Terra
type: Platform
type: Concept
narrower: MODIS
hosts: MODIS

MODIS
type: Sensor
in platform: Aqua
in platform: Terra
definition: MODIS (or Moderate Resolution Imaging Spectroradiometer) is a key instrument aboard the Terra (originally known as EOS AM-1) and Aqua (originally known as EOS PM-1) satellites. Terra's orbit around the Earth is timed so that it passes from north to south across the equator in the morning, while Aqua passes south to north over the equator in the afternoon. Terra MODIS and Aqua MODIS are viewing the entire Earth's surface every 1 to 2 days, acquiring data in 36 spectral bands, or groups of wavelengths (see MODIS Technical Specifications). These data will improve our understanding of global dynamics and processes occurring on the land, in the oceans, and in the lower atmosphere. MODIS is playing a vital role in the development of validated, global, interactive Earth system models able to predict global change accurately enough to assist policy makers in making sound decisions concerning the protection of our environment.
broader: Aqua
broader: Terra
alternative label: Moderate-resolution Imaging Spectro-radiometer
source: about
type: Concept

in platform

Instrument
type: ConceptGroup
type: Collection
member: MODIS

Aqua
type: Platform
type: Concept
narrower: MODIS
hosts: MODIS