Global Land Cover Facility 
Company . . . . . . . . . . Global Land Cover Facility
Industry . . . . . . . . . . . . Earth Science
Solution . . . . . . . . . . . . High Performance Repository & Web Query Interface
Background
In May of 1996 the Earth Science Information Partnership (ESIP) signed a cooperative agreement with NASA to build a large-scale web accessible repository for earth science datasets. The project would utilize storage technology previously reserved for supercomputer centers (IBM SP systems, 10 TB data, HPSS software), a powerful Java web query interface, an Informix database and a number of in-house research technologies in order to create one-stop shopping for scientists that required accurate, high-resolution earth science datasets. QuaTeams Team Leader Jim Humphries led the 8-person implementation team responsible for working with the customer on requirements, designing the end-to-end system, implementation, testing, and deployment of the entire system. QuaTeams Software Engineers Allan Tong, and Jim Kukla developed the software required for the project.
Needs
The customer of the system was a worldwide earth science research community who were engaged in studies ranging from urban growth and deforestation, to meteorology and farming and needed datasets that related to vegetative land cover and biophysical processes on the earth. They needed the ability to:
- Quickly locate datasets according to time period, coordinates, and data type.
- Browse and download from a large repositories of data (10 Terabytes to start).
- Create new aggregate products from GIS vector datasets, raster image datasets, and other specialized datasets.
Solution
Jim drafted the Technology Roadmap for the ESIP system that included a phased implementation of increasingly advanced functionality, from the low level data layout, database schema, and processing to the web query interface features. The first production release was available in 18 weeks and it consisted of a powerful Java applet web interface that displayed coverage areas for all of the datasets along with preview image overlays. The initial 10 TB of data included a wide range of raster image products (Landsat TM and MSS, AVHRR products) and GIS products (which included rivers, roads, railways, countries, contours, national boundaries, and vegetation indexes).
Result
The system was delivered on time and in continual use with new functionality updated regularly. In 2002 the system is still in wide use by researchers around the world. |