{"id":42406,"date":"2025-04-30T21:19:47","date_gmt":"2025-04-30T15:49:47","guid":{"rendered":"https:\/\/www.nextias.com\/ca\/?p=42406"},"modified":"2025-04-30T21:21:10","modified_gmt":"2025-04-30T15:51:10","slug":"climate-driven-extreme-weather-events","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/ca\/current-affairs\/30-04-2025\/climate-driven-extreme-weather-events","title":{"rendered":"Climate-driven Extreme Weather Events"},"content":{"rendered":"\n<p><strong>Syllabus: GS3\/Environment<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Context<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A new study published in Nature Geoscience reveals that <strong>climate-driven extreme weather events<\/strong> in India\u2019s summer monsoon <strong>could permanently disrupt the Bay of Bengal\u2019s marine productivity.<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>About<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>This study highlights the <strong>critical link between monsoon variability and marine ecosystem health<\/strong> in the Bay of Bengal over the <strong>past 22,000 years.<\/strong><\/li>\n\n\n\n<li><strong>Foraminifera microfossils<\/strong> were used to <strong>reconstruct past ocean conditions, <\/strong>revealing how monsoons and ocean chemistry evolved in response to global climate change.\n<ul class=\"wp-block-list\">\n<li>Shells of foraminifera, tiny single-celled marine organisms record environmental data in their calcium carbonate shells.\u00a0<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>The study is significant given that <strong>several climate models warn of significant disruption to the monsoon, <\/strong>under the impact of human-caused warming.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Major Findings<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Both abnormally strong and weak monsoons <\/strong>throughout history <strong>caused major disruptions in ocean mixing, <\/strong>leading to a<strong> 50% reduction in food for marine life<\/strong>.\n<ul class=\"wp-block-list\">\n<li>Disrupted ocean mixing <strong>leads to plankton starvation.<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Marine Productivity: <\/strong>Marine productivity declined sharply during periods like Heinrich Stadial 1 (a cold phase between 17,500 and 15,500 years ago) and the early Holocene (about 10,500 to 9,500 years ago), when monsoons were either unusually weak or strong.\u00a0<\/li>\n\n\n\n<li><strong>Climate Crisis:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Past collapses during Heinrich Stadial 1 and early Holocene show a clear link between extreme monsoons and productivity crashes.<\/li>\n\n\n\n<li>Future climate models forecast warmer surface waters and unstable monsoon behavior\u2014conditions that mirror historic downturns.<\/li>\n\n\n\n<li>The ocean\u2019s inability to support plankton would catastrophically undermine the marine food web.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Concerns and Impacts:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Bay of Bengal has &lt;1% of ocean surface, but contributes ~8% of global fishery production.<\/li>\n\n\n\n<li>Hilsa fish, crucial for protein and income across South Asia, is especially at risk.<\/li>\n\n\n\n<li>150+ million people depend on Bay fisheries; Bangladesh\u2019s artisanal sector, which provides 80% of the national marine catch, is already under stress from overfishing.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Recommendations<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Strengthen and refine climate models to better predict monsoon impacts.<\/li>\n\n\n\n<li>Enforce sustainable fisheries management, especially in vulnerable artisanal sectors.<\/li>\n\n\n\n<li>Accelerate action on emissions, as global warming is intensifying monsoon swings.<\/li>\n\n\n\n<li>Protect coastal communities with adaptive resource planning and conservation policies.<\/li>\n<\/ul>\n\n\n\n<p><strong>Source: <\/strong><a href=\"https:\/\/www.thehindu.com\/sci-tech\/energy-and-environment\/changes-in-monsoon-strength-affects-marine-productivity-in-bay-of-bengal\/article69503841.ece#:~:text=The%20study%20found%20that%20both,life%20in%20the%20surface%20waters.\" target=\"_blank\" rel=\"noopener\"><strong>TH<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<h3><strong>Context<\/strong><\/h3>\n<li class=\"ms-5\">A new study published in Nature Geoscience reveals that climate-driven extreme weather events in India\u2019s summer monsoon could permanently disrupt the Bay of Bengal\u2019s marine productivity.<\/li>\n<p><\/p>\n<h3><strong>About<\/strong><\/h3>\n<li class=\"ms-5\">This study highlights the critical link between monsoon variability and marine ecosystem health in the Bay of Bengal over the past 22,000 years.<\/li>\n<li class=\"ms-5\">Foraminifera microfossils were used to reconstruct past ocean conditions, revealing how monsoons and ocean chemistry evolved in response to global climate change.<\/li>\n<p><a href=\"https:\/\/www.nextias.com\/ca\/current-affairs\/30-04-2025\/climate-driven-extreme-weather-events\" class=\"btn btn-primary btn-sm float-end\">Read More<\/a><\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-42406","post","type-post","status-publish","format-standard","hentry","category-current-affairs"],"acf":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/42406","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/comments?post=42406"}],"version-history":[{"count":2,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/42406\/revisions"}],"predecessor-version":[{"id":42423,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/42406\/revisions\/42423"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media?parent=42406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/categories?post=42406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/tags?post=42406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}