Effect of Wave Boundary Layer on Sea-to-Air Dimethylsulfide Transfer Velocity During Typhoon Passage

Abstract

A full-spectral third-generation ocean wind-wave model (Wavewatch-III) implemented in the South China Sea is used to investigate the effects of the wave boundary layer on the drag coefficient and the sea-to-air transfer velocity of dimethylsulfide (DMS) during passage of Typhoon Wukong (September 5-11, 2000) with a maximum sustained wind speed of 38 m s(-1). The model is driven by the reanalyzed surface winds (1 deg x 1 deg, four times daily) from the National Centers for Environmental Prediction. It is found that the wave boundary layer evidently enhances (16.5%) the drag coefficient (in turn increases the momentum flux across the air-sea interface), and reduces (13.1%) the sea-to-air DMS transfer velocity (in turn decreases the sea-to-air DMS flux). This indicates the possibility of important roles of wave boundary layer in atmospheric DMS contents and global climate system.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2006
Accession Number
ADA575165

Entities

People

  • Kuo-feng Cheng
  • Peter Cheng Chu

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Chemical Compounds
  • Climate Change
  • Coefficients
  • Demographic Cohorts
  • Diffusion Coefficient
  • Dispersion Relations
  • Frequency
  • Grids
  • Layers
  • Marine Systems (Military)
  • Momentum
  • Oceans
  • South China Sea
  • Tropical Cyclones
  • Waves

Fields of Study

  • Environmental science

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Immunology and Pathology
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers