{"id":286651,"date":"2023-11-05T16:05:40","date_gmt":"2023-11-05T15:05:40","guid":{"rendered":"https:\/\/climatescience.press\/?p=286651"},"modified":"2023-11-05T16:05:44","modified_gmt":"2023-11-05T15:05:44","slug":"james-hansen-hots-it-up-even-higher","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=286651","title":{"rendered":"James Hansen Hots it Up Even Higher"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

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

According to a new\u00a0paper<\/a>\u00a0in\u00a0Oxford Open Climate Change, the strategies humanity must pursue to reduce climate change will have to include more than reducing greenhouse gases. This new paper comes from the \u201cfather of global warming\u201d James Hansen.<\/em><\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

From Watts Up With That?<\/a><\/p>\n\n\n\n

New<\/em> paper from the \u201cfather of global warming\u201d argues reducing greenhouse gas emissions is not enough to combat climate change<\/em>.<\/p>\n\n\n\n

From a EurekaAlert press release<\/a>:<\/p>\n\n\n\n

According to a new paper in Oxford Open Climate Change<\/em>, published by Oxford University Press, the strategies humanity must pursue to reduce climate change will have to include more than reducing greenhouse gases. This comes from an analysis of climate data led by researcher James Hansen.<\/p>\n\n\n\n

Scientists have known since the 1800s that infrared-absorbing (greenhouse) gases warm the Earth\u2019s surface and that the abundance of greenhouse gases changes naturally as well as from human actions. Roger Revelle, who was one of the early scientists to study global warming, wrote in 1965 that industrialization meant that human beings were conducting a \u201cvast geophysical experiment\u201d by burning fossil fuels, which adds carbon dioxide (CO2<\/sub>) to the air. CO2<\/sub> has now reached levels that have not existed for millions of years.<\/p>\n\n\n\n

Climate sensitivity<\/strong><\/p>\n\n\n\n

A long-standing issue concerns how much global temperature will rise for a specified CO2<\/sub> increase. A 1979 study released by the United States National Academy of Sciences concluded that doubling atmospheric CO2<\/sub> with ice sheets fixed would likely cause global warming between 1.5 and 4.5\u00b0 Celsius. This was a large range, and there was additional uncertainty about the delay in warming caused by Earth\u2019s massive ocean. This new paper reevaluates climate sensitivity based on improved paleoclimate data, finding that climate is more sensitive than usually assumed. Their best estimate for doubled CO2<\/sub> is global warming of 4.8\u00b0C, significantly larger than the 3\u00b0C best estimate of the United Nations Intergovernmental Panel on Climate Change.<\/p>\n\n\n\n

Aerosols<\/strong><\/p>\n\n\n\n

The authors also conclude that much of the expected greenhouse gas warming in the past century has been offset by the cooling effect of human-made aerosols \u2013 fine airborne particles. Aerosols have declined in amount since 2010 as a result of reduced air pollution in China and global restrictions on aerosol emissions from ships. This aerosol reduction is good for human health, as particulate air pollution kills several million people per year and adversely affects the health of many more people. However, aerosol reduction is now beginning to unmask greenhouse gas warming that had been hidden by aerosol cooling. The authors have long termed the aerosol cooling a \u201cFaustian bargain\u201d because, as humanity eventually reduces air pollution, payment in the form of increased warming comes due.<\/p>\n\n\n\n

Prediction<\/strong><\/p>\n\n\n\n

This new paper predicts that a post-2010 acceleration of global warming will soon be apparent above the level of natural climate variability. The 1970-2010 global warming rate of 0.18\u00b0C per decade is predicted to increase to at least 0.27\u00b0C per decade during the few decades after 2010.  As a result, the 1.5\u00b0C global warming level will be passed this decade and the 2\u00b0C level will be passed within the following two decades.<\/p>\n\n\n\n

