Bell, Michael A.

Blumenthal, Martin Benno

Ceccato, Pietro N.

Connor, Stephen J.

Omumbo, Judith A.

Thomson, Madeleine C.

Trzaska, Sylwia A.

Columbia University Academic Commons

Environmental Data and SurveillancePietro Ceccato, Michael Bell, Benno Blumenthal, Stephen Connor, Judy Omumbo, Madeleine Thomson, Sylwia TrzaskaGEO Meningitis Meeting Sept 26-27 2007Case surveillance alone = late warningFramework (Malaria Early Warning System)Analysis of Relationship between Climatic-Environmental Factors and Diseases Show evidences that climate and environmental factors influence diseasesEvidence of impact of climate variability on Malaria epidemics in Botswana (Thomson et al. Nature 2006), Evidence of impact of environmental variability on Malaria epidemics in Eritrea (Ceccato et al. AJTMH 2007 )Long-Term Forecasting…IRI Forecasting Rainfall Products Using measurements:From meteorological stations or From remotely-sensed images available free of charge via IRI Data LibraryShort-Term Forecasting…http://iridl.ldeo.columbia.edu/maproom/.Health/Monitoring Environmental Factors (Rainfall, Vegetation, Temperature)Rainfall EstimatesInterface to provide information on the current rainfall season compared with recent seasons Spatial resolution: 10kmAvailable every 10-daysContinuedVarious summary information is available for the specific point queriedRainfall AnomaliesProvide MODIS images 250m spatial resolution every 16-days to monitor vegetation and water bodiesVegetation and Water Bodies MonitoringExtract Vegetation Indices Automatic procedure to extract different vegetation indices (NDVI, EVI NDWI) and create temporal series through the InternetTraining Courtesy of DLIS, UN FAODesert LocustCairo, Egypt, 2004Eritrea: Red Sea CoastUN FAOCourtesy of DLIS, UN FAOWork in ProgressNASA (TOMS) Herman et al. (1997),Monitoring Dust from Remotely-Sensed DataMonitoring Aerosols using MISR ProductsUnpublished results from Linda Hunt (NASA LaRC/SSAI) and Michel Verstraete JRCMonitor amount of aerosolsMonitor the size of the aerosolsSeparate dust from smokeIntegrate IRI Data into WorldWind (NASA)How Can the Health Community Use the Data Library for Analyzing the Surveillance Data ? Provide a training on how to analyze data in relation to climate and environmental factors Provide the possibility to perform the analysis through the IRI Data Library (free software, accessible via Internet) 1. Clean the Data:– Convert surveillance weekly data to 10-days or monthly data– Resolve the problem of missing data– De-trend the data– Create anomalies … 2. Analyze Spatial and Temporal Distribution-0.500.511.525 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20Class 1Class 2Class 3Class 4 3. Analyze Relationship with Environmental factorsR2 for significant regression of NDVI anomaliesand concurrent malaria incidence anomaliesExample:Malaria incidence in relation to Vegetation pceccato@iri.columbia.eduInternational Research Institute for Climate and Society, The Earth Institute, Columbia University, Palisades, NY, USAhttp://iri.columbia.edu/

Environmental Data and Surveillance

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Environmental Data and Surveillance

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