Integrated analysis of regime shift of Asian PM2.5 pollution
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- UNO Itsushi
- Principal Investigator
- 九州大学
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- 板橋 秀一
- Co-Investigator
- 一般財団法人電力中央研究所
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- 弓本 桂也
- Co-Investigator
- 九州大学
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- 王 哲
- Co-Investigator
- 九州大学
About this project
- Japan Grant Number
- JP18H03359
- Funding Program
- Grants-in-Aid for Scientific Research
- Funding organization
- Japan Society for the Promotion of Science
- Project/Area Number
- 18H03359
- Research Category
- Grant-in-Aid for Scientific Research (B)
- Allocation Type
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- Single-year Grants
- Review Section / Research Field
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- Basic Section 63010:Environmental dynamic analysis-related
- Research Institution
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- Kyushu University
- Project Period (FY)
- 2018-04-01 〜 2022-03-31
- Project Status
- Completed
- Budget Amount*help
- 17,290,000 Yen (Direct Cost: 13,300,000 Yen Indirect Cost: 3,990,000 Yen)
Research Abstract
Changes in the composition of aerosol chemical components resulting from changes in emissions in China from 2012 to 2021 are summarized. (1) The impact of environmental improvements in China was quantitatively evaluated and source-receptor analysis using a chemical transport model revealed that PM2.5 concentrations in downwind areas were improved. However, the difference in SO2 and NOx reduction rates was due to a chemical imbalance in the ammonia-nitrate-sulfate-water system, which resulted in more nitrate generation. Observations and numerical modeling on a clean remote island in western Japan confirmed that the major component in PM2.5 is changing from sulfate to nitrate (paradigm shift); the effect of lockdown associated with the spread of COVID-19 was also added to the study.
Keywords
Details 詳細情報について
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- CRID
- 1040000781993795712
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- Text Lang
- ja
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- Data Source
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- KAKEN