A Real-Time Online Data Product that Automatically Detects Easterly Gap-Flow Events and Precipitation Type in the Columbia River Gorge
A real-time, hourly updated, online graphical data product that displays the depth and strength of easterly gap flow in the Columbia River Gorge using a 915-MHz Doppler wind profiler is presented. During precipitation events, this data product also displays observed precipitation accumulation and di...
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| Veröffentlicht in: | Journal of atmospheric and oceanic technology 2018-10, Vol.35 (10), p.2037-2052 |
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| container_title | Journal of atmospheric and oceanic technology |
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| creator | Neiman, Paul J. Gottas, Daniel J. White, Allen B. Schneider, William R. Bright, David R. |
| description | A real-time, hourly updated, online graphical data product that displays the depth and strength of easterly gap flow in the Columbia River Gorge using a 915-MHz Doppler wind profiler is presented. During precipitation events, this data product also displays observed precipitation accumulation and diagnosed precipitation type using measurements provided by a collocated heated tipping-bucket rain gauge, an optical disdrometer, and temperature and relative humidity sensors. Automated algorithms that determine the existence and depth of the gap flow, as well as precipitation type, are described. The Columbia River Gorge is the only major gap in the Cascade Mountains of Oregon and Washington. Consequently, both easterly and westerly directed gap-flow events are common in this region. Especially during late autumn and winter, easterly gap flow can cause hazardous and damaging weather (e.g., snow, freezing rain, and strong winds) in the Portland, Oregon–Vancouver, Washington metropolitan area. The product described here was developed to help forecasters at the Portland National Weather Service Forecast Office monitor cool-season easterly gap-flow events in order to provide situational awareness and guide warnings to the public about potential weather-related hazards. |
| doi_str_mv | 10.1175/JTECH-D-18-0088.1 |
| format | Article |
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Office of Oceanic and Atmospheric Research</creatorcontrib><description>A real-time, hourly updated, online graphical data product that displays the depth and strength of easterly gap flow in the Columbia River Gorge using a 915-MHz Doppler wind profiler is presented. During precipitation events, this data product also displays observed precipitation accumulation and diagnosed precipitation type using measurements provided by a collocated heated tipping-bucket rain gauge, an optical disdrometer, and temperature and relative humidity sensors. Automated algorithms that determine the existence and depth of the gap flow, as well as precipitation type, are described. The Columbia River Gorge is the only major gap in the Cascade Mountains of Oregon and Washington. Consequently, both easterly and westerly directed gap-flow events are common in this region. Especially during late autumn and winter, easterly gap flow can cause hazardous and damaging weather (e.g., snow, freezing rain, and strong winds) in the Portland, Oregon–Vancouver, Washington metropolitan area. The product described here was developed to help forecasters at the Portland National Weather Service Forecast Office monitor cool-season easterly gap-flow events in order to provide situational awareness and guide warnings to the public about potential weather-related hazards.</description><identifier>ISSN: 0739-0572</identifier><identifier>EISSN: 1520-0426</identifier><identifier>DOI: 10.1175/JTECH-D-18-0088.1</identifier><language>eng</language><publisher>Boston: American Meteorological Society</publisher><subject>Airports ; Algorithms ; Atmospheric precipitations ; Automation ; Channel flows ; Cold ; Displays ; Doppler sonar ; ENGINEERING ; Flow ; Freezing ; Freezing precipitation ; Freezing rain ; Hygrometers ; Internet ; Meteorological services ; Meteorology & Atmospheric Sciences ; Metropolitan areas ; Mountains ; Nowcasting ; Orographic effects ; Precipitation ; Rain ; Rain gauges ; Real time ; Relative humidity ; Rivers ; Situational awareness ; Snow ; Strong winds ; Velocity ; Water depth ; Weather ; Weather forecasting ; Wind ; Wind profilers ; Winds ; Winter</subject><ispartof>Journal of atmospheric and oceanic technology, 2018-10, Vol.35 (10), p.2037-2052</ispartof><rights>Copyright American Meteorological Society Oct 2018</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c343t-41e8f968f777d753284b206108990df03adf1f2cc7d5ab9e9d6aa14e5349ae263</citedby><cites>FETCH-LOGICAL-c343t-41e8f968f777d753284b206108990df03adf1f2cc7d5ab9e9d6aa14e5349ae263</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,3668,27901,27902</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/1477808$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Neiman, Paul J.