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Sea state and boundary layer physics of the emerging arctic ocean

Thomson, Jim and Maksym, Ted and Ackley, Steve and Gemmrich, Johannes and Perrie, William and Lehner, Susanne and Babanin, Alexander V. and Holt, Ben and Shen, Hayley and Stammerjohn, Sharon and Jeffries, Martin and Harper, Ben (2015) Sea state and boundary layer physics of the emerging arctic ocean. In: 49th CMOS Congress and 13th AMS Conference on Polar Meteorology and Oceanography Abstract Book. Canadian Meteorological and Oceanographic Society’s 49th Congress and the American Meteorological Society’s 13th Conference on Polar Meteorology and Oceanography, 31. May - 04. Jun 2015, Whistler, Canada. ISBN 978 0 9880587 3 6

Full text not available from this repository.

Official URL: http://cmos.in1touch.org/uploaded/web/congress/Files/CMOS%202015%20Abstract%20Book.pdf

Abstract

We present a large collaborative program investigating surface processes over the Arctic Ocean during the early autumn ice advance. With recent observed and predicted declines in summer minimum sea ice extent, the nature and role of air-ice-waves-ocean interactions driving autumn ice advance are expected to change. Central to these changes, the greatly increased open water fetch permits the generation of waves that may propagate far into the ice pack. Wave-ice interactions lead to wave attenuation and scattering while simultaneously fracturing ice into ever changing floe size and thickness distributions. Thus, the processes of wave generation and wave Dissipation are complicated by the marginal ice zone (MIZ). During the ice advance, waves can enhance ice formation rates through frazil/pancake generation. Further complicating these processes are forcing by winds and surface fluxes from the ocean to the atmosphere, which are episodically driven by storms. These processes moderate the release of heat from enhanced summer warming of the upper ocean, which may in turn impact the rate of ice advance. We apply a combination of numerical modeling, in situ observations, and remote sensing, with a focus on arctic conditions during the seasonal ice advance in early autumn. In preparation for a six-week cruise in the autumn of 2015, we have assessed emerging trends for the annual freeze-up of the Beaufort and Chukchi seas. Waves are clearly controlled by the extent of open water (i.e., fetch limitation) and strongly damped in newly forming ice. Winds are significantly affected by ice cover and reduced by increased atmospheric stability over the ice. The ice advance rate is nearly constant, despite extreme interannual variations of sea-ice extent in recent years, which suggests that large-scale thermodynamics are the dominant process.

Item URL in elib:https://elib.dlr.de/97161/
Document Type:Conference or Workshop Item (Speech)
Title:Sea state and boundary layer physics of the emerging arctic ocean
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Thomson, Jimjthomson (at) apl.washington.eduUNSPECIFIED
Maksym, TedWoods Hole Oceanographic InstitutionUNSPECIFIED
Ackley, SteveUniversity of TexasUNSPECIFIED
Gemmrich, JohannesUniversity of Victoria, Physics & Astronomy, Victoria, BC, CanadaUNSPECIFIED
Perrie, WilliamFisheries and Oceans Canada, Bedford Institute of Oceanography, Nova Scotia, CanadaUNSPECIFIED
Lehner, SusanneSusanne.Lehner (at) dlr.deUNSPECIFIED
Babanin, Alexander V.Swinburne Uni of Technology, AustraliaUNSPECIFIED
Holt, BenJet Propulsion LaboratoryUNSPECIFIED
Shen, HayleyClarkson UniversityUNSPECIFIED
Stammerjohn, SharonColorado UniversityUNSPECIFIED
Jeffries, MartinOffice of Naval ResearchUNSPECIFIED
Harper, BenOffice of Naval ResearchUNSPECIFIED
Date:2015
Journal or Publication Title:49th CMOS Congress and 13th AMS Conference on Polar Meteorology and Oceanography Abstract Book
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Ainslie, BruceCanadian Meteorological and Oceanographic Society
Ashman, TimCanadian Meteorological and Oceanographic Society
Soux, AndresCanadian Meteorological and Oceanographic Society
ISBN:978 0 9880587 3 6
Status:Published
Keywords:SAR, sea state, arctic
Event Title:Canadian Meteorological and Oceanographic Society’s 49th Congress and the American Meteorological Society’s 13th Conference on Polar Meteorology and Oceanography
Event Location:Whistler, Canada
Event Type:international Conference
Event Dates:31. May - 04. Jun 2015
Organizer:Canadian Meteorological and Oceanographic Society - CMOS & American Meteorological Society
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 Entwicklung und Erprobung von Verfahren zur Gewässerfernerkundung (old)
Location: Bremen , Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Remote Sensing Technology Institute
Deposited By: Kaps, Ruth
Deposited On:30 Nov 2015 08:35
Last Modified:30 Nov 2015 18:10

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