{"id":330632,"date":"2024-05-30T10:35:39","date_gmt":"2024-05-30T08:35:39","guid":{"rendered":"https:\/\/climatescience.press\/?p=330632"},"modified":"2024-05-30T10:35:42","modified_gmt":"2024-05-30T08:35:42","slug":"downplaying-light-stress-to-hype-global-warming-misinforms-the-public-about-coral-bleaching","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=330632","title":{"rendered":"DOWNPLAYING LIGHT STRESS TO HYPE GLOBAL WARMING MISINFORMS THE PUBLIC ABOUT CORAL BLEACHING"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

<\/a>By Jim Steele<\/a><\/p>\n\n\n\n

Why have major coral bleaching events occurred during EL Nino events?<\/strong> <\/p>\n\n\n\n

During an El Nino, warm water stored in the Pacific Warm Pool of the Coral Triangle sloshes eastward. That lowers the ocean temperatures in the western Pacific and raises temperatures in the eastern Pacific (illustration A). It also shifts the centers of convection eastward and the resulting changes in atmospheric circulation cause downward air flow typical of heat domes and clearer skies over the western Pacific and Atlantic Ocean (Illustration D). That causes more intense solar radiation and coral light stress.<\/strong><\/p>\n\n\n\n

Due to the biochemistry governing photosynthesis, high light stress causes the increased production of dangerous oxidants (aka ROS: Reactive Oxygen Species). Dangerous oxidants damage living tissues, which is why all organisms naturally produce and ingest anti-oxidants<\/strong>. So, when corals\u2019 symbiotic algae produce too much ROS and overwhelm a coral\u2019s natural anti-oxidant systems, to prevent further damage, the coral eject their symbiotic algae and that causes bleaching.<\/p>\n\n\n\n

As peer reviewed science explains, \u201cThe most likely explanation to the commonest form of mass coral bleaching involves the production of Reactive Oxygen Species associated with Photosystem I of photosynthesis<\/strong> (and to some extent Photosystem II): namely superoxide (O2- ), hydrogen peroxide (H2O2) and singlet oxygen.\u201d<\/p>\n\n\n\n

See\u201cA Review: The Role of Reactive Oxygen Species in Mass Coral Bleaching<\/em> Szab\u00f3 (2020)<\/p>\n\n\n\n

Alarmist scientists with a global warming agenda (i.e. Hughes, or Hoegh-Guldberg) always tell click-bait media the same narrative, that global warming is the main cause of bleaching. But increased solar radiation creates both high light stress and heat stress and heat stress can affect the efficiency of the corals\u2019 antioxidant protection<\/strong>. So, both excess heat and light can increase the accumulation of ROS.<\/p>\n\n\n\n

Which is the primary cause?<\/p>\n\n\n\n

Unfortunately, rarely have studies satisfactorily separated the two factors. But those that have suggest light stress is the main factor. For example read: Antioxidant responses to heat and light stress differ with habitat in a common reef coral <\/em>Hawkins (2015). For the species Stylophora pistillata they state,<\/p>\n\n\n\n

\u201cOverall, changes in enzymatic antioxidant activity in the symbionts were driven primarily by irradiance rather than temperature<\/strong>, and responses were similar across depth groups. Taken together, our results suggest that in the absence of light stress, heating of 1C\/day to 4C above ambient, is not sufficient to induce a substantial oxidative challenge<\/strong>\u201d.<\/p>\n\n\n\n

That’s why regions of reduced cloud cover during El Nino events correlate with so-called \u201cglobal bleaching events\u201d that happened in 1998, 2010, and 2014-2017 and now 2023-24.<\/p>\n\n\n\n

Major eastern-Pacific El Nino events also happened in 1997\u201398, 2014\u201316, and 2023\u201324 and a Modoki El Nino 2009-2010. As seen in illustration B’s white circles, the death rate from bleaching during the 2023\u201324 El Nino, is associated with regions where El Nino induced atmospheric subsidence and reduced cloud cover that increases light stress.<\/p>\n\n\n\n

The alarmists seeking power can\u2019t control solar radiation, but they want to control the public\u2019s use of energy. So, they unscientifically ignore changes in clooud cover choosing to blame global warming for coral bleaching and evidence that rising CO2 is killing coral! Alarmists deny the science!<\/p>\n\n\n\n

