표제지
국문요약
영문요약
목차
제1장 관측자료를 활용한 서남해 표층 수온(냉수대) 분석 23
1.1. 서남해역 표층 수온(냉수대) 연구의 필요성 23
1.2. 서남해역의 물리적 26
1.3. 서남해역의 연주기 수온 변동 특성 29
1.4. 서남해역 계절별 수직 수온 분포 특성 39
제2장 수온 변동 분석을 위한 서남해역 수치모델 구축 41
2.1. FVCOM 개요 41
2.2. 서남해역 수치모델 구축 44
2.2.1. 격자 및 수심자료 44
2.2.2. 초기장 자료 47
2.2.3. 경계 입력자료 49
2.2.4. 조석 및 유속 검증 51
2.2.5. 수온 검증 62
2.3. 표층 수온 위성 자료동화 기법을 통한 장기 예측 정확도 향상 74
2.3.1. 위성 자료 동화 기법 74
2.3.2. 수온 변동 정확도 검증 76
제3장 합성장 자료동화 기법 적용을 통한 서남해역 연안 수온 정확도 향상 연구 86
3.1. 해양의 특성을 반영한 위성·정점자료 합성장 생성 방법 86
3.2. 합성장 자료동화 기법에 의한 수온 정확도 향상 95
3.3. 진도 연안 냉수대 수온 검증 103
제4장 서남해역 냉수대 발생 강도에 따른 특성 분석 111
4.1. 서남해역 냉수대 영역 산정 111
4.2. 서남해역을 통해 유입되는 열량 산정 114
4.3. 결론 및 고찰 121
References 124
Table 1. Model verification for tide-level. 56
Table 2. Model verification for U, V component. 61
Table 3. merged OSTIA Data Assimilation Model verification for Temperature. 102
Table 4. Total Heat Energy through the Line. 115
Figure 1. Horizontal distribution of sea surface temperature in each August from 2013 to 2015 25
Figure 2. The oceanic currents map around Korea that described by a previous study (Lie and Cho, 2016). Yellow Sea Warm Current (YSWC) from high-temperature, high-saltinity... 27
Figure 3. The tidal characteristic of southwestern sea described by a previous study (Lie and Cho, 2016). (a) M2 tidal current ellipses and (b) tidal residual currents in the Yellow... 28
Figure 4. Sea Surface Temperature of OSTIA. Left side is 2020, right side is 2022. The first row means to January 1st, the second to February 1st, and the last row to March 1st. 29
Figure 5. Sea Surface Temperature of OSTIA. Left side is 2020, right side is 2022. The first row means to April 1st, the second to May 1st, and the last row to June 1st. 30
Figure 6. Sea Surface Temperature of OSTIA. Left side is 2020, right side is 2022. The first row means to July 1st, the second to August 1st, and the last row to September 1st. 31
Figure 7. Sea Surface Temperature of OSTIA. Left side is 2020, right side is 2022. The first row means to October 1st, the second to November 1st, and the last row to December 1st. 32
Figure 8. Location of buoy data of KMA which used to analyze with OSTIA. 33
Figure 9. Timeseires of OSTIA and buoy data in 2020. Green dot means OSTIA and black is buoy data. 34
Figure 10. Location of Observation data of National Institute of Fisheries Science(NIFS). The data were made with a Conductivity Temperature Depth Profiler(CTD). 35
Figure 11. Vertical profile of Temperature in Line A. The left side represents 2020 and right side is 2022. 36
Figure 12. Vertical profile of Temperature in Line B. The left side represents 2020 and right side is 2022. 37
Figure 13. Vertical profile of Temperature in Line C. 38
Figure 14. Vertical profile of Temperature in Line D. 38
Figure 15. Grid data and Depth data in the Main Area (above) and local area (below) of the constructed Model. 44
Figure 16. Schematic diagram of hybrid sigma layer application. Based on 80m, it is configured to be applied to be uniform in shallow water area, and specified... 46
Figure 17. Initial Condition example in the Main Area (above) and local area (below) of HYCOM data. 47
Figure 18. Interpolated initial condition example in the Main Area (above) and local area (below) of HYCOM data. 48
Figure 19. Scatter plot of Heat flux data with Smoothing method(left), Original data(right) and Difference(below) in February 5th, 2020. Heat Flux were gradually... 49
Figure 20. Elevation data in open boundary conditions. The black line represents tidal elevation data, the blue line indicates current elevation data derived from HYCOM, and... 50
Figure 21. The location of the tide station (tidal data, red point) and buoy (current data, blue point) used for model validation. 51
Figure 22. Tidal verification time series at 8 stations (Heuksando, Mokpo, Jindo, Chujado, Jeju, Wando, Goheng, Yeosu) in February. 52
Figure 23. Tidal verification time series at 8 stations (Heuksando, Mokpo, Jindo, Chujado, Jeju, Wando, Goheng, Yeosu) in March. 52
