Presenter: Benjamin Johnson (National Center for Atmospheric Research)

Description:
The Data Assimilation Research Testbed (DART) provides the ocean science community with means to implement data assimilation techniques within oceanographic, cryospheric and biogeochemical models. DART capabilities at NCAR have been significantly expanded in the latest "Manhattan" release. This poster presents recent developments in DART that are of interest to the ocean science community including: enhanced support for models such as POP2, MITgcm-ocean, FESOM, ROMS, CICE and N-BLING; capability to assimilate sea surface chlorophyll from NASA's AQUA/MODIS and VIIRS instruments; support for 'verification observations' through the use of precomputed forward operators; a novel adaptive inflation algorithm suitable for assimilation applications in which observations are concentrated in specific sectors of the overall domain; already-processed World Ocean Database observations available to users; atmospheric forcing files from an 80-member CAM6 reanalysis; searchable, version-controlled documentation. The poster also presents a roadmap of tools currently in development that will become available in an upcoming release of DART.