Welcome to Subset.org

The volume of data flowing from orbiting sensors has increased dramatically in the past few years, and even more data will be received in the near future with the launch of NASA's Earth Observing System satellites. Datasets have increased in size from megabytes to terabytes. Data volumes of this magnitude are difficult to manage, especially when it comes to online access. It is just not practical to download a billion bytes of data representing measurements from multiple sensors over the whole world for a week when all that is needed is a even one orbit.

Subsetting provides the data consumer with the capability to reduce the size and complexity of the data ordered. This saves disk space on the user's system and greatly reduces the time required to download and process the data. The Science Data Subsetting Center has been established by the Information Technology and Systems Center (ITSC) at the University of Alabama in Huntsville (UAH) in conjunction with NASA. The center provides a variety of subsetting tools to meet your data processing needs.