Rainfall intensity characteristics at coastal and high altitude stations in Kerala
Rainfall intensities measured at a few stations in Kerala during 2001-2005 using a disdrometer were found to be in reasonable agreement with the total rainfall measured using a manual rain gauge. The temporal distributions of rainfall intensity at different places and during different months show th...
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| Veröffentlicht in: | Journal of Earth System Science 2007-10, Vol.116 (5), p.451-463 |
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| creator | Sasi Kumar, V. Sampath, S. Vinayak, P. V. S. S. K. Harikumar, R. |
| description | Rainfall intensities measured at a few stations in Kerala during 2001-2005 using a disdrometer were found to be in reasonable agreement with the total rainfall measured using a manual rain gauge. The temporal distributions of rainfall intensity at different places and during different months show that rainfall is of low intensity (< 10 mm/hr), 65% to 90% of the time. This could be an indication of the relative prevalence of stratiform and cumuliform clouds. Rainfall was of intensity < 5 mm/hr for more than 95% of the time in Kochi in July 2002, which was a month seriously deficient in rainfall, indicating that the deficiency was probably due to the relative absence of cumuliform clouds. Cumulative distribution graphs are also plotted and fitted with the Weibull distribution. The fit parameters do not appear to have any consistent pattern. The higher intensities also contributed significantly to total rainfall most of the time, except in Munnar (a hill station). In this analysis also, the rainfall in Kochi in July 2002 was found to have less presence of high intensities. This supports the hypothesis that the rainfall deficiency was probably caused by the absence of conditions that favoured the formation of cumuliform clouds.[PUBLICATION ABSTRACT] |
| doi_str_mv | 10.1007/s12040-007-0043-1 |
| format | Article |
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V. S. S. K. ; Harikumar, R.</creator><creatorcontrib>Sasi Kumar, V. ; Sampath, S. ; Vinayak, P. V. S. S. K. ; Harikumar, R.</creatorcontrib><description>Rainfall intensities measured at a few stations in Kerala during 2001-2005 using a disdrometer were found to be in reasonable agreement with the total rainfall measured using a manual rain gauge. The temporal distributions of rainfall intensity at different places and during different months show that rainfall is of low intensity (< 10 mm/hr), 65% to 90% of the time. This could be an indication of the relative prevalence of stratiform and cumuliform clouds. Rainfall was of intensity < 5 mm/hr for more than 95% of the time in Kochi in July 2002, which was a month seriously deficient in rainfall, indicating that the deficiency was probably due to the relative absence of cumuliform clouds. Cumulative distribution graphs are also plotted and fitted with the Weibull distribution. The fit parameters do not appear to have any consistent pattern. The higher intensities also contributed significantly to total rainfall most of the time, except in Munnar (a hill station). In this analysis also, the rainfall in Kochi in July 2002 was found to have less presence of high intensities. 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Cumulative distribution graphs are also plotted and fitted with the Weibull distribution. The fit parameters do not appear to have any consistent pattern. The higher intensities also contributed significantly to total rainfall most of the time, except in Munnar (a hill station). In this analysis also, the rainfall in Kochi in July 2002 was found to have less presence of high intensities. 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| source | Indian Academy of Sciences; EZB-FREE-00999 freely available EZB journals; SpringerLink Journals - AutoHoldings |
| subjects | Altitude Cloud formation Clouds Coasts Distribution Distribution graphs Graphs High altitude Marine Precipitation Rain gauges Rainfall Rainfall deficiency Rainfall intensity Rainfall measurement Weibull distribution |
| title | Rainfall intensity characteristics at coastal and high altitude stations in Kerala |
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