【摘 要】
：
New challenges are emerging in fine-scale air quality modeling in China due to a lack of high-resolution emission maps.Currently,only a few emission sources hav
【机 构】
：
Institute of Environment and Ecology,Tsinghua Shenzhen International Graduate School,Tsinghua Univer
论文部分内容阅读
New challenges are emerging in fine-scale air quality modeling in China due to a lack of high-resolution emission maps.Currently,only a few emission sources have accurate geographic locations(point sources),while a large part of sources,including industrial plants,are estimated as provincial totals(area sources)and spatially disaggregated onto grid cells based on proxies;this approach is reasonable to some extent but is highly questionable at fine spatial resolutions.Here,we compile a new comprehensive point source database that includes nearly 100,000 industrial facilities in China.We couple it with the frame of Multi-resolution Emission Inventory for China(MEIC),estimate point source emissions,combine point and area sources,and finally map China's anthropogenic emissions of 2013 at the spatial resolution of 30“x30”(～1 km).Consequently,the percentages of point source emissions in the total emissions increase from less than 30％in the MEIC up to a maximum of 84％for SO2 in 2013.The new point source-based emission maps show the uncoupled distribution of emissions and populations in space at fine spatial scales,however,such a pattern cannot be reproduced by any spatial proxy used in the conventional emis-sions mapping.This new accurate high-resolution emission mapping approach reduces the modeled biases of air pollutant concentrations in the densely populated areas compared to the raw MEIC inven-tory,thus improving the assessment of population exposure.
其他文献
The constantly increasing global energy demand and related environmental issues urgently motivate the pursuit of renewable and eco-friendly energy sources [1].A
Synthesis gas (syngas), a fundamental feedstock in chemical industry, is a mixture of hydrogen (H2) and carbon monoxide (CO).Transition metal-catalyzed hydrofor
Many conventional chemotherapeutics play an immune-modulating effect by inducing immunogenic cell death (ICD) in tumor cells.However,they hardly arouse strong a
Carbon dots (CDs) are potentially useful in many areas such as bioimaging,light-emitting diodes,and sensing because of their excellent optical properties,high b
Over the years,the efficiency of inorganic perovskite solar cells (PSCs) has increased at an unprecedented pace.However,energy loss in the device has limited a
Previous studies reported a significant overestimation of the Sentinel-5 Precursor (S-5P) official operational SO2 product in global SO2 emissions [1,2].As such
Thermally activated delayed fluorescence (TADF) sensitized fluorescent organic light-emitting diodes (TSF-OLEDs) have shown great potential for the realization
Conductive adhesives (CAs) providing reliable connections between electronic components, have been widely used in solar cells [1], light emitting diodes (LEDs)
The application of traditional Chinese medicine (TCM) has made great contributions to the fight against the epidemic of coronavirus disease-2019 (COVID-19).Desp
Gestational exposure to PM2.5 is associated with adverse postnatal outcomes.PM2.5 can enter alveoli by using intratracheal instillation,even penetrate through l