Fires purposely set to burn crop residues and get the land ready for the growing season are continuing as evidenced in this image from the MODIS instrument on the Aqua satellite. A longer, more detailed account of these types of fires can be found at this URL: http://www.nasa.gov/mission_pages/fires/main/world/20130326-indochina.html .
This natural-color satellite image was collected by the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua satellite on April 07, 2013. Actively burning areas, detected by MODIS's thermal bands, are outlined in red.
NASA image courtesy Jeff Schmaltz LANCE/EOSDIS MODIS Rapid Response Team, GSFC. Caption by Lynn Jenner.