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Delayed Mode Quality Control of Argo Data and Its Verification in the Pacific Ocean

태평양 Argo 자료의 지연모드 품질관리 및 검증연구

  • Yang, Joon-Yong (Ocean Research Division, Environment Research Department, National Fisheries Research and Development Institute) ;
  • Kang, Seong-Yun (Ocean Research Division, Environment Research Department, National Fisheries Research and Development Institute) ;
  • Go, Woo-Jin (Ocean Research Division, Environment Research Department, National Fisheries Research and Development Institute) ;
  • Suh, Young-Sang (Ocean Research Division, Environment Research Department, National Fisheries Research and Development Institute) ;
  • Seo, Jang-Won (Global Environmental System Research Laboratory, National Institute of Meteorological Research) ;
  • Suk, Moon-Sik (Ocean Climate Change Research Division, Korea Ocean Research and Development Institute)
  • 양준용 (국립수산과학원 환경연구부 해양연구과) ;
  • 강성윤 (국립수산과학원 환경연구부 해양연구과) ;
  • 고우진 (국립수산과학원 환경연구부 해양연구과) ;
  • 서영상 (국립수산과학원 환경연구부 해양연구과) ;
  • 서장원 (국립기상연구소 지구환경시스템연구팀) ;
  • 석문식 (한국해양연구원 해양기후변화연구사업단)
  • Published : 2008.12.31

Abstract

Quality control of Argo(Array for Real-time Geostrophic Oceanography) data is crucial by reason that salinity measurements are liable to experience some drift and offset due to biofouling, contamination of sensor and wash-out of biocide. The automated Argo real-time quality control has a limit of sorting data quality, so that WJO program is adopted as standardized method of Argo delayed mode quality control (DMQc) in the world that is a precise quality control method. We conducted DMQC on pressure, temperature and salinity measured by Argo floats in the Pacific Ocean including expert evaluation. Particularly, salinity data were corrected using WJO program. 4 salinity profiles of Argo delayed mode were compared with nearby in situ CTD data and other Argo data in deep layer where oceanographic conditions are stable in time and space. The differences of both salinities were lower than target accuracy of Argo. As compared with the difference of salinities before DMQC, those after DMQC decreased by 60-80 percent. Quality of delayed mode salinity data seemed to be improved correcting salinity data suggested by WJO program.

Keywords

Argo;Pacific Ocean;Delayed mode;Quality control;WJO program

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