Digital Earth Emissivity Information System (DEEIS) - Motivation
Motivation
Land emissivity is a crucial piece of information for many important applications and products such as numerical weather prediction (NWP) forecast systems, land data assimilation systems, global precipitation retrieval over land, surface temperature retrieval, land sub-surface parameter retrievals, etc. A collection of emissivity information over a variety of temporal, spatial, and spectral scales from both infrequent, high spatial and low spectral resolution to frequent low spatial and high spectral resolution products can result in more accurate global retrievals from satellite observations. Such a global monitoring system consisting of detailed and specific data is also vital towards the understanding and monitoring of surface water and energy budgets. With improved understanding of emissivity and more accurate retrievals, more data from satellites can be assimilated into NWP forecast systems and land data assimilation systems. With more satellite data assimilated into NWP systems, weather forecasting will improve.
The motivation of DEEIS can thus be summarized in these key points:
- Satellite data assimilation into numerical weather prediction (NWP) forecast systems
- Global land data assimilation systems
- Global surface temperature retrievals
- Understanding and monitoring surface water and energy budgets
- Improved surface characterization urgently needed to advance the GPM-era precipitation over land algorithms
- Retrieval accuracy for other thermodynamic parameters (e.g., Ts, CO, O3, H2O…)
