Introduction to data type
MODIS (or Moderate Resolution Imaging Spectroradiometer) is a key instrument aboard the Terra (EOS AM) and Aqua (EOS PM) 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).
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Potential application
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Global and continental mapping
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Monitoring of vegetation conditions
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Crop modelling and crop yield prediction
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Large disasters monitoring
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Snow cover and glaciers’ monitoring
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Atmosphere and ocean’s monitoring
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Availability (including suppliers details)
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Collection considerations (time of day, FOV, etc.)
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- You need to consider the time of day that you wish to collect your data, you also need to keep an eye on the weather for that day you choose.
- Another thing that you need to consider is you want to choose a day that is cloudless, this is so your images come out clear and cloudless.
Processing levels
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- Low
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Cost
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- Free through USGS: Earth Explorer
File format
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- Downloaded as a zip file
- IMG, RRD, AUX, and VSK files are found within the zip files
Coverage
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10km x 2330 km
Swath width = 2330km
Spatial, spectral, radiometric and temporal resolution
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- Spatial resolution: 250.0 m, 500.0 m, 1000.0 m
- Spectral resolution: 1000.0 m
- Radiometric resolution: 12 bit
- Temporal resolution: 1 day
Spectral range/bands
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Software requirements
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- PCI
- SNAP
- Geomatica
Processing requirements
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- Low
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Degree of difficulty
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- Low