</creatorcontrib><creatorcontrib>Gottas, Daniel J.</creatorcontrib><creatorcontrib>White, Allen B.</creatorcontrib><creatorcontrib>Schneider, William R.</creatorcontrib><creatorcontrib>Bright, David R.</creatorcontrib><creatorcontrib>National Oceanic and Atmospheric Administration (NOAA), Silver Spring, MD (United States). Office of Oceanic and Atmospheric Research</creatorcontrib><title>A Real-Time Online Data Product that Automatically Detects Easterly Gap-Flow Events and Precipitation Type in the Columbia River Gorge</title><title>Journal of atmospheric and oceanic technology</title><description>A real-time, hourly updated, online graphical data product that displays the depth and strength of easterly gap flow in the Columbia River Gorge using a 915-MHz Doppler wind profiler is presented. During precipitation events, this data product also displays observed precipitation accumulation and diagnosed precipitation type using measurements provided by a collocated heated tipping-bucket rain gauge, an optical disdrometer, and temperature and relative humidity sensors. Automated algorithms that determine the existence and depth of the gap flow, as well as precipitation type, are described. The Columbia River Gorge is the only major gap in the Cascade Mountains of Oregon and Washington. Consequently, both easterly and westerly directed gap-flow events are common in this region. Especially during late autumn and winter, easterly gap flow can cause hazardous and damaging weather (e.g., snow, freezing rain, and strong winds) in the Portland, Oregon–Vancouver, Washington metropolitan area. The product described here was developed to help forecasters at the Portland National Weather Service Forecast Office monitor cool-season easterly gap-flow events in order to provide situational awareness and guide warnings to the public about potential weather-related hazards.</description><subject>Airports</subject><subject>Algorithms</subject><subject>Atmospheric precipitations</subject><subject>Automation</subject><subject>Channel flows</subject><subject>Cold</subject><subject>Displays</subject><subject>Doppler sonar</subject><subject>ENGINEERING</subject><subject>Flow</subject><subject>Freezing</subject><subject>Freezing precipitation</subject><subject>Freezing rain</subject><subject>Hygrometers</subject><subject>Internet</subject><subject>Meteorological services</subject><subject>Meteorology & Atmospheric Sciences</subject><subject>Metropolitan areas</subject><subject>Mountains</subject><subject>Nowcasting</subject><subject>Orographic effects</subject><subject>Precipitation</subject><subject>Rain</subject><subject>Rain gauges</subject><subject>Real time</subject><subject>Relative humidity</subject><subject>Rivers</subject><subject>Situational awareness</subject><subject>Snow</subject><subject>Strong winds</subject><subject>Velocity</subject><subject>Water depth</subject><subject>Weather</subject><subject>Weather forecasting</subject><subject>Wind</subject><subject>Wind profilers</subject><subject>Winds</subject><subject>Winter</subject><issn>0739-0572</issn><issn>1520-0426</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNotkcFqGzEQhkVoIG7SB-hNtGclGml3pT0a23FbAinBPQtZO9sorFdbSZvgF-hzV67DHAZmvn-Yn5-Qz8BvAVR992O3WX1jawaaca71LVyQBdSCM16J5gNZcCVbxmslrsjHlF445yChWZC_S_qEdmA7f0D6OA5-RLq22dKfMXSzyzQ_20yXcw4Hm72zw3Cka8zocqIbmzLGMtjaid0P4Y1uXnEsCzt2RY_OTz4XVRjp7jgh9WO5hnQVhvmw95Y--VeMdBvib7whl70dEn5679fk1_1mVxw9PG6_r5YPzMlKZlYB6r5tdK-U6lQtha72gjfAddvyrufSdj30wjnV1XbfYts11kKFtaxai6KR1-TL-W5I2ZvkfHHy7MI4FkMGKqU01wX6eoamGP7MmLJ5CXMcy19GyJYLOFWh4Ey5GFKK2Jsp-oONRwPcnDIx_zMxawPanDIxIP8BtSl_ZQ</recordid><startdate>201810</startdate><enddate>201810</enddate><creator>Neiman, Paul J.</creator><creator>Gottas, Daniel J.</creator><creator>White, Allen B.</creator><creator>Schneider, William R.</creator><creator>Bright, David R.