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Meteorological information for locust control operations FAO experience. national / international ops rain, temperature, wind weaknesses & solutions. Keith Cressman Locust Forecasting Office Rome, Italy. Desert Locust countries. Migration after summer. Migration after winter/spring. TUN.
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Meteorological information for locust control operationsFAO experience national / international ops rain, temperature, wind weaknesses & solutions • Keith Cressman • Locust Forecasting Office • Rome, Italy
Desert Locust countries Migration after summer Migration after winter/spring TUN MOR PAK IRN ALG LIB EGY SAU IND MAU OMN MLI NER CHD ERI YEM SUD DJI SOM ETH Recession area = 16 million sq. km Invasion area = 32 million sq. km (20% of world land mass) 2 / 9
Desert Locust programmes 3 / 9
Desert Locust information flow International - National - Field - FAO Desert Locust Information Service Locust Control Centre survey and control teams ( RAMSES data files, reports ) ( forms, eLocust data files ) 4 / 9
Current Desert Locust situation / forecast Tunisia Morocco Spring 2005 breeding Libya Algeria Western Sahara Gambia G. Bissau Guinea invading swarms 18 Oct 2004 Mauritania Cape Verde Mali Chad Niger Senegal Burkina Faso bands swarms 5 / 9
Weather thresholds Rain 25 mm in two consecutive months • > 17°C(copulating & laying) • > 15-26°C (take-off) • > 9-17°C (sustained flight) • < 7 m/s (take-off) • < 1800 m (flight heights) Temp varies if solitary/gregarious locusts Wind 8 / 9
Current weaknesses Potential solutions • increase rains stations • reduce transmission errors • indicate data requirements • regional workshop • use forecast products • poor rain station coverage • national station data incomplete / errors • LCC does not make use of data • weak LCC / NMS link • FAO/DLIS does not use forecast products • poor rain station coverage • national station data incomplete / errors • LCC does not make use of data • weak LCC / NMS link • FAO/DLIS does not use forecast products 9 / 9