COUNT R Y R E P OR T MAL DIVE S ME T E OR OL OGICAL SE - PowerPoint PPT Presentation

COUNT R Y R E P OR T MAL DIVE S ME T E OR OL OGICAL SE R VICE

INT R ODUCT ION National Meteorological Centre   Geographical location of the station is 04.19°N 073.53°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 1980. 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.

Maldives Weather Obs ervation Network 5 Aviation / synoptic met stations in five airport  21 A WS ( Automatic Weather Stations ) currently operational throughout the  country. 1 Doppler weather radar  2 High resolution satellite image receiving systems ( K AL PANA,FY 2C)  Our Meteorological Network is established with R egional T elecommunication Hub  (R T H) New Delhi and R T H Melbourne to exchange meteorological data and tsunami information.

Maldives Weather Obs ervation 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. Email vii. Website

Aviation/ s ynoptic m et s tations Daily observations like temperature, humidity, rain, wind speed and  direction and visibilities are recorded. Minimun and maximum temperatures are taken daily at UT C  0300 and UT C1200 respectively. Sunshine records are taken at 1300hrs UT C. New cards for each day.  Male’ ; NMC is the central met station in Maldives. Aviation and  synoptic data from all stations are collected and distributed by NMC.

Obs ervations

Autom atic Weather S tations HA. Uligam T he staions use vaisala weather transmitter WX T 520. It is a small and  lightweight transmitter that offers six weather perimeters in one compact package. HDh.Makunudhoo Sh. Feevak WX T 520 measures windspeed and direction,precipitation, atmospheric  R .Vaadhoo pressure, temperature and relative humidity. B .Dharavandhoo K . K aashidhoo K . Vabbinfaru K . Hulhule K . Male’ Adh. R angali V.Fulidhoo F.Nilandhoo Dh.Hulhudheli T h.Vilufushi T h.Hirlandhoo L .Isdhoo GA.Villingili GDh.Gadhdhoo Gn.Fuahmulaku S.HHithadhoo S.Hulhumeedhoo

Doppler Weather R adar Intorduction   T he Maldives Meteorological Service is equipped with DWSR - 8501S radar which is the world’s most powerful S-B and Doppler weather surveillance radar.  DWSR -8501S provides the best clutter suppression and S-band range perfomance for observing multiple long range weather pehnomena.  T he tansmitter provides 850 kW peak R F power pulse with duration of 0.2,0.4,1.0 and 2.0 micro seconds.  T he radar is currently not operational due the problem with the cooling system of the hut & software. It needs to be calibrated.

S atellite Im age receiving s ys tem  E S&S GE OSA T 500 ground station  High performance system that receives and processes downlinks from Chinese Meteorological satellite ; Fengyun-2C satellite.  T he satellite provides regular images of the earth, allowing forecasters to make weather predictions and to follow path of cyclones.  T he system components include parabolic dish, satellite receiver , Acquisition , processing and display workstation, GE OSA T 500 processing software and ME T E OR image display and analysis software.

S atellite Im age receiving s ys tem B elow is an image acquired from GE OSA T 500 system 

Global T elecom munication S ys tem Hdh. Hanimaadhoo K .Hulhule’ Gdh. K aadedhdhoo Gdh. K aadedhdhoo  Our main hub is located in Delhi, India. S.Gan

Global T elecommunication System  We receive Meteorological and ts unam i inform ation via Global T elecommunication System (GT S)  B elow is a screen shot from two of our GT S terminals The M ME E S S S S I IR-VIS ION F For orecas aster's Wor orkstat ation on int ntegr grat ates t thi his vas ast am amount ount of of ME E S S S S IR-AE I RO e enabl nables y you t ou to o receive, stor ore, di displ play ay and pr and print nt al all inf nfor ormat ation on int nto a o a singl ngle s system. M ME S S IR-VIS ION pr prov ovide des the he F For orecas asters w with h the he OPME T and c and char harts ne neede ded d by by pi pilot ots, ae aeronaut onautical al br briefing ng a com a c ompr prehe hens nsive range ange of of tool ools t to o di displ play ay, m mani anipul pulat ate and c and com ombi bine ne al all t the he offices, and ai of and airline ne ope operat ator ors. avai av ailabl able dat data and pr a and produc oducts, mak ake de decisions ons and and pr produc oduce out output puts s suc uch h as as maps aps and and for orecas asts.

S eis m ic Network  E arth Quake monitoring – SeisComp3 • T he Seiscomp 3 software is used to locate and calculate the epicenter, magnitude and other parameters . Immediately after the occurrence of an earthquake over the Indian ocean, Geological observers will locate epicenter and calculate Magnitude by using SeisComp3. We also get the earthquake information from U.S. Geological Survey & JMA. • T he seiscomp 3 communicates via dedicated 512kb/ s satellite link to Jakarta, Indonesia. • T here are two broadband seismometers in the Maldives.

S eis m om eters in Maldives Hdh. Hanimaadhoo Gdh. K aadedhdhoo

Seismic Network  E arthquake m onitoring by CIS N ( California Integrated S eis m ic Network ) We also observe the California Integrated Seismic Network [CISN], to monitors earthquakes across the world

S ea -level data network HD.Hanimaadhoo Hawaii Hulhule T he sea-level data network is established in Maldives in  callobration with Hawai sea level center T here are 3 tide gauges situated at three different locations in  S.Gan the Maldives.

WE NE E D HE L P -SO DOE S E VE R Y ONE !  We believe there is always room for improvement.  T he Maldives Meteorological Service is really short of trained staffs in areas like ; - System Softwares - Seismology - Forecasting - Observation - Calibration  Currently No staff trained in Doppler radar operations as well as it’s maintenance.

T HANK Y OU…