Table 1 Scaling factors and PW trends estimated from single-signal analysis, two-signal analysis and three-signal analysis over China during 1973–2012.

From: Detection and Attribution of Atmospheric Precipitable Water Changes since the 1970s over China

Regions

Scaling factors

Trends (mm/40 yr)

single-signal

two-signal

three-signal

OBS

single-signal

two-signal

three-signal

ALL

ANT

NAT

GHG

ANTnoGHG

NAT

ALL

ANT

NAT

GHG

ANTnoGHG

NAT

Whole China

1.13

(0.77~1.49)

1.40

(0.85~1.95)

0.46

(−0.40~1.32)

1.52

(0.73~2.31)

0.42

(−0.60~1.44)

0.54

(−0.38~1.46)

1.23

1.19

(0.81~1.57)

1.11

(0.67~1.55)

0.12

(−0.10~0.34)

1.64

(0.79~2.49)

−0.12

(−0.41~0.17)

0.14

(−0.10~0.38)

Eastern China (east of 105°E)

0.93

(0.53~1.33)

1.25

(0.75~1.75)

0.11

(−0.65~0.87)

1.71

(0.80~2.62)

0.72

(−0.40~1.84)

0.09

(−0.81~0.99)

1.31

1.24

(0.71~1.77)

1.23

(0.74~1.72)

0.04

(−0.22~0.30)

2.39

(1.12~3.66)

−0.29

(−0.75~0.17)

0.03

(−0.27~0.33)

  1. The PW trends are adjusted by the corresponding scaling factors, and the values in parentheses are their 90% confidence interval. All of the underlined values denote that the raw (unadjusted) trends both of observations and simulations are statistically significant at the 5% level.
Back to article page