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Workshop Sustaining

National Meteorological

Services –

Strengthening WMO

Regional and Global

Centers

Ajith WeerawardaneDepartment of Meteorology

Colombo, Sri Lanka.

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SRI LANKA

Land Area - 65,525 Sq.km

Length of coast line – 1, 760 km

Topography – Highland massif

surrounded by vast area of lowlands

Population - 20.87 Million

Pop. Density – 309 per Sq.km

Average Rainfall – 1,815 mm

(ranges between 900 and 5,000+)

Average Temperature (lowlands)–27.5C

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Four Rain Seasons

79.5 80.0 80.5 81.0 81.5 82.05.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

0 m m

200 m m

500 m m

1000 m m

1500 m m

2000 m m

3000 m m

3500 m m

SOUTHW EST MONSOON (MAY TO SEPTEMBER)

79.5 80.0 80.5 81.0 81.5 82.05.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

0 m m

200 m m

400 m m

500 m m

700 m m

800 m m

1000 m m

3500 m m

SECOND INTERMONSOON (OCTOBER TO NOVEMBER)79.5 80.0 80.5 81.0 81.5 82.0

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

0 m m

200 m m

400 m m

600 m m

800 m m

1000 m m

1200 m m

1400 m m

NORTHEAST MONSOON (DECEMBER TO FEBRUARY)

79.5 80.0 80.5 81.0 81.5 82.05.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

0 mm

100 m m

200 m m

300 m m

500 m m

600 m m

700 m m

3500 m m

FIRST INTERMONSOON (MARCH TO APRIL)

SEASON Southwest Monsoon

Northeast Monsoon

First Intermonsoon

Second Intermonsoon

PERIOD May-Sep Dec-Feb Mar-Apr Oct-Nov

RAINFALL 546 mm 459 mm 260 mm 548 mm

M A M J J A S O N D J F

IM1 SW Monsoon IM2 NE Monsoon

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1. India Meteorological Department (IMD) at New Delhi2. Japan Meteorological Administration (JMA) at Tokyo

DoM of Sri Lanka use the Meteorological products of the following Regional Specialized Meteorological Centers

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1. NWP products2. satellite imagers and products3. Outgoing Long wave Radiation 4. Monsoon on set

Use following products from IMD RSMC

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1. NWP products2. High Resolution Global Spectral Model (TL 959)

Use following products from JMA RSMC

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1. Forecast Severe Weather conditions2. Improve lead-time of warnings3.Improve interaction of NMC with uses

Objectives of WMO’s Severe Weather Forecasting Demonstration Project

Products used from ECMWF 1. EFI (Extreme Forecast Index) 2. EPS (Ensemble Prediction System)

What we expect more from These Centers

1.Colaborative research works and share the research out puts.

2.Help for the capacity building.

3.Help to run WRF at our own Department.

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Thank you