<\/a><\/p>\n\n\n\n

<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Why have major coral bleaching events occurred during EL Nino events?<\/p>\n","protected":false},"author":121246920,"featured_media":330637,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_crdt_document":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691818076,691820471,691818200,691818087,691820367],"class_list":{"0":"post-330632","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-co2","9":"tag-coral-bleaching","10":"tag-el-nino","11":"tag-global-warming","12":"tag-solar-radiation","14":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/05\/0GOnZeEQa4AMJU8-.jpeg?fit=4096%2C2264&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1o0M","jetpack-related-posts":[{"id":364009,"url":"https:\/\/climatescience.press\/?p=364009","url_meta":{"origin":330632,"position":0},"title":"Truths about Coral Bleaching: CO2 Warming vs Reduced Clouds Cover?","author":"uwe.roland.gross","date":"30\/01\/2025","format":false,"excerpt":"The coral that now form our modern reefs evolved 240 million years ago during the Age of Dinosaurs when coral formed a marvelously fluid symbiotic relationship with symbiodinium algae. The new algae symbionts absorbed CO2 and produced sugars via photosynthesis for the coral. In turn coral respiration produced CO2 that\u2026","rel":"","context":"In \"Bleaching\"","block_context":{"text":"Bleaching","link":"https:\/\/climatescience.press\/?tag=bleaching"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0Great-Barrier-Reef.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0Great-Barrier-Reef.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0Great-Barrier-Reef.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0Great-Barrier-Reef.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0Great-Barrier-Reef.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":307678,"url":"https:\/\/climatescience.press\/?p=307678","url_meta":{"origin":330632,"position":1},"title":"Wrong, Reuters and CNN, Coral Doing Well Amidst Modest Warming, Bleaching \u2260 Coral Death","author":"uwe.roland.gross","date":"13\/03\/2024","format":false,"excerpt":"Bleaching may occur, but history shows such events do not equal coral death, and the evidence suggests that the cause for any bleaching that occurs this year is a short-term spike in ocean temperatures due to natural El Ni\u00f1o patterns, not climate change.","rel":"","context":"In \"Climate change\"","block_context":{"text":"Climate change","link":"https:\/\/climatescience.press\/?tag=climate-change"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/03\/0-Great-Barrier-Reef-12.jpg?fit=1200%2C676&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/03\/0-Great-Barrier-Reef-12.jpg?fit=1200%2C676&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/03\/0-Great-Barrier-Reef-12.jpg?fit=1200%2C676&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/03\/0-Great-Barrier-Reef-12.jpg?fit=1200%2C676&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/03\/0-Great-Barrier-Reef-12.jpg?fit=1200%2C676&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":325869,"url":"https:\/\/climatescience.press\/?p=325869","url_meta":{"origin":330632,"position":2},"title":"Climate Change: A Natural Hazard \u2013 A Note from Bill Kininmonth","author":"uwe.roland.gross","date":"04\/05\/2024","format":false,"excerpt":"There has been a lot in the press about the recent spike in global temperatures, and claims have followed about how this has caused the oceans to warm and the corals to bleach.","rel":"","context":"In \"Bill Kininmonth\"","block_context":{"text":"Bill Kininmonth","link":"https:\/\/climatescience.press\/?tag=bill-kininmonth"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/05\/01404091602000-AP-Carbon-Satellite.webp?fit=1200%2C679&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/05\/01404091602000-AP-Carbon-Satellite.webp?fit=1200%2C679&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/05\/01404091602000-AP-Carbon-Satellite.webp?fit=1200%2C679&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/05\/01404091602000-AP-Carbon-Satellite.webp?fit=1200%2C679&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/05\/01404091602000-AP-Carbon-Satellite.webp?fit=1200%2C679&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":306710,"url":"https:\/\/climatescience.press\/?p=306710","url_meta":{"origin":330632,"position":3},"title":"The \u201cGreat Barrier Reef Is Dying\u201d\u00a0Scam","author":"uwe.roland.gross","date":"09\/03\/2024","format":false,"excerpt":"Dr Ridd said: \"The public are constantly told that reefs are being irreparably damaged by global warming, but bleaching events, about which there is so much doom-mongering, are simply corals\u2019 natural response to changes in the environment. 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This afternoon I was at Wreck Point, and in the distance, over my left shoulder, you can see Great Keppel Island. According to the New York Times there is mass coral bleaching there .","rel":"","context":"In \"AIMS (Australian Institute of Marine Sciences)\"","block_context":{"text":"AIMS (Australian Institute of Marine Sciences)","link":"https:\/\/climatescience.press\/?tag=aims-australian-institute-of-marine-sciences"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/04\/01.Jen-IMG_5156-annotated.jpeg?fit=1200%2C758&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/04\/01.Jen-IMG_5156-annotated.jpeg?fit=1200%2C758&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/04\/01.Jen-IMG_5156-annotated.jpeg?fit=1200%2C758&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/04\/01.Jen-IMG_5156-annotated.jpeg?fit=1200%2C758&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/04\/01.Jen-IMG_5156-annotated.jpeg?fit=1200%2C758&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/330632","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/users\/121246920"}],"replies":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=330632"}],"version-history":[{"count":6,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/330632\/revisions"}],"predecessor-version":[{"id":330639,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/330632\/revisions\/330639"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/media\/330637"}],"wp:attachment":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=330632"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=330632"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=330632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}