Advanced   Register
XTBG OpenIR  > 2012年后新成立研究组  > 期刊论文

title: A multi-proxy reconstruction of spatial and temporal variations in Asian summer temperatures over the last millennium
author: Shi, Feng;  Ge, Quansheng;  Yang, Bao;  Li, Jianping;  Yang, Fengmei;  Ljungqvist, Fredrik Charpentier;  Solomina, Olga;  Nakatsuka, Takeshi;  Wang, Ninglian;  Zhao, Sen;  Xu, Chenxi;  Fang, Keyan;  Sano, Masaki;  Chu, Guoqiang;  Fan, Zexin;  Gaire, Narayan P.;  Zafar, Muhammad Usama
Issued Date: 2015
Abstract: To investigate climate variability in Asia during the last millennium, the spatial and temporal evolution of summer (June-July-August; JJA) temperature in eastern and south-central Asia is reconstructed using multi-proxy records and the regularized expectation maximization (RegEM) algorithm with truncated total least squares (TTLS), under a point-by-point regression (PPR) framework. The temperature index reconstructions show that the late 20th century was the warmest period in Asia over the past millennium. The temperature field reconstructions illustrate that temperatures in central, eastern, and southern China during the 11th and 13th centuries, and in western Asia during the 12th century, were significantly higher than those in other regions, and comparable to levels in the 20th century. Except for the most recent warming, all identified warm events showed distinct regional expressions and none were uniform over the entire reconstruction area. The main finding of the study is that spatial temperature patterns have, on centennial time-scales, varied greatly over the last millennium. Moreover, seven climate model simulations, from the Coupled Model Intercomparison Project Phase 5 (CMIP5), over the same region of Asia, are all consistent with the temperature index reconstruction at the 99 % confidence level. Only spatial temperature patterns extracted as the first empirical orthogonal function (EOF) from the GISS-E2-R and MPI-ESM-P model simulations are significant and consistent with the temperature field reconstruction over the past millennium in Asia at the 90 % confidence level. This indicates that both the reconstruction and the simulations depict the temporal climate variability well over the past millennium. However, the spatial simulation or reconstruction capability of climate variability over the past millennium could be still limited. For reconstruction, some grid points do not pass validation tests and reveal the need for more proxies with high temporal resolution, accurate dating, and sensitive temperature signals, especially in central Asia and before AD 1400.
Related URLs: 10.1007/s10584-015-1413-3
Appears in Collections:2012年后新成立研究组_期刊论文

Files in This Item:

File SizeFormat
A multi-proxy reconstruction of spatial and temporal variations in Asian summer temperatures over the last millennium.pdf2053KbAdobe PDFView  Download

全文许可: Creative Commons 署名-非商业性使用-相同方式共享 3.0

Recommended Citation:
Shi, Feng,Ge, Quansheng,Yang, Bao,et al. A Multi-proxy Reconstruction Of Spatial And Temporal Variations In Asian Summer Temperatures Over The Last Millennium[J]. Climatic Change,2015,131(4):663-676.

SCI Citaion Data:
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Shi, Feng]'s Articles
 [Ge, Quansheng]'s Articles
 [Yang, Bao]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Shi, Feng]‘s Articles
 [Ge, Quansheng]‘s Articles
 [Yang, Bao]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to  Add to Digg  Add to Reddit 
所有评论 (0)
内 容:
Email:  *
验证码:   刷新
标 题:
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.



Valid XHTML 1.0!
Powered by CSpace