Products - MODIS
IAGT Technical Services provides real-time data from the MODIS instruments on board two separate NASA satellites, Terra and Aqua, as they pass over the Auburn, NY ground station at the Institute for the Application of Geospatial Technology (www.iagt.org). Generally, four MODIS observations are collected per day. The raw MODIS data are ingested by the system, whereupon they undergo a significant amount of processing in order to create a Level 1B image. In addition to typical Level 1B MODIS scenes, the system also automatically creates numerous derivative products, including bowtie-corrected MODIS scenes, geolocation data, and thematic data such as cloud masks, fire locations, sea ice cover, and snow cover, and a JPG thumbnail for each of these viewable products. The system also has the ability to generate customized derivative products based on unique algorithms, which can be readily imported into the data processing routine.
IAGT’s MODIS Direct Broadcast system’s receiving hardware. The unit is mounted on the roof of the James T. Walsh Regional Economic Center on the campus of Cayuga Community College. In the left picture, the dish is actively receiving data from the MODIS instrument. On the right, the MODIS receiving dish in "lock mode". The dish maintains this configuration when it is not actively receiving data.
Once data are collected and processed, they are held in our data archives for 30 days, unless otherwise flagged for extended storage. These data may be acquired through several methods, depending on the needs of the end user.
A typical bowtie and geo-corrected scene from our MODIS Direct Broadcast system. Depending where on the horizon the Aqua or Terra satellite is when the data are received, the range of scene extent can vary significantly. Coverage can extend as far south as Cuba, as far north as northern Hudson Bay, as far west as the Rocky Mountains, or as far east as the mid-Atlantic. Regardless of range, the scene area and file size generally remains the same.
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