de.pangaea.dataset938685 und dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2025-03-12T08:29:59Z https://doi.pangaea.de/10.1594/PANGAEA.938685 <gco:CharacterString>Unshielded precipitation gauge collection efficiency with wind speed and hydrometeor fall velocity</gco:CharacterString> 2021-11-29T09:43:33 publication https://doi.org/10.1594/PANGAEA.938685 Hoover, Jeffery
jeffery.hoover@ec.gc.ca
https://orcid.org/0000-0003-2350-8379 information author Earle, Michael E
michael.earle@ec.gc.ca
author Joe, Paul
paul.joe@hotmail.com
author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital Collection efficiency transfer functions that compensate for wind-induced collection loss are presented and evaluated for unshielded precipitation gauges. Three novel transfer functions with wind speed and precipitation fall velocity dependence are developed, including a function from computational fluid dynamics modelling (CFD), an experimental fall velocity threshold function (HE1), and an experimental linear fall velocity dependence function (HE2). These functions are evaluated alongside universal (KUniversal) and climate-specific (KCARE) transfer functions with wind speed and temperature dependence. Transfer function performance is assessed using 30-minute precipitation event accumulations reported by unshielded and shielded Geonor T-200B3 precipitation gauges over two winter seasons. The latter gauge was installed in a Double Fence Automated Reference (DFAR) configuration. Estimates of fall velocity were provided by a Precipitation Occurrence Sensor System (POSS). The CFD function reduced the RMSE (0.08 mm) relative to KUniversal (0.20 mm), KCARE (0.13 mm), and the unadjusted measurements (0.24 mm), with a bias error of 0.011 mm. The HE1 function provided a RMSE of 0.09 mm and bias error of 0.006 mm, capturing well the collection efficiency trends for rain and snow. The HE2 function better captured the overall collection efficiency, including mixed precipitation, resulting in a RMSE of 0.07 mm and bias error of 0.006 mm. These functions are assessed across solid and liquid hydrometeor types and for temperatures between -22 °C and 19 °C. The results demonstrate that transfer functions incorporating hydrometeor fall velocity can dramatically reduce the uncertainty of adjusted precipitation measurements relative to functions based on temperature. completed Hoover, Jeffery
jeffery.hoover@ec.gc.ca
https://orcid.org/0000-0003-2350-8379 information principalInvestigator catch efficiency collection efficiency precipitation amount precipitation gauge Precipitation Occurrence Sensor System unshielded theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation -79.78 -79.78 44.23 44.23 2013-11-17T07:30:00 2015-04-23T05:00:47 2.0 2.0 DATE/TIME thematicClassification HEIGHT above ground physicalMeasurement m m Precipitation physicalMeasurement DFAR - Double Fence Automated Reference mm mm Precipitation physicalMeasurement Unshielded mm mm Wind speed physicalMeasurement m/s m/s Temperature, air physicalMeasurement °C °C Precipitation description thematicClassification Fall velocity physicalMeasurement mode m/s m/s Fall velocity physicalMeasurement mean m/s m/s Precipitation physicalMeasurement KUniversal - Universal transfer function; adjusted unshielded mm mm Precipitation physicalMeasurement KCARE - Climate-specific transfer function; adjusted unshielded mm mm Precipitation physicalMeasurement CFD - Computational fluid dynamics modelling function; adjusted unshielded mm mm Precipitation physicalMeasurement HE1 - Experimental fall velocity threshold function; adjusted unshielded mm mm Precipitation physicalMeasurement HE2 - Experimental linear fall velocity dependence function; adjusted unshielded mm mm text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.938685?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: CARE_SPICE (CAR, Centre for Atmospheric Research Experiments) * LATITUDE: 44.230000 * LONGITUDE: -79.780000 * DATE/TIME START: 2013-11-17T00:00:00 * DATE/TIME END: 2015-04-23T00:00:00 * ELEVATION: 251.0 m * LOCATION: Canada * CAMPAIGN: SPICE * BASIS: Monitoring station * METHOD/DEVICE: Monitoring station 2013-11-17T00:00:00 Supplement to <gco:CharacterString>Unshielded precipitation gauge collection efficiency with wind speed and hydrometeor fall velocity</gco:CharacterString> 2021-01-01 publication https://doi.org/10.5194/hess-25-5473-2021 Hoover, Jeffery
jeffery.hoover@ec.gc.ca
https://orcid.org/0000-0003-2350-8379 information author Earle, Michael E
michael.earle@ec.gc.ca
author Joe, Paul
paul.joe@hotmail.com
author Sullivan, Pierre E https://orcid.org/0000-0003-1454-3391 information author documentDigital Hydrology and Earth System Sciences 25(10) 5473-5491 Further details <gco:CharacterString>Precipitation gauge collection efficiency with wind speed and hydrometeor fall velocity - README</gco:CharacterString> documentHardcopy