Editorial Type:
Article
Article Type:
Research Article

Quality Control and Tilt Correction Effects on the Turbulent Fluxes Observed at an Ocean Platform

Hyun-Mi Oh Division of Earth Environmental System, Pusan National University, Busan, South Korea

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Kyung-Eak Kim Department of Astronomy and Atmospheric Sciences, Kyungpook National University, Daegu, South Korea

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Kyung-Ja Ha Division of Earth Environmental System, Pusan National University, Busan, South Korea

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Larry Mahrt College of Oceanic and Atmospheric Science, Oregon State University Corvallis, Oregon

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Jae-Seol Shim Coastal Disaster Prevention Research Division, Korea Ocean Research and Development Institute, Ansan, South Korea

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Print Publication:
01 Mar 2011
DOI:
https://doi.org/10.1175/2010JAMC2367.1
Page(s):
700–712
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Abstract

This study investigates atmospheric factors influencing the quality and the postprocessing (e.g., tilt correction) of fast-response measurements of turbulent fluxes for difficult open-sea measurements over an offshore platform. The data were collected at the Ieodo Ocean Research Station over the Yellow Sea during the period from 5 November 2007 to 19 February 2008. The quality control removal of the data generally depends on wind speed, relative humidity, significant wave height, visibility, and stability. The removal of substantial water vapor data with weak-wind stable conditions is investigated. Three different tilt correction algorithms (double rotation, triple rotation, and planar fit) are applied to correct the data because of inadvertent tilt of sonic anemometers. The choice of tilt correction method significantly influences the angle between the wind and stress direction.

Corresponding author address: Kyung-Ja Ha, Division of Earth Environmental System, Pusan National University, Busan, 609-735, South Korea. Email: kjha@pusan.ac.kr

Abstract

This study investigates atmospheric factors influencing the quality and the postprocessing (e.g., tilt correction) of fast-response measurements of turbulent fluxes for difficult open-sea measurements over an offshore platform. The data were collected at the Ieodo Ocean Research Station over the Yellow Sea during the period from 5 November 2007 to 19 February 2008. The quality control removal of the data generally depends on wind speed, relative humidity, significant wave height, visibility, and stability. The removal of substantial water vapor data with weak-wind stable conditions is investigated. Three different tilt correction algorithms (double rotation, triple rotation, and planar fit) are applied to correct the data because of inadvertent tilt of sonic anemometers. The choice of tilt correction method significantly influences the angle between the wind and stress direction.

Corresponding author address: Kyung-Ja Ha, Division of Earth Environmental System, Pusan National University, Busan, 609-735, South Korea. Email: kjha@pusan.ac.kr

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Journal of Applied Meteorology and Climatology

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