Regional Downscaling of Storm Surge Episodes

Regional climate model COSMO-CLM developed by DWD used for dynamical downscaling of observed storm events and potential storm surge events in future GHG scenarios (see www.clm-community.eu for a detailed model description).

COSMO-CLM driven by reanalysis data: The model was used for dynamical downscaling of wind for the most extreme observed historic storm surge events. As

this study concentrated on the atmospheric influences we choosed storm surges with the highest wind surge values. The model data was used to compare wind speed estimates over the German Bight region with the storm surge atlas from the station Cuxhaven (provided by G. Gönnert, LSBG Hamburg).

COSMO-CLM driven by ECHAM5/MPI-OM model data: To estimate possible future changes of storm surge risk due to increased GHG concentrations, the model was used to downscale events (detected in GCM model data) with high effective wind speeds (wind projected on the direction 295°) over the German Bight region. A comparison between the most intense events detected in GCM data under recent

climate conditions (20C) and under possible future climate conditions (A1B) was used to estimate changes in storm surge intensity and frequency under future climate conditions.

For most potential storm surge events (driven by GCM data) and for observed storm surge events (driven by ERA-Interim reanalysis data) each event is simulated by a five member mini ensemble. These members differ due to their model domain, which is shifted by 8 grid boxes to north, south, east and west. The results of this ensemble can be used to estimate the uncertainty of the storm surge event.

 
Citation proposal
. Regional Downscaling of Storm Surge Episodes. https://services.mspdata.eu:/geonetwork/srv/api/records/4aa855d2-4d65-493a-b9dd-554c94f451d7

Simple

Date ( Creation )
2013-10-01

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Maintenance and update frequency
Irregular
Keywords ( Theme )
  • Storm Surge Episodes
Keywords ( Place )
  • North Sea
Keywords ( Theme )
  • COSMO-CLM
Keywords ( Theme )
  • Regional Downscaling
Keywords
  • KLIWAS
Use limitation
Klimatologische Untersuchungen
Access constraints
Copyright
Classification
Unclassified
Spatial representation type
Grid
Metadata language
English
Topic category
  • Oceans
Unique resource identifier
Codespace
North Sea COSMO CLM
Version
4.0
OnLine resource
http://www.bsh.de/de/Meeresdaten/Beobachtungen/Klima-Anpassungen/Datenblatt/factSheet_KLIWAS_FUB_PAK.pdf  

Metadata

File identifier
4aa855d2-4d65-493a-b9dd-554c94f451d7   XML
Metadata language
English
Parent identifier
Regional Downscaling of Storm Surge Episodes
Hierarchy level
Model
Date stamp
2013-10-01
Metadata standard name
INSPIRE

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