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基于过去 9500 万年有孔虫 δO 推断的纬度温度梯度及其气候依赖性。

The latitudinal temperature gradient and its climate dependence as inferred from foraminiferal δO over the past 95 million years.

机构信息

Department of Earth and Planetary Sciences, Yale University, New Haven, CT 06511.

Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN 47907.

出版信息

Proc Natl Acad Sci U S A. 2022 Mar 15;119(11):e2111332119. doi: 10.1073/pnas.2111332119. Epub 2022 Mar 7.

DOI:10.1073/pnas.2111332119
PMID:35254906
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8931236/
Abstract

SignificanceThe temperature difference between low and high latitudes is one measure of the efficiency of the global climate system in redistributing heat and is used to test the ability of models to represent the climate system through time. Here, we show that the latitudinal temperature gradient has exhibited a consistent inverse relationship with global mean sea-surface temperature for at least the past 95 million years. Our results help reduce conflicts between climate models and empirical estimates of temperature and argue for a fundamental consistency in the dynamics of heat transport and radiative transfer across vastly different background states.

摘要

意义 低纬度和高纬度之间的温差是衡量全球气候系统在重新分配热量方面效率的一个指标，用于检验模型随时间代表气候系统的能力。在这里，我们表明，至少在过去的 9500 万年中，纬度温度梯度与全球平均海平面温度之间一直存在着相反的关系。我们的研究结果有助于减少气候模型和温度经验估计之间的冲突，并证明在截然不同的背景状态下，热传输和辐射传输的动力学具有基本一致性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/926f/8931236/40dfbd084916/pnas.2111332119fig04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/926f/8931236/9a2dbf941002/pnas.2111332119fig01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/926f/8931236/8a8a5d787909/pnas.2111332119fig02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/926f/8931236/8c333bf72795/pnas.2111332119fig03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/926f/8931236/40dfbd084916/pnas.2111332119fig04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/926f/8931236/9a2dbf941002/pnas.2111332119fig01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/926f/8931236/8a8a5d787909/pnas.2111332119fig02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/926f/8931236/8c333bf72795/pnas.2111332119fig03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/926f/8931236/40dfbd084916/pnas.2111332119fig04.jpg

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