Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Study on the Retreatment Techniques for NOAA Sea Surface Temperature Imagery

NOAA 수온영상 재처리 기법에 관한 연구

  • Kim, Sang-Woo (Fisheries Resources and Environment Division, East Sea Fisheries Research Institute) ;
  • Kang, Yong-Q. (Department of oceanography, Pukyong National University) ;
  • Ahn, Ji-Sook (Fishery and Ocean Information Division, National Fisheries Research & Development Institute)
  • 김상우 (동해수산연구소 자원환경과) ;
  • 강용균 (부경대학교 해양학과) ;
  • 안지숙 (국립수산과학원 수산해양종합정보과)
  • Received : 2011.10.05
  • Accepted : 2011.12.26
  • Published : 2011.12.31
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Abstract

We described for the production of cloud-free satellite sea surface temperature(SST) data around Northeast Asian using NOAA AVHRR(Advanced Very High Resolution Radiometer) SST data during 1990-2005. As a result of Markov model, it was found that the value of Markov coefficient in the strong current region such as Kuroshio region showed smaller than that in the weak current. The variations of average SST and regional difference of seasonal day-to-day SST in spring and fall were larger than those in summer and winter. In particular, the distribution of the regional difference appeared large in the vicinity of continental in spring and fall. The difference of seasonal day-to-day SST was also small in Kuroshio region and southern part of East Sea due to the heat advection by warm currents.

본 연구에서는 동북아시아 NOAA AVHRR 위성관측 16년간(1990-2005) 해양표면 수온영상을 이용하여 에러 값 제거와 결측 자료 보완을 위하여 마르코프 계수를 결정하였고, 이 값에서 현재 수온평년 값을 더하여 구름 없는 해양표면수온 생성 기법을 제시하였다. 마르코프 연쇄 모델의 결과에 의하면, 마르코프 계수는 해류가 강한 쿠로시오 해역 등이 해류가 약한 동해 북서부의 대부분 해역과 동중국해보다 그 계수가 상대적으로 낮게 나타났다. 평균 수온의 변동은 봄과 가을이 겨울과 여름에 비하여 분산이 크게 나타났고, 계절별 일간 수온 차이도 수온의 계절적 변동이 큰 봄과 가을이 여름과 겨울에 비하여 큰 지역적인 차이를 보였다. 그 지역적인 분포는 봄과 가을의 경우 전 해역의 대륙 인접부에서 대부분 크게 나타났고, 동해 극전선 남부해역과 쿠로시오해역에서는 난류에 의한 열수송으로 일간 수온의 차이가 작았다.

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References

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