Figure 24. Tidal verification time series at 8 stations (Heuksando, Mokpo, Jindo, Chujado, Jeju, Wando, Goheng, Yeosu) in April. 53
Figure 25. Tidal verification time series at 8 stations (Heuksando, Mokpo, Jindo, Chujado, Jeju, Wando, Goheng, Yeosu) in May. 53
Figure 26. Tidal verification time series at 8 stations (Heuksando, Mokpo, Jindo, Chujado, Jeju, Wando, Goheng, Yeosu) in June. 54
Figure 27. Tidal verification time series at 8 stations (Heuksando, Mokpo, Jindo, Chujado, Jeju, Wando, Goheng, Yeosu) in July. 54
Figure 28. Tidal verification time series at 8 stations (Heuksando, Mokpo, Jindo, Chujado, Jeju, Wando, Goheng, Yeosu) in August. 55
Figure 29. Tidal verification time series at 8 stations (Heuksando, Mokpo, Jindo, Chujado, Jeju, Wando, Goheng, Yeosu) in September. 55
Figure 30. Tidal verification scatter plot at 8 stations. (Left: amplitude, Right: phase) 57
Figure 31. Buoy(Wando, Saengildo, Uido) current component(U, V) verification in February. 57
Figure 32. Buoy(Wando, Saengildo, Uido) current component(U, V) verification in March. 58
Figure 33. Buoy(Wando, Saengildo, Uido) current component(U, V) verification in April. 58
Figure 34. Buoy(Wando, Saengildo, Uido) current component(U, V) verification in May. 58
Figure 35. Buoy(Wando, Saengildo, Uido) current component(U, V) verification in June. 59
Figure 36. Buoy(Wando, Saengildo, Uido) current component(U, V) verification in July. 59
Figure 37. Buoy(Wando, Saengildo, Uido) current component(U, V) verification in August. 59
Figure 38. Buoy(Wando, Saengildo, Uido) current component(U, V) verification in September. 60
Figure 39. Buoy(Wando, Saengildo, Uido) current component(U, V) verification in October. 60
Figure 40. Timeseries of annual sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) (black line: observation, red line: FVCOM-noDA). 62
Figure 41. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in February (black line: observation, red line: FVCOM-noDA). 62
Figure 42. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in March (black line: observation, red line: FVCOM-noDA). 63
Figure 43. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in April (black line: observation, red line: FVCOM-noDA). 63
Figure 44. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in May (black line: observation, red line: FVCOM-noDA). 64
Figure 45. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in June (black line: observation, red line: FVCOM-noDA). 64
Figure 46. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in July (black line: observation, red line: FVCOM-noDA). 65
Figure 47. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in August (black line: observation, red line: FVCOM-noDA). 65
Figure 48. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in September (black line: observation, red line: FVCOM-noDA). 66
Figure 49. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in October (black line: observation, red line: FVCOM-noDA). 66
Figure 50. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in November (black line: observation, red line: FVCOM-noDA). 67
Figure 51. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in December (black line: observation, red line: FVCOM-noDA). 67
Figure 52. Timeseries of annual sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) (black line: observation, blue line: FVCOM-noDA,... 76
Figure 53. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in February (black line: observation, blue line: FVCOM-... 76
Figure 54. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in March (black line: observation, blue line: FVCOM-noDA,... 77
Figure 55. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in April (black line: observation, blue line: FVCOM-noDA,... 77
Figure 56. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in May (black line: observation, blue line: FVCOM-noDA,... 78
Figure 57. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in June (black line: observation, blue line: FVCOM-noDA,... 78
Figure 58. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in July (black line: observation, blue line: FVCOM-noDA,... 79
