Hyderabad may see frequent unseasonal rain in future: Study

Intense unseasonal rainfall leading to flooding are likely to become a routine affair in Hyderabad in near future, says a new study.

Published: 14th January 2018 12:14 AM  |   Last Updated: 14th January 2018 07:10 AM   |  A+A-

HYDERABAD: Intense unseasonal rainfall leading to flooding are likely to become a routine affair in Hyderabad in near future, says a new study. The primary reason is a climate phenomenon called El-Nino Southern Oscillation (ENSO).

Researchers from National Institute of Technology (NIT), Warangal, conducted a study to see the relationship between ENSO and the Indian Ocean Dipole (IOD) — another climate phenomenon — with the extreme rainfall events occurring during monsoon and non-monsoon months in Hyderabad observing two time periods — 1901-1950 and 1951-2004. June-September is the monsoon season.

They found a 60 per cent increase in ENSO effect on extreme rainfall events in Hyderabad in the non-monsoon months. This is a cause of concern as global warming might add to the damage along with El Nino or La Nina — the two  discrepancies of ENSO, which occur once in few years.

The researchers had already established in a previous study that La Nina has more effect on extreme rainfall events in Hyderabad. It may be recalled that last year, Hyderabad witnessed many spurts of rainfall in October and November, measuring 5-10 cm per hour (categorised as extremely intense) and between 3-5 cm per hour (very intense spell), flooding parts of the city.

“With an increase in extreme rainfall events, the risk of urban flooding also increases. Our project is aimed at providing data which would help the municipality in achieving this. There’s a need to increase rain gauges in Hyderabad and store rainfall intensity information on an hourly basis,” said Dr NV Umamahesh who was part of the study.

Stay up to date on all the latest The Sunday Standard news with The New Indian Express App. Download now
(Get the news that matters from New Indian Express on WhatsApp. Click this link and hit 'Click to Subscribe'. Follow the instructions after that.)

Comments

Disclaimer : We respect your thoughts and views! But we need to be judicious while moderating your comments. All the comments will be moderated by the newindianexpress.com editorial. Abstain from posting comments that are obscene, defamatory or inflammatory, and do not indulge in personal attacks. Try to avoid outside hyperlinks inside the comment. Help us delete comments that do not follow these guidelines.

The views expressed in comments published on newindianexpress.com are those of the comment writers alone. They do not represent the views or opinions of newindianexpress.com or its staff, nor do they represent the views or opinions of The New Indian Express Group, or any entity of, or affiliated with, The New Indian Express Group. newindianexpress.com reserves the right to take any or all comments down at any time.

facebook twitter whatsapp