Observations for

Percent Occurrence of Climate Conditions Suitable for Malaria Transmission

Precipitation
(P > 80mm)

Temperature
(18°C < T < 32°C)

Relative Humidity
(RH > 60%)

Seasonal Climatic Suitability for Malaria Transmission

This map shows the number of months suitable for malaria transmission, based on climatological averages. Suitability is defined as the coincidence of precipitation accumulation greater than 80 mm, mean temperature between 18°C and 32°C, and relative humidity greater than 60%.

Temperature, precipitation and relative humidity are factors of mosquito development time as well as an indicator of Plasmodium parasite development within the mosquito vectors (Grover-Kopec et al., 2006).

Dataset Documentation

Precipitation and Temperature climatology are compiled on a 0.0375° x 0.0375° lat/lon grid from Direction Générale de la Météorologie of Madagascar. Relative Humidity climatology is compiled on a 2.5° x 2.5° lat/lon grid from NCEP/NCAR CDAS/Reanalysis.

This map is based on a theoretical model of climate data and is not based on actual malaria data.

Precipitation Climatology

Data
Monthly precipitation over land areas on a 0.0375° x 0.0375° lat/lon grid
Base Period for Climatology
1981-2010
Data Source
Direction Générale de la Météorologie of Madagascar

Temperature Climatology

Data
Monthly temperature over land areas on a 0.0375° x 0.0375° lat/lon grid
Base Period for Climatology
1981-2010
Data Source
Direction Générale de la Météorologie of Madagascar

Relative Humidity Climatology

Data
Monthly specific humidity data (converted to rh) on a 2.5° x 2.5° lat/lon grid
Base Period for Climatology
1981-2010
Data Source
National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR CDAS/Reanalysis)

Instructions

The default map displays the number of months suitable for malaria transmission over Madagascar.

The interface consists of a clickable map that allows users to generate customized analyses for a location of interest. When a desired location is clicked, four time series graphs are generated that provide analyses of how often suitability has occurred in the historical record (1981-2018).

The "Map Shows" drop down menu allows users to isolate a single climatic variable and show the percent occurrence of malaria suitability based on that variable.

The interface consists of a clickable map that allows users to generate customized time series graphs.


How to use this interactive map?

Helpdesks and Feedback

Contact DGM with any technical questions or problems with this Maproom.