Policy<\/strong><\/p>\n\n\n\n

In a final section, Hansen describes his perspective based on decades of experience in trying to affect government policies. First, he believes that achievement of rapid phasedown of CO2<\/sub> emissions requires a rising domestic carbon fee with a border duty on products from nations without a carbon fee, as well as support of modern nuclear power to complement renewable energies. Second, he argues that the West, which is primarily responsible for climate change, must cooperate with developing nations to help them achieve energy paths consistent with a propitious climate for all. Third, even with these efforts, Hansen believes that global warming will reach levels with dangerous consequences; he argues we should also carry out research and development for temporary, purposeful, actions to address Earth\u2019s now enormous energy imbalance.<\/p>\n\n\n\n

A decade ago, Hansen noted that Earth was out of energy balance by 0.6 W\/m2<\/sup> (watts per square meter). There was that much more energy coming in (absorbed sunlight) than going out (heat radiation to space). That excess \u2013 which is the proximate cause of global warming \u2013 is equivalent to 400,000 Hiroshima atomic bombs per day, with most of that energy going into the ocean. Now, largely because of decreasing aerosols, the imbalance has doubled to about 1.2 W\/m2<\/sup>. This huge imbalance is the proximate cause of accelerated global warming and increased melting of polar ice, which is likely to shut down overturning ocean circulations and cause large, rapidly rising, sea level later this century.<\/p>\n\n\n\n

The paper argues that such action will be essential to avoid the greater geotransformation that will occur in the absence of such action. Potential actions include injection of stratospheric aerosols, for which volcanoes provide relevant but inadequate test cases, and spraying of salty ocean water by autonomous sail boats in regions susceptible to cloud seeding.<\/p>\n\n\n\n

Hansen suggests that young people focus on an underlying problem that has developed in western democracies, especially the United States: \u201cThe ideal of one person\/one vote has been replaced by one dollar\/one vote,\u201d Hansen argued. \u201cSpecial financial interests \u2013 the fossil fuel industry, the chemical industry, the lumber industry, the food industry, for example \u2013 are allowed to buy politicians. It is no wonder that climate is running out of control, environmental toxicity is in the process of exterminating insects including pollinators, forests are mismanaged, and agriculture is designed for profit, not for nutrition and the public\u2019s well-being.\u201d<\/p>\n\n\n\n

\u201cWe live on a planet with a climate characterized by delayed response, which is a recipe for intergenerational injustice,\u201d Hansen continued. \u201cYoung people need to understand this situation and the actions needed to assure a bright future for themselves and their children.\u201d<\/p>\n\n\n\n

The paper, \u201cGlobal warming in the pipeline,\u201d will be available (at midnight on November 2nd<\/sup>) at: https:\/\/doi.org\/10.1093\/oxfclm\/kgad008<\/a>.<\/p>\n\n\n\n

Direct correspondence to:\u00a0
James Hansen
Director, Program on Climate Science, Awareness, and Solutions,\u00a0
Earth Institute at Columbia University
475 Riverside Drive (Room 401-O)
New York, NY 10115
jeh1@columbia.edu<\/a><\/p>\n\n\n\n

