Soil dust aerosol in the atmosphere: sources, quantities, properties (overview)

Q4 Agricultural and Biological Sciences Biulleten'' Pochvennogo instituta im VV Dokuchaeva Pub Date : 2021-12-25 DOI:10.19047/0136-1694-2021-109-36-95
A. Romanovskaya, I. Savin
{"title":"Soil dust aerosol in the atmosphere: sources, quantities, properties (overview)","authors":"A. Romanovskaya, I. Savin","doi":"10.19047/0136-1694-2021-109-36-95","DOIUrl":null,"url":null,"abstract":"Dust is a major component of atmospheric aerosols – 75% of the global aerosol load. Natural and anthropogenic sources are listed, as well as dust research methods. According to different estimates, the average mineral dust load in the atmosphere ranges from 20 to 33 Tg, and the annual dust emission is 1 200–5 900 Tg/year. Reports from the Intergovernmental Panel on Climate Change (IPCC) inform about the total direct radiative forcing of dust ranging from -0.56 to +0.1 W/m2, with little scientific understanding of the processes leading to this result. The particle size, including soil aerosol, is divided into fine (<5 μm), medium (5–10(20) μm) and coarse (>20 μm) dust. Fine dust cools the global climate due to dispersion of solar radiation, while coarse dust (greater than 5 μm) warms the climate by absorbing solar and thermal radiation. However, the coarse dust (above 20 μm) remains poorly investigated, with very little data on its content and emission. Recent studies suggest that coarse dust (17 Tg), missed by the global models, contributes on average 0.15 W/m2 (0.10 to 0.24 W/m2) to atmospheric heating and also affects the global distribution of clouds and precipitation. In addition, soil dust is characterised by a complex and diverse particle shape and structure, heterogeneous mineralogical and chemical composition; due to its dispersion ability and large surface area dust reacts with other types of aerosols, resulting in the formation of different films on the particle surface or internal mixing. All this significantly changes the optical properties of mineral dust and complicates the development of models for its investigation.","PeriodicalId":52755,"journal":{"name":"Biulleten'' Pochvennogo instituta im VV Dokuchaeva","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biulleten'' Pochvennogo instituta im VV Dokuchaeva","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.19047/0136-1694-2021-109-36-95","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Agricultural and Biological Sciences","Score":null,"Total":0}
引用次数: 2

Abstract

Dust is a major component of atmospheric aerosols – 75% of the global aerosol load. Natural and anthropogenic sources are listed, as well as dust research methods. According to different estimates, the average mineral dust load in the atmosphere ranges from 20 to 33 Tg, and the annual dust emission is 1 200–5 900 Tg/year. Reports from the Intergovernmental Panel on Climate Change (IPCC) inform about the total direct radiative forcing of dust ranging from -0.56 to +0.1 W/m2, with little scientific understanding of the processes leading to this result. The particle size, including soil aerosol, is divided into fine (<5 μm), medium (5–10(20) μm) and coarse (>20 μm) dust. Fine dust cools the global climate due to dispersion of solar radiation, while coarse dust (greater than 5 μm) warms the climate by absorbing solar and thermal radiation. However, the coarse dust (above 20 μm) remains poorly investigated, with very little data on its content and emission. Recent studies suggest that coarse dust (17 Tg), missed by the global models, contributes on average 0.15 W/m2 (0.10 to 0.24 W/m2) to atmospheric heating and also affects the global distribution of clouds and precipitation. In addition, soil dust is characterised by a complex and diverse particle shape and structure, heterogeneous mineralogical and chemical composition; due to its dispersion ability and large surface area dust reacts with other types of aerosols, resulting in the formation of different films on the particle surface or internal mixing. All this significantly changes the optical properties of mineral dust and complicates the development of models for its investigation.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
大气中的土壤粉尘气溶胶:来源、数量、性质(综述)
灰尘是大气气溶胶的主要成分,占全球气溶胶负荷的75%。列出了自然和人为来源,以及灰尘研究方法。根据不同的估计,大气中的平均矿物粉尘负荷在20至33 Tg之间,年粉尘排放量为1200至5900 Tg/年。政府间气候变化专门委员会(IPCC)的报告介绍了灰尘的总直接辐射强迫,范围从-0.56到+0.1 W/m2,但对导致这一结果的过程几乎没有科学了解。颗粒大小,包括土壤气溶胶,分为细尘(20μm)。细尘由于太阳辐射的分散而使全球气候降温,而粗尘(大于5μm)通过吸收太阳和热辐射而使气候变暖。然而,对粗尘(20μm以上)的研究仍然很少,关于其含量和排放的数据很少。最近的研究表明,全球模型遗漏的粗尘(17 Tg)对大气加热的平均贡献为0.15 W/m2(0.10至0.24 W/m2),也影响云和降水的全球分布。此外,土壤粉尘的特点是颗粒形状和结构复杂多样,矿物和化学成分不均匀;由于其分散能力和较大的表面积,灰尘与其他类型的气溶胶发生反应,导致颗粒表面形成不同的薄膜或内部混合。所有这些都显著改变了矿尘的光学性质,并使其研究模型的开发变得复杂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
CiteScore
0.90
自引率
0.00%
发文量
15
审稿时长
8 weeks
期刊最新文献
Winemaking terroir – the guideline for choosing of grape rootstocks for soils with different characteristics Effect of organosilicon adsorbent on the content of mobile forms of heavy metals and growth of test-crop under conditions of soil contamination with lead and copper Soil cover transformation after the laying of a high-voltage power line Assessment of the barrier function of Chernozem and Luvisol under their experimental contamination by copper ions Taxonomic and functional characteristics of xerotolerant culturable bacterial community of Negev desert soil
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1