Proxy-Based Northern Hemisphere Surface Temperature Reconstructions: Sensitivity to Method, Predictor Network, Target Season, and Target Domain
Proxy-Based Northern Hemisphere Surface Temperature Reconstructions: Sensitivity to Method, Predictor Network, Target Season, and Target Domain
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DOI：
10.1175/jcli3351.1
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发表时间：
2005-07
影响因子：
4.9
通讯作者：
S. Rutherford;M. Mann;T. Osborn;R. Bradley;K. Briffa;M. Hughes;P. Jones
中科院分区：
文献类型：
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作者：
S. Rutherford;M. Mann;T. Osborn;R. Bradley;K. Briffa;M. Hughes;P. Jones
摘要结果来自一组实验，旨在研究可能影响基于代理的重建大规模温度模式在过去几个世纪的因素。研究的因素包括：1）同化代用数据到气候重建中的方法，2）使用的代用数据网络，3）目标季节，以及4）重建的空间域。半球平均温度的估计是通过空间平均重建的温度模式，是基于代理和仪器数据的本地校准或更精细的多变量气候场重建方法。实验比较的结果的基础上使用的全球多代理数据集的曼和同事，使用的外热带北方半球（NH）最大晚材树轮密度集Briffa和同事。平均温度重建比较完整的NH（热带和热带外，陆地和海洋）和外部。
Abstract Results are presented from a set of experiments designed to investigate factors that may influence proxy-based reconstructions of large-scale temperature patterns in past centuries. The factors investigated include 1) the method used to assimilate proxy data into a climate reconstruction, 2) the proxy data network used, 3) the target season, and 4) the spatial domain of the reconstruction. Estimates of hemispheric-mean temperature are formed through spatial averaging of reconstructed temperature patterns that are based on either the local calibration of proxy and instrumental data or a more elaborate multivariate climate field reconstruction approach. The experiments compare results based on the global multiproxy dataset used by Mann and coworkers, with results obtained using the extratropical Northern Hemisphere (NH) maximum latewood tree-ring density set used by Briffa and coworkers. Mean temperature reconstructions are compared for the full NH (Tropics and extratropics, land and ocean) and ext...