Role of Triad Kinetic Energy Interactions for Maintenance of Upper Tropospheric Low Frequency Waves during Summer Monsoon 1988

D.R. Chakraborty; N.K. Agarwal

doi:10.1007/BF02657030

Impact Factor: 5.8

Volume 13 Issue 1

Jan. 1996

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 1996 > 13(1): 91-102

Role of Triad Kinetic Energy Interactions for Maintenance of Upper Tropospheric Low Frequency Waves during Summer Monsoon 1988

1.
Indian Institute of Tropical Meteorology, Pune-411008,

doi: 10.1007/BF02657030

Abstract
References
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Abstract:
In order to determine nonlinear energy exchanges into individual triad interactions in the frequency domain, spectral formulas are derived by use of the cross-spectral technique. First time attempt has been made to understand the problem of maintenance of low frequency waves for tropical weather system by using this technique. The TOGA basic level III daily wind analyses on a 2.5 degree square grid around the global zone from 20oS-30oN at 200 hPa for 92-day periods covering June, July and August of 1988 are used. Kinetic energy is gained at high frequencies and lost at low frequencies. In the planetary scale dynamics over tropics, barotropic nonlinear energy transfer plays a negative role. Low frequency wave of period 45 day loses maximum amount of energy when it interacted with frequencies of periods 92 day and 30 day. 45 day cycle is also the main source of energy for other frequencies. Distrubances of period 15 day gain maximum amount of energy. The major contribution comes from the triad interaction of the frequencies . North of 20oN low frequency waves of period 30 to 92-day gain energy through nonlinear triad interaction with the maximum gain at 22.5oN. The study may help to investigate the rapid loss of predictability of low frequency modes over tropics
- Cross-spectral technique,
- Low frequency mode
References

