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.
How does MODIS work?
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.
What are the possible source of MODIS data collection?
As just noted, MODIS products are available from several sources. MODIS Level 1 and atmosphere products are available through the LAADS web . Land Products are available through the Land Processes DAAC at the U. S. Geological Survey EROS Data Center (EDC).
How do I get MODIS data?
- Step 1: Define Your Study Area (AOI) ...
- Step 2: Define the Data That You Want to Download. ...
- Step 3: Define Selection Criteria. ...
- Step 4: View Results & Select Data to Order / Download. ...
- Step 5: Download Your Data.
What is data format for MODIS?
A complete dataset has a spatial resolution of 1 km and there are 36 bands of data. The data are distributed as digital numbers in 16 bit unsigned integer format .
What is Aqua and Terra?
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.
How often is MODIS data updated?
MODIS fire detection data and products are continuously updated and published year round to provide temporal and spatial coverage for the variable fire conditions that occur year round on the North American continent. MODIS data are acquired and processed typically within one hour of acquisition.
Is MODIS active or passive?
Quickbird, WorldView, Landsat and MODIS are all passive sensors that measure only radiation emitted by the Sun and reflected or emitted by the Earth.
What is Aqua MODIS?
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.
What band is MODIS?
| Primary Use Band Spectral Radiance 2 | Surface/Cloud Temperature 31 9.55(300K) | 32 8.94(300K) | Cloud Top Altitude 33 4.52(260K) | 34 3.76(250K) |
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What is the spatial resolution of Landsat imagery?
Landsat 8 Operational Land Imager
Where can I get MODIS imagery?
You can obtain MODIS Atmosphere products from the same LAADS site that MODIS Daily scenes are distributed at: http://ladsweb.nascom.nasa.gov/data/search.html .
What is the difference between Aqua and Terra satellite?
The only difference is the data input . Terra circles a morning orbit and Aqua an afternoon orbit, which causes differences in solar zenith angle (also sensor view angle and azimuth angles) for daily MODIS images.
Is Aqua Terra a dress watch?
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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.
