Analysis of Monthly
and Daily Annual Extreme Precipitation for Urban Vadodara
Pandit Chirayu and Mujumdar Sanskriti
Disaster Advances; Vol. 18(4); 37-46;
doi: https://doi.org/10.25303/184da037046; (2025)
Abstract
Human intervention due to change in landuse landcover, emission of greenhouse gases
and aerosols affects local climate. Spatial analysis of long term annual rainfall
and very wet days of 5 years’ time window of rural and urban stations of Vadodara
district reveals that urban annual rainfall is rising as compared to surrounding
peri-urban and rural rainfall. One-day annual extreme rainfall is important for
understanding and establishing impacts of climate change. Information about occurrence
of extreme precipitation is of utmost importance for flood mitigation. One-day annual
extremes and consecutive 5 day extremes are important for research in climate change.
If the likelihood or probability of occurrence of month of extreme value is known
in advance, it can play, big role in preparedness of local governing bodies in tackling
resulting problem due to extreme event. One-day annual extremes can give clear picture
about flash flood occurrence. This study analyzes monthly one-day annual extreme
values for a period of 90 years for Vadodara. It helps us to analyze the pattern
of occurrence and more specifically month of occurrence for one-day extremes. GEV
distribution for June, July, August, September and October month in one-day extreme
annual rainfall series was fitted. Results show gradual change in pattern of occurrence
for months of July and August with occurrence of one-day annual extreme gradually
converging towards July.
