{"id":425795,"date":"2026-02-12T17:15:22","date_gmt":"2026-02-12T16:15:22","guid":{"rendered":"https:\/\/climatescience.press\/?p=425795"},"modified":"2026-02-12T17:15:25","modified_gmt":"2026-02-12T16:15:25","slug":"aerosols-the-heads-i-win-tails-you-lose-of-climate-science","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=425795","title":{"rendered":"Aerosols: The Heads I Win, Tails You Lose of Climate Science"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"362\" data-attachment-id=\"425805\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=425805\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework1.jpg?fit=1440%2C720&amp;ssl=1\" data-orig-size=\"1440,720\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"0-scientific framework1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework1.jpg?fit=723%2C362&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework1.jpg?resize=723%2C362&#038;ssl=1\" alt=\"Three computer monitors displaying various scientific graphs and data visualizations related to climate and ocean analysis on a wooden desk.\" class=\"wp-image-425805\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework1.jpg?resize=1024%2C512&amp;ssl=1 1024w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework1.jpg?resize=300%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework1.jpg?resize=768%2C384&amp;ssl=1 768w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework1.jpg?resize=640%2C320&amp;ssl=1 640w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework1.jpg?resize=1200%2C600&amp;ssl=1 1200w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework1.jpg?w=1440&amp;ssl=1 1440w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">From <a href=\"https:\/\/wattsupwiththat.com\/2026\/02\/11\/aerosols-the-heads-i-win-tails-you-lose-of-climate-science\/\">Watts Up With That?<\/a><\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">By <a href=\"https:\/\/wattsupwiththat.com\/author\/jeeztheadmin\/\">Charles Rotter<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"364\" data-attachment-id=\"425803\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=425803\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0Screenshot-2026-02-12-163940.png?fit=1508%2C759&amp;ssl=1\" data-orig-size=\"1508,759\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"0Screenshot 2026-02-12 163940\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0Screenshot-2026-02-12-163940.png?fit=723%2C364&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0Screenshot-2026-02-12-163940.png?resize=723%2C364&#038;ssl=1\" alt=\"Person holding a coin in front of a computer monitor displaying graphs on global temperature changes and sea level rise.\" class=\"wp-image-425803\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0Screenshot-2026-02-12-163940.png?resize=1024%2C515&amp;ssl=1 1024w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0Screenshot-2026-02-12-163940.png?resize=300%2C151&amp;ssl=1 300w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0Screenshot-2026-02-12-163940.png?resize=768%2C387&amp;ssl=1 768w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0Screenshot-2026-02-12-163940.png?resize=640%2C322&amp;ssl=1 640w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0Screenshot-2026-02-12-163940.png?resize=1200%2C604&amp;ssl=1 1200w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0Screenshot-2026-02-12-163940.png?w=1508&amp;ssl=1 1508w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0Screenshot-2026-02-12-163940.png?w=1446&amp;ssl=1 1446w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">\u201cHeads I win, tails you lose\u201d is usually recognized as a rhetorical trick. In climate science, it has matured into a methodological principle. <\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Observations are no longer allowed to contradict theory; they merely reveal which auxiliary explanation must be activated. <\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Aerosols cool when cooling is needed, disappear when warming needs help, and reappear when projections drift off course. A recent paper on Chinese sulfur emissions offers a remarkably clear example of how this works in practice.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">The study,\u00a0<em>\u201c<a href=\"https:\/\/agupubs.onlinelibrary.wiley.com\/doi\/full\/10.1029\/2025GL118851\">Reduction of Global Sulfate Aerosol Concentration and Corresponding Radiative Effects From Recent Chinese SO\u2082 Emission Reduction<\/a>,\u201d<\/em>\u00a0examines how declining sulfur dioxide emissions from China affect sulfate aerosols and, in turn, Earth\u2019s radiation budget. <\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">The conclusion is reassuringly familiar: cleaner air reduces cooling aerosols, allowing warming to emerge more clearly. Models reproduce this effect. Warming follows. Confidence increases.