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

According to a new\u00a0paper\u00a0in\u00a0Oxford Open Climate Change, the strategies humanity must pursue to reduce climate change will have to include more than reducing greenhouse gases. This new paper comes from the \u201cfather of global warming\u201d James Hansen. From Watts Up With That? New paper from the \u201cfather of global warming\u201d argues reducing greenhouse gas emissions is […]<\/p>\n","protected":false},"author":121246920,"featured_media":286656,"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":"According to a new\u00a0paper\u00a0in\u00a0Oxford Open Climate Change, the strategies humanity must pursue to reduce climate change will have to include more than reducing greenhouse gases. This new paper comes from the \u201cfather of global warming\u201d James Hansen.","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"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":[691824309,691824308,691818056,691818076,691818087,691820453],"class_list":{"0":"post-286651","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-aerosols","9":"tag-father-of-global-warming","10":"tag-climate-change","11":"tag-co2","12":"tag-global-warming","13":"tag-james-hansen","15":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/OIG-2023-07-29T140658.612.jpeg?fit=1024%2C1024&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1czp","jetpack-related-posts":[{"id":378944,"url":"https:\/\/climatescience.press\/?p=378944","url_meta":{"origin":286651,"position":0},"title":"Reduced Cloud Cover & Global\u00a0Warming","author":"uwe.roland.gross","date":"20\/05\/2025","format":false,"excerpt":"There is actually no great secret about any of this \u2013 it has long been known that cloud cover has decreased since at least the 1980s, mirroring the rise in sea surface temperatures.","rel":"","context":"In \"Clean Air Acts\"","block_context":{"text":"Clean Air Acts","link":"https:\/\/climatescience.press\/?tag=clean-air-acts"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/05\/0Screenshot-2025-05-20-093834.png?fit=1200%2C739&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/05\/0Screenshot-2025-05-20-093834.png?fit=1200%2C739&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/05\/0Screenshot-2025-05-20-093834.png?fit=1200%2C739&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/05\/0Screenshot-2025-05-20-093834.png?fit=1200%2C739&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/05\/0Screenshot-2025-05-20-093834.png?fit=1200%2C739&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":365506,"url":"https:\/\/climatescience.press\/?p=365506","url_meta":{"origin":286651,"position":1},"title":"James Hansen: Democracies Require \u201cFixing\u201d to Stop Global Warming","author":"uwe.roland.gross","date":"09\/02\/2025","format":false,"excerpt":"According to the Hansen the 2.0C climate target is dead.","rel":"","context":"In \"2.0C climate target\"","block_context":{"text":"2.0C climate target","link":"https:\/\/climatescience.press\/?tag=2-0c-climate-target"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/0hansen-1.webp?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/0hansen-1.webp?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/0hansen-1.webp?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/0hansen-1.webp?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/0hansen-1.webp?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":414016,"url":"https:\/\/climatescience.press\/?p=414016","url_meta":{"origin":286651,"position":2},"title":"Paris Agreement: Dead at Ten (James Hansen was right)","author":"uwe.roland.gross","date":"20\/11\/2025","format":false,"excerpt":"COP30, a CO2-fest of sorts, is failing. Major emitters have not shown up. Virtually all nations and regions are in serious noncompliance with their Paris Agreement goals according to Climate Tracker, and the gap is widening. The new pitch is less about emissions as about the fantasy of cheap wind\u2026","rel":"","context":"In \"carbon dioxide (CO\u2082)\"","block_context":{"text":"carbon dioxide (CO\u2082)","link":"https:\/\/climatescience.press\/?tag=carbon-dioxide-co%e2%82%82"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/11\/0AQOV1Ly_K6eqvIzDNauSgjSgzLJNmQSFah47CxlkRa7BXNUyW5gTuT0eCKMDeTlD5BkevoY7UzeabJGEBRjbqq4IXWIyezPeVI9K7tlmxHQkYg1Wa7etac7uyJrxeYwa-1.jpeg?fit=1200%2C891&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/11\/0AQOV1Ly_K6eqvIzDNauSgjSgzLJNmQSFah47CxlkRa7BXNUyW5gTuT0eCKMDeTlD5BkevoY7UzeabJGEBRjbqq4IXWIyezPeVI9K7tlmxHQkYg1Wa7etac7uyJrxeYwa-1.jpeg?fit=1200%2C891&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/11\/0AQOV1Ly_K6eqvIzDNauSgjSgzLJNmQSFah47CxlkRa7BXNUyW5gTuT0eCKMDeTlD5BkevoY7UzeabJGEBRjbqq4IXWIyezPeVI9K7tlmxHQkYg1Wa7etac7uyJrxeYwa-1.jpeg?fit=1200%2C891&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/11\/0AQOV1Ly_K6eqvIzDNauSgjSgzLJNmQSFah47CxlkRa7BXNUyW5gTuT0eCKMDeTlD5BkevoY7UzeabJGEBRjbqq4IXWIyezPeVI9K7tlmxHQkYg1Wa7etac7uyJrxeYwa-1.jpeg?fit=1200%2C891&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/11\/0AQOV1Ly_K6eqvIzDNauSgjSgzLJNmQSFah47CxlkRa7BXNUyW5gTuT0eCKMDeTlD5BkevoY7UzeabJGEBRjbqq4IXWIyezPeVI9K7tlmxHQkYg1Wa7etac7uyJrxeYwa-1.jpeg?fit=1200%2C891&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":263587,"url":"https:\/\/climatescience.press\/?p=263587","url_meta":{"origin":286651,"position":3},"title":"Wrong Again: James Hansen 1988 Senate Testimony Edition","author":"uwe.roland.gross","date":"23\/06\/2023","format":false,"excerpt":"NASA scientist James Hansen launched climate idiocy on June 23, 1988 with his famous Senate testimony. This review of it 35 years later indicates that Hansen\u2019s testimony was largely just hot air, which no doubt contributed to the legendary stuffiness of the Senate hearing room that day.","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\/2023\/06\/0014014819_0.jpg?fit=1200%2C630&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0014014819_0.jpg?fit=1200%2C630&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0014014819_0.jpg?fit=1200%2C630&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0014014819_0.jpg?fit=1200%2C630&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0014014819_0.jpg?fit=1200%2C630&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":287011,"url":"https:\/\/climatescience.press\/?p=287011","url_meta":{"origin":286651,"position":4},"title":"Dr. Jim Advises Panic","author":"uwe.roland.gross","date":"07\/11\/2023","format":false,"excerpt":"Fear, Gloom, and Panic, Oh My! Panic Sells, Calm Saves. From Watts Up With That? Guest Post by Willis Eschenbach I see that my favorite serially failed climate doomcaster, Dr. James Hansen, is at it again. Accompanied by his usual Greek chorus of co-sycophants, he\u2019s written a new paper entitled\u00a0Global\u2026","rel":"","context":"In \"50-year trailing accelerations\"","block_context":{"text":"50-year trailing accelerations","link":"https:\/\/climatescience.press\/?tag=50-year-trailing-accelerations"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/zombie-apocalypse-header.jpg?fit=920%2C500&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/zombie-apocalypse-header.jpg?fit=920%2C500&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/zombie-apocalypse-header.jpg?fit=920%2C500&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/zombie-apocalypse-header.jpg?fit=920%2C500&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":378617,"url":"https:\/\/climatescience.press\/?p=378617","url_meta":{"origin":286651,"position":5},"title":"James Hansen: Climate Cassandra or Science Salesman?","author":"uwe.roland.gross","date":"16\/05\/2025","format":false,"excerpt":"One would think that James Hansen\u2014once lionized as the father of modern climate alarmism\u2014might bask in the limelight after a fresh round of histrionics about Earth hurtling toward a \u201cpoint of no return.\u201d Instead, we find him on the pages of his latest blog-style polemic,\u00a0\u201cLarge Cloud Feedback Confirms High Climate\u2026","rel":"","context":"In \"albedo change\"","block_context":{"text":"albedo change","link":"https:\/\/climatescience.press\/?tag=albedo-change"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/05\/0ChatGPT-Image-16.-Mai-2025-16_42_52.png?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/05\/0ChatGPT-Image-16.-Mai-2025-16_42_52.png?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/05\/0ChatGPT-Image-16.-Mai-2025-16_42_52.png?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/05\/0ChatGPT-Image-16.-Mai-2025-16_42_52.png?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/286651","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=286651"}],"version-history":[{"count":4,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/286651\/revisions"}],"predecessor-version":[{"id":286657,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/286651\/revisions\/286657"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/media\/286656"}],"wp:attachment":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=286651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=286651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=286651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}