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Articles by Kebin He
Flash energy droughts in solar and wind resources under climate change
Abstract Flash energy droughts, characterized by sharp declines and prolonged periods of low wind and solar generation, may pose potential challenges to power system operation. Yet, a clear understanding remains lacking regarding the system implications and how climate change may intensify them. Here we find that flash energy droughts may be associated with higher unserved energy, flexibility requirements and electricity costs.
Black carbon emissions and climate impacts of cost-saving Arctic transit shipping through 2050
Abstract As climate change accelerates, emerging Arctic routes offer economic gains by shortening voyages but pose climate risks through black carbon deposition on snow and ice. Here we assess Arctic transit shipping at the global scale. Among 295 port pairs with reduced distance, only 249 achieve positive net economic benefits when accounting for fuel, transit, insurance, capital costs and turnover profits. By 2050, Arctic transit shipping could generate up to US$2.3 billion annually.
Unit-level assessment of mitigation pathways for mercury emissions from the global coal power fleet
Abstract Atmospheric mercury pollution remains a serious threat for human health and ecosystems, as recognized by the Minamata Convention on Mercury adopted in 2013. Coal-fired power units are major emitters of various environmental pollutants globally, including mercury.
Impacts of future land use and land cover changes on air quality in China
Abstract Land use and land cover changes (LULCCs) influence air quality via modifications in local meteorology and natural emissions, yet their future impacts and pathway contributions remain inadequately quantified. Here, we employed an online coupled meteorology–chemistry model to assess the effects of LULCCs by the mid-21st century on O3 and PM2.5 in China, and to disentangle the roles of meteorological influences versus biogenic volatile organic compound (BVOC) emission changes.
Global mapping of disaggregated international trade-linked transportation CO 2 emissions
Abstract A comprehensive understanding of international trade-linked transportation CO2 emissions is essential for achieving net-zero emission goals. However, the current simplified representation of transportation patterns obscures the heterogeneity of these CO2 emissions in international trade and limits the development of targeted decarbonization policies.
Air quality improvement masks global cooling from CO2 reductions under China’s carbon neutrality policies for half a century - Nature Communications
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Abstract Achieving carbon neutrality and improving air quality are pivotal sustainability strategies for the Global South countries. However, their global climate impacts over a realistic timescale remain unclear. Here we evaluate the climate impacts of China’s carbon neutrality and Beautiful China policies using a fully coupled Earth system model and updated future anthropogenic emission scenarios.
By Bin Zhao, Yuan Wang, YiSheng Sun, Yang Gao Verified, Yuqiang Zhang, Drew T. Shindell, Steven J. Davis, Yuhan Wang, Zhe Jiang, Kebin He
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Nature
Verified
Addressing critical challenges towards a robust data system for life cycle assessment - Nature Reviews Clean Technology
Abstract Life cycle assessment (LCA) is a method that evaluates the environmental impact of products, technologies or services across their life cycles. LCA data record the inputs and outputs of products and processes over their lifespan. However, owing to inconsistent methodologies and limited compatibility across tools and formats, LCA data face challenges related to quality and interoperability. In this Review, we discuss approaches for LCA data harmonization.
Control of toxicity of fine particulate matter emissions in China - Nature
Abstract Fine particulate matter (particulate matter with a diameter of 2.5 μm or less; PM2.5) causes millions of premature deaths globally1, but not all particles are equally harmful2,3,4. Current air-pollution control strategies, prioritizing PM2.5 mass reduction, have provided considerable health benefits but further refinements based on differences in the toxicity of various emission sources may provide greater benefits5,6,7.
Strategies for climate-resilient global wind and solar power systems - Nature
Abstract Climate change may amplify the frequency and severity of supply-demand mismatches in future power systems with high shares of wind and solar energy1,2. Here, we use a dispatch optimization model to assess potential increases in hourly costs associated with such climate-intensified gaps under fixed, high penetrations of wind and solar generation. We further explore various strategies to enhance system resilience in the face of future climate change.
Enhanced CH4 emissions from global wildfires likely due to undetected small fires - Nature Communications
Abstract Monitoring methane (CH4) emissions from terrestrial ecosystems is essential for assessing the relative contributions of natural and anthropogenic factors leading to climate change and shaping global climate goals. Fires are a significant source of atmospheric CH4, with the increasing frequency of megafires amplifying their impact. Global fire emissions exhibit large spatiotemporal variations, making the magnitude and dynamics difficult to characterize accurately.
Efficacy of China’s clean air actions to tackle PM2.5 pollution between 2013 and 2020 - Nature Geoscience
Abstract Beginning in 2013, China launched two phases (2013–2017 and 2018–2020) of clean air actions that have led to substantial reductions in PM2.5 concentrations. However, improvement in PM2.5 pollution was notably slowing down during Phase II. Here we quantify the efficacy and drivers of PM2.5 improvement and evaluate the associated cost during 2013–2020 using an integrated framework that combines an emission inventory model, a chemical transport model and detailed cost information.
Cost-effectiveness uncertainty may bias the decision of coal power transitions in China - Nature Communications
Abstract A transition away from coal power always maintains a high level of complexity as there are several overlapping considerations such as technical feasibility, economic costs, and environmental and health impacts. Here, we explore the cost-effectiveness uncertainty brought by policy implementation disturbances of different coal power phaseout and new-built strategies (i.e., the disruption of phaseout priority) in China based on a developed unit-level uncertainty assessment framework.
Deploying solar photovoltaic energy first in carbon-intensive regions brings gigatons more carbon mitigations to 2060 - Communications Earth & Environment
Abstract The global surge in solar photovoltaic (PV) power has featured spatial specialization from manufacturing to installation along its industrial chain. Yet how to improve PV climate benefits are under-investigated. Here we explore the evolution of net greenhouse gas (GHG) mitigation of PV industry from 2009–2060 with a spatialized-dynamic life-cycle-analysis.
Plant-by-plant decarbonization strategies for the global steel industry - Nature Climate Change
Abstract The critical role of the iron and steel industry in decarbonizing global energy systems calls for refined strategies of climate mitigation. Here, based on a newly developed database of individual iron and steel facilities worldwide, we explore the distinct differences in age-to-capacity ratio and emissions intensity of primary steelmaking plants. We customize regional cost-effective decarbonization strategies by targeting a certain proportion of plants.
Air quality in megacities Faraday Discussion
17 - 20 November 2020, Online, United Kingdom Book now Online event The Royal Society of Chemistry are pleased to announce that this event will be moving online. This web page will be updated over the coming weeks with more details. If you have any questions please contact us at events@rsc.org Introduction Join us online in November 2020 for this virtual addition to our Faraday Discussion series.
Simulation and synthesis of Fe3O4-Au satellite nanostructures for optimised surface-enhanced Raman scattering
Nanomaterials with well-definedstructures and optimised electromagnetic hot spots are crucial and highlydesirable in surface-enhanced Raman scattering (SERS), but remain challenging to fabricate. In response, theoretical and experimental studies were performed to optimise the parameters of Fe O -Au satellite nanostructures for achieving pronounced electric field enhancements.
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