{"title":"2025年1月23日至2025年1月24日加尔各答机场浓雾事件：天气学影响","authors":"Pravat Rabi Naskar, Gyan Prakash Singh","doi":"10.1007/s00024-025-03758-3","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, we have analyzed a dense fog episode over Kolkata airport that occurred during 23/01/2025 to 24/01/2025. We have utilized half-hourly meteorological data from the NSCBIA METAR, radio sounding data from the University of Wyoming, as well as upper air wind, specific humidity, mean sea level pressure, 10-m wind, and vertical integral of moisture flux divergence data from ERA5. Our findings indicate that the dense fog during these dates was strongly influenced by the prevailing anti-cyclonic circulation, which facilitated essential moisture advection from the Bay of Bengal to Gangetic West Bengal. Additionally, we have observed differences in the characteristics of the dense fog on the two dates based on the boundary layer characteristics and meteorological setup. The fog on January 23/01/2025, 00 UTC, has been classified as radiation + advection fog, meeting the necessary criteria, while the fog on 24/01/2025, 00 UTC, has been identified as cloud base lowering fog.</p></div>","PeriodicalId":21078,"journal":{"name":"pure and applied geophysics","volume":"182 8","pages":"3047 - 3066"},"PeriodicalIF":1.9000,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Dense Fog Episode Over Kolkata Airport During 23/01/2025 to 24/01/2025: The Synoptic Influence\",\"authors\":\"Pravat Rabi Naskar, Gyan Prakash Singh\",\"doi\":\"10.1007/s00024-025-03758-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this study, we have analyzed a dense fog episode over Kolkata airport that occurred during 23/01/2025 to 24/01/2025. We have utilized half-hourly meteorological data from the NSCBIA METAR, radio sounding data from the University of Wyoming, as well as upper air wind, specific humidity, mean sea level pressure, 10-m wind, and vertical integral of moisture flux divergence data from ERA5. Our findings indicate that the dense fog during these dates was strongly influenced by the prevailing anti-cyclonic circulation, which facilitated essential moisture advection from the Bay of Bengal to Gangetic West Bengal. Additionally, we have observed differences in the characteristics of the dense fog on the two dates based on the boundary layer characteristics and meteorological setup. The fog on January 23/01/2025, 00 UTC, has been classified as radiation + advection fog, meeting the necessary criteria, while the fog on 24/01/2025, 00 UTC, has been identified as cloud base lowering fog.</p></div>\",\"PeriodicalId\":21078,\"journal\":{\"name\":\"pure and applied geophysics\",\"volume\":\"182 8\",\"pages\":\"3047 - 3066\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2025-06-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"pure and applied geophysics\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00024-025-03758-3\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"GEOCHEMISTRY & GEOPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"pure and applied geophysics","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1007/s00024-025-03758-3","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
Dense Fog Episode Over Kolkata Airport During 23/01/2025 to 24/01/2025: The Synoptic Influence
In this study, we have analyzed a dense fog episode over Kolkata airport that occurred during 23/01/2025 to 24/01/2025. We have utilized half-hourly meteorological data from the NSCBIA METAR, radio sounding data from the University of Wyoming, as well as upper air wind, specific humidity, mean sea level pressure, 10-m wind, and vertical integral of moisture flux divergence data from ERA5. Our findings indicate that the dense fog during these dates was strongly influenced by the prevailing anti-cyclonic circulation, which facilitated essential moisture advection from the Bay of Bengal to Gangetic West Bengal. Additionally, we have observed differences in the characteristics of the dense fog on the two dates based on the boundary layer characteristics and meteorological setup. The fog on January 23/01/2025, 00 UTC, has been classified as radiation + advection fog, meeting the necessary criteria, while the fog on 24/01/2025, 00 UTC, has been identified as cloud base lowering fog.
期刊介绍：
pure and applied geophysics (pageoph), a continuation of the journal "Geofisica pura e applicata", publishes original scientific contributions in the fields of solid Earth, atmospheric and oceanic sciences. Regular and special issues feature thought-provoking reports on active areas of current research and state-of-the-art surveys.
Long running journal, founded in 1939 as Geofisica pura e applicata
Publishes peer-reviewed original scientific contributions and state-of-the-art surveys in solid earth and atmospheric sciences
Features thought-provoking reports on active areas of current research and is a major source for publications on tsunami research
Coverage extends to research topics in oceanic sciences
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