- 积分
- 27
- 贡献
-
- 精华
- 在线时间
- 小时
- 注册时间
- 2012-3-27
- 最后登录
- 1970-1-1

|

楼主 |
发表于 2015-9-17 15:59:46
|
显示全部楼层
IPCC报告里说某一个时间序列趋势,后面通常有个变化范围(例子附后),这个范围是如何计算的?
Box 2.2, Table 1 | Estimates of the mean change in global mean surface temperature (GMST) between 1901 and 2012, 1901 and 1950, and 1951 and 2012,obtained from the linear (least squares) and nonlinear (smoothing spline) trend models. Half-widths of the 90% confidence intervals are also provided for the estimated changes from the two trend methods.
1901–2012 1901–1950 1951–2012
Least squares 0.075 ± 0.013 0.107 ± 0.026 0.106 ± 0.027
Smoothing spline 0.081 ± 0.010 0.070 ± 0.016 0.090 ± 0.018 |
|