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 Journal of the Korean Meteorological Society Vol.42 No.3
- 발행연도
- 2006.6
- 수록면
- 169 - 181 (13page)
이용수
초록· 키워드
오류제보하기
We examined monthly mean values of meteorological variables from six upper air stations in the tropics, each with at least 33 years of monthly observations. With the pronounced annual cycle and El Nino bands in the frequency domain, we show 11-year period oscillations in the time series wavelet analysis of the 150-hPa wind, height, and temperature from the six stations and also from National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) reanalysis. Our 11-year cycle shares many features with similar 11-year period oscillations found by previous authors, which could be related to solar cycles. Besides the 11-year period oscillations in heights and temperatures, the 11-year oscillations in winds show a coherent structure when regressed with the time series of sun spot numbers, except for minor variation in strength according to the wind component and station. The integrated winds from the regression analysis indicate that the upward branch of the Hadley cell intensifies or weakens through the expansion or contraction of its width in an altitude and latitude cross section. The 11-year signal in zonal winds is most pronounced at 150 hPa over the tropics. During the high phase of solar cycles, coincident with a larger number of sun spots and increased solar influx, tropical winds at 150 hPa are more westerly and northerly, geopotential height is increased, and the temperature is warmer. The power of the 11-year cycle is, on average, 10% of the total power of the unfiltered time series after accounting for the annual cycle.
목차
Abstract
1. Introduction
2. Data
3. Wavelet analysis
4. Analysis results
5. Conclusions
Acknowledgements
REFERENCES
참고문헌 (19)
참고문헌 신청
[학술지(정기간행물)] - / 1975 / The power spectrum of temperatures in central England. Quart. J. Roy. Meteor. Soc. : 464 ~ 466
[학술지(정기간행물)] - / 1976 / An analysis of Manleys central England temperature data. Quart. J. Roy. Meteor. Soc. : 871 ~ 878
[학술지(정기간행물)] - / 1979 / Cross-spectral analysis of sunspots and monthly mean temperature and precipitation for the contiguous United States. J. Atmos. Sci. : 746 ~ 753
[학술지(정기간행물)] - / 1996 / The NCEP/NCAR 40-Year Reanalysis Project. 77 : 437 ~ 471
[학술지(정기간행물)] - / 2002 / NCEP-DOE AMIP-II REANALISYS (R-2). 83 : 1631 ~ 1643
[학술지(정기간행물)] - / 1976 / An analysis of Manleys central England temperature data. Quart. J. Roy. Meteor. Soc. : 871 ~ 878
[학술지(정기간행물)] - / 1979 / Cross-spectral analysis of sunspots and monthly mean temperature and precipitation for the contiguous United States. J. Atmos. Sci. : 746 ~ 753
[학술지(정기간행물)] - / 1996 / The NCEP/NCAR 40-Year Reanalysis Project. 77 : 437 ~ 471
[학술지(정기간행물)] - / 2002 / NCEP-DOE AMIP-II REANALISYS (R-2). 83 : 1631 ~ 1643
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UCI(KEPA) : I410-ECN-0101-2009-453-016239110