Rainfall and other forms of Precipitation

Featured Articles
September 13, 2022 Heavy rains and floods have battered Bengaluru yet again. Uncontrolled and unregulated development and concretisation of the city that pays no heed to the ecology and hydrology of the region needs to stop!
Urban flooding in Bangalore (Image Source: Thejas via Wikimedia Commons)
March 29, 2022 The intensity and duration of heat waves is predicted to increase in India and human induced anthropogenic changes are to blame.
A man sits under the scorching heat of the sun in front of Amer fort in Jaipur (Picture courtesy: Prabhu B Doss, Flickr Commons: CC-By-NC-ND-2.0)
February 10, 2022 47% of India’s population is vulnerable to floods, says IMD's Climate Hazards Atlas
(Image: J Surya, CC-SA-4.0 International)
July 4, 2021 A study finds that while forests existed in peninsular India, they were replaced by savanna grasslands over time. And the weakening monsoon was the culprit!
Savanna grasslands at Nannaj Bustard Sanctuary, Solapur, Maharashtra (Image Source: Raju Kasambe via Wikimedia Commons)
June 30, 2021 Climate analysis predicts mismatch in rainfall and temperature patterns with crop phenology: Soybean, Cotton, Wheat and Gram crops at risk, finds Institute for Sustainable Communities study across three major regions of Maharashtra.
Maharashtra faces an increasing risk from climate change which is likely to impact the production of four major crops - Soybean, Cotton, Wheat and Gram.  (Image: BAIF Flickr, CC BY-NC-SA 2.0)
December 13, 2019 A study highlights the need to scale down the export of rice, maize, buffalo meat and other items to conserve groundwater in India.
A farmer uses a hosepipe to irrigate crops at her farm in Nilgiris mountains, Tamil Nadu (Image: Hamish John Appleby for IWMI, Flickr Commons, CC BY-NC-ND 2.0)
Mapping pollution hotspots in Yamuna
A sensor network system is being used for mapping and monitoring the water quality of river Yamuna. Posted on 01 May, 2019 10:38 AM

The Yamuna was considered a nurturing and life-enhancing goddess in the past. Legend has it that bathing in the sacred waters of the Yamuna, the sister of Yama, the god of death, frees one from the ordeal of death. The 1376-km river is a tributary of the Ganga and originates in the Yamunotri glacier in the lower Himalayas.

A project, conceptualised by a team of researchers from the University of Chicago, US helps demonstrate that scalable water quality mapping systems can detect and predict water contamination (Image:India Water Portal)
IMD predicts near-normal monsoon this year
News this week Posted on 17 Apr, 2019 12:53 PM

India could witness near-normal monsoon this season: IMD

Normal monsoon is good news for India's economy. (Source: IWP Flickr photos)
In conversation with nature
This study from Bihar shows that official flood prediction systems are often inadequate to understand the true impact of the floods on the population. Local gendered knowledge can help fill this gap. Posted on 15 Apr, 2019 05:42 PM

“There is a special type of black ant that is visible just before (and during) the onset of heavy rains.

Shape of clouds can be an important indicator of weather. Source: Robert Hensley/Wikimedia Commons
Almost half of the country reels under drought: Study
News this week Posted on 04 Apr, 2019 07:00 AM

Study reveals that nearly 42 percent of India’s land area is facing drought

India will see more droughts in the future. (Image Source: Wikimedia Commons)
Could the water towers of Asia be drying up soon?
As climate change and urbanisation threaten water security in the HKH region, there is an urgent need for good water governance. Posted on 24 Mar, 2019 11:03 AM

The Hindu Kush Himalayas (HKH) cover 3500 kms across eight countries namely Afghanistan, Bangladesh, Bhutan, China, India, Myanmar, Nepal and Pakistan.

A view of the Himalayas. (Source: IWP Flickr photos--photo for representation purpose only)
SC orders forced eviction of tribals, forest dwellers
Policy matters this week Posted on 27 Feb, 2019 01:31 PM

Forced eviction ordered for more than one million tribals and forest-dwellers

Tribal women in Chhattisgarh (Source: IWP Flickr photos)
The Himalayan glaciers shrink
A study suggests water towers of Asia contain less water than estimated. Posted on 19 Feb, 2019 03:07 PM

The Himalayas are often called the water towers of Asia because of the vast amount of water locked in the form of ice in thousands of glaciers there. But concerns relating to climate change have often put a question mark on future water availability from these glaciers.

Glaciers in the Hindu Kush Himalayas might contain 27 percent less ice than previously believed. (Pic: IWP Flickr photos)
Can we gain from changing rains?
While changing rainfall patterns, increased frequency of cyclones, droughts and floods threaten food and water security in India, adaptation strategies to cope with these changes are crucial. Posted on 07 Feb, 2019 12:30 PM

India is undergoing a major transition with changes in rainfall patterns leading to increased frequency of droughts, floods, heat waves amidst fear of a major water crisis in the years to come. Why are these threats increasing?

Changing rainfall patterns in India (Image Source: IWP Flickr photos)
Sunderbans tagged under Ramsar Convention
News this week Posted on 05 Feb, 2019 05:41 PM

Indian Sunderbans gets recognition under Ramsar Convention on Wetlands 

Mangroves of the Sunderbans (Source: Nature Environment & Wildlife Society - NEWS)
Extreme rainfall events need not lead to floods
Many hydraulic factors such as physiography, drainage, catchment size and vegetation cover are critical for peak flood conditions. Posted on 21 Jan, 2019 06:36 PM

It has been reported that extreme rainfall events are increasing over India and widespread floods have increased threefold over the last several decades from an average of two events per year to six events per year. But the link between extreme rainfall events and rising incidence of floods remains tenuous.  

Many hydraulic factors influence occurrence of floods. (Pic: IWP flickr photos)
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