气候变化领域集成服务门户(CCPortal): Particle-Based Lagrangian Filtering for Locating Wave-Generated Thermal Refugia for Coral Reefs

CCPortal

DOI	10.1029/2020JC016106
	Particle-Based Lagrangian Filtering for Locating Wave-Generated Thermal Refugia for Coral Reefs
	Bachman S.D.; Shakespeare C.J.; Kleypas J.; Castruccio F.S.; Curchitser E.
发表日期	2020
ISSN	21699275
卷号	125 期号:7
英文摘要	Tides and tidally generated waves play a key role in modulating the heat budget of the nearshore environment, which can significantly affect the ecology of the coastal and reef zones. The high spatial resolution required to resolve such waves in numerical models means that diagnosing wave-generated heat fluxes (WHFs) has so far only been possible over very limited areas. Because many marine ecosystems that are affected by WHFs, such as coral reefs, are patchily distributed within domains of hundreds of kilometers, an alternative to fully wave-resolving models is needed to identify thermal refugia and guide conservation efforts over larger regions. In this study, a one-way nested series of regional ocean simulations has been conducted to study the role of waves in driving high-frequency temperature variations in the Coral Triangle and to develop a method for identifying WHF in coarser-resolution models. A filtering method using Lagrangian particles is used to separate the wave component of the flow, which is used to diagnose the wave energy and to identify locations experiencing large, high-frequency temperature variability. These locations are shown to possess three key characteristics: large time-mean wave kinetic energy, shallow depth, and a steep bathymetric gradient that gives access to a nearby source of cold, subthermocline water. A function of the wave kinetic energy and bathymetric slope is found to closely correlate with areas of maximal temperature variance, suggesting its use as a convenient and readily calculable metric to locate thermal refugia in observations or numerical experiments over large spatial domains. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	coral reefs; Coral Triangle; internal waves; Lagrangian filtering; tides
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186772
作者单位	National Center for Atmospheric Research, Boulder, CO, United States; Research School of Earth Sciences, and the ARC Centre of Excellence in Climate Extremes, Australian National University, Canberra, ACT, Australia; Department of Environmental Sciences, State University of New Jersey, Rutgers, New Brunswick, NJ, United States
推荐引用方式 GB/T 7714	Bachman S.D.,Shakespeare C.J.,Kleypas J.,et al. Particle-Based Lagrangian Filtering for Locating Wave-Generated Thermal Refugia for Coral Reefs[J],2020,125(7).
APA	Bachman S.D.,Shakespeare C.J.,Kleypas J.,Castruccio F.S.,&Curchitser E..(2020).Particle-Based Lagrangian Filtering for Locating Wave-Generated Thermal Refugia for Coral Reefs.Journal of Geophysical Research: Oceans,125(7).
MLA	Bachman S.D.,et al."Particle-Based Lagrangian Filtering for Locating Wave-Generated Thermal Refugia for Coral Reefs".Journal of Geophysical Research: Oceans 125.7(2020).