[[Image:ev26221_KlyuchevskayaSopka.A2004012.0035.500m.jpg|thumb||250px|Ash plumes on Kamchatka Peninsula, eastern Russia]]
'''MODIS''' ('''Moderate-'''Bold text''''''Bold text''''''Bold text''''''Bold text'''''Italic text''resolution Imaging Spectroradiometer''') is a [[payload]] scientific instrument launched into [[Earth]] [[orbit]] by [[NASA]] in [[1999]] on board the [[Terra (satellite)|Terra]] (EOS AM) Satellite, and in 2002 on board the [[Aqua (satellite)|Aqua]] (EOS PM) satellite. The instruments capture data in 36 ppkjijj jij ijj jjhhh spectral bands ranging in wavelength from 0.4 µm to 14.4 µm and at varying spatial resolutions (2 bands @ 250m, 5 bands @ 500m and 29 bands @ 1km). Together the instruments image the entire earth every 1 to 2 days. They are designed to provide measurements in large-scale global dynamics including changes in Earth's [[cloud]] cover, [[radiation budget]] and processes occurring in the oceans, on land, and in the lower atmosphere.
[[Image:MODIS ATM solar irradiance.jpg|thumb|350px|Solar irradiance spectrum and MODIS bands.]]
