Clouds

Three Landsat scenes are required to cover the territory of Trinidad and Tobago (above left). However, land in this part of the world is almost continually affected by small scattered clouds. No cloud-free scenes were found in the archive, so for each of the three areas we used images from several different dates, chosing the greenest pixels to build up a cloud-free composite image (right).

Data source: Landsat 7 ETM+ from USGS EROS Data Center