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Abstract<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Anthropogenic emissions over China have recently declined due to environmental actions. <\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">This work estimates the sensitivity of sulfate aerosol (<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><\/semantics><\/math>) concentration to the amount of\u00a0<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><\/semantics><\/math>\u00a0emissions reduction over China from 2010 to 2020 using an Earth system model with two different aerosol representations. <\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">We find that a larger rate of\u00a0<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><\/semantics><\/math>\u00a0emissions decline over 2010\u20132020 from an updated Chinese emission inventory leads to improvement in modeled\u00a0<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><\/semantics><\/math>\u00a0and\u00a0<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><\/semantics><\/math>\u00a0concentrations when evaluated with targeted airborne observations from the Asian summer monsoon region from the 2022 Asian summer monsoon Chemical and Climate Impact Project. <\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Updated Chinese\u00a0<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><\/semantics><\/math>\u00a0emissions reduce\u00a0<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><\/semantics><\/math>\u00a0concentration by >20% at 200\u00a0hPa over the North Pacific, and by >7% at 100\u00a0hPa throughout the tropics. <\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">These\u00a0<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><\/semantics><\/math>\u00a0reductions result in an increase to global net instantaneous radiative forcing of\u00a0<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><\/semantics><\/math>0.10\u20130.15\u00a0W\u00a0<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><\/semantics><\/math>\u00a0by 2020, with regional effects up to\u00a0<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><\/semantics><\/math>6 times greater.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Plain Language Summary<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Recent environmental policies in China have reduced emissions of various chemical species. This study uses recent chemical observations from research aircraft to evaluate how global climate model simulations represent these recent Chinese emissions trends. <\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">We find that configuring a model with a larger emission decline in China over the 2010\u20132020 period improves simulated concentrations of chemical species compared to observations. <\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Model simulations using different Chinese emissions are compared to estimate how much global climate is impacted by the recent emissions reductions. The impacts of emissions differences on aerosols have a considerable effect on Earth\u2019s radiation budget, which must be accounted for in future research including model intercomparison efforts.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">The authors summarize the headline result succinctly:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-medium-font-size wp-block-paragraph\">\u201cThese SO\u2084 reductions result in an increase to global net instantaneous radiative forcing of \u223c0.10\u20130.15 W m\u207b\u00b2 by 2020, with regional effects up to \u223c6 times greater.\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">That number is then framed as potentially important for explaining recent observed temperature increases. Aerosol reductions, we are told, may help reconcile models with reality. The implication is polite but unmistakable: the theory was right; the atmosphere was merely getting in the way.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">This is the \u201cheads I win\u201d side of the coin.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">The \u201ctails you lose\u201d side appears earlier, embedded in the evaluation section, where the authors compare their simulations to direct airborne measurements from the Asian Summer Monsoon Chemical and Climate Impact Project (ACCLIP). Here, the tone shifts from confidence to candor.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Discussing upper-tropospheric sulfate concentrations, the paper notes:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u201cMean modeled UT SO\u2084 concentration for the MAM4-MEIC simulation is a factor of \u223c2.2 higher than observations, and the CARMA-MEIC simulation is a factor of \u223c3.7 higher.\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">This is a structural bias. The models produce two to four times more sulfate aerosol than is observed in the very region used for evaluation.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">To their credit, the authors attempt to diagnose the problem. They run sensitivity experiments. They adjust wet removal efficiencies, convective depth, aerosol activation properties, and even vertical resolution. The results are\u2026 underwhelming.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">As the paper states plainly:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-medium-font-size wp-block-paragraph\">\u201cChanges to SO\u2084 in these experiments were relatively small compared to the existing biases with observations.\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">In other words, the problem stubbornly refuses to go away.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">At this point, a skeptic might reasonably expect the analysis to slow down. If aerosol concentrations are significantly overestimated, then their cooling effect is also overestimated, and any warming attributed to their removal becomes correspondingly uncertain. One might expect strong caution in translating these results into climate-relevant conclusions.