气候变化研究进展 ›› 2025, Vol. 21 ›› Issue (2): 169-185.doi: 10.12006/j.issn.1673-1719.2024.205

• 创刊20周年纪念专栏 • 上一篇    下一篇

能量收支框架下从辐射强迫-气候反馈到气候敏感度的研究进展

于晓超1, 张华1(), 王秋艳2, 赵树云3, 王菲4, 柳丽婷1, 刘梦婷1,5, 马馨宇1,3, 杨冬冬6, 李帅7   

  1. 1 中国气象科学研究院灾害天气国家重点实验室,北京 100081
    2 近地面探测技术重点实验室,无锡 214035
    3 中国地质大学(武汉)环境学院,武汉 430078
    4 安徽省公共气象服务中心,合肥 230031
    5 复旦大学大气与海洋科学系,上海 200438
    6 曲阜师范大学地理与旅游学院,日照 276826
    7 东华大学环境科学与工程学院,上海 201620
  • 收稿日期:2024-08-01 修回日期:2024-10-18 出版日期:2025-03-30 发布日期:2025-02-27
  • 通讯作者: 张华,女,研究员,huazhang@cma.gov.cn
  • 作者简介:于晓超,男,助理研究员
  • 基金资助:
    国家自然基金面上和重点基金项目(42275039);国家自然基金面上和重点基金项目(U2342224);国家重点研发计划项目(2017YFA0603502);国家重点研发计划项目(2022YFC3701202);中国气象科学研究院科技发展基金(2024KJ021)

Advancements in the understanding of radiative forcing, climate feedback, and climate sensitivity within the energy budget framework

YU Xiao-Chao1, ZHANG Hua1(), WANG Qiu-Yan2, ZHAO Shu-Yun3, WANG Fei4, LIU Li-Ting1, LIU Meng-Ting1,5, MA Xin-Yu1,3, YANG Dong-Dong6, LI Shuai7   

  1. 1 State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China
    2 Science and Technology on Near-Surface Detection Laboratory, Wuxi 214035, China
    3 School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
    4 Anhui Public Meteorological Service Center, Hefei 230031, China
    5 Department of Atmospheric and Oceanic Sciences & Institute of Atmospheric Sciences, Fudan University, Shanghai 200438, China
    6 School of Geography and Tourism, Qufu Normal University, Rizhao 276826, China
    7 College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
  • Received:2024-08-01 Revised:2024-10-18 Online:2025-03-30 Published:2025-02-27

摘要:

从能量框架出发,对地球能量收支、有效辐射强迫、气候反馈和气候敏感度的相关研究做出系统的梳理。自20世纪80年代以来,地球能量收支增加0.28~0.52 W/m2,主要来源于大气顶反射太阳辐射持续减少,这是该时期全球升温的重要决定性因素。这些能量收支的改变与人为强迫及其气候影响密切相关。政府间气候变化专门委员会(IPCC)第六次评估报告(AR6)指出,1750—2019年,总的人为有效辐射强迫的最佳估计为(2.72±0.76)W/m2,引起的全球地表温度变化预计可达1.29(1.00~1.65)℃。气候反馈总体上能够抵消辐射强迫对地球系统的整体扰动,使气候状态趋于稳定。IPCC AR6给出的净反馈最佳估计结果为-1.16(-1.81~-0.51)W/(m2·℃)。为了预估未来气候变化,IPCC AR6给出了平衡态气候敏感度和瞬态气候响应的最佳估计值,分别为3.0(2.0~5.0)℃和1.8(1.2~2.4)℃。依据能量收支平衡下强迫-反馈理论框架,科学界通过量化地球能量收支及其长期变化、区分辐射强迫与气候反馈,厘清了人为和自然等外部强迫对气候变化的影响;依据气候反馈参数和气候敏感度的估算结果,可量化气候对强迫的响应幅度,实现对未来气候的合理预估。

关键词: 地球能量收支, 有效辐射强迫, 气候反馈, 气候敏感度

Abstract:

From the perspective of the energy framework, related research on Earth’s energy budget, effective radiative forcing, climate feedback, and climate sensitivity is systematically reviewed. Since the 1980s, Earth’s energy budget has increased by 0.28-0.52 W/m2, primarily due to a sustained reduction in reflected solar radiation at the top of atmosphere. This is a crucial factor driving global warming during this period. These changes in the energy balance are closely linked to anthropogenic forcings and their effects on the climate. The Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6) indicates that during the period of 1750-2019, the best estimate of total anthropogenic effective radiative forcing is (2.72±0.76) W/m2, which is projected to result in a global surface temperature increase of approximately 1.29 (1.00-1.65) ℃. Overall, climate feedback can offset the comprehensive disturbance caused by radiative forcing to the Earth system, helping to stabilize the climate state. The best estimate of net feedback provided by IPCC AR6 is -1.16 (-1.81--0.51) W/(m2·℃). To project future climate change, the IPCC AR6 provides best estimates for equilibrium climate sensitivity and transient climate response as 3.0℃ and 1.8℃, respectively, with very likely ranges of 2.0-5.0℃ and 1.2-2.4℃. Based on the forcing-feedback framework under the energy budget balance, the scientific community has clarified the impact of external forcings, such as anthropogenic and natural factors, on climate change by quantifying the Earth’s energy budget and its long-term changes, and by distinguishing between radiative forcing and climate feedback. Based on the best estimates of climate feedback parameters and climate sensitivity, the magnitude of the climate response to forcing can be quantified, enabling reasonable projections of the future climate.

Key words: Earth’s energy budget, Effective radiative forcing, Climate feedback, Climate sensitivity

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