DOI: 10.1002/grl.50387
论文题名: Radiation of inertial kinetic energy as near-inertial waves forced by tropical Pacific Easterly waves
作者: Soares S.M. ; Richards K.J.
刊名: Geophysical Research Letters
ISSN: 0094-9101
EISSN: 1944-8832
出版年: 2013
卷: 40, 期: 9 起始页码: 1760
结束页码: 1765
语种: 英语
英文关键词: easterly waves
; inertial kinetic energy
; mixing
; modeling
; near-inertial waves
; turbulence
Scopus关键词: Atmospheric disturbance
; Easterly wave
; Near inertial energy
; Near-inertial waves
; One-dimensional turbulence model
; Radiation energy
; Tropical atmospheres
; Turbulent dissipation
; Kinetic energy
; Mixing
; Models
; Tropical engineering
; Turbulence
; Turbulence models
; Kinetics
; buoy system
; damping
; disturbance
; easterly wave
; energy flux
; kinetic energy
; mixed layer
; one-dimensional modeling
; turbulence
; turbulent mixing
; wave force
; Pacific Ocean
; Pacific Ocean (Tropical)
英文摘要: Easterly waves (EW) are low level tropical atmospheric disturbances able to resonantly force strong mixed layer inertial currents. Using data from two Tropical Atmosphere Ocean/Eastern Pacific Investigation of Climate Processes (TAO/EPIC) buoys located along 95°W and a multiparameterization one-dimensional turbulence model, we examine how the EW-forced surface inertial kinetic energy (IKE) loss is partitioned between turbulent dissipation and near-inertial wave (NIW) radiation. Several EW-forcing events are individually simulated with a version of the General Ocean Turbulence Model modified to include a linear damping coefficient to account for the NIW radiation energy sink. The kinetic energy budget of these simulations shows that NIW radiation accounted for typically 50-60% of the IKE loss and in some cases up to 80%. These empirically derived estimates of the contribution of the radiated NIWs to the loss of wind-induced surface IKE are substantially higher than recently published numerical estimates. Furthermore, the results indicate that the vertical NIW energy flux increases linearly with the wind input of IKE, an easily obtained quantity. The NIW vertical energy flux estimated for a single near-resonant event is comparable to extreme north Pacific wintertime-averaged fluxes, indicating the existence of important episodic sources of near-inertial energy available for mixing within and below the thermocline in the tropical region. Key Points Easterly wave forcing and high stratification produce strong NIW radiation50-60% of the wind inertial kinetic energy input is radiated away as NIWsThe NIW energy flux increases linearly with the wind work ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879072676&doi=10.1002%2fgrl.50387&partnerID=40&md5=07024621eda06d44b91d92635408a0ad
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6365
Appears in Collections: 气候减缓与适应
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作者单位: Department of Oceanography, University of Hawai'i at Ma'noa, 1000 Pope road, Honolulu, HI 96822, United States
Recommended Citation:
Soares S.M.,Richards K.J.. Radiation of inertial kinetic energy as near-inertial waves forced by tropical Pacific Easterly waves[J]. Geophysical Research Letters,2013-01-01,40(9).