气候变化研究进展 ›› 2020, Vol. 16 ›› Issue (4): 491-504.doi: 10.12006/j.issn.1673-1719.2019.111
李柔珂1,2(), 韩振宇1(
), 徐影1, 石英1, 吴佳1
收稿日期:
2019-05-16
修回日期:
2019-07-18
出版日期:
2020-07-30
发布日期:
2020-08-05
通讯作者:
韩振宇
作者简介:
李柔珂,女,助理研究员, 基金资助:
LI Rou-Ke1,2(), HAN Zhen-Yu1(
), XU Ying1, SHI Ying1, WU Jia1
Received:
2019-05-16
Revised:
2019-07-18
Online:
2020-07-30
Published:
2020-08-05
Contact:
HAN Zhen-Yu
摘要:
基于RCP4.5(中等温室气体排放)情景下5个全球模式模拟结果的降尺度数据,及SSP2社会经济路径下的GDP和人口密度数据,对21世纪京津冀地区(北京、天津和河北的统称)未来2021—2040年(近期)、2046—2065年(中期)、2080—2099年(末期)的高温GDP和人口暴露度进行多模式集合预估。结果表明:未来京津冀地区热事件将增加,21世纪末期京津冀东南部平原和沿海地区的闷热事件、中部平原地区的高温事件出现频率明显增加。GDP和人口暴露度大值区主要分布在北京、天津、保定、石家庄和邯郸等经济发达、交通便利、人口聚集的城市及其周边地区。21世纪京津冀地区的GDP暴露度区域平均值持续增加,21世纪末期多年平均值约为参照时段的58.9倍;各城市的区域平均值也表现出一致增加。京津冀地区人口暴露度区域平均值在21世纪中期达到最大,为参照时段的2.3倍;北京、秦皇岛、张家口、承德和唐山人口暴露度区域平均值将持续增长,其他城市人口暴露度区域平均值在21世纪中期达到最大。GDP暴露度的变化主要取决于非线性因子,且其贡献率随时间逐渐增加,到21世纪末期可达70.9%。21世纪近期和中期人口暴露度的变化主要取决于非线性因子,气候因子在末期占主导地位。
李柔珂, 韩振宇, 徐影, 石英, 吴佳. 高分辨率区域气候变化降尺度数据对京津冀地区高温GDP和人口暴露度的集合预估[J]. 气候变化研究进展, 2020, 16(4): 491-504.
LI Rou-Ke, HAN Zhen-Yu, XU Ying, SHI Ying, WU Jia. An ensemble projection of GDP and population exposure to high temperature events over Jing-Jin-Ji district based on high resolution combined dynamical and statistical downscaling datasets[J]. Climate Change Research, 2020, 16(4): 491-504.
图1 夏半年TX、TN和RH集合平均模拟误差的泰勒图(a)及集合平均模拟的HD和SD与观测的差(b、c) 注:标记“+”指模拟与观测的差值达到0.05显著性水平的点。
Fig. 1 Taylor diagram for ensemble average simulation error of TX, TN and RH in the summer half year by using the station data (a); differences of HD (b) and SD (c) over the entire Jing-Jin-Ji area between the ensemble mean and observation
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表1 降尺度数据5个集合成员和集合平均模拟的京津冀HD和SD与观测的空间相关系数、平均误差和均方根误差
Table 1 The correlation coefficient, mean error and root mean square error of HD and SD over the entire Jing-Jin-Ji area between the simulations and observation
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图2 京津冀地区致灾危险度在参照时段(1986—2005年)以及未来变化的空间分布(相对于参照时段)
Fig. 2 Spatial distribution of the present day (1986-2005) and spatial distribution of the future change of hazard factor over the Jing-Jin-Ji district compared with the present day
图3 京津冀地区区域平均致灾危险度相对于参照时段的变化值序列(a、b)和区域平均GDP和人口的数值序列(c) 注:图(c)中蓝色五角星表示GDP增长过程中数值开始超过参照时段平均值1倍的时间点,红色五角星表示人口下降过程中数值开始低于参照时段平均值的时间点。
Fig. 3 Future change of hazard factor over the Jing-Jin-Ji district compared with the present day (a, b), and regional average value of GDP and population (c) (In (c), blue star indicates the time point when the regional average value exceeds 1 time of average value of the reference period in the process of GDP rising, and red star indicates the time point when the regional average value is lower than the value of reference period in the process of population falling)
图4 京津冀GDP 和人口密度在参照时段和21世纪各时段的变化的空间分布
Fig. 4 Spatial distribution of GDP and population in the present day and the change of future periods in the 21st century over the Jing-Jin-Ji district
图5 京津冀GDP和人口高温暴露度在参照时段和21世纪各时段的变化空间分布
Fig. 5 Spatial distribution of GDP and population exposure in the present day and the change of future periods in the 21st century over the Jing-Jin-Ji district
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表2 京津冀主要城市的GDP和人口暴露度相对于参照时段的倍率的时空变化
Table 2 Regional mean changes of GDP/population exposures ratio compared with the present day (1986—2005) over some cities of Jing-Jin-Ji district, respectively
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表3 京津冀地区高温的GDP/人口暴露度变化的影响因子贡献率分析
Table 3 Analysis of the influencing factors of population exposure and GDP exposure to high temperature in Jing-Jin-Ji district
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图7 21世纪近期、中期、末期京津冀地区及各城市GDP/人口暴露度影响因子贡献率
Fig. 7 Contribution rates of influencing factors of GDP/population exposures in cities of Jing-Jin-Ji district during three future periods
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