气候变化领域集成服务门户(CCPortal): Frequency-domain analysis of the energy budget in an idealized coupled ocean-atmosphere model

CCPortal

DOI	10.1175/JCLI-D-19-0118.1
	Frequency-domain analysis of the energy budget in an idealized coupled ocean-atmosphere model
	Martin P.E.; Arbic B.K.; Hogg A.M.C.C.; Kiss A.E.; Munroe J.R.; Blundell J.R.
发表日期	2020
ISSN	0894-8755
起始页码	707
结束页码	726
卷号	33 期号:2
英文摘要	Climate variability is investigated by identifying the energy sources and sinks in an idealized, coupled, ocean-atmosphere model, tuned to mimic the North Atlantic region. The spectral energy budget is calculated in the frequency domain to determine the processes that either deposit energy into or extract energy from each fluid, over time scales from one day up to 100 years. Nonlinear advection of kinetic energy is found to be the dominant source of low-frequency variability in both the ocean and the atmosphere, albeit in differing layers in each fluid. To understand the spatial patterns of the spectral energy budget, spatial maps of certain terms in the spectral energy budget are plotted, averaged over various frequency bands. These maps reveal three dynamically distinct regions: along the western boundary, the western boundary current separation, and the remainder of the domain. The western boundary current separation is found to be a preferred region to energize oceanic variability across a broad range of time scales (from monthly to decadal), while the western boundary itself acts as the dominant sink of energy in the domain at time scales longer than 50 days. This study paves the way for future work, using the same spectral methods, to address the question of forced versus intrinsic variability in a coupled climate system. © 2019 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).
英文关键词	Budget control; Climate models; Kinetic energy; Kinetics; Oceanography; Time measurement; Climate variability; Coupled climate systems; Energy sources and sinks; Intrinsic variabilities; Low frequency variability; Ocean-atmosphere models; Oceanic variabilities; Western boundary currents; Frequency domain analysis; air-sea interaction; atmosphere-ocean coupling; boundary current; climate variation; energy budget; kinetic energy; nonlinearity; timescale; Atlantic Ocean; Atlantic Ocean (North)
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171482
作者单位	Department of Physics, University of Michigan, Ann Arbor, MI, United States; Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, United States; Research School of Earth Sciences, ARC Centre of Excellence for Climate Extremes, Australian National University, Canberra, ACT, Australia; Department of Physics and Physical Oceanography, Memorial University of Newfoundland, St. John's, NL, Canada; Ocean and Earth Science, National Oceanography Centre, University of Southampton Waterfront Campus, Southampton, United Kingdom
推荐引用方式 GB/T 7714	Martin P.E.,Arbic B.K.,Hogg A.M.C.C.,et al. Frequency-domain analysis of the energy budget in an idealized coupled ocean-atmosphere model[J],2020,33(2).
APA	Martin P.E.,Arbic B.K.,Hogg A.M.C.C.,Kiss A.E.,Munroe J.R.,&Blundell J.R..(2020).Frequency-domain analysis of the energy budget in an idealized coupled ocean-atmosphere model.Journal of Climate,33(2).
MLA	Martin P.E.,et al."Frequency-domain analysis of the energy budget in an idealized coupled ocean-atmosphere model".Journal of Climate 33.2(2020).