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| 1 | Integrated H azards Analys is显示文摘 | Steven R.T rammel l Donald K.Lorenzo Brett J.Davis | | 0，，05： | 1 |
| 2 | Near-real-time global gridded daily CO_(2) emissions显示文摘Precise and high-resolution carbon dioxide(CO_(2))emission data is of great importance in achieving carbon neutrality around the world.Here we present for the first time the near-real-time Global Gridded Daily CO_(2)Emissions Dataset(GRACED)from fossil fuel and cement production with a global spatial resolution of 0.1°by 0.1°and a temporal resolution of 1 day.Gridded fossil emissions are computed for different sectors based on the daily national CO_(2)emissions from near-real-time dataset(Carbon Monitor),the spatial patterns of point source emission dataset Global Energy Infrastructure Emissions Database(GID),Emission Database for Global Atmospheric Research(EDGAR),and spatiotemporal patters of satellite nitrogen dioxide(NO2)retrievals.Our study on the global CO_(2)emissions responds to the growing and urgent need for high-quality,fine-grained,near-real-time CO_(2)emissions estimates to support global emissions monitoring across various spatial scales.Weshow the spatial patterns of emission changes for power,industry,residential consumption,ground transportation,domestic and international aviation,and international shipping sectors from January 1,2019,to December 31,2020.This gives thorough insights into the relative contributions from each sector.Furthermore,it provides the most up-to-date and fine-grained overview of where and when fossil CO_(2)emissions have decreased and rebounded in response to emergencies(e.g.,coronavirus disease 2019[COVID-19])and other disturbances of human activities of any previously published dataset.As the world recovers from the pandemic and decarbonizes its energy systems,regular updates of this dataset will enable policymakers to more closely monitor the effectiveness of climate and energy policies and quickly adapt. | Xinyu Dou Yilong Wang Philippe Ciais Frédéric Chevallier Steven J.Davis Monica Crippa Greet Janssens-Maenhout Diego Guizzardi Efisio Solazzo Feifan Yan Da Huo Bo Zheng Biqing Zhu Duo Cui Piyu Ke Taochun Sun Hengqi Wang Qiang Zhang Pierre Gentine Zhu Deng Zhu Liu | 2022 | The Innovation2022，3，1： | 0 |
| 3 | The global mismatch between equitable carbon dioxide removal liability and capacity显示文摘Limiting climate change to 1.5℃and achieving net-zero emissions would entail substantial carbon dioxide removal(CDR)from the atmosphere by the mid-century,but how much CDR is needed at country level over time is unclear.The purpose of this paper is to provide a detailed description of when and how much CDR is required at country level in order to achieve 1.5℃and how much CDR countries can carry out domestically.We allocate global CDR pathways among 170 countries according to 6 equity principles and assess these allocations with respect to countries'biophysical and geophysical capacity to deploy CDR.Allocating global CDR to countries based on these principles suggests that CDR will,on average,represent~4%of nations'total emissions in 2030,rising to~17%in 2040.Moreover,equitable allocations of CDR,in many cases,exceed implied land and carbon storage capacities.We estimate~15%of countries(25)would have insufficient land to contribute an equitable share of global CDR,and~40%of countries(71)would have insufficient geological storage capacity.Unless more diverse CDR technologies are developed,the mismatch between CDR liabilities and land-based CDR capacities will lead to global demand for six GtCO_(2)carbon credits from 2020 to 2050.This demonstrates an imperative demand for international carbon trading of CDR. | Pu Yang Zhifu Mi Yi-Ming Wei Steef V.Hanssen Lan-Cui Liu D’Maris Coffman Xinlu Sun Hua Liao Yun-Fei Yao Jia-Ning Kang Peng-Tao Wang Steven J.Davis | 2023 | National Science Review2023，10，12： | 0 |
| 4 | 全球变暖导致易诱发臭氧污染的强地面太阳辐射频率增加显示文摘世界卫生组织2021年提出了新的臭氧标准,不仅加严了原有的短期暴露标准,还增加了暖季峰值的长期暴露指标.2019年秋季我国发生了大范围臭氧污染事件,特别是珠三角地区臭氧浓度异常增加最为突出,导致其暖季峰值超标,并且2019年长时间臭氧污染事件增幅更大.本文发现地面太阳辐射与臭氧年际变化相关性远高于其他气象因子,即使在温度较低时,较强的太阳辐射依然可促进高臭氧浓度累积.数值模式显示强太阳辐射驱动天然源大幅增加,不仅促进臭氧浓度升高,更重要的是,对于长时间臭氧污染事件频率增加大于短期污染事件,从而大大促进臭氧超标天数的增加.结合高分辨率地球系统模式和多模式比较计划,一致揭示在全球变暖下中国东部、美国东南部、欧洲各国,未来地面太阳辐射显著增加.通过将秋季地面太阳辐射日异常标准化,构建了臭氧气象指数,可有效揭示高臭氧浓度,阐明在北半球多个易发生臭氧污染区域,高臭氧气象指数天气发生频率显著增加,即利于高臭氧污染发生的气象条件在全球变暖下可能会更加频繁地发生. | 寇文彬 高阳 张绍晴 蔡文炬 耿冠楠 Steven J.Davis 王宏 郭修文 程文轩 曾欣然 马铭晨 王厚文 王俏巧 姚小红 高会旺 吴立新 | 2023 | Science Bulletin2023，68，4： | 0 |
| 5 | Global mitigation efforts cannot neglect emerging emitters显示文摘International efforts to avoid dangerous climate change have historically focused on reducing energy-related CO_(2)emissions from countries with either the largest economies(e.g.the EU and the USA)and/or the largest populations(e.g.China and India).However,in recent years,emissions have surged among a different and much less-examined group of countries,raising concerns that a next generation of high-emitting economies will obviate current mitigation targets.Here,we analyse the trends and drivers of emissions in each of the 59 countries where emissions in 2010-2018 grew faster than the global average(excluding China and India),project their emissions under a range of longer-term energy scenarios and estimate the costs of decarbonization pathways.Total emissions from these’emerging emitters’reach as much as 7.5 GtCO_(2)/year in the baseline 2.5°scenari—substantially greater than the emissions from these regions in previously published scenarios that would limit warming to 1.5℃or even 2℃.Such unanticipated emissions would in turn require non-emitting energy deployment from all sectors within these emerging emitters,and faster and deeper reductions in emissions from other countries to meet international climate goals.Moreover,the annual costs of keeping emissions at the low level are in many cases 0.2%-4.1%of countries’gross domestic production,pointing to potential trade-offs with poverty-reduction goals and/or the need for economic support and low-carbon technology transfer from historically high-emitting countries.Our results thus highlight the critical importance of ramping up mitigation efforts in countries that to this point have been largely ignored. | Can Cui Dabo Guan Daoping Wang Jing Meng Vicky Chemutai Paul Brenton Shaohui Zhang Yuli Shan Qiang Zhang Steven J.Davis | 2022 | National Science Review2022，9，12： | 0 |
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