Climate Change

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August 11, 2024 Even in the face of daunting challenges like climate change, collective action and community engagement can lead to meaningful change
SeasonWatch tree walk at Rupa Rahul Bajaj Centre for Environment and Art (Image: SeasonWatch)
August 2, 2024 There is a need for a multi-faceted approach to disaster management, combining advanced monitoring, early warning systems, community preparedness, and sustainable land use practices to mitigate future risks.
Aftermath of a 2022 landslide on Nedumpoil ghat road (Image: Vinayaraj, Wikimedia Commons; CC BY-SA 4.0)
July 10, 2024 Millions of trees are fast disappearing from India's farmlands. What are its implications for agriculture and the environment?
Disappearing trees over Indian farmlands (Image Source: WOTR)
June 7, 2024 Scientists question effectiveness of nature-based CO2 removal using the ocean
Ocean ecosystem (Image: PxHere, CC0 Public Domain)
June 6, 2024 एक अध्ययन से पता चलता है कि समुद्री लू या हीटवेव (असामान्य रूप से उच्च समुद्री तापमान की अवधि) जो पहले हर साल लगभग 20 दिनों तक होती थी (1970-2000 के बीच), वह बढ़कर 220 से 250 दिन प्रति वर्ष हो सकती है। जानिए क्या होंगे इसके परिणाम?
गर्म होते महासागर
May 31, 2024 From scorching to sustainable: Building resilience against heatwaves
A multifaceted approach to urban heatwaves (Image: Sri Kolari)
Effect of climate change on river Kosi and its basin
Considering the vulnerability of the Kosi's basin, the melting glaciers will acerbate the problem a hundredfold. The melting glaciers will release much more water than normal in a short time thus creating a flood situation. Posted on 28 Aug, 2009 02:46 PM

Kosi is one of Ganga's largest tributaries and in turn is fed by 7 tributaries - Sun Koshi, Dudh Koshi, Indravati, Tama Kosi, Likhu, Arun, and Tamar. These tributaries encircle Mt Everest from all sides and are fed by world's highest glaciers. The river drains a total area of 69,300 sqkm upto its confluence with Ganga. The river basin stretches 54,000 sq.kms.

Effect of climate change on the Ganga-Brahmaputra delta regions
The Ganga-Brahmaputra-Meghana delta belt comprises of 105,000 sq. kms of which 2/3rds is in Bangladesh. The Ganga-Brahmaputra-Meghana system has the largest catchment area of 1,100,000 km². The delta region is particularly vulnerable to seasonal floods, heavy run-offs from melting snows, and tropical cyclones in the Bay of Bengal. Inspite of this, it is one of the most thickly populated regions on Earth. Posted on 28 Aug, 2009 02:28 PM

The delta belt is home to approximately 125-140 million people. And over 300 million people are supported by the delta. The density of population in the Delta region is 200 people / sq.km. making it one of the densest regions in the world.

The delta region is a high-rainfall region and receives 60-80 inches of rainfall every year.

Impact of climate change on major river basins in India: The Indo-Gangetic-Plains
The effect of climate change on the Indo-Gangetic-Plain region will primarily be by the glacier melting impacts and heat waves and extreme climates Posted on 28 Aug, 2009 02:14 PM

The Indo-Gangetic Plains, formed by the drainage systems of the rivers Indus and the Ganga, stretch across the countries of Bangladesh, Nepal, India and Pakistan covering approximately 401.72 million hectares of land.

Migration and displacement due to sea-level rise: Mega-cities like Mumbai, Kolkata and Chennai could be hit hard
A one-meter sea level rise will inundate 6000 square kilometers in India, of which Mumbai, Kolkata and Chennai will be the major cities being affected. This would mean losses of billions of dollars in infrastructural, social, physical assets and capital. Posted on 26 Aug, 2009 05:34 PM

125 million people are likely to migrate in the coming century of which 75 million will be from Bangladesh. The people from Bangladesh will most likely migrate to India in addition to our own 50 to 60 million people who will be displaced due to sea-level rise, shrinking water sources due to CC in the densely populated coastal regions of India.

References of the impact of climate change on river deltas and other coastal areas
A short compilation of articles and reports on the impact of climate change on river deltas and other coastal areas Posted on 26 Aug, 2009 04:48 PM

Mumbai Marooned: An Enquiry into Mumbai Floods 2005 - Final Report ,
By Conservation Action Trust - Click here

Enquiry-mumbai-floods-2005-final-report

Impact of climate change on river deltas and other coastal areas in India
While global warming is a matter of worldwide concern, among the most vulnerable areas are the coastlines of less developed tropical countries such as India. The river deltas, in particular, are already facing the brunt of climate change and these adverse impacts can be expected to increase dramatically in the course of this century. Posted on 26 Aug, 2009 04:23 PM

The effects are most visible in the Sunderbans. Literally the 'beautiful forest', these wetlands at the mouths of the Ganga and Brahmaputra river systems are among the largest mangrove forests in the world. About 62% of this area of some10000sq km lies in Bangladesh but there is a significant Indian portion in the state of West Bengal.

Quick reference: Climate change impacts on freshwater ecosystems in the Himalayas (CCIFEH)
Climate change impacts on freshwater ecosystems in the Himalayas (CCIFEH) is a joint initiative of WWF-India and WWF Nepal, funded by WWF-The Netherlands. Posted on 26 Aug, 2009 04:01 PM

The programme entails a panorama of actions working towards understanding future climate change impacts on Himalayan river ecosystems and vulnerable communities for the development of adaptation strategies; implementation of pilot sites; and raising the awareness of climate change impacts on Himalayan river basins, in addition to urging specific adaptation strategie

Glacier lake outburst floods: Wrecking havoc to life and property in the Himalayan region
A glacier lake outburst flood (GLOF) is caused when the glacial lakes burst their banks and cause widespread floods. In the past two decades there have been a number of glacier lake outburst floods. The increase in the melting of glaciers have led to this phenomenon. Posted on 26 Aug, 2009 03:47 PM

These floods cause havoc with human life, flora and fauna of the area and the infrastructure in the region.

The Dig Tosho Glacier lake outburst in August 1985, destroyed the nearly completed Namche hydropower plant and all the rails, roads, and other infrastructure in its course.

How climate change has affected Ladakh: The region has seen unusual floods in July 2005 and August 2006
Ladakh is known as the cold-desert and has severe conditions and is barren and arid. The region has seen unusual floods in July 2005 and August 2006. Posted on 26 Aug, 2009 03:36 PM

It is in Jammu Kashmir and is bordered by the Himalayas and the Karakoram mountain chains. Ladakh and its water sources are almost entirely dependent on the glaciers and snow-melts and changes in water systems can be directly attributed to changes in the glaciers and thus climate change.

Impact of climate change on the Himalayan glaciers
40% reduction has occurred in the Himalayan glaciers in the last 40 years. 67% of the glaciers have retreated in the last decade. Gangotri is retreating at the rate of 28 m per year. Global warming and its consequent melting of glaciers would result in floods, fast and furious run-offs, erosion of the topsoil and sedimentation of the rivers. This could also lead to changes in the course of the rivers in the region. Posted on 26 Aug, 2009 03:30 PM

The Himalayas' permanent ice cover is around 97,000 sq.km. with 12,930 sq.km. volume of ice and snow: 10-20 % are covered by glaciers and 30-40% are seasonal snowfalls. The Himalayan streams and rivers are fed by the melting of snow and ice of approximately 500 sq.km / year.

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