[1]	Ni Yunqi, Zhang Qin, Lin Wuyin, 1991: Seasonal Characteristics and Interannual Variability of Monthly Scale Low-Frequency Oscillation in a Low-Order Global Spectral Model, ADVANCES IN ATMOSPHERIC SCIENCES, 8, 307-316. doi: 10.1007/BF02919613
[2]	FuZuntao, Zhao Qiang, QiaoFangli, Liu Shikuo, 2000: Response of Atmospheric Low-frequency Wave to Oceanic Forcing in the Tropics, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 569-575. doi: 10.1007/s00376-000-0020-y
[3]	HE Jinhai, YU Jingjing, SHEN Xinyong, 2007: Impacts of SST and SST Anomalies on Low-Frequency Oscillation in the Tropical Atmosphere, ADVANCES IN ATMOSPHERIC SCIENCES, 24, 377-382. doi: 10.1007/s00376-007-0377-2
[4]	FAN Ke, WANG Huijun, 2007: Dust Storms in North China in 2002: A Case Study of the Low Frequency Oscillation, ADVANCES IN ATMOSPHERIC SCIENCES, 24, 15-23. doi: 10.1007/s00376-007-0015-z
[5]	Li Maicun, 1987: ON THE LOW-FREQUENCY, PLANETARY-SCALE MOTION IN THE TROPICAL ATMOSPHERE AND OCEANS, ADVANCES IN ATMOSPHERIC SCIENCES, 4, 249-263. doi: 10.1007/BF02663596
[6]	Lu Peisheng, 1993: The Propagation of Disturbances Excited by Low-Frequency Oscillations in the Tropics, ADVANCES IN ATMOSPHERIC SCIENCES, 10, 287-295. doi: 10.1007/BF02658134
[7]	Lu Keli, Zhu Yongchun, 1994: Seasonal Variation of Stationary and Low-Frequency Rossby Wave Rays, ADVANCES IN ATMOSPHERIC SCIENCES, 11, 427-435. doi: 10.1007/BF02658163
[8]	Fu Congbin, Ye Duzheng, 1988: THE TROPICAL VERY LOW-FREQUENCY OSCILLATION ON INTERANNUAL SCALE, ADVANCES IN ATMOSPHERIC SCIENCES, 5, 369-388. doi: 10.1007/BF02656760
[9]	Peter J. Webster, Min Dong, 1992: The Structure of Low Frequency Phenomena in the Tropics and Its Interaction with the Extratropics, ADVANCES IN ATMOSPHERIC SCIENCES, 9, 1-16. doi: 10.1007/BF02656925
[10]	Li Guitong, Li Chongyin, 1998: Activities of Low-Frequency Waves in the Tropical Atmosphere and ENSO, ADVANCES IN ATMOSPHERIC SCIENCES, 15, 193-203. doi: 10.1007/s00376-998-0039-z
[11]	M. Y. Totagi, 1994: Power and Cross-Spectra for the Turbulent Atmospheric Motion and Transports in the Domain of Wave Number Frequency Space: Theoretical Aspects, ADVANCES IN ATMOSPHERIC SCIENCES, 11, 491-498. doi: 10.1007/BF02658170
[12]	Wang Guomin, 1993: One Possible Mechanism for the Principal Mode of Atmospheric Low-Prequency Variability in the Northern Hemisphere Winter, ADVANCES IN ATMOSPHERIC SCIENCES, 10, 54-60. doi: 10.1007/BF02656953
[13]	FENG Junqiao, HU Dunxin, YU Lejiang, 2012: Low-Frequency Coupled Atmosphere--Ocean Variability in the Southern Indian Ocean, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 544-560. doi: 10.1007/s00376-011-1096-2
[14]	Chen Longxun, Zhu Congwen, Wang Wen, Zhang Peiqun, 2001: Analysis of the Characteristics of 30-60 Day Low-Frequency Oscillation over Asia during 1998 SCSMEX, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 623-638. doi: 10.1007/s00376-001-0050-0
[15]	Zhang Ren, Yu Zhihao, 2000: Low-Frequency CISK-Rossby Wave and Stratospheric QBO in the Tropical Atmosphere, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 311-321. doi: 10.1007/s00376-000-0012-y
[16]	Wang Huijun, 2000: The Seasonal Climate and Low Frequency Oscillation in the Simulated Mid-Holocene Megathermal Climate, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 445-457. doi: 10.1007/s00376-000-0035-4
[17]	Fang ZHOU, Hong-Li REN, 2017: Dynamical Feedback between Synoptic Eddy and Low-Frequency Flow as Simulated by BCC_CSM1.1(m), ADVANCES IN ATMOSPHERIC SCIENCES, 34, 1316-1332. doi: 10.1007/s00376-017-6318-9
[18]	Jiapeng MIAO, Tao WANG, Huijun WANG, Yongqi GAO, 2018: Influence of Low-frequency Solar Forcing on the East Asian Winter Monsoon Based on HadCM3 and Observations, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 1205-1215. doi: 10.1007/s00376-018-7229-0
[19]	Yan Jinghua, Chen Longxun, Wang Gu, 1988: THE PROPAGATION CHARACTERISTICS OF INTERANNUAL LOW-FREQUENCY OSCILLATIONS IN THE TROPICAL AIR-SEA SYSTEM, ADVANCES IN ATMOSPHERIC SCIENCES, 5, 405-420. doi: 10.1007/BF02656787
[20]	Ni Yunqi, Zhang Qin, 1996: Low Frequency Characteristics of Tropical Pacific Wind Stress Anomalies in Observations and Simulations from a Simple and a Comprehensive Models, ADVANCES IN ATMOSPHERIC SCIENCES, 13, 445-460. doi: 10.1007/BF03342036

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Manuscript History

Manuscript received: 10 January 1996

Manuscript revised: 10 January 1996

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Role of Triad Kinetic Energy Interactions for Maintenance of Upper Tropospheric Low Frequency Waves during Summer Monsoon 1988

1. Indian Institute of Tropical Meteorology, Pune-411008,

Manuscript received: 1996-01-10
Manuscript revised: 1996-01-10

Abstract: In order to determine nonlinear energy exchanges into individual triad interactions in the frequency domain, spectral formulas are derived by use of the cross-spectral technique. First time attempt has been made to understand the problem of maintenance of low frequency waves for tropical weather system by using this technique. The TOGA basic level III daily wind analyses on a 2.5 degree square grid around the global zone from 20oS-30oN at 200 hPa for 92-day periods covering June, July and August of 1988 are used. Kinetic energy is gained at high frequencies and lost at low frequencies. In the planetary scale dynamics over tropics, barotropic nonlinear energy transfer plays a negative role. Low frequency wave of period 45 day loses maximum amount of energy when it interacted with frequencies of periods 92 day and 30 day. 45 day cycle is also the main source of energy for other frequencies. Distrubances of period 15 day gain maximum amount of energy. The major contribution comes from the triad interaction of the frequencies . North of 20oN low frequency waves of period 30 to 92-day gain energy through nonlinear triad interaction with the maximum gain at 22.5oN. The study may help to investigate the rapid loss of predictability of low frequency modes over tropics

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