</creator><general>American Meteorological Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7TN</scope><scope>7UA</scope><scope>7XB</scope><scope>88F</scope><scope>88I</scope><scope>8AF</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>H8D</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>L7M</scope><scope>M1Q</scope><scope>M2O</scope><scope>M2P</scope><scope>MBDVC</scope><scope>P5Z</scope><scope>P62</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>S0X</scope><scope>OTOTI</scope></search><sort><creationdate>201810</creationdate><title>A Real-Time Online Data Product that Automatically Detects Easterly Gap-Flow Events and Precipitation Type in the Columbia River Gorge</title><author>Neiman, Paul J. ; Gottas, Daniel J. ; White, Allen B. ; Schneider, William R. ; Bright, David R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c343t-41e8f968f777d753284b206108990df03adf1f2cc7d5ab9e9d6aa14e5349ae263</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Airports</topic><topic>Algorithms</topic><topic>Atmospheric precipitations</topic><topic>Automation</topic><topic>Channel flows</topic><topic>Cold</topic><topic>Displays</topic><topic>Doppler sonar</topic><topic>ENGINEERING</topic><topic>Flow</topic><topic>Freezing</topic><topic>Freezing precipitation</topic><topic>Freezing rain</topic><topic>Hygrometers</topic><topic>Internet</topic><topic>Meteorological services</topic><topic>Meteorology & Atmospheric Sciences</topic><topic>Metropolitan areas</topic><topic>Mountains</topic><topic>Nowcasting</topic><topic>Orographic effects</topic><topic>Precipitation</topic><topic>Rain</topic><topic>Rain gauges</topic><topic>Real time</topic><topic>Relative humidity</topic><topic>Rivers</topic><topic>Situational awareness</topic><topic>Snow</topic><topic>Strong winds</topic><topic>Velocity</topic><topic>Water depth</topic><topic>Weather</topic><topic>Weather forecasting</topic><topic>Wind</topic><topic>Wind profilers</topic><topic>Winds</topic><topic>Winter</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Neiman, Paul J.</creatorcontrib><creatorcontrib>Gottas, Daniel J.</creatorcontrib><creatorcontrib>White, Allen B.</creatorcontrib><creatorcontrib>Schneider, William R.</creatorcontrib><creatorcontrib>Bright, David R.</creatorcontrib><creatorcontrib>National Oceanic and Atmospheric Administration (NOAA), Silver Spring, MD (United States). 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Office of Oceanic and Atmospheric Research</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Real-Time Online Data Product that Automatically Detects Easterly Gap-Flow Events and Precipitation Type in the Columbia River Gorge</atitle><jtitle>Journal of atmospheric and oceanic technology</jtitle><date>2018-10</date><risdate>2018</risdate><volume>35</volume><issue>10</issue><spage>2037</spage><epage>2052</epage><pages>2037-2052</pages><issn>0739-0572</issn><eissn>1520-0426</eissn><abstract>A real-time, hourly updated, online graphical data product that displays the depth and strength of easterly gap flow in the Columbia River Gorge using a 915-MHz Doppler wind profiler is presented. During precipitation events, this data product also displays observed precipitation accumulation and diagnosed precipitation type using measurements provided by a collocated heated tipping-bucket rain gauge, an optical disdrometer, and temperature and relative humidity sensors. Automated algorithms that determine the existence and depth of the gap flow, as well as precipitation type, are described. The Columbia River Gorge is the only major gap in the Cascade Mountains of Oregon and Washington. Consequently, both easterly and westerly directed gap-flow events are common in this region. Especially during late autumn and winter, easterly gap flow can cause hazardous and damaging weather (e.g., snow, freezing rain, and strong winds) in the Portland, Oregon–Vancouver, Washington metropolitan area. The product described here was developed to help forecasters at the Portland National Weather Service Forecast Office monitor cool-season easterly gap-flow events in order to provide situational awareness and guide warnings to the public about potential weather-related hazards.</abstract><cop>Boston</cop><pub>American Meteorological Society</pub><doi>10.1175/JTECH-D-18-0088.1</doi><tpages>16</tpages><oa>free_for_read</oa></addata></record> |
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| recordid | cdi_osti_scitechconnect_1477808 |
| source | American Meteorological Society; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection |
| subjects | Airports Algorithms Atmospheric precipitations Automation Channel flows Cold Displays Doppler sonar ENGINEERING Flow Freezing Freezing precipitation Freezing rain Hygrometers Internet Meteorological services Meteorology & Atmospheric Sciences Metropolitan areas Mountains Nowcasting Orographic effects Precipitation Rain Rain gauges Real time Relative humidity Rivers Situational awareness Snow Strong winds Velocity Water depth Weather Weather forecasting Wind Wind profilers Winds Winter |
| title | A Real-Time Online Data Product that Automatically Detects Easterly Gap-Flow Events and Precipitation Type in the Columbia River Gorge |
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