{"id":326060,"date":"2025-02-07T17:08:43","date_gmt":"2025-02-07T11:38:43","guid":{"rendered":"https:\/\/forumias.com\/blog\/?p=326060"},"modified":"2025-02-12T19:18:45","modified_gmt":"2025-02-12T13:48:45","slug":"marine-heatwaves-mhws","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/marine-heatwaves-mhws\/","title":{"rendered":"Marine Heatwaves (MHWs)"},"content":{"rendered":"<p><b>News:<\/b><span style=\"font-weight: 400;\"> The <strong>marine heatwaves (MHWs)<\/strong> off the coast of Western Australia have led to the death of over 30,000 fish in January 2025. These heatwaves, which began in September 2024, are still ongoing and have been intensifying over time.<\/span><\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\" wp-image-326548 aligncenter\" src=\"https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/02\/Marine-Heatwaves-MHWs.png?resize=654%2C434&#038;ssl=1\" alt=\"Marine Heatwaves (MHWs)\" width=\"654\" height=\"434\" srcset=\"https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/02\/Marine-Heatwaves-MHWs.png?resize=300%2C199&amp;ssl=1 300w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/02\/Marine-Heatwaves-MHWs.png?resize=1024%2C680&amp;ssl=1 1024w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/02\/Marine-Heatwaves-MHWs.png?resize=768%2C510&amp;ssl=1 768w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/02\/Marine-Heatwaves-MHWs.png?w=1280&amp;ssl=1 1280w\" sizes=\"auto, (max-width: 654px) 100vw, 654px\" \/><\/p>\n<h2><span style=\"font-weight: 400;\">About Marine Heatwaves (MHWs)<\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Marine heatwaves (MHWs) are extreme weather events where the sea surface temperature (SST) rises by <\/span><b>3 to 4 degrees Celsius above the average<\/b><span style=\"font-weight: 400;\"> for at least five consecutive days.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">These events can persist for <\/span><b>weeks, months, or even years<\/b><span style=\"font-weight: 400;\">, impacting marine ecosystems.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">According to the <\/span><b>National Oceanic and Atmospheric Administration (NOAA)<\/b><span style=\"font-weight: 400;\">, marine heatwaves have become more frequent, intense, and long-lasting due to climate change.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">Reasons behind Marine Heatwaves Intensification<\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">The primary driver of intensifying marine heatwaves is <\/span><b>climate change<\/b><span style=\"font-weight: 400;\">. As global temperatures have risen by <\/span><b>1.3 degrees Celsius above pre-industrial levels<\/b><span style=\"font-weight: 400;\">, oceans have absorbed <\/span><b>90% of the excess heat<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">As a result, the global mean <\/span><b>sea surface temperature has increased by 0.9 degrees Celsius since 1850<\/b><span style=\"font-weight: 400;\"> and <\/span><b>0.6 degrees Celsius in the last four decades<\/b><span style=\"font-weight: 400;\">, according to the <\/span><b>Copernicus Climate Change Service<\/b><span style=\"font-weight: 400;\">.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">A <\/span><b>2018 study<\/b><span style=\"font-weight: 400;\"> predicted that the number of marine heatwaves will <\/span><b>increase 16 times if global warming reaches 1.5 degrees Celsius<\/b><span style=\"font-weight: 400;\"> and <\/span><b>23 times if it reaches 2 degrees Celsius<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">Impact of Marine Heatwaves<\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Marine heatwaves have severe consequences for marine ecosystems.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">The <\/span><b>2010\u201311 heatwaves in Western Australia<\/b><span style=\"font-weight: 400;\"> caused large-scale fish deaths and destroyed <\/span><b>kelp forests<\/b><span style=\"font-weight: 400;\">, which serve as critical habitats for marine life.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">These heatwaves also contribute to <\/span><b>coral bleaching<\/b><span style=\"font-weight: 400;\">, which weakens corals, reduces their reproductive ability, and makes them more vulnerable to diseases.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">In <\/span><b>2024<\/b><span style=\"font-weight: 400;\">, the <\/span><b>Great Barrier Reef<\/b><span style=\"font-weight: 400;\"> experienced <\/span><b>catastrophic coral bleaching<\/b><span style=\"font-weight: 400;\">, marking its <\/span><b>seventh mass bleaching event<\/b><span style=\"font-weight: 400;\">, due to prolonged exposure to marine heatwaves.<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>News: The marine heatwaves (MHWs) off the coast of Western Australia have led to the death of over 30,000 fish in January 2025. These heatwaves, which began in September 2024, are still ongoing and have been intensifying over time. About Marine Heatwaves (MHWs) Marine heatwaves (MHWs) are extreme weather events where the sea surface temperature&hellip; <a class=\"more-link\" href=\"https:\/\/forumias.com\/blog\/marine-heatwaves-mhws\/\">Continue reading <span class=\"screen-reader-text\">Marine Heatwaves (MHWs)<\/span><\/a><\/p>\n","protected":false},"author":10366,"featured_media":326548,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[1566,4182,12039],"tags":[11872,10500],"class_list":["post-326060","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-daily-factly-articles","category-environment","category-knolls","tag-9pm-daily-factly","tag-indian-express","entry"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/02\/Marine-Heatwaves-MHWs.png?fit=1280%2C850&ssl=1","views":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/326060","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/users\/10366"}],"replies":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/comments?post=326060"}],"version-history":[{"count":0,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/326060\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/media\/326548"}],"wp:attachment":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/media?parent=326060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/categories?post=326060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/tags?post=326060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}