MODIS

Importing MODIS Products with ENVI

ENVI can open and process most MODIS HDF data.  However, the data formats and specific processing steps differ for daily scenes and the various domain products.  Daily scenes have geographic coordinate information embedded in the file.  Instructions for importing these data are covered in another FAQ.  MODIS products are typically distributed using the sinusoidal projection in 10º tiles.  Instructions for processing several types of data are described below. 

What is MODIS?

MODIS is an extensive program using sensors on two satellites that each provide complete daily coverage of the earth.  The data have a variety of resolutions; spectral, spatial and temporal.  Because the MODIS sensor is carried on both the Terra and Aqua satellites, it is generally possible to obtain images in the morning (Terra) and the afternoon (Aqua) for any particular location.  Night time data are also available in the thermal range of the spectrum.  You should consider time of day when ordering a scene for a specific day.

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