Figure 59. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in August (black line: observation, blue line: FVCOM-noDA,... 79
Figure 60. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in September (black line: observation, blue line: FVCOM-... 80
Figure 61. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in October (black line: observation, blue line: FVCOM-... 80
Figure 62. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in November (black line: observation, blue line: FVCOM-... 81
Figure 63. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in December (black line: observation, blue line: FVCOM-... 81
Figure 64. Spatial distribution of the correlation coefficients R (left row) and distance weights W (right row) used in the CR-SST field at 22183, 22184 points in the southwest... 89
Figure 65. Sea Surface Temperature of mOSTIA for the first day of each month in 2020 (January to June). 91
Figure 66. Sea Surface Temperature of mOSTIA for the first day of each month in 2020 (July to December). 92
Figure 67. Difference between mOSTIA and OSTIA for the first day of each month in 2020 (January to June). 93
Figure 68. Difference between mOSTIA and OSTIA for the first day of each month in 2020 (July to December). 94
Figure 69. Timeseries of annual sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) (black line: observation, cyan line: FVCOM-noDA,... 95
Figure 70. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in February (black line: observation, cyan line: FVCOM-... 95
Figure 71. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in March (black line: observation, cyan line: FVCOM-noDA,... 96
Figure 72. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in April (black line: observation, cyan line: FVCOM-noDA,... 96
Figure 73. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in May (black line: observation, cyan line: FVCOM-noDA,... 97
Figure 74. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in June (black line: observation, cyan line: FVCOM-noDA,... 97
Figure 75. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in July (black line: observation, cyan line: FVCOM-noDA,... 98
Figure 76. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in August (black line: observation, cyan line: FVCOM-noDA,... 98
Figure 77. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in September (black line: observation, cyan line: FVCOM-... 99
Figure 78. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in October (black line: observation, cyan line: FVCOM-... 99
Figure 79. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in November (black line: observation, cyan line: FVCOM-... 100
Figure 80. Timeseries of sea surface temperature in each observation point (22183, 22481, 22500, 22503, 22102, 22466) in December (black line: observation, cyan line: FVCOM-... 100
Figure 81. Vertical profile of Temperature in Line A in 2020. 104
Figure 82. Vertical profile of Temperature in Line C in 2020. 104
Figure 83. Vertical profile of Temperature in Line A in 2022. 105
Figure 84. Vertical profile of Temperature in Line C in 2022. 105
Figure 85. Annual(Above) and Summer(July to August, below) timeseries of cold water mass area annual data(Red line means 2020 and blue line is 2022). A cold water zone is... 111
Figure 86. Annual(Above) and Summer(July to August, below) timeseries of cold water mass area annual data(Red line means 2020 and blue line is 2022). A cold water zone is... 112
Figure 87. Location of Line(Red line) in Southwest Sea of Korea. 114
Figure 88. Surface Heat Energy Budget of Lined Area in Fig.86(April to Jul). 117
Figure 89. Total Surface Heat Energy in Each Line (April to Jul). 119
Figure 90. Surface Heat Energy Budget of Lined Area in Fig.86(April to Aug). 120
Figure 91. Location of Line(Red line) in Southwest Sea of Korea. Main Source of Cold water zone annual validation is Line 2-C(yellow rectangle). 121
Figure 92. Horizontal distributions of temperature at the surface, 10m, 20m, 30m, 40m, and 50m in August, 2003. Dotted line indicates an isotherm of 13 ℃. 122