Arid
DOI10.1002/joc.7396
Seasonal simulations of summer aerosol optical depth over the Arabian Peninsula using WRF-Chem: Validation, climatology, and variability
Karumuri, Rama Krishna; Kunchala, Ravi Kumar; Attada, Raju; Dasari, Hari Prasad; Hoteit, Ibrahim
Corresponding AuthorHoteit, I (corresponding author), King Abdullah Univ Sci & Technol KAUST, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia.
JournalINTERNATIONAL JOURNAL OF CLIMATOLOGY
ISSN0899-8418
EISSN1097-0088
Year Published2021-10
Abstract in EnglishThis study investigates the climatology and variability of summer aerosol optical depth (AOD) over the Arabian Peninsula (AP) using a long-term high-resolution Weather Research and Forecasting model coupled with the chemistry module (WRF-Chem) simulation, available ground-based and satellite observations, and reanalysis products from 2008 to 2018. The simulated spatial distribution of the summer AOD agrees well with the satellite observations and reanalysis over the AP, with spatial correlation coefficients of 0.81/0.83/0.89 with MODIS-A/MODIS-T/MERRA-2, respectively. Higher values of summertime AOD are broadly found over the eastern AP regions and the southern Red Sea and minima over the northern Red Sea and northwest AP, consistent with observational datasets. The WRF-Chem simulation suggests that the two regions of high AOD are associated with dust advected from the Tigris-Euphrates by the northwesterly summer Shamal wind in the eastern AP and from the African Sahara via Sudan by westerly winds through the Tokar Gap for the southern AP. The high AOD over the south-central east AP is due to locally generated dust by the action of northerly winds, modulated by variations in relative humidity, vertical motion, soil moisture, and soil temperature over the desert regions. The vertical extent of this dust is primarily driven by upward motion triggered by thermal convection over the local source region. In terms of interannual variability, summer AOD exhibits significant year-to-year variations over the AP region. In particular, enhanced (reduced) AOD over the southern AP (Persian Gulf) is observed during La Nina conditions, favoured by stronger (weaker) Tokar westerly (northwesterly summer Shamal) winds.
Keyword in Englishaerosol optical depth (AOD) Arabian Peninsula MODIS WRF-Chem
SubtypeArticle ; Early Access
Language英语
Indexed BySCI-E
WOS IDWOS:000703895300001
WOS KeywordDUST EMISSION ; AIR-QUALITY ; GLOBAL DISTRIBUTION ; PARTICULATE MATTER ; DRY DEPOSITION ; MINERAL DUST ; AFRICAN DUST ; MODEL ; IMPACT ; OZONE
WOS SubjectMeteorology & Atmospheric Sciences
WOS Research AreaMeteorology & Atmospheric Sciences
Document Type期刊论文
Identifierhttp://119.78.100.177/qdio/handle/2XILL650/363627
Affiliation[Karumuri, Rama Krishna; Dasari, Hari Prasad; Hoteit, Ibrahim] King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal, Saudi Arabia; [Kunchala, Ravi Kumar] Indian Inst Technol Delhi, Ctr Atmospher Sci, New Delhi, India; [Attada, Raju] Indian Inst Sci Educ & Res Mohali, Dept Earth & Environm Sci, Mohali, India
Recommended Citation
GB/T 7714
Karumuri, Rama Krishna,Kunchala, Ravi Kumar,Attada, Raju,et al. Seasonal simulations of summer aerosol optical depth over the Arabian Peninsula using WRF-Chem: Validation, climatology, and variability[J],2021.
APA Karumuri, Rama Krishna,Kunchala, Ravi Kumar,Attada, Raju,Dasari, Hari Prasad,&Hoteit, Ibrahim.(2021).Seasonal simulations of summer aerosol optical depth over the Arabian Peninsula using WRF-Chem: Validation, climatology, and variability.INTERNATIONAL JOURNAL OF CLIMATOLOGY.
MLA Karumuri, Rama Krishna,et al."Seasonal simulations of summer aerosol optical depth over the Arabian Peninsula using WRF-Chem: Validation, climatology, and variability".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2021).
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