BEGIN:VCALENDAR VERSION:2.0 PRODID:-//DTU.dk//NONSGML DTU.dk//EN CALSCALE:GREGORIAN BEGIN:VEVENT DTSTART:20190805T080000Z DTEND:20190805T100000Z SUMMARY:MSc defence Stefano Ribaudo DESCRIPTION:
Supervisor: Senior researcher Mark C. Kelly, DTU Wind Energy
\n
\nTitle: Conditional Error Statistics for Offshore Winds, from WRF Modelling and ASCAT Satellite Data
\n“Following the findings of Hahmann et al. (2015) we observe a bias in WRF simulations when compared to anemometer or Lidar measurements in the North Sea. This bias is expressed as the difference between average WRF model output and average measurements. This thesis’s objective is to define and analyze WRF error metrics against ASCAT satellite data over the North sea and at 10 m height.
Initially we’ll look at how the data is handled and converted through interpolation to enable the comparison. This will allow for the computation of the statistics that will help us determine how well the WRF model represents the measurements.
\nThe statistical analysis begins with the analysis of marginal pdf for the variables of wind speed, wind direction and inverse Obukhov length for the WRF data. The subsequent conditional statistics will be performed conditioning over these variables.
\nTwo different error metrics are defined, with the raw error representing the correspondence between individual simulations and measurements while the time averaged error represents the correspondence between average simulations and measurements.
\nInitially the presence and effects of phase shift for WRF simulations over the error metrics is investigated. The conditional analysis continues by conditioning the error metrics over WRF wind speed, wind direction and inverse Obukhov length.
\nA correction for the ASCAT wind speed is presented and new conditional statistics are obtained with the comparison against the corrected data.”
X-ALT-DESC;FMTTYPE=text/html:Supervisor: Senior researcher Mark C. Kelly, DTU Wind Energy
\n
\nTitle: Conditional Error Statistics for Offshore Winds, from WRF Modelling and ASCAT Satellite Data
\n“Following the findings of Hahmann et al. (2015) we observe a bias in WRF simulations when compared to anemometer or Lidar measurements in the North Sea. This bias is expressed as the difference between average WRF model output and average measurements. This thesis’s objective is to define and analyze WRF error metrics against ASCAT satellite data over the North sea and at 10 m height.
Initially we’ll look at how the data is handled and converted through interpolation to enable the comparison. This will allow for the computation of the statistics that will help us determine how well the WRF model represents the measurements.
\nThe statistical analysis begins with the analysis of marginal pdf for the variables of wind speed, wind direction and inverse Obukhov length for the WRF data. The subsequent conditional statistics will be performed conditioning over these variables.
\nTwo different error metrics are defined, with the raw error representing the correspondence between individual simulations and measurements while the time averaged error represents the correspondence between average simulations and measurements.
\nInitially the presence and effects of phase shift for WRF simulations over the error metrics is investigated. The conditional analysis continues by conditioning the error metrics over WRF wind speed, wind direction and inverse Obukhov length.
\nA correction for the ASCAT wind speed is presented and new conditional statistics are obtained with the comparison against the corrected data.”
URL:https://windenergy.dtu.dk/english/kalender/2019/08/msc-defence-stefano-ribaudo DTSTAMP:20240328T161000Z UID:{61697EE1-C37D-4C3A-B885-1992FFF21894}-20190805T080000Z-20190805T080000Z LOCATION: DTU Risø Campus, Frederiksborgvej 399, bld. 118, Poul LaCour meeting room, 4000 Roskilde END:VEVENT END:VCALENDAR