One-year assessment of a nowcast/forecast system for Galveston Bay

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dc.acquisition-srcDownloaded from-Engineering Village 2en_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorSchmalz Jen_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T17:16:24Z
dc.date.available2010-02-15T17:16:24Z
dc.date.issued2001en_US
dc.degreeen_US
dc.description1041-1060en_US
dc.description-otheren_US
dc.description.abstractThe National Ocean Service had developed a nowcast/forecast system for Galveston Bay using a modified version of the Blumberg-Mellor (1987) three-dimensional hydrodynamic model as discussed by Schmalz (1996, 2001). The nowcast component works directly from the PORTS universal flat file format (PUFFF) files while during the forecast the NWS Aviation, River, and Extratropical Storm Surge Models are used to provide the meteorological, surface water inflow, and Gulf of Mexico subtidal water level forcings, respectively. In addition, a one-way coupled fine resolution Houston Ship Channel model (Schmalz, 2000b) has also been incorporated into the system. Daily 24 hour nowcasts and 36 hour forecasts of water surface elevation and currents, as well as near-surface and near-bottom temperature and salinity have been performed using both bay and channel models in a pseudo-operational setting since April 2000. Herein, nowcast and forecast results are assessed over the one-year period April 2000 through March 2001 based on the NOS (1999) formal acceptance statistical criteria. In general, the water surface elevation nowcast and forecast results meet or exceed the acceptance criteria except for the timings of high and low waters. For principal component direction currents, the acceptance criteria are generally met except for the timings of the zero crossings (slack before ebb and slack before flood), peak ebb, and peak flood currents. In addition, the ability of the system to forecast low water level events associated with cold frontal passages is also assessed. In conclusion, a physical interpretation of the statistical evaluation is presented and plans for additional improvements are discusseden_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23346
dc.latitudeen_US
dc.locationen_US
dc.longitudeen_US
dc.notesCompilation and indexing terms, Copyright 2004 Elsevier Engineering Information, Incen_US
dc.placeSt. Petersburg, FL, United Statesen_US
dc.publisherAmerican Society of Civil Engineersen_US
dc.relation.ispartofseries50950.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesEstuarine and Coastal Modeling: Proceedings of the Seventh International Conferenceen_US
dc.subjectAtmospheric temperatureen_US
dc.subjectForecastingen_US
dc.subjectHydrodynamicsen_US
dc.subjectMathematical modelsen_US
dc.subjectMeteorologyen_US
dc.subjectOcean currentsen_US
dc.subjectOceanographyen_US
dc.subjectSaline wateren_US
dc.subjectStatistical methodsen_US
dc.subjectSurface watersen_US
dc.subjectThree dimensionalen_US
dc.subjectWateren_US
dc.subjectWater levelsen_US
dc.titleOne-year assessment of a nowcast/forecast system for Galveston Bayen_US
dc.typeCONFen_US
dc.universityen_US
dc.vol-issue()en_US

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Galveston Bay Bibliography
GBIC Abstracts (full text not available through Jack K. Williams Library)