Air Mass Modification in the Marginal Ice Zone.

Abstract

A case study of the Andreas et al. (1984) data on atmospheric boundary layer modification in the marginal ice zone is made. Our model is a two-dimensional, multi-level, linear model with turbulence, lateral and vertical advection, and radiation. Good agreement between observed and modeled temperature cross-sections is obtained. In contrast to the hypothesis of Andreas et al., we find the air flow is stable to secondary circulations. Cloud top longwave cooling, not an air-to-surface heat flux, dominates the cooling of the boundary layer. The accumulation with fetch over the ice of changes in the surface wind field are shown to have a large effect on estimates of the surface wind stress. We speculate that the Andreas et al. estimates of the drag coefficient over the compact sea ice are too high. Keywords: Atmospheric boundary layers; and Air-sea-ice interaction.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1985
Accession Number
ADA161745

Entities

People

  • Kenneth Hunkins
  • Theodore J. Bennett Jr.

Organizations

  • Lamont–Doherty Earth Observatory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Masses
  • Boundary Layer
  • Heat Energy
  • Heat Flux
  • Inversion
  • Marginal Ice Zones
  • Meteorology
  • Military Research
  • New York
  • Observatories
  • Oceans
  • Sea Ice
  • Sea Water
  • Secondary Flow
  • Surface Roughness
  • Wind Shear
  • Wind Stress

Fields of Study

  • Environmental science

Readers

  • Fluid Dynamics.
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers
  • Polar and Arctic Studies