with Hawai sea level center There are 3 tide gauges situated at three different locations in the Ma ldives.

17 W E NEED HELP-SO DOES EVERYO NE! We believe there is always room for improvement. The Ma ldives Meteorologica l Service is really short of tra ined sta ffs in a reas like ; - System Softwares - Seismology - Foreca sting - Observa tion - Ca libra tion Currently No sta ff tra ined in Doppler ra dar opera tions a s well a s it s ma intena nce.

18 THANK YOU