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<br />been prepared for this task; but because NOHRSC's SNODAS system was not implemented until <br />recently and is still in the testing phase, data are not being sent to SNODAS yet. <br /> <br />14. Develop a scheme to merge (mosaic) SAA radar-estimated SWEfieldsfrom several <br />adjoining radars. This was achieved using a lookup-table method, based on the nearest radar's <br />data. In 2001, beam elevations were taken into account, allowing the lowest beam from any <br />radar to be used. <br /> <br />15. Provide an annual report describing accomplishments and findings. This was completed in <br />spring 2000 and is addressed in section 3.2. <br /> <br />16. Conduct initial operational testing of the new scheme of merging data sets from radar, <br />aircraft, satellite, SNOTEL, and snow courses within the upper Missouri River Basin. <br />Reclamation has considerable facilities within this basin and, therefore, is quite interested in <br />improved spring and early summer streamflow forecasting in the basin. Pending additional <br />support, this may begin in late 2002 at NOHRSC, during the second season of operation;al testing <br />for SNODAS. <br /> <br />17. Develop and implement procedures to test and evaluate the degree of improvement that <br />better NWS snowmelt and streamflow forecasts provide to Reclamation's water resources <br />management. The focus of this work will be to demonstrate how Reclamation benefits by using <br />improved streamflow forecasts, based on better model initialization and more accurate SWE and <br />snow cover distributions, partially based on NEXRAD estimates. This was not accomplished <br />during the period of effort because of delays in SNODAS implementation. Resources for this <br />task, however, were used to convert the SAA into the more generic PAA. <br /> <br />18. Provide afinal report describing accomplishments and findings. This report completes this <br />task. <br /> <br />3. TOPICS IN PREVIOUS REPORTS <br /> <br />Important research results have been summarized in two SAA annual reports. In addition, a <br />supplemental SAA report (Holroyd, 1999) presented research that was partly supported by GCIP. <br />The following subsections are from the summary sections of the annual reports and from the <br />supplemental report abstract. <br /> <br />3.1 Annual Report 1998 (Super, 1998) <br /> <br />This applied research addressed two tasks related to estimating snowfall with NEXRAD radar <br />measurements and Reclamation's SAA. The first task was to begin development of a range <br />correction scheme based on the measured vertical profile of reflectivity (VPR), converted into <br />vertical profiles of radar-estimated SWE (VPS). It has been shown that the VPS of Minnesota <br /> <br />6 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />