{"id":418689,"date":"2025-12-26T17:15:46","date_gmt":"2025-12-26T16:15:46","guid":{"rendered":"https:\/\/climatescience.press\/?p=418689"},"modified":"2025-12-27T03:37:09","modified_gmt":"2025-12-27T02:37:09","slug":"measuring-climate-change-without-a-ruler","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=418689","title":{"rendered":"Measuring Climate Change Without a Ruler"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"723\" data-attachment-id=\"418692\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=418692\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/12\/AQM9h3oaLnI-bQP2i2fGE3PFcl5lj5RBa2LjO_sU1_nO2DrerVg7sOiyQmizJqSQn-ttvOygYEYpL8SIGiwXukr7VUP4rVHnfS7eEpJz4dXPBfivUF_M0qwX691A7g9u-jzY187XynrMnmpDZEVPip4yWuRpPA.jpeg?fit=1280%2C1280&amp;ssl=1\" data-orig-size=\"1280,1280\" 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=\"AQM9h3oaLnI-bQP2i2fGE3PFcl5lj5RBa2LjO_sU1_nO2DrerVg7sOiyQmizJqSQn-ttvOygYEYpL8SIGiwXukr7VUP4rVHnfS7eEpJz4dXPBfivUF_M0qwX691A7g9u-jzY187XynrMnmpDZEVPip4yWuRpPA\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/12\/AQM9h3oaLnI-bQP2i2fGE3PFcl5lj5RBa2LjO_sU1_nO2DrerVg7sOiyQmizJqSQn-ttvOygYEYpL8SIGiwXukr7VUP4rVHnfS7eEpJz4dXPBfivUF_M0qwX691A7g9u-jzY187XynrMnmpDZEVPip4yWuRpPA.jpeg?fit=723%2C723&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/12\/AQM9h3oaLnI-bQP2i2fGE3PFcl5lj5RBa2LjO_sU1_nO2DrerVg7sOiyQmizJqSQn-ttvOygYEYpL8SIGiwXukr7VUP4rVHnfS7eEpJz4dXPBfivUF_M0qwX691A7g9u-jzY187XynrMnmpDZEVPip4yWuRpPA.jpeg?resize=723%2C723&#038;ssl=1\" alt=\"A tranquil ocean scene at sunset, with soft waves reflecting sunlight and a hazy horizon in the background.\" class=\"wp-image-418692\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/12\/AQM9h3oaLnI-bQP2i2fGE3PFcl5lj5RBa2LjO_sU1_nO2DrerVg7sOiyQmizJqSQn-ttvOygYEYpL8SIGiwXukr7VUP4rVHnfS7eEpJz4dXPBfivUF_M0qwX691A7g9u-jzY187XynrMnmpDZEVPip4yWuRpPA.jpeg?resize=1024%2C1024&amp;ssl=1 1024w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/12\/AQM9h3oaLnI-bQP2i2fGE3PFcl5lj5RBa2LjO_sU1_nO2DrerVg7sOiyQmizJqSQn-ttvOygYEYpL8SIGiwXukr7VUP4rVHnfS7eEpJz4dXPBfivUF_M0qwX691A7g9u-jzY187XynrMnmpDZEVPip4yWuRpPA.jpeg?resize=300%2C300&amp;ssl=1 300w, 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https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/12\/AQM9h3oaLnI-bQP2i2fGE3PFcl5lj5RBa2LjO_sU1_nO2DrerVg7sOiyQmizJqSQn-ttvOygYEYpL8SIGiwXukr7VUP4rVHnfS7eEpJz4dXPBfivUF_M0qwX691A7g9u-jzY187XynrMnmpDZEVPip4yWuRpPA.jpeg?resize=60%2C60&amp;ssl=1 60w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/12\/AQM9h3oaLnI-bQP2i2fGE3PFcl5lj5RBa2LjO_sU1_nO2DrerVg7sOiyQmizJqSQn-ttvOygYEYpL8SIGiwXukr7VUP4rVHnfS7eEpJz4dXPBfivUF_M0qwX691A7g9u-jzY187XynrMnmpDZEVPip4yWuRpPA.jpeg?resize=550%2C550&amp;ssl=1 550w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/12\/AQM9h3oaLnI-bQP2i2fGE3PFcl5lj5RBa2LjO_sU1_nO2DrerVg7sOiyQmizJqSQn-ttvOygYEYpL8SIGiwXukr7VUP4rVHnfS7eEpJz4dXPBfivUF_M0qwX691A7g9u-jzY187XynrMnmpDZEVPip4yWuRpPA.jpeg?w=1280&amp;ssl=1 1280w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">From <a href=\"https:\/\/wattsupwiththat.com\/2025\/12\/23\/measuring-climate-change-without-a-ruler-2\/\">Watts Up With That?<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By <a href=\"https:\/\/wattsupwiththat.com\/author\/jeeztheadmin\/\">Charles Rotter<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[note: this was published behind the paywall last week to premium users, but it\u2019s time for complete public release]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>An Epistemological Problem at the Heart of Ocean Heat Content<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The central empirical claim of modern climate science is that the Earth system is gaining energy, and that this gain is sufficiently well measured to justify strong conclusions about long-term warming.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This claim does not fail because of greenhouse physics, radiative transfer, or conservation laws. It fails\u2014or at least becomes far less certain\u2014because of a&nbsp;<strong>category error about measurement<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That error becomes obvious once one confronts the scale, dominance, and uncertainty of the ocean\u2019s energy content.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The Ocean Dominates the Climate Energy System<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">More than 90% of the energy attributed to recent climate change is claimed to reside in the oceans. The atmosphere, land surface, and cryosphere together account for only a small residual fraction.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is not controversial. It is foundational.