지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국기상학회 Asia-Pacific Journal of Atmospheric Sciences Asia-Pacific Journal of Atmospheric Sciences Vol.44 No.1
- 발행연도
- 2008.2
- 수록면
- 11 - 24 (14page)
이용수
초록· 키워드
오류제보하기
The focus in this paper is on the outer wind structure and structure changes in tropical cyclones, which are important for the location and timing of warnings of the onset of gale-force winds, and affect tropical cyclone motion via the beta-effect propagation effect. Deviations from a simple tangential wind profile with radius will occur when secondary eyewalls form, and a recent high-resolution numerical simulation by Terwey and Montgomery suggests large increases in the radius of 50 kt (R??) and 34 kt (R₃₄) winds as a result of a secondary eyewall. Creation of the conditions for an annular hurricane would also imply a large increase in R?? and R₃₄. A simple model that an intensifying (weakening) tropical cyclone will be accompanied by an increase (decrease) in outer wind structure is tested with a unique set of H<SUP>*</SUP>Wind analyses of the surface wind in the Atlantic during the 2003-2005 season. Whereas a small set of H<SUP>*</SUP>Wind analyses during the formation stage has the expected increases in R₃₄ values, a considerable percentage of R₃₄ decreases occur during the intensification stages when only increases would be expected. Similarly, a considerable percentage of R₃₄ increases are observed during the decay phase when decreases would be expected, although a forecaster rule-of-thumb is that the tropical cyclone circulation expands during the decay stage. Wind structure (including intensity) changes will be one of the foci of the Tropical Cyclone Structure (TCS08) field experiment in the western North Pacific during August and September 2008. Both internally-forced and environmentally-forced wind structure change hypotheses will be examined. Some of the special TCS08 observations that will improve our understanding of wind structure changes will be described.
목차
Abstract
1. Introduction
2. Track dependency on outer wind structure
3. More complex outer wind profiles
4. Idealized tropical cyclone structure changes
5. Actual structure changes
6. Opportunities from Tropical Cyclone Structure (TCS08)
7. Conclusion
Acknowledgments
REFERENCES
참고문헌 (16)
참고문헌 신청
1. [학술지(정기간행물)] - Carr, L. E., III / 1997 / Models of tropicalcyclone wind distribution and beta-effect propagationfor application to tropical cyclone track forecasting / Mon. Wea. Rev 125 : 3190 ~ 3209
2. [학술지(정기간행물)] - Elsberry, R. L. / 2007 / Accuracy of Atlantic and eastern North Pacific tropicalcyclone intensity forecast guidance / Wea. Forecasting 22 : 747 ~ 762
3. [학술지(정기간행물)] - Emanuel, K. A. / 1995a / The behavior of a simple hurricanemodel using a convective scheme based on subcloud-layer entropy equilibrium / J. Atmos. Sci 52 : 3959 ~ 3968
4. [학술지(정기간행물)] - Emanuel, K. A. / 1995b / Sensitivity of tropical cyclones to surfaceexchange coefficients and a revised steady-state modelincorporating eye dynamics / J. Atmos. Sci 52 : 3969 ~ 3976
5. [학술지(정기간행물)] - Fiorino, M. / 1989 / Some aspects of vortexstructure related to tropical cyclone motion / J.Atmos. Sci 46 : 975 ~ 990
2. [학술지(정기간행물)] - Elsberry, R. L. / 2007 / Accuracy of Atlantic and eastern North Pacific tropicalcyclone intensity forecast guidance / Wea. Forecasting 22 : 747 ~ 762
3. [학술지(정기간행물)] - Emanuel, K. A. / 1995a / The behavior of a simple hurricanemodel using a convective scheme based on subcloud-layer entropy equilibrium / J. Atmos. Sci 52 : 3959 ~ 3968
4. [학술지(정기간행물)] - Emanuel, K. A. / 1995b / Sensitivity of tropical cyclones to surfaceexchange coefficients and a revised steady-state modelincorporating eye dynamics / J. Atmos. Sci 52 : 3969 ~ 3976
5. [학술지(정기간행물)] - Fiorino, M. / 1989 / Some aspects of vortexstructure related to tropical cyclone motion / J.Atmos. Sci 46 : 975 ~ 990
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