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Wave Evolution in Off-Ice Wind Conditions

Gemmrich, Johannes and Rogers, W. Erick and Thomson, Jim and Lehner, Susanne (2018) Wave Evolution in Off-Ice Wind Conditions. Journal of Geophysical Research - Oceans, 123 (8), pp. 5543-5556. Wiley. DOI: 10.1029/2018JC013793 ISSN 0148-0227

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Official URL: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2018JC013793

Abstract

The reduction of the sea ice coverage increases the importance of wind waves in the Arctic. Updates to the standard spectral wave models in recent years have included many aspects of wave-ice interaction. Here we use high-resolution wave parameters retrieved from TerraSAR-X images and in situ SWIFT buoy observations to evaluate the performance of WAVEWATCH III® in ice-free waters in the western Arctic over a 7-week period including the fall freeze-up. About two thirds of the analyzed data sets show a good agreement between observations and model results. In other cases, more accurate representation of the wind input fields and the ice coverage could improve the model predictions. Two data sets with larger discrepancy are discussed in more detail. In these two cases of low model skill, with off-ice wind conditions, we show that the model wind‐sea growth is too weak to match TerraSAR‐X observations, and this situation is improved only slightly by including the effects of atmospheric stability using existing methods. Application of an effective fetch parameterization, which allows for reduced wave generation within the marginal ice zone prior to the open ocean, provides the best estimation of wave growth during off-ice winds.

Item URL in elib:https://elib.dlr.de/120521/
Document Type:Article
Title:Wave Evolution in Off-Ice Wind Conditions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gemmrich, JohannesUniversity of Victoria, Physics & Astronomy, Victoria, BC, CanadaUNSPECIFIED
Rogers, W. ErickNaval Research Laboratory, Stennis Space Center, MS, USAUNSPECIFIED
Thomson, JimUniversity of Washington, Appl. Physics LabUNSPECIFIED
Lehner, SusanneSusanne.Lehner (at) dlr.deUNSPECIFIED
Date:August 2018
Journal or Publication Title:Journal of Geophysical Research - Oceans
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:123
DOI :10.1029/2018JC013793
Page Range:pp. 5543-5556
Publisher:Wiley
ISSN:0148-0227
Status:Published
Keywords:Ocean Wave Evolution, SAR, Sea Ice
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben hochauflösende Fernerkundungsverfahren
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Photogrammetry and Image Analysis
Deposited By: Zielske, Mandy
Deposited On:24 Jun 2018 23:12
Last Modified:06 Sep 2019 15:27

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