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| DOI | 10.1016/j.atmosenv.2024.120499 |
| Effects of emission reductions on major anthropogenic aerosol-radiation-cloud interactions in East Asia in winter during 2007-2020 | |
| 发表日期 | 2024 |
| ISSN | 1352-2310 |
| EISSN | 1873-2844 |
| 起始页码 | 327 |
| 卷号 | 327 |
| 英文摘要 | East Asia (EA) has always been a highly concern region for human-induced climate change. In this study, a welldeveloped regional model RegCM4 is employed to investigate the influences of major anthropogenic aerosol (MAA, including sulfate and primary carbonaceous aerosols) variations from 2007 to 2020 on East Asian climates in winter. Results indicate that high MAA loadings in EA in winter mainly appear in Central to Eastern China. In most area of Asia (5 degrees-55 degrees N, 70 degrees-140 degrees E), the multi-year (2007-2020) mean instantaneous direct and total effective radiative forcing (IDRF and ERF) induced by MAAs are -4.22 and -3.90 W & sdot;m- 2 at the surface in winter, which are 2.29 and 1.96 times of those at the tropopause. In polluted area from southwest to center China (SWCC, 27-33 degrees N, 102-115 degrees E), these forcings are much stronger, which causes a dimmer, cooler and drier surface and further stabilizes the lower atmosphere. The multi-year mean sunshine duration, surface air temperature, precipitation, and boundary layer thickness are changed by -20.32 min & sdot;d- 1, -0.33 K, -0.08 mm & sdot;d- 1, and -12.51 m, respectively in SWCC in winter. Both the aerosol surface IDRF and ERF are weakened by above 30% in SWCC in winter since the Action Plan for Air Pollution Prevention and Control was carried out, which results in less surface dimming and cooling by 9.4 min & sdot;d- 1 and 0.23 K, respectively. During the most outbreak period in COVID-19 epidemic, the aerosol surface IDRF is weakened by approximately 46.87% compared to that before 2013 in SWCC, which may offset the aerosol cooling effect by 0.28 K. |
| 英文关键词 | Aerosols; Radiative forcing; Climate effects; RegCM4; East Asia; COVID-19 |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001237182500001 |
| 来源期刊 | ATMOSPHERIC ENVIRONMENT
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/301734 |
| 作者单位 | Nanjing University; Nanjing Normal University |
| 推荐引用方式 GB/T 7714 | . Effects of emission reductions on major anthropogenic aerosol-radiation-cloud interactions in East Asia in winter during 2007-2020[J],2024,327. |
| APA | (2024).Effects of emission reductions on major anthropogenic aerosol-radiation-cloud interactions in East Asia in winter during 2007-2020.ATMOSPHERIC ENVIRONMENT,327. |
| MLA | "Effects of emission reductions on major anthropogenic aerosol-radiation-cloud interactions in East Asia in winter during 2007-2020".ATMOSPHERIC ENVIRONMENT 327(2024). |
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