干旱区生态环境知识资源中心(Arid): The effect of local pollution and transport dust on near surface aerosol properties over a semi-arid station from ground and satellite observations

Arid

DOI	10.1007/s11869-023-01462-6
	The effect of local pollution and transport dust on near surface aerosol properties over a semi-arid station from ground and satellite observations
	Akkiraju, Bhavyasree; Tandule, Chakradhar Rao; Gugamsetty, Balakrishnaiah; Kalluri, Raja Obul Reddy; Thotli, Lokeswara Reddy; Kotalo, Rama Gopal; Lingala, Siva Sankara Reddy
通讯作者	Kotalo, RG
来源期刊	AIR QUALITY ATMOSPHERE AND HEALTH
ISSN	1873-9318
EISSN	1873-9326
出版年	2024
卷号	17 期号:3 页码:541-558
英文摘要	Mineral dust, originating in arid regions, exerts substantial influence on air quality, health, and climate, ranking it among the most impactful aerosols. Its capacity to travel over great distances can significantly impact local air quality. In our study conducted for the year 2021, we made use of unprecedented, simultaneous in situ measurements to assess the total number, mass concentrations, and size distribution of near-surface aerosols at a semi-arid station. Furthermore, we conducted an in-depth examination of dust episodes, drawing upon evidence from in situ measurements of surface aerosol properties and meteorological records. The highest total number concentrations (230.1 +/- 60.61 cm(-3)) were recorded during the winter season, attributed to a combination of factors including low temperatures, high relative humidity, stable wind conditions, and limited dispersion. Our findings reveal a noteworthy correlation: for every 1% increase in the equivalent black carbon mass fraction, the diurnal temperature range rises by 1.73 degrees C, with a noticeable impact of the weekend effect. During the dust episodes occurring on April 7-10 and June 16-30, we observed a significant increase (> twofold) in various surface parameters, such as number size distribution (NSD), total and coarse mode mass concentrations, effective radius, and scattering coefficient. Particularly striking was the enhancement in NSD during these dust episodes, consistently exceeding twofold for aerosols larger than 1.0 mu m and reaching as high as tenfold for aerosols larger than 5.0 mu m. In addition to our surface observations, satellite vertical profiles showed a prominent dust elevated layer situated between 2 and 4 km altitude during the dust episodes. These observations were well-aligned with in situ surface data and dust columnar mass flux obtained from re-analysis data. Re-analysis and model data further support our findings, indicating a long-range transport of aerosols from the Middle East and South Asia during the dust episodes.
英文关键词	Number concentration Dust aerosols BC mass fraction Diurnal temperature range
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001101940500001
WOS关键词	BLACK CARBON AEROSOLS ; ATMOSPHERIC AEROSOLS ; MASS CONCENTRATIONS ; SIZE DISTRIBUTIONS ; SEASONAL-VARIATION ; OPTICAL-PROPERTIES ; TROPICAL URBAN ; INDIAN REGION ; ARABIAN SEA ; ANANTAPUR
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402807
推荐引用方式 GB/T 7714	Akkiraju, Bhavyasree,Tandule, Chakradhar Rao,Gugamsetty, Balakrishnaiah,et al. The effect of local pollution and transport dust on near surface aerosol properties over a semi-arid station from ground and satellite observations[J],2024,17(3):541-558.
APA	Akkiraju, Bhavyasree.,Tandule, Chakradhar Rao.,Gugamsetty, Balakrishnaiah.,Kalluri, Raja Obul Reddy.,Thotli, Lokeswara Reddy.,...&Lingala, Siva Sankara Reddy.(2024).The effect of local pollution and transport dust on near surface aerosol properties over a semi-arid station from ground and satellite observations.AIR QUALITY ATMOSPHERE AND HEALTH,17(3),541-558.
MLA	Akkiraju, Bhavyasree,et al."The effect of local pollution and transport dust on near surface aerosol properties over a semi-arid station from ground and satellite observations".AIR QUALITY ATMOSPHERE AND HEALTH 17.3(2024):541-558.