CISL Annual Report 2005 > CISL research plans

Data Assimilation Research plans

Data assimilation research will continue to use the Data Assimilation Research Testbed (DART) as a substrate for considering new models. Some specific projects include:

• A coherent global/regional extension using the Community Atmospheric Model (CAM) as boundary conditions coupled to the Weather Research Forecasting Model

• Tests to extend the CAM filtering system to the Whole Atmosphere Chemistry and Climate Model

• Evaluating a mesosphere model (ROSE) with upper atmosphere observations

Research on observational aspects will continue to quantify the information content of GPS observations and the impact of atmospheric radiation measurements (ARM) on improving atmosphere assimilations.

Methodological research will use DART to evaluate model error and improve model parameterizations. Two continuing projects using CAM are to determine gravity wave drag coefficients and to tune convective parameterizations.

A new area of DA research will be an extension of DART to include a smoothing filter that can take advantage of both past and future observations in order to estimate the state. This will be applied to inverse problems involving sources of carbon monoxide.