| 太阳辐射管理地球工程对海洋酸化影响的模拟研究 |
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| 引用本文： | 温作龙,姜玖,曹龙.太阳辐射管理地球工程对海洋酸化影响的模拟研究[J].气候变化研究进展,2019,15(1):41-53. |
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| 作者姓名： | 温作龙 姜玖 曹龙 |
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| 作者单位： | 浙江大学地球科学学院大气科学系,杭州 310027 |
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| 基金项目： | 国家重大基础科学研究计划项目(2015CB953601);国家自然科学基金项目(41675063);国家自然科学基金项目(41422503);中央高校基本科研业务费专项资金 |
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| 摘 要： | 研究地球工程对海洋酸化的影响对于评估地球工程对全球气候和环境的影响有重要意义。文中使用中等复杂程度的地球系统模式,模拟了典型CO2高排放情景RCP8.5下,实施太阳辐射管理地球工程对海洋表面的pH和文石（碳酸钙的一种亚稳形态）饱和度的影响,并定量分析了各环境因子对海洋酸化影响的机理。模拟结果表明,在RCP8.5情景下,到2100年,相对于工业革命前水平,全球海洋表面平均pH下降了0.43,文石饱和度下降了1.77。相对于RCP8.5情景,2100年地球工程情景下全球海洋表面平均pH增加了0.003,而文石饱和度降低了0.16。地球工程通过改变溶解无机碳、碱度、温度等环境因子影响海洋酸化。相对于RCP8.5情景,实施地球工程引起的溶解无机碳浓度的增加使pH和文石饱和度均减小,碱度的增加使pH和文石饱和度均增大,温度的降低使pH增大而使文石饱和度减小。总体而言,太阳辐射管理地球工程可以降低全球温度,但无法减缓海洋酸化。
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| 关 键 词： | 地球工程 太阳辐射管理 海洋酸化 气候变化 地球系统模拟 |
| 收稿时间： | 2018-05-02 |
| 修稿时间： | 2018-08-22 |
Simulated effects of solar geoengineering on ocean acidification |
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| Zuo-Long WEN,Jiu JIANG,Long CAO.Simulated effects of solar geoengineering on ocean acidification[J].Advances in Climate Change,2019,15(1):41-53. |
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| Authors: | Zuo-Long WEN Jiu JIANG Long CAO |
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| Institution: | Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | To have a more complete evaluation of the solar geoengineering effect on global climate, it is of great importance to examine the effects of geoengineering on ocean acidification. In this study the UVic Earth System Model was used to simulate the effects of solar geoengineering on sea surface pH and aragonite (a metastable form of calcium carbonate) saturation (Ω). We run the UVic model from pre-industrial to the year 2100 under RCP8.5 scenario, and quantified the effects of individual environment factors on ocean acidification. The simulations show that by the year 2100, relative to pre-industrial levels, global mean sea surface pH would decrease by 0.43 and Ω state will decrease by 1.77. Relative to the RCP8.5 scenario without geoengineering, by the year 2100, solar geoengineering would increase sea surface pH by 0.003, but decrease Ω by 0.16. Relative to the RCP8.5 scenario without geoengineering, geoengineering-induced increase of dissolved inorganic carbon would decrease pH and Ω, but the increase of alkalinity would increase pH and Ω. Geoengineering-induced decrease of temperature would increase pH but decrease Ω. The net effect of solar geoengineering on pH and Ω is small. Our study indicates that solar geoengineering could cool the earth but fails to mitigate ocean acidification. |
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| Keywords: | Geoengineering Solar radiation management Ocean acidification Climate change Earth system simulation |
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