Development of visibility equation based on fog microphysical observations and its verification using the WRF model

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dc.authoridİsmail Gültepe / 0000-0002-8433-5953
dc.authorscopusidİsmail Gültepe / 56000281400
dc.authorwosidİsmail Gültepe / CSK-8095-2022en_US
dc.contributor.authorWagh, Sandeep
dc.contributor.authorKulkarni, Rachana
dc.contributor.authorLonkar, Prasanna
dc.contributor.authorParde, Avinash N.
dc.contributor.authorDhangar, Narendra G.
dc.contributor.authorGovardhan, Gaurav
dc.contributor.authorSajjan, Veeresh
dc.contributor.authorDebnath, Sreyashi
dc.contributor.authorGültepe, İsmail
dc.date.accessioned2022-09-07T11:09:22Z
dc.date.available2022-09-07T11:09:22Z
dc.date.issued2022en_US
dc.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, İnşaat Mühendisliği Bölümüen_US
dc.description.abstractThe campaign mode observational program 'Winter Fog Experiment' (WiFEX) was set up at the Indira Gandhi International Airport (IGIA), New Delhi, during the winter months of 2016-17 and 2017-18. Using the WiFEX data, in this study, we examine the microphysical structure of fog formed in a polluted environment and attempt to predict visibility (V-is) using the fog index approach. The examination of eleven fog events demonstrates that the mean droplet concentration (up to 674.94 #/cm(-3)) and liquid water content (LWC, up to 0.29 g m(-3)) are high in dense fog cases (V-is < 200 m). The droplet spectrum shows bi-modal distribution and dominance of smaller droplets in the 3-7 mu m range. For most fog cases, the droplet spectrum extends up to 50 mu m. The mature phase of the fog depicts a relatively increased population of droplets in the higher-sized bins, highlighting the formation of larger droplets. Moreover, we found that V-is is inversely related to the liquid water content and the fog droplet number concentration. Fog index-based visibility parameterization has been developed to diagnostically compute visibility for the different categories of fog events, namely category-IIIB (CAT-IIIB) and category-IIIC (CAT-IIIC), using the meteorological variables. Out of 14 CAT-IIIB and 19 CAT-IIIC fog events, the 'WiFEX-in' could predict seven CAT-IIIB and 12 CAT-IIIC fog events, respectively. However, significant under-prediction was evident for the total CAT-IIIB fog hours and over-prediction for the total CAT-IIIC fog hours. It is found that the observed and predicted fog hour differences were related to the errors in the fog onset, dissipation, and magnitude of predicted liquid water content during CAT-IIIB and CAT-IIIC events and the same are discussed.en_US
dc.identifier.citationWagh, S., Kulkarni, R., Lonkar, P., Parde, A. N., Dhangar, N. G., Govardhan, G., Sajjan, V., Debnath, S., Gultepe, I. (2022). Development of visibility equation based on fog microphysical observations and its verification using the WRF model. Modeling Systems and Environment.en_US
dc.identifier.doi10.1007/s40808-022-01492-6en_US
dc.identifier.issn2363-6203en_US
dc.identifier.scopus2-s2.0-85136204844en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1007/s40808-022-01492-6
dc.identifier.urihttps://hdl.handle.net/20.500.12713/3124
dc.identifier.wosWOS:000843086400002en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorGültepe, İsmail
dc.language.isoenen_US
dc.publisherSPRINGER HEIDELBERGen_US
dc.relation.ispartofMODELING EARTH SYSTEMS AND ENVIRONMENTen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFogen_US
dc.subjectFog Microphysicsen_US
dc.subjectLWCen_US
dc.subjectVisibilityen_US
dc.subjectWRFen_US
dc.subjectWiFEXen_US
dc.titleDevelopment of visibility equation based on fog microphysical observations and its verification using the WRF modelen_US
dc.typeArticleen_US

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