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The Historical Development of Large-Scale Paleoclimate Field Reconstructions Over the Common Era
Reviews of Geophysics ( IF 25.2 ) Pub Date : 2023-09-20 , DOI: 10.1029/2022rg000782
Jason E. Smerdon 1, 2 , Edward R. Cook 1, 2 , Nathan J. Steiger 2, 3
Affiliation  

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.

中文翻译:

历代大规模古气候场重建的历史进展

气候场重建(CFR)将现代观测数据与古气候代理相结合,以估计在不存在广泛的气候条件观测的时期内时空网格上的气候变量。共同时代 (CE) 是一个在区域到全球范围内产生了许多季节性和年度解决的 CFR 的时期。CE 上的 CFR 首次于 20 世纪 70 年代使用树状气候记录和基于线性回归的方法产生。从那时起,使用各种代理数据集和重建技术生成了许多新的 CFR。我们评估了 CE 的 CFR 研究的早期历史,这为我们回顾过去二十年 CFR 研究进展提供了背景。我们回顾了利用树木年轮代理网络导出大陆地区网格化水文气候 CFR 的努力。随后,我们探索了使用多代理数据集生成半球和全球尺度的地表温度 CFR 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生成全球多个气候场的同步重建。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 开发的重要后续步骤提出了一些想法。在具体回顾最近开发的数据同化技术以及如何使用它们来同步重建全球多个气候场之前。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 开发的重要后续步骤提出了一些想法。在具体回顾最近开发的数据同化技术以及如何使用它们来同步重建全球多个气候场之前。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 开发的重要后续步骤提出了一些想法。
更新日期:2023-09-20
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