표제지
목차
국문 초록 6
I. 서론 11
II. 연구 목적 17
III. 재료 및 방법 19
3.1. 증발산 알고리즘 19
3.2. 복사 요소 산출 24
3.2.1. 입사 단파복사량 26
3.2.2. 방출 단파복사량 28
3.2.3. 입사 장파복사량 28
3.2.4. 방출 장파복사량 29
3.3. 일단위 증발산으로 확장 30
3.4. 연구 지역 34
3.5. 인공위성 자료 37
3.5.1. 대기 자료 38
3.5.2. 육상 자료 42
3.6. 증발산 지도 제작 46
3.7. MODIS-MM5를 이용한 증발산 추정 방법 47
3.8. 오차 분석 49
IV. 결과 50
4.1. 입력 자료 평가 50
4.2. 복사 요소 평가 54
4.3. 증발산 평가 61
4.4. 증발산 지도 제작 66
4.5. MODIS-MM5 FDDA를 이용한 증발산 추정 68
V. 논의 71
VI. 결론 78
VII. 참고문헌 81
Abstract 87
Table 1. MODIS input variables for estimating ET and their temporal and... 22
Table 2. Typical values of maximum leaf conductance (CL) for principal...(이미지참조) 23
Table 3. Retrieval rate (%) of Terra and Aqua MOIDS insolation from 2004... 42
Table 4. Error statistics for Aqua MODIS-derived meteorological variables... 54
Table 5. Error statistics for Aqua MODIS-derived radiation components and... 61
Table 6. Error statistics for Aqua MODIS instantaneous ET (IET) and daily... 65
Fig. 1. Conceptual map for estimating radiation components and ET using... 13
Fig. 2. The flowchart of the process for estimating ET and producing ET map. 21
Fig. 3. Schematic diagram for estimating net radiation (Tα: air temperature,...(이미지참조) 25
Fig. 4. Schematic diagram for estimating downward shortwave radiation. 27
Fig. 5. Proposed sinusoidal model with MODIS overpass time. 31
Fig. 6. The location of study sites to estimate and evaluate input variables... 36
Fig. 7. Retrieved aerosol optical thickness (AOT) at MODIS bands of 0.38... 41
Fig. 8. Dotted and solid lines represent seasonal NDVI patterns before and... 44
Fig. 9. The flowchart of the process for albedo filling and 16-day composite... 46
Fig. 10. The flowchart of the process for continuously estimating ET using... 48
Fig. 11a. Comparison of MODIS-derived meteorological variables with 4... 52
Fig. 11b. Comparison of MODIS-derived meteorological variables with 4... 53
Fig. 12a. Comparison of MODIS-derived shortwave radiation with ground... 55
Fig. 12b. Comparison of MODIS-derived radiation components with ground... 58
Fig. 13. Comparison of MODIS-derived net radiation (Rn) with ground...(이미지참조) 60
Fig. 14. Comparison of MODIS-derived ET with ground based measurement. 63
Fig. 15. Comparison of MODIS daily ET derived by using sinusoidal model... 65
Fig. 16. Yearly daily mean ET and retrieval rate map produced by using... 67
Fig. 17. Comparison of MODIS daily ET and FDDA ET for land cover type. 69
Fig. 18. Daily mean ET of MODIS and FDDA ET for land cover type over... 70
Fig. 19. Accumulated ET (㎜) map over Geum river basin in 2006. 70
Fig. 20. Comparison of instantaneous ET and CC difference over the...(이미지참조) 76