气候变化领域集成服务门户(CCPortal): A Dynamical Framework for Interpreting Ancient Sea Surface Temperatures

CCPortal

DOI	10.1029/2020GL089044
	A Dynamical Framework for Interpreting Ancient Sea Surface Temperatures
	Judd E.J.; Bhattacharya T.; Ivany L.C.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Efforts to estimate past global mean temperature and latitudinal gradients must contend with spatial heterogeneity in sea surface temperatures (SSTs). Here, we use modern SSTs to show that the environments from which most paleoclimatic data are drawn, shallow epeiric seas and continental margins, are systematically offset from zonal mean temperatures. Epeiric seas are warmer and more seasonal than open-ocean values from the same latitudes, while continental margins exhibit consistent and predictable deviations related to gyre circulation. Warm temperatures inferred from Paleozoic proxy data may largely reflect that these data derive almost entirely from epeiric seas. Moreover, pseudoproxy analysis using Paleogene sampling localities demonstrates how undersampling of the full range of dynamical environments associated with gyre circulation can generate spurious estimates of latitudinal temperature gradients. Recognition of these global patterns permits a predictive framework within which to more robustly interpret proxy data, improve Earth system models, and reconstruct ancient dynamic regimes. © 2020 The Authors.
英文关键词	Atmospheric temperature; Pattern recognition systems; Submarine geophysics; Surface properties; Surface waters; Continental margin; Dynamical environment; Global-mean temperature; Latitudinal gradients; Paleoclimatic data; Sea surface temperature (SST); Sea surface temperatures; Spatial heterogeneity; Oceanography; climate modeling; latitudinal gradient; oceanic circulation; paleoceanography; Paleogene; Paleozoic; sea surface; sea surface temperature; seasonal variation
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/170004
作者单位	Department of Earth Sciences, Syracuse University, Syracuse, NY, United States
推荐引用方式 GB/T 7714	Judd E.J.,Bhattacharya T.,Ivany L.C.. A Dynamical Framework for Interpreting Ancient Sea Surface Temperatures[J],2020,47(15).
APA	Judd E.J.,Bhattacharya T.,&Ivany L.C..(2020).A Dynamical Framework for Interpreting Ancient Sea Surface Temperatures.Geophysical Research Letters,47(15).
MLA	Judd E.J.,et al."A Dynamical Framework for Interpreting Ancient Sea Surface Temperatures".Geophysical Research Letters 47.15(2020).