What is MODIS imagery used for?
MODIS helps scientists determine the amount of water vapor in a column of the atmosphere and the vertical distribution of temperature and water vapor—measurements crucial to understanding Earth’s climate system.
How does MODIS collect data?
As the Aqua and Terra satellites orbit the earth, their MODIS instruments collect imagery of the same area on Earth approximately three hours apart. The entire Earth’s surface is imaged every one to two days, and the sensors work in tandem to optimize cloud-free surface viewing.
Where can I get MODIS data?
Data
- MODIS level 1 data, geolocation, cloud mask, and atmosphere products: http://ladsweb.nascom.nasa.gov/
- MODIS land products: https://lpdaac.usgs.gov/
- MODIS cryosphere products: http://nsidc.org/daac/modis/index.html.
- MODIS ocean color and sea surface temperature products: http://oceancolor.gsfc.nasa.gov/
What is a MODIS image?
The Moderate Resolution Imaging Spectroradiometer (MODIS) is a key instrument onboard the Earth Observing System (EOS) Terra and Aqua platforms, designed to monitor the Earth’s atmosphere, ocean, and land surface with a set of visible, NIR, MIR, and thermal channels.
Is MODIS a satellite?
The Moderate Resolution Imaging Spectroradiometer (MODIS) is a payload imaging sensor built by Santa Barbara Remote Sensing that was launched into Earth orbit by NASA in 1999 on board the Terra (EOS AM) satellite, and in 2002 on board the Aqua (EOS PM) satellite….
| Specifications | |
|---|---|
| Design life | 6 years |
What is data format for MODIS?
Daily MODIS Scenes – Level 1 The data are distributed as digital numbers in 16 bit unsigned integer format. These data should be converted to radiance values, surface reflectance values, and/or brightness/temperature values before performing any analysis.
What band is MODIS?
MODIS Spectral Bands
| Band | Reflected Range (nm) | Band Explanation |
|---|---|---|
| 1 | 620–670 | Shortwave/VIS |
| 2 | 841–876 | Shortwave/NIR |
| 3 | 459–479 | Shortwave/VIS |
| 4 | 545–565 | Shortwave/VIS |
How many bands are there in MODIS?
36 spectral bands
The MODIS instrument provides high radiometric sensitivity (12 bit) in 36 spectral bands ranging in wavelength from 0.4 µm to 14.4 µm. The responses are custom tailored to the individual needs of the user community and provide exceptionally low out-of-band response.
How often does the MODIS instrument view the Earth?
MODIS website informs a broad audience about MODIS data and products. The MODIS instrument is operating on both the Terra and Aqua spacecraft. It has a viewing swath width of 2,330 km and views the entire surface of the Earth every one to two days.
How are data products derived from MODIS observations?
The many data products derived from MODIS observations describe features of the land, oceans and the atmosphere that can be used for studies of processes and trends on local to global scales. As just noted, MODIS products are available from several sources.
How is the MODIS instrument on the Terra spacecraft?
The MODIS instrument is operating on both the Terra and Aqua spacecraft. It has a viewing swath width of 2,330 km and views the entire surface of the Earth every one to two days. Its detectors measure 36 spectral bands between 0.405 and 14.385 µm, and it acquires data at three spatial resolutions — 250m, 500m, and 1,000m.
How is Moderate Resolution Imaging Spectroradiometer ( MODIS ) used?
Moderate Resolution Imaging Spectroradiometer (MODIS) Corrected Reflectance Imagery is produced in near real-time (NRT) to provide natural looking images.