Objective: To develop, evaluate, and validate
multi-scale land assimilation in a wide variety of applications.
Global: Off-line Land-surface Global Assimilation (OLGA) system à GLDAS:
Scale: 1km to 2 degree global land.
Focus: Land-atmosphere boundary, operational assimilation of remotely-sensed
surface observations.
Projects: NSIPP, DAO, GLDAS, etc.
Continental: Land Data Assimilation System (LDAS)
Scale: 1/8 degree, continental, real-time.
Focus: Real-time applications (agriculture, floods),
short forecasts, model
intercomparisons, TRMM.
Projects: GCIP, LBA, etc.
Regional: Monsoon90, Washita 92, SGP97,99,01
Scale: 30 to 1000 m, <10,000 km2, watershed focus.
Focus: hydrological controls, assimilation theory,
scaling, in-situ observations.
Projects: GSFC-MIT SGP97 Project.