气候变化领域集成服务门户(CCPortal): 20th Century Warming in the Western Florida Keys Was Dominated by Increasing Winter Temperatures

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DOI	10.1029/2023PA004748
	20th Century Warming in the Western Florida Keys Was Dominated by Increasing Winter Temperatures
发表日期	2024
ISSN	2572-4517
EISSN	2572-4525
起始页码	39
结束页码	2
卷号	39 期号:2
英文摘要	Long-lived Atlantic coral species like Orbicella faveolata are important archives of oceanographic change in shallow, marine environments like the Florida Keys. Not only can coral-based records extend for multiple centuries beyond the limits of the instrumental record, but they can also provide a more accurate representation of in situ conditions than gridded interpolated sea-surface temperature (SST) products for nearshore reef environments. We use the coral Sr/Ca paleothermometer to produce a 150-year (1830-1980 C.E.) monthly SST reconstruction from an O. faveolata colony collected in the Marquesas Keys, FL, USA. An important feature of our record is a significant 20th-century warming trend in winter SSTs. We hypothesize that the winter warming trend was driven partially by a decrease in upwelling associated cyclonic eddies spinning off the Florida Current. A long-term weakening of winter Florida Current transport over the 20th century could be responsible for decreased cyclonic eddy formation in the Florida Straits. Another feature of the record is pronounced multidecadal fluctuations of mean annual warming and cooling in the record, which correspond to Atlantic Multidecadal Variability (AMV), with the AMV lagging behind western Florida Keys temperatures by 5-11 years. Strong coherence between coral-based SST reconstructions in the western Florida Keys with broader scale Atlantic oceanographic trends over the past century suggests a common driver of regional SST variability. Winter sea-surface temperatures (SSTs) in the Florida Keys increased significantly during the 20th century Florida Current transport may play an important role in modulating SSTs in the western Florida Keys The AMV strongly reflects SSTs in the Gulf of Mexico/Florida Straits
英文关键词	coral; Sr/Ca; paleoceanography; sea surface temperature; Orbicella faveolata; Atlantic multidecadal variability; climate change
语种	英语
WOS研究方向	Geology ; Oceanography ; Paleontology
WOS类目	Geosciences, Multidisciplinary ; Oceanography ; Paleontology
WOS记录号	WOS:001169726000001
来源期刊	PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302045
作者单位	United States Department of the Interior; United States Geological Survey
推荐引用方式 GB/T 7714	. 20th Century Warming in the Western Florida Keys Was Dominated by Increasing Winter Temperatures[J],2024,39(2).
APA	(2024).20th Century Warming in the Western Florida Keys Was Dominated by Increasing Winter Temperatures.PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY,39(2).
MLA	"20th Century Warming in the Western Florida Keys Was Dominated by Increasing Winter Temperatures".PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY 39.2(2024).

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