GFIMS is offering an experimental version of MODIS KML time series showing active fire/hotspot detections by animating the location of fires that have occurred in the region in the last 48 hours.
There are a few issues to keep in mind:
- Time is in UTC.
- The MODIS sensor, on board the Terra and Aqua satellites, both circle the earth 2 times a day (morning and afternoon), This means there are 4 observations of active fire/hotspot detections throughout the day. This information does NOT represent fires occurring at all times over the last 48 hours, but at 4 periods of a given day.
- The satellites circle the earth at a steady rate, and it only captures swaths of information at a time. This means that if the satellite captures a fire in Australia, it does not necessarily mean that there is not a fire occurring in the US, it’s just that the satellite is capturing fire information over Australia at that moment.
- Active fire/hotspot detections represent the center of a 1km pixel. The fire is not necessarily 1km in size, nor is it the exact location of the fire event.
For further information regarding MODIS active fire/hotspot detections, please visit the FAQ section.