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As a result, any claim about whether the Earth\u2019s climate system is warming, cooling, or remaining stable is, in practice, a claim about&nbsp;<strong>ocean heat content<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If we do not know the ocean\u2019s energy state with sufficient epistemic confidence, then we do not know the system\u2019s energy state\u2014no matter how well radiative forcing is understood.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 1: The Absolute Energy Scale of the Ocean<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Let us begin with a physically honest question:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">How much energy does the global ocean contain?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To answer this, we compute the&nbsp;<strong>sensible enthalpy of the ocean referenced to absolute zero<\/strong>, including the energy required to warm ice and melt it. This is not how oceanographers usually frame the problem\u2014but it is how thermal energy is actually defined.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ocean mass<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The mass of Earth\u2019s oceans is approximately:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/wattsupwiththat.com\/wp-content\/uploads\/2025\/12\/image-23.png?resize=232%2C38&amp;quality=75&amp;ssl=1\" alt=\"\" class=\"wp-image-10369293\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Energy components<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To bring the ocean from 0 K to its present mean temperature (~3.5 \u00b0C), three energy terms are required:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Warming ice from 0 K to 0 \u00b0C<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because the heat capacity of ice drops sharply toward zero at low temperature, this term cannot be calculated with a constant. A physically reasonable range yield:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/wattsupwiththat.com\/wp-content\/uploads\/2025\/12\/image-31.png?resize=300%2C38&amp;quality=75&amp;ssl=1\" alt=\"\" class=\"wp-image-10369301\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This term alone carries substantial uncertainty.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Melting ice at 0 \u00b0C (latent heat of fusion)<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/wattsupwiththat.com\/wp-content\/uploads\/2025\/12\/image-32.png?resize=243%2C42&amp;quality=75&amp;ssl=1\" alt=\"\" class=\"wp-image-10369302\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/wattsupwiththat.com\/wp-content\/uploads\/2025\/12\/image-27.png?resize=246%2C38&amp;quality=75&amp;ssl=1\" alt=\"\" class=\"wp-image-10369297\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This term is comparatively well constrained.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. Warming liquid seawater from 0 \u00b0C to ~3.5 \u00b0C<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/wattsupwiththat.com\/wp-content\/uploads\/2025\/12\/image-30.png?resize=219%2C42&amp;quality=75&amp;ssl=1\" alt=\"\" class=\"wp-image-10369300\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This is small compared to the first two terms.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Total ocean sensible enthalpy<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Summing these components:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/wattsupwiththat.com\/wp-content\/uploads\/2025\/12\/image-26.png?resize=321%2C38&amp;quality=75&amp;ssl=1\" alt=\"\" class=\"wp-image-10369296\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A reasonable central estimate is:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/wattsupwiththat.com\/wp-content\/uploads\/2025\/12\/image-25.png?resize=249%2C38&amp;quality=75&amp;ssl=1\" alt=\"\" class=\"wp-image-10369295\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 2: The Uncertainty in That Quantity<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The uncertainty in absolute ocean sensible enthalpy is dominated by:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Low-temperature heat capacity of ice,<\/li>\n\n\n\n<li>Reference-state assumptions,<\/li>\n\n\n\n<li>Simplifications required to compute a planetary-scale integral.