干旱区生态环境知识资源中心(Arid): Temporal and spatial shifts in the chemical composition of urban coastal rainwaters of Kuwait: The role of air mass trajectory and meteorological variables

Arid

DOI	10.1016/j.scitotenv.2023.165649
	Temporal and spatial shifts in the chemical composition of urban coastal rainwaters of Kuwait: The role of air mass trajectory and meteorological variables
	Radha, S. V. V. Dhanu; Al-Rashidi, Amjad; Sabarathinam, Chidambaram; Alsabti, Bedour; Al-Wazzan, Yousef; Kumar, Umayadoss Saravana
通讯作者	Radha, SVVD
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2023
卷号	899
英文摘要	The rainwater chemistry encompasses the signatures of geogenic and anthropogenic processes along the regional air mass movement apart from the local sources. The predominance of dust events and anthropogenic emissions in arid regions facilitate new particle formation. Further, rain events of different seasons depict moisture sources from diverse regions reflecting variation in the regional geochemistry with respect to seasons. Hence, to characterize the geochemical composition of rainwater, the study has focused on an integrated approach by considering regional transport, meteorological components and possible local sources. A total of 74 rainwater samples were collected from 27 rain events in 2018, 2019, and 2022, representing urban coastal areas of Kuwait predominantly of Ca-SO4-HCO3 type. The average pH and electrical conductivity of the rainwater were 7.18 and 140 mu S/cm, respectively. The sea salt fractions calculated relative to Kuwait seawater ranged from 25.6 to >100 %, with higher values attributed to anthropogenic sources. Sea salt fraction, ion ratios, principal component analysis and factor scores revealed the terrestrial and anthropogenic sources apart from marine contributions. In addition, new particle formation and aerosols contributed to the rainwater chemistry involving SOx, NOx, and photochemical reactions during higher relative humidity and lesser wind speed. The HYSPLIT reflected that the moisture sources were largely from western regions of the study area, and those of December and January events had long-distance travel across the Azores high originating from northeast America. The trajectories of the November events are observed to originate from the Caspian/Black Sea region in the northeastern part of Kuwait with a relatively shorter distance of travel. The rainfall samples had higher ionic concentrations, and saturated with aragonite and calcite minerals in a few locations specifically after the dust events, while the subsequent rain events were less polluted.
英文关键词	Rainwater chemistry Saturation states Sources Air mass movement Meteorological factors
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001058092300001
WOS关键词	CLOUD CONDENSATION NUCLEI ; LONG-RANGE TRANSPORT ; SAHARAN DUST ; CARBON-MONOXIDE ; FORMATION MECHANISMS ; MOISTURE TRANSPORT ; SOUTH CHINA ; OKI ISLAND ; CHEMISTRY ; AEROSOL
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/2XILL650/398543
推荐引用方式 GB/T 7714	Radha, S. V. V. Dhanu,Al-Rashidi, Amjad,Sabarathinam, Chidambaram,et al. Temporal and spatial shifts in the chemical composition of urban coastal rainwaters of Kuwait: The role of air mass trajectory and meteorological variables[J],2023,899.
APA	Radha, S. V. V. Dhanu,Al-Rashidi, Amjad,Sabarathinam, Chidambaram,Alsabti, Bedour,Al-Wazzan, Yousef,&Kumar, Umayadoss Saravana.(2023).Temporal and spatial shifts in the chemical composition of urban coastal rainwaters of Kuwait: The role of air mass trajectory and meteorological variables.SCIENCE OF THE TOTAL ENVIRONMENT,899.
MLA	Radha, S. V. V. Dhanu,et al."Temporal and spatial shifts in the chemical composition of urban coastal rainwaters of Kuwait: The role of air mass trajectory and meteorological variables".SCIENCE OF THE TOTAL ENVIRONMENT 899(2023).