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dc.contributor.authorShukla, G.
dc.contributor.authorSudheer, A.K.
dc.contributor.authorGunthe, S.S.
dc.contributor.authorBeig, G.
dc.contributor.authorKumar, Ashwini
dc.date.accessioned2023-02-28
dc.date.accessioned2023-03-01T09:15:22Z
dc.date.available2023-01-28
dc.date.available2023-03-01T09:15:22Z
dc.date.issued2023
dc.identifier.citationAtmosphere, vol.14(2); 2023; Article no: 259
dc.identifier.issn2073-4433
dc.identifier.otherhttps://www.mdpi.com/2073-4433/14/2/259
dc.identifier.urihttps://doi.org/10.3390/ATMOS14020259
dc.identifier.urihttps://drs.nio.org/drs/handle/2264/8914
dc.description3.110
dc.description.abstractThe acidity of atmospheric particles can promote specific chemical processes that result in the production of extra condensed phases from lesser volatile species (secondary fine particulate matter), change the optical and water absorption characteristics of particles, and enhance trace metal solubility that can function as essential nutrients in nutrient-limited environments.In this study, we present an estimated pH of fine particulate matter (FPM) through a thermodynamic model and assess its temporal variability over a coastal location in the northeast Arabian Sea.Here, we have used the chemical composition of FPM (PM2.5) collected during the period between 2017-2019.Chemical composition data showed large variability in water-soluble ionic concentrations (WSIC; range: 2.3-39.9 �g m-3) with higher and lower average values during the winter and summer months, respectively.SO42- ions were predominant among anions, while NH4+ was a major contributor among cations throughout the season.The estimated pH of FPM from the forward and reverse modes exhibits a moderate correlation for winter and summer samples.The estimated pH of FPM is largely regulated by SO42- content and strongly depends on the relative ambient humidity, particularly in the forward mode.Major sources of FPM assessed based on Positive matrix factorization (PMF) and air-mass back trajectory analyses demonstrate the dominance of natural sources (sea salt and dust) during summer months, anthropogenic sources in winter months and mixed sources during the post-monsoon season
dc.languageen
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titleSeasonal Variability in Fine Particulate Matter Water Content and Estimated pH over a Coastal Region in the Northeast Arabian Sea
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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