Table 1 (a) Selected published temperature reconstructions over China or Asia.

From: East Asian warm season temperature variations over the past two millennia

(a)

Reconstruction name

Number of proxy data

Method

Season

Region

Climate field reconstruction?

Publication

Shi2015

418 multi-proxy (including 392 tree-ring chronologies)

Regularized expectation maximization algorithm

Summer

Asia

Yes

10

Cook2013

229 tree-ring proxies

point-by-point regression

Summer

East Asia

Yes

5,9

Ge2013

22 multi-proxy

Composite method

Annual

China

No

26

Yang2002-weighted

9 multi-proxy

Composite method

Annual

China

No

27

(b)

Cor.

BHM-median

BHM-deepest

Shi2015

Cook2013

Ge2013

BHM61-deepest

0.83

    

Shi2015

0.68

0.52

   

Cook2013

0.46

0.40

0.79

—

 

Ge2013

0.55

0.44

0.47

0.24

—

Yang2002

0.62

0.45

0.45

0.28

0.51

  1. (b) Pearson correlation analysis among different reconstructions of decadal temperature for the period 901-1990 CE, df = 107 (p<0.01 are in bold). The critical value for significant correlation at the level p = 0.01 is 0.25. It should be kept in mind that the real p-value is probably much higher than 0.01 due to strong autocorrelation in the reconstructions.
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