{"id":354954,"date":"2024-12-17T18:37:06","date_gmt":"2024-12-17T17:37:06","guid":{"rendered":"https:\/\/climatescience.press\/?p=354954"},"modified":"2025-03-05T19:38:09","modified_gmt":"2025-03-05T18:38:09","slug":"8-taiwanese-engineers-determine-the-climate-sensitivity-to-a-300-ppm-co2-increase-is-negligibly-small","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=354954","title":{"rendered":"8 Taiwanese Engineers Determine the Climate Sensitivity to A 300 ppm CO2 Increase Is \u2018Negligibly Small\u2019"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

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

From NoTrickZone<\/a><\/p>\n\n\n\n

By\u00a0Kenneth Richard<\/a>\u00a0<\/em><\/p>\n\n\n\n

A new analysis indicates tripling the atmospheric CO2 concentration from 100 to 400 ppm only produces a 0.3\u00b0C surface warming effect.<\/strong><\/p>\n\n\n\n

Eight engineers (Wei et al., 2024<\/a><\/strong>) from the National Sun Yat-Sen University in Taiwan have assessed the capacity of rising CO2 concentrations to affect surface air temperature (SAT) over a 5-year research observation period.<\/p>\n\n\n\n

They constructed a model of the energy balance between the net incident flux and emission at the Earth\u2019s surface.<\/p>\n\n\n\n

\u201cThis work examines one-dimensional transient temperature changes due to conduction, and radiative heat transfer including collimated radiation as a function of longitude, latitude, and altitude, as well as diffuse radiation determined by absorption bands based on wavelength, temperature, and the concentration or pressure of carbon dioxide and water vapor.\u201d<\/em><\/p>\n\n\n\n

The research results do not support the prevailing narrative that says rising CO2 is a driver of SAT change.<\/p>\n\n\n\n

Instead these researchers found tripling atmospheric CO2 from 100 ppm to 400 ppm produces a \u201cnegligibly small\u201d 0.3\u00b0C warming effect. This temperature change is only associated with the increase from 100 ppm to 350 ppm and includes no additional warming as CO2 rises from 350 ppm to 400 ppm.<\/p>\n\n\n\n

\u201c\u2026the effects of carbon dioxide concentration in comparison with spatial and time variations on temperature are negligibly small near the ground surface.\u201d<\/em><\/p>\n\n\n\n

\u201cThe temperature at 5 m above the ground increases by approximately 0.3 K and then maintains constant as carbon dioxide concentrations rise from 100 to 350 ppm and from 350 to 400 ppm over a 5-year period.\u201d<\/em><\/p>\n\n\n\n

For the last 30 years the IPCC has claimed a 300 ppm CO2 increase \u2013 roughly doubling the CO2 concentration from 300 to 600 ppm \u2013 will produce about a 3\u00b0C increase (2.0 to 4.5\u00b0C) in surface air temperature.<\/p>\n\n\n\n

Thus, this new research indicates the IPCC may be overestimating CO2\u2019s capacity to warm the surface by at least factor of 10.<\/p>\n\n\n\n

\"\"
Image Source:\u00a0Wei et al., 2024<\/a><\/strong><\/figcaption><\/figure>\n\n\n\n

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

A new analysis indicates tripling the atmospheric CO2 concentration from 100 to 400 ppm only produces a 0.3\u00b0C surface warming effect.<\/p>\n","protected":false},"author":121246920,"featured_media":354959,"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":[691829997,691832030,691827447,691832029,691826023],"class_list":{"0":"post-354954","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-carbon-dioxide-co","9":"tag-national-sun-yat-sen-university","10":"tag-solar-irradiation","11":"tag-surface-warming-effect","12":"tag-temperature-changes","14":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/00ocean-carbon-cycle.png?fit=1920%2C1078&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1ul4","jetpack-related-posts":[{"id":358601,"url":"https:\/\/climatescience.press\/?p=358601","url_meta":{"origin":354954,"position":0},"title":"Science Shock: CO2 is Good for the Planet, Peer-Reviewed Studies Suggest","author":"uwe.roland.gross","date":"25\/12\/2024","format":false,"excerpt":"Dramatic evidence has been published in a number of recent science papers that carbon dioxide levels are already\u00a0\u2018saturated\u2019, meaning little or no further warming is to be expected, and rising CO2\u00a0levels are all beneficial.","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\/2024\/12\/0Screenshot-2024-12-23-202651.jpeg?fit=1200%2C707&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0Screenshot-2024-12-23-202651.jpeg?fit=1200%2C707&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0Screenshot-2024-12-23-202651.jpeg?fit=1200%2C707&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0Screenshot-2024-12-23-202651.jpeg?fit=1200%2C707&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0Screenshot-2024-12-23-202651.jpeg?fit=1200%2C707&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":357155,"url":"https:\/\/climatescience.press\/?p=357155","url_meta":{"origin":354954,"position":1},"title":"Another Climate Sensitivity Study Finds Doubling CO2 Leads To 0.5\u00b0C Warming at Most","author":"uwe.roland.gross","date":"21\/12\/2024","format":false,"excerpt":"In a\u00a0new study, seven Viennese researchers provide more evidence the CO2 absorption band is already saturated at today\u2019s concentrations (over 400 ppm). 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