Before the wet season kicks in many farmers are working hard to clear fields and get ready their crops for the upcoming rainy season across South East Asia.
In Thailand one of the main methods of doing this is with fire, it removes old and dead plants in the cheapest and quickest way possible, albeit not very good for the environment.
The image above shows a visible satellite image from NASA on the 20th of March. It is fairly easy to pick out where smoke from the clear cropping fires smothers most of the northern portions of the country.
Most of the fires were lit on purpose but the weather conditions in the region combined with a severe drought helped many of the blazes to burn out of control and spread more fire and smoke across the region.
The second image below also shows at how many were actually burning at that time. Most if not all being man made.