气候变化领域集成服务门户(CCPortal): The Air-Sea Response During Hurricane Irma's (2017) Rapid Intensification Over the Amazon-Orinoco River Plume as Measured by Atmospheric and Oceanic Observations

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DOI	10.1029/2019JD032368
	The Air-Sea Response During Hurricane Irma's (2017) Rapid Intensification Over the Amazon-Orinoco River Plume as Measured by Atmospheric and Oceanic Observations
	Rudzin J.E.; Chen S.; Sanabia E.R.; Jayne S.R.
发表日期	2020
ISSN	2169897X
卷号	125 期号:18
英文摘要	Hurricane Irma (2017) underwent rapid intensification (RI) while passing over the Amazon-Orinoco River plume in the tropical Atlantic. The freshwater discharge from the plume creates a vertical salinity gradient that suppresses turbulent heat flux from the cool, ocean subsurface. The stability within the plume reduces sea surface temperature (SST) cooling and promotes energetic air-sea fluxes. Hence, it is hypothesized that this ocean feature may have facilitated Irma's RI through favorable upper ocean conditions. This hypothesis is validated using a collection of atmospheric and oceanic observations to quantify how the ocean response influences surface flux and atmospheric boundary layer thermodynamics during Hurricane Irma's RI over the river plume. Novel aircraft-deployed oceanic profiling floats highlight the detailed evolution of the ocean response during Irma's passage over the river plume. Analyses include quantifying the ocean response and identifying how it influenced atmospheric boundary layer temperature, moisture, and equivalent potential temperature (θE). An atmospheric boundary layer recovery analysis indicates that surface fluxes were sufficient to support the enhanced boundary layer θE (moist entropy) observed, which promotes inner-core convection and facilitates TC intensification. The implicit influence of salinity stratification on Irma's intensity during RI is assessed using theoretical intensity frameworks. Overall, the findings suggest that the salinity stratification sustained SST during Irma's passage, which promoted energetic air-sea fluxes that aided in boundary layer recovery and facilitated Irma's intensity during RI. Examination of the air-sea coupling over this river plume, corresponding atmospheric boundary layer response, and feedback on TC intensity was previously absent in literature. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	air-sea interaction; atmospheric boundary layer; Hurricane Irma; river plume; tropical cyclone; upper ocean response
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185751
作者单位	National Research Council, U.S. Naval Research Laboratory, Monterey, CA, United States; Marine Meteorology Division, U.S. Naval Research Laboratory, Monterey, CA, United States; Oceanography Department, U.S. Naval Academy, Annapolis, MD, United States; Physical Oceanography Department, Woods Hole Oceanographic Institute, Woods Hole, MA, United States
推荐引用方式 GB/T 7714	Rudzin J.E.,Chen S.,Sanabia E.R.,et al. The Air-Sea Response During Hurricane Irma's (2017) Rapid Intensification Over the Amazon-Orinoco River Plume as Measured by Atmospheric and Oceanic Observations[J],2020,125(18).
APA	Rudzin J.E.,Chen S.,Sanabia E.R.,&Jayne S.R..(2020).The Air-Sea Response During Hurricane Irma's (2017) Rapid Intensification Over the Amazon-Orinoco River Plume as Measured by Atmospheric and Oceanic Observations.Journal of Geophysical Research: Atmospheres,125(18).
MLA	Rudzin J.E.,et al."The Air-Sea Response During Hurricane Irma's (2017) Rapid Intensification Over the Amazon-Orinoco River Plume as Measured by Atmospheric and Oceanic Observations".Journal of Geophysical Research: Atmospheres 125.18(2020).