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Instead, the paper proceeds with admirable composure.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">After acknowledging the bias, the authors reassure the reader:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-medium-font-size wp-block-paragraph\">\u201cThe model high bias in ASM UTLS SO\u2084 presented herein is not expected to have a significant quantitative impact on our global IRF estimates between the emissions scenarios.\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">And just like that, the difficulty is declared immaterial.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">This is the critical maneuver. Aerosols are allowed to be deeply uncertain when they complicate matters, but suddenly well-behaved when they are needed to support a warming explanation. Overestimated concentrations do not undermine the forcing calculation; they are politely shown to the door.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">The analysis then moves on to radiative forcing, carefully defined as&nbsp;<em>instantaneous<\/em>. Sea surface temperatures are fixed. The atmosphere is nudged toward reanalysis. Rapid adjustments and feedbacks are minimized by design.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">The authors explain:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-medium-font-size wp-block-paragraph\">\u201cThe calculated ToA shortwave (SW) and longwave (LW) radiation changes herein are analogous to \u2018instantaneous\u2019 RF\u2026 which minimizes rapid atmospheric adjustments and feedbacks.\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">This produces a clean number, free from messy responses by the real climate system. It is precise, controlled, and safely insulated from the possibility that something unexpected might happen.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">The resulting forcing is then compared with other model-based estimates and found to be \u201cbroadly consistent.\u201d This agreement is presented as reassuring.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Yet all of the cited estimates come from the same modeling ecosystem, using similar assumptions about aerosol physics, cloud interactions, and transport processes. Agreement within a closed loop is not independent confirmation; it is internal consistency. The system is congratulating itself for speaking with one voice.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">An especially revealing moment comes in the discussion of the Asian Tropopause Aerosol Layer (ATAL). The paper notes that sulfate accounts for only about 30% of this layer, meaning that a roughly 10% reduction in sulfate corresponds to only about a 3% reduction in total aerosol burden.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">The authors describe this as:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-medium-font-size wp-block-paragraph\">\u201ca minor overall impact (\u223c3%) of Chinese SO\u2082 emissions reduction amount on total ATAL aerosol burden.\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Minor overall impact\u2014yet still sufficient to generate a globally relevant radiative forcing signal. Small where inconvenient, large where useful. Aerosols, once again, prove remarkably adaptable.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">The conclusion section completes the narrative arc. The findings are said to be important for improving Earth system models, reproducing recent surface temperature increases, and even informing assessments of stratospheric aerosol injection as a potential intervention strategy.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">The paper observes:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-medium-font-size wp-block-paragraph\">\u201cEstimated global and regional radiation changes given herein are likely important for more precisely reproducing recently observed surface temperature increases in ESMs.\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Which is to say: if the models and observations disagree, the models are not wrong\u2014they are merely awaiting better aerosol accounting.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">There is a quiet irony here. For years, aerosols have been described as dangerously masking greenhouse warming. Now, their removal is invoked to explain why warming appears to be accelerating. And should warming ever slow again, aerosols\u2014or internal variability\u2014will no doubt be ready to assist.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong><em>The paper is careful, technical, and explicit about its limitations.<\/em><\/strong><\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">The problem lies not with what is admitted, but with how those admissions are treated.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Biases are acknowledged.<br>Uncertainties are cataloged.<br><strong>Then conclusions proceed as though neither poses a serious obstacle.<\/strong><\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">This is what \u201cheads I win, tails you lose\u201d looks like in a scientific framework. There is no observational outcome that forces a reconsideration of the underlying assumptions. Warming confirms the theory. Too much warming confirms aerosol masking. Too little warming confirms variability.