Defense Nuclear Agency, 6801 Telegraph Road, Alexandria, VA 22310- 3398

A -- HAZARD PREDICTION AND ASSESSMENT CAPABILITY WEATHER POC Michael Richman, Negotiator, (703) 325-6671, Scott G. Morton, Contracting Officer, (703) 325-1200. The Operational Multi-scale Environmental Grid Adaptive (OMEGA) model developed under contract DNA001-92-C-0076 is a key component of the Hazard Prediction and Assessment Capability (HPAC). It provides a high resolution capability to forecast weather with a non-hydrostatic model and to disperse hazardous nuclear, biological, and chemical materials in the atmosphere operationally in real time anywhere in the world. The prior development of OMEGA demonstrated the feasibility of using an unstructured adaptive grid of varying resolution from 1-100 km which can adapt to complex terrain, land/water boundaries, and other features as required. This effort will maintain and enhance a baseline weather and embedded hazard forecast model (with a similar or better model) to address user feedback, add additional source terms, implement additional meterological inputs, improve microphysics models, and reduce the minimum grid spacing to 100 meters to meet research objectives. A cloud model will also be incorporated to improve the accuracy of initial conditions and cloud forecasts. Validation cases will be accomplished and documented over various regions and seasons. In addition, further field tests are required to validate the capability, demonstrate the capability to support NBC assessments, and to support other programs. This procurement is not restricted. Contractor personnel will need a DoD security level of TOP SECRET. All requests for copies of the solicitation must be submitted to HQ DNA, ATTN: AM2, Michael Richman, 6801 Telegraph Road, Alexandria, VA 22310-3398. Information on DNA solicitations, already released, can be obtained by calling the DNA Hotline at (703) 325-1173. Reference RFP No. DNA001-95-R-0014 and Synopsis No. 95-14 (0025)

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