Title Page
Contents
요약 9
1. Introduction 10
2. Data and Study area 16
2.1. Satellite data 16
2.2. Auxiliary data 19
2.3. Study area 20
3. Method 21
3.1. LUT based 6S RTM for Atmospheric correction 23
3.2. Atmospheric correction coefficients interpolation 26
3.3. Bi-directional Reflectance Distribution Function 29
3.4. Maximum Value Composite (MVC) 33
4. Results 34
4.1. Himawari-8 / AHI TOC reflectance 34
4.2. Evaluation of Himawari-8 / AHI Fixed Viewing BRDF-adjusted Reflectance 38
4.3. Himawari-8 / AHI NDVI spatial distribution 42
4.4. Time-series distribution according to land type (pixel) 45
4.5. Time-series distribution according to land type (Average) 48
4.6. Analysis of climate model impacts on NDVI values 52
5. Summary and Conclusions 56
6. Reference 58
Table 1. Typical Vegetation Indexes. 12
Table 2. Himawari-8 / AHI specifications 17
Table 3. Range and Interval of LUT parameters based 6S RMT. 25
Table 4. Himawari -8 / AHI NDVI means for each land types. 51
Table 5. Himawari -8 / AHI NDVI standard deviations for each land types. 51
Table 6. the variation of the climate Variables when the change... 55
Fig. 1. The influence of vegetation on various field. 11
Fig. 2. Reflectance pattern according to the health... 13
Fig. 3. SRFs of Himawari-8/AHI Bands 18
Fig. 4. The study area in this thesis. 20
Fig. 5. Flowchart of this thesis. 22
Fig. 6. TOC (band 1) reflectance spatial distribution in Australia. 27
Fig. 7. Atmospheric correction coefficient xa distribution according... 28
Fig. 8. Atmospheric correction coefficient xb distribution... 28
Fig. 9. Surface reflection property. 29
Fig. 10. BRDF composite period and interval. 32
Fig. 11. Simulated annual NDVI profile (curve) 33
Fig. 12. Himawari-8 / AHI TOC reflectance spatial distribution for each channels 36
Fig. 13. Comparative results of the Himawari-8 / AHI TOC... 37
Fig. 14. The RMSE of measured value and model value for all pixels at all channels. 40
Fig. 15. Himawari-8 / AHI KO coefficient spatial distribution for each channels 41
Fig. 16. Himawari-8 / AHI NDVIs spatial distribution for reflectance type used in calculating NDVI. 44
Fig. 17. Himawari -8 / AHI NDVIs time series distributions for an arbitrary pixel for each land types. 47
Fig. 18. Himawari -8 / AHI NDVIs time series distributions for mean for each land types. 50
Fig. 19. the difference between the NDVIs... 52
Fig. 20. Himawari -8 / AHI LAIs time series distributions... 54