\u00a0<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Aerosols can cool, warm, hide, reveal, or offset\u2014whatever the moment requires.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"362\" data-attachment-id=\"425807\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=425807\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework.jpg?fit=1440%2C720&amp;ssl=1\" data-orig-size=\"1440,720\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"0 scientific framework\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework.jpg?fit=723%2C362&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework.jpg?resize=723%2C362&#038;ssl=1\" alt=\"A workspace featuring three large monitors displaying various data visualizations and graphs related to scientific analysis, with a focus on a globe illustration in the center screen, under the title 'scientific framework'.\" class=\"wp-image-425807\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework.jpg?resize=1024%2C512&amp;ssl=1 1024w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework.jpg?resize=300%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework.jpg?resize=768%2C384&amp;ssl=1 768w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework.jpg?resize=640%2C320&amp;ssl=1 640w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework.jpg?resize=1200%2C600&amp;ssl=1 1200w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework.jpg?w=1440&amp;ssl=1 1440w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u201cHeads I win, tails you lose\u201d is usually recognized as a rhetorical trick. In climate science, it has matured into a methodological principle. Observations are no longer allowed to contradict theory; they merely reveal which auxiliary explanation must be activated. Aerosols cool when cooling is needed, disappear when warming needs help, and reappear when projections drift off course. A recent paper on Chinese sulfur emissions offers a remarkably clear example of how this works in practice.<\/p>\n","protected":false},"author":121246920,"featured_media":425805,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","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_feature_clip_id":0,"_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":true,"token":"eyJpbWciOiJodHRwczpcL1wvY2xpbWF0ZS1zY2llbmNlLnByZXNzXC93cC1jb250ZW50XC91cGxvYWRzXC8yMDI2XC8wMlwvMC1zY2llbnRpZmljLWZyYW1ld29yazEtMTAyNHg1MTIuanBnIiwidHh0IjoiQWVyb3NvbHM6IFRoZSBIZWFkcyBJIFdpbiwgVGFpbHMgWW91IExvc2Ugb2YgQ2xpbWF0ZSBTY2llbmNlIiwidGVtcGxhdGUiOiJoaWdod2F5IiwiZm9udCI6IiIsImJsb2dfaWQiOjE1NTgxMjQ0OX0.ySBVtjFPv1iM4-ZULHuyh1HDfgx_sub1uEaJ8z14H2EMQ"},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691824309,691841350,691841351,691818341,691819140,691826927,691819430,691841352,691841349],"class_list":["post-425795","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-aerosols","tag-asian-summer-monsoon-chemical-and-climate-impact-project-acclip","tag-asian-tropopause-aerosol-layer-atal","tag-china","tag-climate-science","tag-greenhouse-warming","tag-model-simulations","tag-scientific-framework","tag-sulfur-emissions-so2-so4","fallback-thumbnail"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/02\/0-scientific-framework1.jpg?fit=1440%2C720&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1MLF","jetpack-related-posts":[{"id":354440,"url":"https:\/\/climatescience.press\/?p=354440","url_meta":{"origin":425795,"position":0},"title":"Climate Science\u2014Settled Until It\u2019s Not","author":"uwe.roland.gross","date":"12\/15\/2024","format":false,"excerpt":"Ah, the marvel of modern climate science. For decades, we\u2019ve been reassured that climate models are finely tuned instruments of prediction, capable of telling us what our planet will look like in a hundred years. But every so often, like a plot twist in a mediocre whodunit, we discover a\u2026","rel":"","context":"In \"aerosol cooling\"","block_context":{"text":"aerosol cooling","link":"https:\/\/climatescience.press\/?tag=aerosol-cooling"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0shutterstock-204022084.webp?fit=1100%2C734&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0shutterstock-204022084.webp?fit=1100%2C734&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0shutterstock-204022084.webp?fit=1100%2C734&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0shutterstock-204022084.webp?fit=1100%2C734&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0shutterstock-204022084.webp?fit=1100%2C734&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":352859,"url":"https:\/\/climatescience.press\/?p=352859","url_meta":{"origin":425795,"position":1},"title":"More \u2018Settled\u2019 Climate Science","author":"uwe.roland.gross","date":"11\/30\/2024","format":false,"excerpt":"From the University of East Anglia and the \u201chas anyone told Al Gore?\u201d department comes this finding that speaks to the huge complexity of Earth\u2019s atmosphere and it\u2019s systems. Oceans emit sulfur and cool the climate more than previously thought.","rel":"","context":"In \"Aerosols\"","block_context":{"text":"Aerosols","link":"https:\/\/climatescience.press\/?tag=aerosols"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/11\/00s_14_01_230117_SEL_AUTOR_0017.jpg?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/11\/00s_14_01_230117_SEL_AUTOR_0017.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/11\/00s_14_01_230117_SEL_AUTOR_0017.