The Historical Development of Large-Scale Paleoclimate Field Reconstructions Over the Common Era

IF 25.2 1区 地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS
Jason E. Smerdon, Edward R. Cook, Nathan J. Steiger
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引用次数: 0

Abstract

Climate field reconstructions (CFRs) combine modern observational data with paleoclimatic proxies to estimate climate variables over spatiotemporal grids during time periods when widespread observations of climatic conditions do not exist. The Common Era (CE) has been a period over which many seasonally- and annually-resolved CFRs have been produced on regional to global scales. CFRs over the CE were first produced in the 1970s using dendroclimatic records and linear regression-based approaches. Since that time, many new CFRs have been produced using a wide range of proxy data sets and reconstruction techniques. We assess the early history of research on CFRs for the CE, which provides context for our review of advances in CFR research over the last two decades. We review efforts to derive gridded hydroclimatic CFRs over continental regions using networks of tree-ring proxies. We subsequently explore work to produce hemispheric- and global-scale CFRs of surface temperature using multi-proxy data sets, before specifically reviewing recently-developed data assimilation techniques and how they have been used to produce simultaneous reconstructions of multiple climatic fields globally. We then review efforts to develop standardized and digitized databases of proxy networks for use in CFR research, before concluding with some thoughts on important next steps for CFR development.

Abstract Image

大尺度古气候场重建的历史进展
气候场重建(CFRs)将现代观测数据与古气候代用物相结合,在没有广泛气候条件观测的时间段内估算时空网格上的气候变量。共同年代(CE)是在区域到全球范围内产生许多季节性和年度解决cfr的时期。在20世纪70年代,利用树木气候记录和基于线性回归的方法首次产生了欧洲东部的cfr。从那时起,使用各种代理数据集和重建技术产生了许多新的cfr。我们评估了CE对CFR研究的早期历史,这为我们回顾过去二十年来CFR研究的进展提供了背景。我们回顾了利用树木年轮代用物网络推导大陆地区网格化水文气候CFRs的工作。随后,我们探索了使用多代理数据集生成半球和全球尺度表面温度CFRs的工作,然后专门回顾了最近开发的数据同化技术,以及它们如何用于同时重建全球多个气候场。然后,我们回顾了开发用于CFR研究的标准化和数字化代理网络数据库的努力,最后对CFR发展的下一步重要步骤进行了一些思考。
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来源期刊
Reviews of Geophysics
Reviews of Geophysics 地学-地球化学与地球物理
CiteScore
50.30
自引率
0.80%
发文量
28
审稿时长
12 months
期刊介绍: Geophysics Reviews (ROG) offers comprehensive overviews and syntheses of current research across various domains of the Earth and space sciences. Our goal is to present accessible and engaging reviews that cater to the diverse AGU community. While authorship is typically by invitation, we warmly encourage readers and potential authors to share their suggestions with our editors.
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