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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국기상학회 Asia-Pacific Journal of Atmospheric Sciences Journal of the Korean Meteorological Society Vol.42 No.6
- 발행연도
- 2006.12
- 수록면
- 339 - 359 (21page)
이용수
이 논문의 연구 히스토리 (8)
2006
A Spectral Parameterization of Convectively Forced Internal Gravity Waves and Estimation of Gravity-Wave Momentum Forcing to the Middle Atmosphere
In-Sun Song
,
Hye-Yeong Chun
Asia-Pacific Journal of Atmospheric Sciences
2006.12
학술저널
Realistic Propagation of Convectively Forced Gravity Waves and Its Impacts in a Middle Atmosphere GCM (WACCM)
In-Sun Song
,
Hye-Yeong Chun
한국기상학회 학술대회 논문집
2006.10
학술대회자료
Effects of Propagation Characteristics of Convectively Forced Gravity Waves on Wave Momentum Forcing
In-Sun Song
,
Hye-Yeong Chun
한국기상학회 학술대회 논문집
2006.04
학술대회자료
2003
Effects of Convectively Forced Gravity Waves on Large-Scale Flow and Their Dependence on Gravity Wave Drag Parameterization Methods
In-Sun Song
,
Hye-Yeong Chun
대기
2003.10
학술저널
Momentum Flux of Convectively Forced Internal Gravity Waves as a Function of Phase Speeds and Its Application to Gravity Wave Drag Parameterization
In-Sun Song
,
Hye-Yeong Chun
대기
2003.04
학술저널
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초록· 키워드
오류제보하기
A spectral parameterization of convectively forced internal gravity waves is presented based on the analytic formulation of cloud-top gravity wave momentum flux, and momentum forcing in the middle atmosphere due to the "Waves is estimated using global assimilation and observational data. To assess dependency on methodology of saturating "Waves, two different (Lindzen-type and Warner and McIntyre-type) methods are used in the parameterization. With proper tunable parameters, determined based on an explicit convective gravity wave simulation and theoretical estimations, the present parameterization can provide wave momentum forcing that is reasonable compared with observational estimations. The wave momentum forcing by the two wave saturation methods is generally consistent, but its magnitude and spatial structure are different more or less, according to difference in spectral shapes of saturation thresholds. Through the present parameterization, it is found that convectively forced internal gravity waves can give eastward momentum forcing of about 1-2 ms?¹ day?¹ in the equatorial upper stratosphere, can contribute up to 13-25% (19-38%) of wave forcing required for driving the westerly (easterly) phase of the quasi-biennial oscillation of zonal-mean zonal wind in the equatorial lower stratosphere, and can give a significant portion (at least more than 30%) of momentum forcing required in the mid-latitude upper mesosphere, except in the Southern Hemisphere mid-latitudes in January where convective activities are negligibly weak. Waves, other than the convective internal gravity "Waves, that may be responsible for the momentum forcing required in the Southern Hemisphere mid-latitudes in January are discussed.
목차
Abstract
1. Introduction
2. Cloud-top wave momentum flux spectrum
3. Vertical evolution of wave spectrum
4. Results
5. Discussion
6. Summary and conclusion
Acknowledgements
REFERENCES
APPENDIX A
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Effects of Convectively Forced Gravity Waves on Large-Scale Flow and Their Dependence on Gravity Wave Drag Parameterization Methods
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Momentum flux of convective gravity waves derived from an off-line gravity wave parameterization : Impact to the large-scale flow in the stratosphere and contribution to the QBO
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Effects of a Convectively Forced Gravity Wave Drag Parameterization on a Mesoscale Convective System Simulated by a Mesoscale Model (MM5)
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Momentum flux spectrum of convective gravity waves : Validation of a parameterization using ensemble mesoscale simulations
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Effects of the Basic-State Wind on Secondary Waves Generated by the Breaking of Gravity Waves in the Mesosphere
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Modification of the wave-propagation direction in the Lagrangian spectral parameterization of convective gravity wave drag using Global Cloud Imagery data
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UCI(KEPA) : I410-ECN-0101-2009-453-016240655