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Approved for public release; distribution is unlimited. ii REPORT DOCUMENTATION PAGEForm Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY) January 20062. REPORT TYPE AUTHOR(S)Luces, Saba A. and Cionco, Ronald M. 5f. WORK UNIT NUMBER PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) U.S. Army Research Laboratory Computational and Information Sciences Directorate Battlefield Environment Division (ATTN: AMSRD-ARL-CI-EM) White Sands Missile Range, NM 88002-5501 PERFORMING ORGANIZATION REPORT NUMBER ARL-TR-3706 SPONSOR/MONITOR'S ACRONYM(S) 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)U.S. Army Research Laboratory 2800 Powder Mill Road Adelphi, MD 20783-1145 SPONSOR/MONITOR'S REPORT NUMBER(S)ARL-TR-3706 DISTRIBUTION/AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. SUPPLEMENTARY NOTES ABSTRACTA prototype system of coupled mesoscale and microscale models was developed to produce an analysis that considered higherresolution terrain. Research was initiated to integrate the microscale code with the mesoscale code to attain higher-resolution meteorological forecasts for target areas and other localized areas on the battlefield. A step-wise approach was employed to develop a modular prototype that would first show improved winds using high-resolution diagnostic models, but then be capable of interchanging various components. The San Francisco Bay area was selected as the common simulation domain, since both models had already been run there in previous studies.