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A conservative estimate is:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/wattsupwiththat.com\/wp-content\/uploads\/2025\/12\/image-29.png?resize=243%2C38&amp;quality=75&amp;ssl=1\" alt=\"\" class=\"wp-image-10369299\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This is not a statistical error bar\u2014it is a&nbsp;<strong>structural uncertainty<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 3: The Claimed Signal<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Now compare this with the quantity that underpins modern climate attribution:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Estimated ocean heat uptake over the last ~50 years<\/strong>:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/wattsupwiththat.com\/wp-content\/uploads\/2025\/12\/image-28.png?resize=300%2C41&amp;quality=75&amp;ssl=1\" alt=\"\" class=\"wp-image-10369298\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This is the signal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 4: Putting the Scales Side-by-Side<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here is the comparison that is almost never made explicitly:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Quantity<\/strong><\/td><td><strong>Order of Magnitude (J)<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Absolute ocean sensible enthalpy<\/td><td>~10<sup>27<\/sup><\/td><\/tr><tr><td>Uncertainty in absolute enthalpy<\/td><td>~10<sup>26<\/sup><\/td><\/tr><tr><td>Claimed 50-year ocean heat uptake<\/td><td>~10<sup>23<\/sup><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The ratio is unavoidable:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/wattsupwiththat.com\/wp-content\/uploads\/2025\/12\/image-33.png?resize=439%2C73&amp;quality=75&amp;ssl=1\" alt=\"\" class=\"wp-image-10369303\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The&nbsp;<strong>uncertainty in the ocean\u2019s sensible heat content exceeds the reported signal by roughly three orders of magnitude<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is not a matter of better statistics. It is a matter of scale.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u201cBut We Measure Changes, Not Absolutes\u201d<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At this point, the standard rebuttal appears:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>We do not need to know the absolute heat content. We measure changes.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That sounds reasonable\u2014until one asks what must be true for that to work.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The Wall-Mark Allegory (and Why It Fails)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Imagine measuring the growth of a child without a ruler.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Instead, you make marks on a wall as the child grows taller. Over time, the marks move upward, and you infer growth.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This works&nbsp;<strong>only if two conditions hold<\/strong>:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>You know where the floor is.<\/li>\n\n\n\n<li>The floor is not moving.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">In climate science, the ocean is the wall\u2014and the observing system is the floor.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Condition 1: Knowing where the floor is<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ocean temperature measurements over the last 50\u201370 years come from a sequence of fundamentally different systems:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ship-based mechanical instruments,<\/li>\n\n\n\n<li>Expendable probes with known, evolving biases,<\/li>\n\n\n\n<li>Sparse deep measurements,<\/li>\n\n\n\n<li>A modern Argo float network with different calibration regimes.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Each transition introduces offsets that must be corrected&nbsp;<strong>after the fact<\/strong>, using models.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That means the baseline is not observed. It is inferred.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Condition 2: The floor is not moving<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The floor has been moving continuously:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Instrument types changed,<\/li>\n\n\n\n<li>Sampling depth changed,<\/li>\n\n\n\n<li>Spatial coverage changed,<\/li>\n\n\n\n<li>Correction methods changed.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The reference frame itself has drifted.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You are no longer measuring marks on a fixed wall\u2014you are measuring marks while the floor shifts and tilts, and then reconstructing where the floor&nbsp;<em>must have been<\/em>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A Second Moving Floor: Heat Entering from Below<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The epistemological problem deepens further once the&nbsp;<strong>bottom boundary<\/strong>&nbsp;of the ocean is acknowledged.