Moderate Resolution Imaging Spectroradiometer (MODIS) from Terra and Aqua mission, provides high radiometric sensitivity (12 bit) in 36 spectral bands ranging in wavelength from 0.4 micrometres to 14.4 micrometres. Two bands are imaged at a nominal resolution of 250 m at nadir, with five bands at 500 m, and the remaining 29 bands at 1 km. A +/- 55-degree scanning pattern at the EOS orbit of 705 km achieves a 2,330-km swath and provides global coverage every one to two days. The main objective of MODIS is to enhance our understandings on global dynamics and processes occurring on the land, in the oceans and in the lower atmosphere, and these data are also essential in the development of validated, global and interactive Earth system models.

Terra and Aqua satellites are part of the Morning and the Afternoon Constellations (the M-Train and the A-Train) respectively, a series of polar-orbiting satellites following each other, passing the equator at 10:30, 22:30 for the M-Train and 13:30, 01:30 for the A-Train. This allows member satellites of each groups to act as one platform with large amount of instruments.

The MODIS data stored at the NEODC are available to registered NEODC users. To obtain access to the data please register as a NEODC user. If you already are a NEODC registered user, skip this step. If you have forgotten your NEODC user ID and/or password, please contact the NEODC helpdesk at neodc@rl.ac.uk.

MODIS Surface Reflectance Product is available in HDF-EOS format, spanning from the start of the mission until present.

Currently, the Terra and Aqua Surface Reflectance Products (MOD09 and MYD09 respectively) are available.

For further information about the datasets and the mission, please consult the following documents:

• NASA MODIS Website (Link)
• NASA Terra Website (Link)
• NASA Aqua Website (Link)
• NASA EOS Website (Link)
• NASA A-Train Website (Link)

For assistance accessing this dataset please contact the NEODC helpdesk