복사전달 계산을 위하여 개선된 케이-분포 방법의 기상수치모델 적용에 따른 복사 및 기상 요소 변화
Changes in the radiation and meteorological elements due to the application of improved k-distribution method for radiative transfer calculation to numerical weather prediction model
- 주제(키워드) 도움말 k-distribution , Parameterization , Solar(Shortwave) radiation , Thermal infrared(longwave) , Radiative transfer , Gaseous absorption , numerical weather prediction , WRF , Radiation physics module
- 발행기관 강릉원주대학교 일반대학원
- 지도교수 도움말 이규태
- 발행년도 2022
- 학위수여년월 2022. 8
- 학위명 박사
- 학과 및 전공 도움말 일반대학원 대기환경과학과
- 세부분야 해당없음
- 실제URI http://www.dcollection.net/handler/kangnung/000000011255
- UCI I804:42001-000000011255
- 본문언어 한국어
초록/요약 도움말
Recently, a new k-distribution parameterization method with high accuracy has been developed using the Line-by-line method in the stratosphere and troposphere, where the absorption of gases is remarkable. The heating(cooling) rate for each absorption gas was compared with the parameter model and line-by-line method. The new K-distribution method improved to the flux 6.23 , 2.51% and heating rate 0.588 Kday-1, 11.68% in short wave radiation. The cooling rate improved 6.741K and 84.1% in the long-wave radiation. The effect of improving the absorption coefficient(flux, heating rate) was reflected in the high layer above the stratosphere. And new k-distribution method combined the numerical weather prediction forecast system(WRF). The new downward shortwave at surface was 0.37% smaller than OLD due to absorption effect in clear case shortwave. The long-wave radiation absorption of the new method is 2.02% greater. The higher the atmohsphere layer(10hPa and 50hpa), downward short wave radiation flux was 0.51% smaller then OLD due to absorption. And emission of long-wave radiation increased by 0.76%. Therefore, there was a vertical temperature difference between NEW and OLD. The effect of the heating rate at the upper layer was well expressed. However, in the cloudy cases, the difference was large due to changes in the environment of clouds. Combination in the climate model can be used for research on climate warming and radiation equilibrium.
more목차 도움말
1.서론
2.연구자료 및 방법
2.1 복사전달 방정식
2.2 k-분포 모수화
2.3 새로운 k-분포 모수화
2.4 수치예보모델
2.5 사례선정
3.결과
3.1 복사모수화 모델 비교
3.2 수치모델 결과 비교(맑은날)
3.3 수치모델 결과 비교(흐린날)
3.4 계산 시간 분석
4. 결론
