Radiation Component Calculation and Energy Budget Analysis for the Region of the Korean Peninsula
- 주제(키워드) energy imbalance , climate change , energy budget , the region of the Korean peninsula , Himawari-8 Advanced Himawari Imager (AHI) , Unified Model (UM) Local Data Assimilation and Prediction System (LDAPS) , radiation component calculation algorithm , Clouds and the Earth’s Radiant Energy System (CERES)
- 발행기관 강릉원주대학교 대학원
- 지도교수 이규태
- 발행년도 2018
- 학위수여년월 2018. 2
- 학위명 박사
- 학과 및 전공 일반대학원 대기환경과학과
- 세부전공 대기복사
- 본문언어 영어
- 저작권 강릉원주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
Global warming refers to an increase in global mean surface temperature, which changes the global energy budget and creates an energy imbalance. Energy imbalances, in turn, lead to climate change, and meteorological disasters resulting from extreme climate may cause human, social, and economic losses. Global warming and attendant climate effects therefore necessitate the accumulation and monitoring of global and regional climate data for forecasting and mitigation. In order to calculate the energy budget for the region of the Korean peninsula, Himawari-8 Advanced Himawari Imager (AHI) and Unified Model (UM) Local Data Assimilation and Prediction System (LDAPS) data were used to develop an radiation components calculation algorithm. The accuracies of the calculated radiation components were evaluated against ground station observations and broadband radiation data from the Clouds and the Earth’s Radiant Energy System (CERES), which revealed ~3.5% differences and high correlations (0.98). The region of the Korean peninsula energy budgets of the top of the atmosphere (RT), surface (RS), and atmosphere (RA) were –2.4, -15.2, and 12.8 Wm-2, respectively; in other words, energy absorbed by the atmosphere either increased the surface temperature in regions with relatively low surface temperature or was transported to polar regions, balancing the global energy budget. The Korean peninsula regional energy budget showed RA values of –13.1 Wm-2 in the Sokcho area (284.7 K), where the surface temperature was low, and 25.3 Wm-2 in the Seoul area (289.5 K), where the surface temperature was high. Because regional energy imbalances can contribute to climate change and meteorological disasters, continuous research should be conducted to detect energy budget changes.
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Contents
Contents ⅰ
List of Figures ⅲ
List of Tables ⅶ
Abstract ⅸ
Chapter 1. Introduction 1
Chapter 2. Research data and methods 4
2.1 Research data 4
2.2 Radiation component calculation methods 6
2.3 Radiation component analysis, verification, and calibration 9
Chapter 3. Radiation component calculations and verification 14
3.1 Radiation component calculation algorithms 14
3.1.1 Reflected Shortwave Radiation (RSR) 14
3.1.2 Outgoing Longwave Radiation (OLR) 17
3.1.3 Downward Shortwave Radiation (DSR) and Absorbed Shortwave Radiation (ASR) 20
3.1.4 Downward Longwave Radiation (DLR) 23
3.1.5 Upward Longwave Radiation (ULR) 25
3.2 Energy budget calculations 27
3.3 Radiation component verification and calibration 29
3.4 Verification using ground-based observation data 39
3.5 Verification using satellite data 43
3.6 Comparisons of monthly mean radiation components 50
Chapter 4. Energy budget changes 56
4.1 Global energy budget 56
4.2 Region of the Korean peninsula energy budget 60
4.3 Regional energy budget within the Korean peninsula 83
Chapter 5. Summary and conclusions 87
References 90
Acknowledgement 105
Abstract of Korean 106
Appendix 108
