Fires inWest and Central Africa
Fires in Africa
22 December 2004
Fires were burning across central Africa on 21 December 2004. The widespread nature of the fires and the time of year indicates that these fires are being set intentionally for agricultural purposes. Though not necessarily immediately hazardous, such large-scale burningand the resulting smokecan have a strong impact on weather, climate, human health, and natural resources. The following images were captured by the Moderate Resolution Imaging Spectroradiometer (MODIS).
Latest Modis Scenes from West to East:
Aqua satellite
21 December 2004
Aqua Satellite
21 December 2004
Carbon Monoxide over Africa
November marks the beginning of the fire season in the Sahel, where fire is used to clear land and prepare fields for planting. Such fires are not harmful of themselves, but they do release particles and gases into the atmosphere that impact climate and human health. One of the gases released in combustion is carbon monoxide, so it is not surprising that the Measurements of Pollution in the Troposphere (MOPITT) instrument aboard the NASAs Terra satellite detected enhanced levels of carbon monoxide (CO) over Central and West Africa in November 2004.
The false-color image above shows carbon monoxide concentrations at 700 hPa in the atmosphere (about 3 km altitude) during the week of November 21-28, 2004. Missing data due to persistent cloud coverage are color-coded in gray. Red and yellow colors show the CO produced by the vegetation fires and being transported by the South-East Trade winds out onto the Atlantic Ocean. Somewhat enhanced CO concentrations are also evident in parts of Southern Africa. As the fire season starts in West-Central Africa, the vegetation fires in the Southern part of the continent are dying down with the onset of the wet season. The fire season in West-Central Africa typically runs from November to April.
NASA image created by Jesse Allen, EarthObservatory, using data provided courtesy of the NCAR and University of Toronto MOPITTteams.
For background information on theFire Situation in Africa see:
RegionalWildland Fire Networks (AfriFireNet) and
IFFN Country Reports on CentralAfrican countries
