气候变化领域集成服务门户(CCPortal): Constraining Southern Ocean CO2 Flux Uncertainty Using Uncrewed Surface Vehicle Observations

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DOI	10.1029/2020GL091748
	Constraining Southern Ocean CO2 Flux Uncertainty Using Uncrewed Surface Vehicle Observations
	Sutton A.J.; Williams N.L.; Tilbrook B.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:3
英文摘要	Remote, harsh conditions of the Southern Ocean challenge our ability to observe the region’s influence on the climate system. Southern Ocean air-sea CO2 flux estimates have significant uncertainty due to the reliance on limited ship-dependent observations in combination with satellite-based and interpolated data products. We utilize a new approach, making direct measurements of air-sea CO2, wind speed, and surface ocean properties on an Uncrewed Surface Vehicle (USV). In 2019, the USV completed the first autonomous circumnavigation of Antarctica providing hourly CO2 flux estimates. Using this unique data set to constrain potential error in different measurements and propagate those through the CO2 flux calculation, we find that different wind speed products and sampling frequencies have the largest impact on CO2 flux estimates with biases that range from −4% to +20%. These biases and poorly constrained interannual variability could account for discrepancies between different approaches to estimating Southern Ocean CO2 uptake. © 2021. The Authors. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
英文关键词	Carbon dioxide; Oceanography; Wind; Climate system; Dependent observations; Direct measurement; Interannual variability; New approaches; Potential errors; Sampling frequencies; Surface vehicles; Uncertainty analysis
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169158
作者单位	Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, Seattle, WA, United States; University of South Florida, St. Petersburg, FL, United States; Oceans and Atmosphere, Commonwealth Scientific and Industrial Research Organisation, Hobart, TAS, Australia; Australian Antarctic Program Partnership, University of Tasmania, Hobart, Australia
推荐引用方式 GB/T 7714	Sutton A.J.,Williams N.L.,Tilbrook B.. Constraining Southern Ocean CO2 Flux Uncertainty Using Uncrewed Surface Vehicle Observations[J],2021,48(3).
APA	Sutton A.J.,Williams N.L.,&Tilbrook B..(2021).Constraining Southern Ocean CO2 Flux Uncertainty Using Uncrewed Surface Vehicle Observations.Geophysical Research Letters,48(3).
MLA	Sutton A.J.,et al."Constraining Southern Ocean CO2 Flux Uncertainty Using Uncrewed Surface Vehicle Observations".Geophysical Research Letters 48.3(2021).