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/11\/00s_14_01_230117_SEL_AUTOR_0017.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/11\/00s_14_01_230117_SEL_AUTOR_0017.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":354186,"url":"https:\/\/climatescience.press\/?p=354186","url_meta":{"origin":425795,"position":2},"title":"Study: Marine life in oceans has a cooling effect on climate","author":"uwe.roland.gross","date":"12\/13\/2024","format":false,"excerpt":"Putting another nail in the coffin of the mantra that \u201cthe science is settled on climate change,\u201d researchers in Spain have found that global emissions of a sulfur gas produced by marine life have a hitherto unknown cooling effect on temperatures.","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\/12\/0Bubbles-water.jpg?fit=1200%2C804&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0Bubbles-water.jpg?fit=1200%2C804&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0Bubbles-water.jpg?fit=1200%2C804&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0Bubbles-water.jpg?fit=1200%2C804&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/12\/0Bubbles-water.jpg?fit=1200%2C804&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":422479,"url":"https:\/\/climatescience.press\/?p=422479","url_meta":{"origin":425795,"position":3},"title":"Eye-rolling climate science from China","author":"uwe.roland.gross","date":"01\/22\/2026","format":false,"excerpt":"From the \u201ccentral committee told me to pay lip-service to China\u2019s net-zero pathway\u201d department comes this eye-roller\u00a0via EurekaAlert:","rel":"","context":"In \"aerosol reductions\"","block_context":{"text":"aerosol reductions","link":"https:\/\/climatescience.press\/?tag=aerosol-reductions"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/01\/0Screenshot-2026-01-22-090622.png?fit=1200%2C998&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/01\/0Screenshot-2026-01-22-090622.png?fit=1200%2C998&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/01\/0Screenshot-2026-01-22-090622.png?fit=1200%2C998&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/01\/0Screenshot-2026-01-22-090622.png?fit=1200%2C998&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/01\/0Screenshot-2026-01-22-090622.png?fit=1200%2C998&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":376557,"url":"https:\/\/climatescience.press\/?p=376557","url_meta":{"origin":425795,"position":4},"title":"Block the Sun? What could go wrong?","author":"uwe.roland.gross","date":"04\/26\/2025","format":false,"excerpt":"In the end, the man-made climate change disaster, to me is summed up by Mark Twain: \u201cI\u2019ve had a lot of worries in my life, most of which never happened.\u201d","rel":"","context":"In \"Aluminum oxide\"","block_context":{"text":"Aluminum oxide","link":"https:\/\/climatescience.press\/?tag=aluminum-oxide"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/0Sun-dark-cloud-cover.jpg?fit=1200%2C900&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/0Sun-dark-cloud-cover.jpg?fit=1200%2C900&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/0Sun-dark-cloud-cover.jpg?fit=1200%2C900&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/0Sun-dark-cloud-cover.jpg?fit=1200%2C900&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/0Sun-dark-cloud-cover.jpg?fit=1200%2C900&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":300184,"url":"https:\/\/climatescience.press\/?p=300184","url_meta":{"origin":425795,"position":5},"title":"Hunga Tonga-Hunga eruption sent enough water vapor into the stratosphere to cause a rapid change in chemistry","author":"uwe.roland.gross","date":"02\/07\/2024","format":false,"excerpt":"The eruption of the Hunga Tonga-Hunga Ha\u2019apai volcano on January 15, 2022, produced the largest underwater explosion ever recorded by modern scientific instruments, blasting an enormous amount of water and volcanic gases higher than any other eruption in the satellite era.","rel":"","context":"In \"Earth\u2019s stratosphere\"","block_context":{"text":"Earth\u2019s stratosphere","link":"https:\/\/climatescience.press\/?tag=earths-stratosphere"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/02\/0121222_cg_-tonga-hunga-volcano_feat.jpg?fit=1200%2C676&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/02\/0121222_cg_-tonga-hunga-volcano_feat.jpg?fit=1200%2C676&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/02\/0121222_cg_-tonga-hunga-volcano_feat.jpg?fit=1200%2C676&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/02\/0121222_cg_-tonga-hunga-volcano_feat.jpg?fit=1200%2C676&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/02\/0121222_cg_-tonga-hunga-volcano_feat.jpg?fit=1200%2C676&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/425795","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=425795"}],"version-history":[{"count":11,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/425795\/revisions"}],"predecessor-version":[{"id":425809,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/425795\/revisions\/425809"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/media\/425805"}],"wp:attachment":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=425795"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=425795"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=425795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}