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The ocean is not heated only from above.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Seafloor heat flux<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Earth\u2019s internal heat flow to the surface is commonly estimated at roughly:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/wattsupwiththat.com\/wp-content\/uploads\/2025\/12\/image-34.png?resize=194%2C40&amp;quality=75&amp;ssl=1\" alt=\"\" class=\"wp-image-10369304\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Integrated over 50 years:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/wattsupwiththat.com\/wp-content\/uploads\/2025\/12\/image-24.png?resize=353%2C38&amp;quality=75&amp;ssl=1\" alt=\"\" class=\"wp-image-10369294\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This is&nbsp;<strong>not negligible<\/strong>&nbsp;relative to claimed multidecadal ocean heat uptake.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Why uncertainty matters more than the mean<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The critical issue is not the global mean flux\u2014it is&nbsp;<strong>where and how the heat enters the ocean<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mid-ocean ridges with intense hydrothermal circulation,<\/li>\n\n\n\n<li>Ridge flanks with poorly constrained low-temperature heat transfer,<\/li>\n\n\n\n<li>Seamounts and submarine volcanoes,<\/li>\n\n\n\n<li>Vast plate interiors filled in by models due to sparse measurements.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The spatial and temporal structure of this heat input is uncertain, heterogeneous, and partially modeled rather than observed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Epistemologically, this means the \u201cfloor\u201d is not merely unstable\u2014it is&nbsp;<strong>actively injecting heat<\/strong>, unevenly, through pathways that are not well constrained at climate-trend resolution.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tightening the Comparison One Last Time<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Put all relevant energy terms together:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Quantity<\/strong><\/td><td><strong>Energy over ~50 years<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Claimed ocean heat uptake<\/td><td>~(3\u20135)\u00d710\u00b2\u00b3 J<\/td><\/tr><tr><td>Seafloor heat input (order)<\/td><td>~7\u00d710\u00b2\u00b2 J<\/td><\/tr><tr><td>Uncertainty in absolute ocean enthalpy<\/td><td>~2\u00d710\u00b2\u2076 J<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This is the full context.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The Epistemological Error<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here is the core issue, stated plainly:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Climate science treats a reconstructed differential signal as if it were a directly observed quantity, even though the signal is orders of magnitude smaller than the uncertainty of the dominant energy reservoir and comparable to poorly constrained boundary fluxes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is a&nbsp;<strong>category error<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In experimental physics or metrology, such a situation would immediately trigger questions about traceability, reference stability, and error dominance. In climate science, it is largely bypassed by redefining the problem in anomaly space and assuming stability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That assumption is not a law of nature. It is a methodological choice.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What This Does\u2014and Does Not\u2014Imply<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This argument does&nbsp;<strong>not<\/strong>&nbsp;show that the Earth is not warming.<br>It does&nbsp;<strong>not<\/strong>&nbsp;show that greenhouse forcing is irrelevant.<br>It does&nbsp;<strong>not<\/strong>&nbsp;show that climate models are useless.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What it does show is this:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">From a strict epistemological standpoint, we do not know\u2014at high confidence\u2014whether the total energy of the Earth\u2019s climate system is increasing, decreasing, or remaining approximately constant.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The dominant reservoir cannot be measured with uncertainty smaller than the claimed change, and one of its boundaries injects heat in ways that are incompletely observed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That matters.