The Centre for Remote Sensing and Processing (CRISP) receives MODIS data from the Terra and Aqua satellites daily. This data allows CRISP to monitor environmental phenomena such as hotspots, as the MODIS data offers good spatial and temporal coverage of the Southeast Asia region.
After each Terra or Aqua pass received at the CRISP Ground Station, the raw data is processed to Level 1B and subsequently the MOD14 algorithm is run to detect hotspots within the pass. This Web GIS portal currently provides as default an image generated from the MODIS Level 1B data - bands 1(RED), 2(SWIR) and 31(Thermal,inverted) displayed as a false colour RGB image. This band combination enhances haze; thick haze, if present, may appear as yellowish smoke. An alternative band combination - bands 7(SWIR), 2(NIR), and 1(Red), similar to that used for the display of SPOT4 and SPOT5 quicklooks - is also available. You may add or remove any layer by ctrl-clicking on it in the layer selection box, and then pressing the refresh button. Any hotspots detected by the NASA MOD14 algorithm are displayed as red dots on the map.
When the main map is clicked once, the view either Zooms In, Pans or Zooms Out according to the selected navigation radio button on the right panel. Alternatively, click and drag on the main map to call up a box selection tool. This allows users to select a particular region of interest to zoom in to (note: the box selection tool is only active when the zoom-in or pan mode is selected). Clicking on the Reset Zoom button resets the zoom to the initial view.
This site is updated as soon as the latest MODIS pass is received and processed, with the default view always showing the most recent Terra day pass. Users can also select different dates or satellites (Terra or Aqua) to view.
When Query mode is chosen, clicking on the map will return a list of data from the MOD14 product for hotspots near the location clicked. Alternatively, selecting a rectangular region in the main map will return a list of data for hotspots within the selected region.
Users may choose different combinations of layers to display by ctrl-clicking on the layer selection box on the right panel.
This site is currently in beta testing. During this period there may be changes to the data and interface, as well as sporadic downtime while upgrading. As such, we recommend that this data should not be used for any mission-critical purposes for the time being.