Land Information System

I started the Land Information System (LIS) project in 2002, and it continues to be developed at NASA and used for a wide range of applications. LIS is a high performance land surface modeling and data assimilation system that won the NASA 2005 Software of the Year award. It integrates parallel and distributed computing technologies with modern land surface modeling capabilities, and establishes a framework for easy interchange of other land surface models. The software includes an ensemble of land surface models and can be run regionally or globally on grids with horizontal resolutions ranging from 2.5 degrees to 1 km. The software may execute serially or in parallel on various high performance computing platforms. In addition, the software developed has well defined, standard conforming interfaces and data structures to interface and interoperate with other Earth System models.

Developed with support from the Earth Science Technology Office (ESTO) Computational Technologies, LIS has helped advance the Earth-Sun division’s software engineering principles and practices, while promoting portability, interoperability and scalability. LIS is being used on the science teams for the currently orbiting Gravity Recovery and Climate Experiment (GRACE), the Tropical Rainfall Measurement Mission (TRMM) and the EOS-Aqua Advanced Microwave Scanning Radiometer-EOS (AMSR-E). It is also being prototyped as the software infrastructure to produce level 4 products from the future SMAP soil moisture mission.

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