Trends in India summer monsoon distribution over the western ghats (Record no. 157856)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03559nam a22001697a 4500 |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 551.6 |
| Item number | ABH/TR |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Abhijit Asokan |
| 245 ## - TITLE STATEMENT | |
| Title | Trends in India summer monsoon distribution over the western ghats |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc | Vellanikkara |
| Name of publisher, distributor, etc | Academy of Climate Change Education and Research |
| Date of publication, distribution, etc | 2016 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 88 |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | BSc-MSc (Integrated) |
| 520 3# - SUMMARY, ETC. | |
| Abstract | The Western Ghats with its strategic position plays a great role in<br/>channelling the summer monsoon rain into the mainland. The natural ecosystems<br/>and human livelihoods of this region are highly dependent on the Indian Summer<br/>Monsoon rainfall and even the slightest change can trigger a change in these<br/>systems. The global climate changing scenario is having its toll in the monsoonal<br/>system over this region. The extreme events in the region have been analysed for<br/>trends using Mann Kendall method and the return periods of the one day maximum<br/>rainfall has been modelled using Generalized Extreme Value (GEV) theory.<br/>The mean annual monsoonal rainfall over the region is 1616.15 mm and the<br/>standard deviation is 242.966.It was observed that the mean annual monsoonal<br/>rainfall varied from 231.4mm in grid 117 to 3416 mm in grid 253. The one day<br/>maximum rainfall extracted from the 32 constituent grids for the entire period<br/>showed a variation from 118.63 mm in 1981 to 316.63 mm in 2005. The temporal<br/>variation in one day maximum rainfall for the time series had a significant trend.<br/>The values were seen to increase steadily and a profound increase was observed in<br/>the recent decades. When the One day maximum rainfall was analysed for different<br/>latitudes, two latitudes (14°N and 21°N) had significant positive trends in One Day<br/>Maximum Rainfall in the whole region. Out of the 32 grids, 7 grids (186, 359, 394,<br/>428, 429, 497 and 498) showed a significant rising trend in one day maximum<br/>rainfall. It was also observed that during the recent years, the occurrence of One<br/>day maximum Rainfall has shifted to the far end of the season.<br/>The number of grids getting heavy, very heavy and extreme rainfall events<br/>was found to have increased during the later years of the study. No significant trend<br/>in the instances of occurrence of heavy rainfall over the years was observed. But a<br/>significant trend was observed in the occurrences of rainfall events of very heavy<br/>and extreme magnitudes. When Split period analysis of the contribution of<br/>moderate and high intensity rainfalls was carried out, it was observed that the share<br/>of high intensity rainfalls had increased and a decrease was observed in the share<br/>of moderate events over the years. The return period analysis of the one day<br/>maximum rainfall events was done and it was observed that the 2 year, 5 year, 10<br/>year, 25 year, 50 year and 100 year return levels of rainfall as 186.2mm, 224.3 mm,<br/>250.2 mm, 283.8 mm, 309.3 mm and 335.1 mm for the complete region. The return<br/>levels for the two year return period were seen to be over 100 mm for the grids of<br/>184 (118mm), 219 (114.9mm), 253 (145.8mm), 285 (104.5mm), 357 (147.6 mm),<br/>392 (144.2mm), 427 (129.9mm) and 462 (122.4mm).<br/>A significant rising trend in the extreme events of summer monsoon rainfall<br/>over the Western Ghats was observed. This calls for better planning in all areas of<br/>livelihoods and management strategies to contain the disasters of a changing<br/>climate.<br/> |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Climate Change Education and Research |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Kurien, E K (Guide) |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | http://krishikosh.egranth.ac.in/handle/1/5810141245 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Item type | Theses |
| Not for loan | Collection code | Home library | Current library | Shelving location | Date acquired | Full call number | Barcode | Date last seen | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Not For Loan | Reference Book | KAU Central Library, Thrissur | KAU Central Library, Thrissur | Theses | 07/12/2017 | 551.6 ABH/TR | 174034 | 07/12/2017 | Theses |