{"id":72789,"date":"2021-06-23T12:36:19","date_gmt":"2021-06-23T07:06:19","guid":{"rendered":"https:\/\/newsmakhani.com\/?p=72789"},"modified":"2021-06-24T12:41:47","modified_gmt":"2021-06-24T07:11:47","slug":"river-runoff-glacier-melt-and-seasonality-of-flow-in-rivers-projected-to-increase-in-future","status":"publish","type":"post","link":"https:\/\/newsnarad.com\/hi\/river-runoff-glacier-melt-and-seasonality-of-flow-in-rivers-projected-to-increase-in-future\/","title":{"rendered":"River runoff, glacier melt and seasonality of flow in rivers projected to increase in future"},"content":{"rendered":"

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Delhi 23 JUN 2021<\/strong><\/div>\n

Snow and glaciers are melting rapidly in the Himalayan range due to climate change, altering water supplies in the rivers like Indus, Ganga and Brahmaputra in the Himalaya-Karakoram (HK) ranges.<\/p>\n

The HK region in South Asia, often called the water tower of Asia or the Third Pole is one of the most heavily glacierized mountain regions on Earth. Understanding the response of HK rivers to climate change is crucial for almost 1 billion people who partly depend on these water resources.<\/p>\n

Total river runoff, glacier melt, and seasonality of flow in these rivers are projected to increase until the 2050s, with some exceptions and large uncertainties, according to a study \u201cGlacio-hydrology of the Himalaya-Karakoram<\/a>\u201d published in the journal\u00a0\u2018SCIENCE<\/em>\u2019<\/p>\n

The research led by Dr\u00a0Mohd.\u00a0Farooq Azam, assistant professor at the Indian Institute of Technology Indore gathered the results from more than 250 scholarly research papers to arrive at a more accurate understanding \u2014something approaching a consensus\u2014 of the links between climatic warming, precipitation change and glacier shrinkage.<\/p>\n

The study shows that glacier and snow melt are important components of HK rivers with greater hydrological importance for the Indus than Ganga and Brahmaputra basins.<\/p>\n

\u201cThe Himalayan river basins cover an area of 2.75 million km2<\/sup>\u00a0and have the largest irrigated area of 577,000 km2<\/sup>, and the world\u2019s largest installed hydropower capacity of 26,432 MW. The melting glaciers fulfils the water requirements of more than a billion people of the region who\u00a0will be affected when much of the glacier ice mass melts throughout this century and gradually stops supplying\u00a0the required\u00a0amount of water,\u201d said\u00a0Dr Azam.<\/strong><\/p>\n

He added \u201cregion-wide, the total impact on each year\u2019s water supply\u00a0varies. Glacier meltwater, and climate change impacts on glaciers, are more crucial\u00a0for\u00a0the Indus basin\u00a0in comparison to the Ganga and Brahmaputra basins which are predominantly fed by monsoon rains and are affected mainly due to the changing rainfall patterns.\u201d<\/p>\n

Smriti Srivastava, a PhD student of Dr. Azam and co-author of the study said\u00a0\u201c<\/strong>projected trends in river runoff volume and seasonality over the 21st<\/sup>\u00a0century are consistent across a range of climate change scenarios. Total river runoff, glacier melt, and seasonality of flow are projected to increase until the 2050s, and then decrease, with some exceptions and large uncertainties.\u201d<\/p>\n

The work supported by\u00a0INSPIRE Faculty fellowship funded by the Department of Science and Technology (DST), GoI\u00a0identified gaps in understanding the impacts of climate change on the Himalayan water resources, and highlighted prospective solutions to bridge these gaps. This INSPIRE Faculty project also resulted in a research documentary earlier (https:\/\/youtu.be\/sPaqNs-bttI<\/a>).<\/p>\n

Policymakers need to assess the current status and potential future changes of rivers for sustainable water resource management for agriculture, hydropower, drinking, sanitation, and hazard situations.<\/p>\n

The authors recommend a tiered approach to address the identified gaps: Tier-1 includes an expanded observation network that places fully automatic weather stations on selected glaciers. They also suggest developing comparison projects to examine glacier area and volumes, glacier dynamics, permafrost thaw, and snow and ice sublimation. Meanwhile, Tier-2 recommendations implement the knowledge of these studies in detailed models of glacier hydrology to reduce the uncertainty in projections of future change.<\/p>\n

 <\/p>\n

Publication link:<\/strong>\u00a010.1126\/science.abf3668 (2021)<\/p>\n

 <\/p>\n

For more information contact:\u00a0Mohd. Farooq Azam at\u00a0farooqazam@iiti.ac.in<\/a>\u00a0(cell: 0091-8476085786).<\/p>","protected":false},"excerpt":{"rendered":"

\u0915\u094d\u0937\u092e\u093e \u0915\u0930\u0947\u0902, \u092f\u0939 \u0938\u092e\u093e\u091a\u093e\u0930 \u0906\u092a\u0915\u0947 \u0905\u0928\u0941\u0930\u094b\u0927 \u0915\u0940 \u092d\u093e\u0937\u093e \u092e\u0947\u0902 \u0909\u092a\u0932\u092c\u094d\u0927 \u0928\u0939\u0940\u0902 \u0939\u0948\u0964 \u0915\u0943\u092a\u092f\u093e \u092f\u0939\u093e\u0901 \u0926\u0947\u0916\u0947\u0902\u0964 Delhi 23 JUN 2021 Snow and glaciers are melting rapidly in the Himalayan range due to climate change, altering water supplies in the rivers like Indus, Ganga and Brahmaputra in the Himalaya-Karakoram (HK) ranges. The HK region in South Asia, […]<\/p>\n","protected":false},"author":13,"featured_media":72791,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[109,122,7],"tags":[38888,38890,38894,38891,38893,38887,38889,15516,38892],"class_list":{"0":"post-72789","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-national","8":"category-news","9":"category-technology","10":"tag-glacio-hydrology-of-the-himalaya-karakoram","11":"tag-https-youtu-be-spaqns-btti","12":"tag-dr-mohd-farooq-azam","13":"tag-dr-azam","14":"tag-ganga","15":"tag-hk-region-in-south-asia","16":"tag-hydrological","17":"tag-ministry-of-science-technology","18":"tag-smriti-srivastava"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/newsnarad.com\/hi\/wp-json\/wp\/v2\/posts\/72789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/newsnarad.com\/hi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/newsnarad.com\/hi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/newsnarad.com\/hi\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/newsnarad.com\/hi\/wp-json\/wp\/v2\/comments?post=72789"}],"version-history":[{"count":0,"href":"https:\/\/newsnarad.com\/hi\/wp-json\/wp\/v2\/posts\/72789\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/newsnarad.com\/hi\/wp-json\/wp\/v2\/media\/72791"}],"wp:attachment":[{"href":"https:\/\/newsnarad.com\/hi\/wp-json\/wp\/v2\/media?parent=72789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/newsnarad.com\/hi\/wp-json\/wp\/v2\/categories?post=72789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/newsnarad.com\/hi\/wp-json\/wp\/v2\/tags?post=72789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}