Aerosol radiative effects on the global land carbon sink
气溶胶辐射对全球陆地碳汇的影响
基本信息
- 批准号:2886155
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:英国
- 项目类别:Studentship
- 财政年份:2023
- 资助国家:英国
- 起止时间:2023 至 无数据
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
This project will use state-of-the-art satellite observations and global models to evaluate the role of aerosol radiative effects on the land carbon sink. Atmospheric CO2 concentrations have increased by 50% since the Industrial Revolution (from 278ppm in 1750 to over 420ppm in 2022), contributing about 80% of the total anthropogenic radiative forcing on climate. This dramatic increase has so far been mitigated by the land and ocean carbon sinks absorbing over half of the total CO2 emitted by human activities (Friedlingstein et al., 2022). Accurate estimates of these carbon sinks is essential for projecting future climate change and developing effective climate policies. However, many global vegetation models used in current global carbon budget assessments do not include a full representation of important processes such as diffuse light fertilisation (see Fig. 1; Mercado et al., 2009; Rap et al., 2018). As a result, a "budget imbalance" term is currently needed to close the carbon budget equation. The large variability of this carbon budget imbalance is believed to be caused by errors in the land carbon sink (Friedlingstein et al., 2022). The overarching aim of the project is to improve our understanding of how aerosol particles affect the land carbon sink. In particular, the project will investigate the role of competing effects on the land carbon sink due to the variability in temperature, precipitation and diffuse radiation on semi-decadal timescales. The approach will involve a combination of remote sensing analysis (e.g. Global Ecosystem Dynamics Investigation - GEDI (Hancock et al., 2019); Clouds and the Earth's Radiant Energy System - CERES) and model simulations (i.e. aerosol, radiation and vegetation models, together with UK Earth System Model - UKESM simulations).Within the diverse supervision team we have the ability to observe and simulate biosphere-atmosphere interactions in a more comprehensive way than ever before. This project will therefore provide a unique opportunity to employ state-of-the-art satellite observations and global models to answer a series of key questions. While relatively flexible to allow for your interests, the project will involve:-A comprehensive assessment of global forest structure and above-ground biomass density using remote sensing products (e.g. GEDI, ICESat-2, NISAR).- Using satellite observations to constrain simulated semi-decadal Net Primary Productivity trends, including via advanced computer techniques (e.g. bias correction and data-driven algorithms).- Exploring the role of anthropogenic aerosol and other pollutants (e.g. ozone) on the efficiency of UKESM simulated ecosystem feedbacks.- Investigating the effect of changes in temperature, precipitation and atmospheric CO2 on biosphere-atmosphere interactions in the UKESM model.
该项目将利用最先进的卫星观测和全球模型来评估气溶胶辐射对陆地碳汇的作用。自工业革命以来,大气CO2浓度增加了50%(从1750年的278 ppm增加到2022年的420 ppm以上),占人类对气候的总辐射强迫的80%左右。到目前为止,陆地和海洋碳汇吸收了人类活动排放的二氧化碳总量的一半以上,这一急剧增加得到了缓解(Friedlingstein等人,2022年)。准确估计这些碳汇对于预测未来气候变化和制定有效的气候政策至关重要。然而,目前全球碳收支评估中使用的许多全球植被模型并不包括漫射光施肥等重要过程的完整表示(见图1; Mercado等人,2009; Rap等人,2018年)。因此,目前需要一个“预算不平衡”的术语来关闭碳预算等式。这种碳收支不平衡的大的可变性被认为是由陆地碳汇中的误差引起的(Friedlingstein等人,2022年)。该项目的首要目标是提高我们对气溶胶颗粒如何影响陆地碳汇的了解。特别是,该项目将调查由于温度、降水和扩散辐射在半十年时间尺度上的变化而对陆地碳汇产生的竞争性影响的作用。该方法将涉及遥感分析(例如全球生态系统动态调查- GEDI(汉考克等人,2019年);云和地球辐射能量系统(CERES)和模型模拟(即气溶胶、辐射和植被模型,以及英国地球系统模型- UKESM模拟)。在多元化的监督团队中,我们能够以比以往更全面的方式观察和模拟生物圈-大气相互作用。因此,该项目将提供一个独特的机会,利用最先进的卫星观测和全球模型来回答一系列关键问题。虽然相对灵活,以满足您的兴趣,该项目将涉及:-使用遥感产品(例如GEDI,ICESat-2,NISAR)对全球森林结构和地上生物量密度进行全面评估。使用卫星观测来约束模拟的半十年净初级生产力趋势,包括通过先进的计算机技术(例如偏差校正和数据驱动算法)。探索人为气溶胶和其他污染物(如臭氧)对UKESM模拟生态系统反馈效率的作用。研究温度、降水和大气CO2变化对UKESM模式中生物圈-大气相互作用的影响。
项目成果
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其他文献
吉治仁志 他: "トランスジェニックマウスによるTIMP-1の線維化促進機序"最新医学. 55. 1781-1787 (2000)
Hitoshi Yoshiji 等:“转基因小鼠中 TIMP-1 的促纤维化机制”现代医学 55. 1781-1787 (2000)。
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LiDAR Implementations for Autonomous Vehicle Applications
- DOI:
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2021 - 期刊:
- 影响因子:0
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吉治仁志 他: "イラスト医学&サイエンスシリーズ血管の分子医学"羊土社(渋谷正史編). 125 (2000)
Hitoshi Yoshiji 等人:“血管医学与科学系列分子医学图解”Yodosha(涉谷正志编辑)125(2000)。
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Effect of manidipine hydrochloride,a calcium antagonist,on isoproterenol-induced left ventricular hypertrophy: "Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,K.,Teragaki,M.,Iwao,H.and Yoshikawa,J." Jpn Circ J. 62(1). 47-52 (1998)
钙拮抗剂盐酸马尼地平对异丙肾上腺素引起的左心室肥厚的影响:“Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,
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