Long-Term (1951–2007) Rainfall Trends around Six Indian Cities: Current State, Meteorological, and Urban Dynamics
The present study focuses on analyzing the precipitation trends over six Indian cities during the summer monsoon (June–September) covering the period 1951–2007 and also attempting to investigate possible urban forcing and dynamics by examining the variation in precipitation in the upwind and downwin...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2013/572954 |
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| author | Shailesh Kumar Kharol D. G. Kaskaoutis Anu Rani Sharma Ramesh P. Singh |
| author_facet | Shailesh Kumar Kharol D. G. Kaskaoutis Anu Rani Sharma Ramesh P. Singh |
| author_sort | Shailesh Kumar Kharol |
| collection | DOAJ |
| description | The present study focuses on analyzing the precipitation trends over six Indian cities during the summer monsoon (June–September) covering the period 1951–2007 and also attempting to investigate possible urban forcing and dynamics by examining the variation in precipitation in the upwind and downwind directions. The analysis shows negative trends in the total number of rainy days over Hyderabad (−10.4%), Kanpur (−7.1%), Jaipur (−10.5%), and Nagpur (−4.8%) and positive trends over Delhi (7.4%) and Bangalore (22.9%). On the other hand, decreases of −21.3%, −5.9%, −14.2%, and −14.6% in seasonal rainfall are found over Delhi, Hyderabad, Jaipur, and Kanpur, respectively, whereas Bangalore and Nagpur show 65.8% and 13.5% increase. The lesser rainfall and rainy days, along with the mostly declining trend, in the downwind directions of the cities may imply an urban influence in precipitation associated with the increased anthropogenic emissions due to expansion of the urban areas and the increase of population. However, the large spatiotemporal variability of precipitation and the lack of statistical significance in the vast majority of the trends do not allow the extraction of safe conclusion concerning the aerosol-precipitation interactions around Indian cities. |
| format | Article |
| id | doaj-art-487eef09ea1c4a92bb43e8ec4077eb61 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-487eef09ea1c4a92bb43e8ec4077eb612025-02-03T01:22:32ZengWileyAdvances in Meteorology1687-93091687-93172013-01-01201310.1155/2013/572954572954Long-Term (1951–2007) Rainfall Trends around Six Indian Cities: Current State, Meteorological, and Urban DynamicsShailesh Kumar Kharol0D. G. Kaskaoutis1Anu Rani Sharma2Ramesh P. Singh3Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, B3H 3J5, CanadaDepartment of Physics, School of Natural Sciences, Shiv Nadar University, Dadri 203207, IndiaDepartment of Natural Resources, TERI University, Vasant Kunj, New Delhi 110 070, IndiaSchool of Earth and Environmental Sciences, Schmid College of Science and Technology, Chapman University, Orange, CA 92866, USAThe present study focuses on analyzing the precipitation trends over six Indian cities during the summer monsoon (June–September) covering the period 1951–2007 and also attempting to investigate possible urban forcing and dynamics by examining the variation in precipitation in the upwind and downwind directions. The analysis shows negative trends in the total number of rainy days over Hyderabad (−10.4%), Kanpur (−7.1%), Jaipur (−10.5%), and Nagpur (−4.8%) and positive trends over Delhi (7.4%) and Bangalore (22.9%). On the other hand, decreases of −21.3%, −5.9%, −14.2%, and −14.6% in seasonal rainfall are found over Delhi, Hyderabad, Jaipur, and Kanpur, respectively, whereas Bangalore and Nagpur show 65.8% and 13.5% increase. The lesser rainfall and rainy days, along with the mostly declining trend, in the downwind directions of the cities may imply an urban influence in precipitation associated with the increased anthropogenic emissions due to expansion of the urban areas and the increase of population. However, the large spatiotemporal variability of precipitation and the lack of statistical significance in the vast majority of the trends do not allow the extraction of safe conclusion concerning the aerosol-precipitation interactions around Indian cities.http://dx.doi.org/10.1155/2013/572954 |
| spellingShingle | Shailesh Kumar Kharol D. G. Kaskaoutis Anu Rani Sharma Ramesh P. Singh Long-Term (1951–2007) Rainfall Trends around Six Indian Cities: Current State, Meteorological, and Urban Dynamics Advances in Meteorology |
| title | Long-Term (1951–2007) Rainfall Trends around Six Indian Cities: Current State, Meteorological, and Urban Dynamics |
| title_full | Long-Term (1951–2007) Rainfall Trends around Six Indian Cities: Current State, Meteorological, and Urban Dynamics |
| title_fullStr | Long-Term (1951–2007) Rainfall Trends around Six Indian Cities: Current State, Meteorological, and Urban Dynamics |
| title_full_unstemmed | Long-Term (1951–2007) Rainfall Trends around Six Indian Cities: Current State, Meteorological, and Urban Dynamics |
| title_short | Long-Term (1951–2007) Rainfall Trends around Six Indian Cities: Current State, Meteorological, and Urban Dynamics |
| title_sort | long term 1951 2007 rainfall trends around six indian cities current state meteorological and urban dynamics |
| url | http://dx.doi.org/10.1155/2013/572954 |
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