Diametric changes in trends and patterns of extreme rainfall over India from pre-1950 to post-1950
DSpace at IIT Bombay
View Archive InfoField | Value | |
Title |
Diametric changes in trends and patterns of extreme rainfall over India from pre-1950 to post-1950
|
|
Creator |
VITTAL, H
KARMAKAR, S GHOSH, S |
|
Subject |
Rainfall Extremes
Indian Monsoon SUMMER MONSOON 1981 CENSUS URBANIZATION SPELLS |
|
Description |
Spatially aggregated extreme rainfall over India shows an increasing trend over the last 50years of the 20th century, while fine-resolution analysis reveals a spatially nonuniform trend. Analysis of 104years (1901-2004) extreme precipitation over India at 1 degrees resolution, using Extreme Value Theory, reveals that post-1950 extreme rainfall characteristics (intensity, duration, and frequency) and their trends are significantly different from those of before 1950, with spatial nonuniformity. Majority of the locations in India have post-1950 trends of extremes with a different sign as compared to pre-1950. Further investigations with statistical change point analysis reveal that fraction of grid points having post-1975 changes is maximum. Majority of the urbanized areas have post-1975 change points, while the same is not true for nonurban areas. As urbanization has intensified during 1971-1981 in India, these results indicate the possible impacts of urbanization on extreme rainfall trends and patterns.
|
|
Publisher |
AMER GEOPHYSICAL UNION
|
|
Date |
2014-10-14T12:50:51Z
2014-10-14T12:50:51Z 2013 |
|
Type |
Article
|
|
Identifier |
GEOPHYSICAL RESEARCH LETTERS, 40(12)3253-3258
http://dx.doi.org/10.1002/grl.50631 http://dspace.library.iitb.ac.in/jspui/handle/100/14449 |
|
Language |
en
|
|