HR: 10:50h
AN: H32A-03    [Abstracts]
TI: Multi-sensor Precipitation Reanalysis
AU: * Nelson, B
EM: brian.nelson@noaa.gov
AF: National Climatic Data Center, 151 Patton Ave, Asheville, NC 28801,
AU: Kim, D
EM: dongsoo.kim@noaa.gov
AF: National Climatic Data Center, 151 Patton Ave, Asheville, NC 28801,
AU: Seo, D
EM: dongjun.seo@noaa.gov
AF: Office of Hydrologic Development, 1325 East West Highway, Silver Spring, MD 20910,
AU: Seo, D
EM: dongjun.seo@noaa.gov
AF: University Corporation for Atmospheric Research, 1850 Table Mesa Dr, Boulder, CO 80307,
AB: The archive of the Next Generation Radar (NEXRAD) Level II and Level III data at the National Climatic Data Center (NCDC) provides a unique opportunity for developing a high-resolution rainfall climatology suitable for regional applications. The data from almost all of the Weather Surveillance Radars 1988-Dopplers (WSR-88D) are archived and can be accessed via the High Density Storage System (HDSS) at NCDC. The Level III Digital Precipitation Array (DPA) for several radars over North and South Carolina are used to develop a merged radar and rain gauge rainfall product that has hourly temporal resolution and 4x4 km2 spatial resolution. The operational multi-sensor precipitation estimation algorithm of the NWS river forecast centers is adapted to work in a reanalysis mode. Six radars over North and South Carolina are selected for development of the multi-sensor precipitation reanalysis. Each radar has been operational prior to 1996 and thus provides for a 10-year data set through 2005. Ultimately, data sets that are monthly, yearly, and seasonal averages and accumulations will be developed for studying the rainfall variability over a relatively long period (Approx. 10 years) and large spatial extent. This presentation describes the science issues, such as reduction of long term radar-to-radar biases, reduction of local small scale biases, parameter optimization via cross validation, and merging of multi-sensor data sets. Initial results are shared in this presentation. A beta version regional product is available via a THREDDS data server at NCDC.
DE: 1833 Hydroclimatology
DE: 1840 Hydrometeorology
DE: 1853 Precipitation-radar
DE: 1854 Precipitation (3354)
SC: Hydrology [H]
MN: 2007 Fall Meeting