Open AccessModeling Transition Metals in East Asia and Japan and Its Emission Sources
Author(s) -
Kajino Mizuo,
Hagino Hiroyuki,
Fujitani Yuji,
Morikawa Tazuko,
Fukui Tetsuo,
Onishi Kazunari,
Okuda Tomoaki,
Kajikawa Tomoki,
Igarashi Yasuhito
Publication year - 2020
Publication title -
geohealth
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 12
ISSN - 2471-1403
DOI - 10.1029/2020gh000259
Subject(s) - emission inventory , particulates , environmental science , east asia , transition metal , aerosol , environmental chemistry , genetic algorithm , atmospheric sciences , environmental engineering , metallurgy , china , chemistry , meteorology , materials science , geography , geology , air quality index , catalysis , biochemistry , organic chemistry , archaeology , evolutionary biology , biology
Emission inventories of anthropogenic transition metals, which contribute to aerosol oxidative potential (OP), in Asia (Δ x = 0.25°, monthly, 2000–2008) and Japan (Δ x = 2 km, hourly, mainly 2012) were developed, based on bottom‐up inventories of particulate matters and metal profiles in a speciation database for particulate matters. The new inventories are named Transition Metal Inventory (TMI)‐Asia v1.0 and TMI‐Japan v1.0, respectively. It includes 10 transition metals in PM 2.5 and PM 10 , which contributed to OP based on reagent experiments, namely, Cu, Mn, Co, V, Ni, Pb, Fe, Zn, Cd, and Cr. The contributions of sectors in the transition metals emission in Japan were also investigated. Road brakes and iron‐steel industry are primary sources, followed by other metal industry, navigation, incineration, power plants, and railway. In order to validate the emission inventory, eight elements such as Cu, Mn, V, Ni, Pb, Fe, Zn, and Cr in anthropogenic dust and those in mineral dust were simulated over East Asia and Japan with Δ x = 30 km and Δ x = 5 km domains, respectively, and compared against the nation‐wide seasonal observations of PM 2.5 elements in Japan and the long‐term continuous observations of total suspended particles (TSPs) at Yonago, Japan in 2013. Most of the simulated elements generally agreed with the observations, while Cu and Pb were significantly overestimated. This is the first comprehensive study on the development and evaluation of emission inventory of OP active elements, but further improvement is needed.