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Which among the following MODIS data products corresponds to level 1 processing?
The Level 1A, Level 1B, geolocation and cloud mask products and the Higher-level MODIS land and atmosphere products are produced by the MODIS Adaptive Processing System (MODAPS), and then are parceled out among three DAACs for distribution.
What is the difference between MODIS Terra and Aqua?
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. According to my experience, both products perform very similarly for vegetation change detection.
What is MODIS imagery?
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.
Where can I find information about MODIS products?
This section provides some detail for each product individually, introducing you to the products, explaining the science behind them, and alerting you to known areas of concern with the data products. Additional information about these products can be obtained by going to the appropriate URL’s noted below.
How to get field data from MODIS / VIIRS?
To learn more about the data format, go to the Documentation Download pre-processed subsets for 3000+ field and flux tower sites for validation of models and remote sensing products. The goal of the Fixed Sites Subsets Tool is to prepare summaries of selected data products for the community to characterize field sites.
How long does it take to get data from MODIS?
Users specify a site by entering the site’s geographic coordinates and the area surrounding that site, from one pixel up to 201 x 201 km. The tool is expected to take up to 60 minutes to complete the processing, and you will receive an email message containing the URL where you can download the subset data and access interactive visualizations.
What are subsets of MODIS and VIIRS used for?
These MODIS/VIIRS Subsetting and Visualization services provide user-defined subsets of selected MODIS and VIIRS Land Products at a scale useful for field researchers in easy-to-use formats and are offered in collaboration with the Land Processes DAAC ( LP DAAC ).