High-resolution Simulation Dataset of Hourly PM_(2.5)Chemical Composition in China(CAQRA-aerosol)from 2013 to 2020  

作　　者：Lei KONG Xiao TANG Jiang ZHU Zifa WANG Bing LIU Yuanyuan ZHU Lili ZHU Duohong CHEN Ke HU Huangjian WU Qian WU Jin SHEN Yele SUN Zirui LIU Jinyuan XIN Dongsheng JI Mei ZHENG 

机构地区：[1]Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]China National Environmental Monitoring Centre,Beijing 100012,China [4]Guangdong Ecological Environment Monitoring Centre,Guangzhou 510308,China [5]Wuhan Environmental Monitoring Centre,Hubei 430015,China [6]Hubei Province Academy of Eco-environmental Sciences,Hubei 430072,China [7]Peking University,Beijing 100871,China

出　　处：《Advances in Atmospheric Sciences》2025年第4期697-712,共16页大气科学进展(英文版)

基　　金：support from the National Key Scientific and Technological Infrastructure project “Earth System Science Numerical Simulator Facility” (Earth Lab);sponsored by the National Natural Science Foundation of China (Grant Nos. 42175132, 92044303, and 42205119);the National Key R&D Program (Grant Nos. 2020YFA0607802 and 2022YFC3703003);the CAS Information Technology Program (Grant No. CAS-WX2021SF-0107-02);the fellowship of China Postdoctoral Science Foundation (Grant No. 2022M723093)

摘　　要：Scientific knowledge on the chemical compositions of fine particulate matter(PM_(2.5)) is essential for properly assessing its health and climate effects,and for decisionmakers to develop efficient mitigation strategies.A high-resolution PM_(2.5) chemical composition dataset(CAQRA-aerosol)is developed in this study,which provides hourly maps of organic carbon,black carbon,ammonium,nitrate,and sulfate in China from 2013 to 2020 with a horizontal resolution of 15 km.This paper describes the method,access,and validation results of this dataset.It shows that CAQRA-aerosol has good consistency with observations and achieves higher or comparable accuracy with previous PM_(2.5) composition datasets.Based on CAQRA-aerosol,spatiotemporal changes of different PM_(2.5) compositions were investigated from a national viewpoint,which emphasizes different changes of nitrate from other compositions.The estimated annual rate of population-weighted concentrations of nitrate is 0.23μg m^(−3)yr^(−1) from 2015 to 2020,compared with−0.19 to−1.1μg m^(−3)yr^(−1) for other compositions.The whole dataset is freely available from the China Air Pollution Data Center(https://doi.org/10.12423/capdb_PKU.2023.DA).

关 键 词：PM_(2.5)composition dataset black carbon organic carbon AMMONIUM NITRATE SULFATE 

分 类 号：X513[环境科学与工程—环境工程] P402[天文地球—大气物理学与大气环境]