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Conclusion<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can measure growth without a ruler\u2014by making marks on a wall\u2014but only if you know where the floor is, and only if the floor is not moving.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In climate science, the floor has moved, the wall has changed, and heat is entering from below through pathways that are not well constrained.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Until those epistemological limits are acknowledged explicitly, claims about the Earth\u2019s energy trajectory remain&nbsp;<strong>inferences<\/strong>, not measurements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That distinction matters.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The central empirical claim of modern climate science is that the Earth system is gaining energy, and that this gain is sufficiently well measured to justify strong conclusions about long-term warming.<\/p>\n","protected":false},"author":121246920,"featured_media":418692,"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":"Understanding Ocean Heat Content: A Key to Climate Science","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":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":true,"token":"eyJpbWciOiJodHRwczpcL1wvaTAud3AuY29tXC9jbGltYXRlLXNjaWVuY2UucHJlc3NcL3dwLWNvbnRlbnRcL3VwbG9hZHNcLzIwMjVcLzEyXC9BUU05aDNvYUxuSS1iUVAyaTJmR0UzUEZjbDVsajVSQmEyTGpPX3NVMV9uTzJEcmVyVmc3c09peVFtaXpKcVNRbi10dHZPeWdZRVlwTDhTSUdpd1h1a3I3VlVQNHJWSG5mUzdlRXBKejRkWFBCZml2VUZfTTBxd1g2OTFBN2c5dS1qelkxODdYeW5yTW5tcERaRVZQaXA0eVd1UnBQQS5qcGVnP2ZpdD03MjMlMkM3MjMmc3NsPTEiLCJ0eHQiOiJNZWFzdXJpbmcgQ2xpbWF0ZSBDaGFuZ2UgV2l0aG91dCBhIFJ1bGVyIiwidGVtcGxhdGUiOiJoaWdod2F5IiwiZm9udCI6IiIsImJsb2dfaWQiOjE1NTgxMjQ0OX0.RU41nVaSKgCN8bUdEakcW7sS283Tv_lF17jyldyEms8MQ"},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691818056,691840333,691828373,691840332],"class_list":{"0":"post-418689","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-climate-change","9":"tag-climate-energy-system","10":"tag-ocean-heat-content","11":"tag-oceans-energy-content","13":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/12\/AQM9h3oaLnI-bQP2i2fGE3PFcl5lj5RBa2LjO_sU1_nO2DrerVg7sOiyQmizJqSQn-ttvOygYEYpL8SIGiwXukr7VUP4rVHnfS7eEpJz4dXPBfivUF_M0qwX691A7g9u-jzY187XynrMnmpDZEVPip4yWuRpPA.jpeg?fit=1280%2C1280&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1KV3","jetpack-related-posts":[{"id":436128,"url":"https:\/\/climatescience.press\/?p=436128","url_meta":{"origin":418689,"position":0},"title":"Another IPCC &#8216;Dog Ate My Homework&#8217; Excuse: Argo Ocean Heat Claims Laid to Rest","author":"uwe.roland.gross","date":"04\/01\/2026","format":false,"excerpt":"Climate data and modeling remain contested on sensitivity, feedback, and attribution details- not the basic greenhouse effect itself. Ongoing scrutiny, better observations, and transparent methods serve science better than any narrative of settled dogma or perpetual hoax.","rel":"","context":"In \"Climate models\"","block_context":{"text":"Climate models","link":"https:\/\/climatescience.press\/?tag=climate-models"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Another-IPCC-Dog-Ate-My-Homework-Excuse-Argo-Ocean-Heat-Claims-Laid-to-Rest1.jpg?fit=800%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Another-IPCC-Dog-Ate-My-Homework-Excuse-Argo-Ocean-Heat-Claims-Laid-to-Rest1.jpg?fit=800%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Another-IPCC-Dog-Ate-My-Homework-Excuse-Argo-Ocean-Heat-Claims-Laid-to-Rest1.jpg?fit=800%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Another-IPCC-Dog-Ate-My-Homework-Excuse-Argo-Ocean-Heat-Claims-Laid-to-Rest1.jpg?fit=800%2C1200&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":435120,"url":"https:\/\/climatescience.press\/?p=435120","url_meta":{"origin":418689,"position":1},"title":"Unfounded IPCC Claims about Rising Ocean Heat\u00a0Content","author":"uwe.roland.gross","date":"03\/29\/2026","format":false,"excerpt":"From Science Matters By\u00a0Ron Clutz Alex Newman reports at Liberty Sentinel\u00a0New Climate Study Debunks Key UN IPCC Dogma. 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Over the oceans, they diagnose the net\u2026","rel":"","context":"In \"Atlantic Multidecadal Oscillation (AMO)\"","block_context":{"text":"Atlantic Multidecadal Oscillation (AMO)","link":"https:\/\/climatescience.press\/?tag=atlantic-multidecadal-oscillation-amo"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0Figure-1-NASA-EEI-scaled-1.webp?fit=1200%2C786&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0Figure-1-NASA-EEI-scaled-1.webp?fit=1200%2C786&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0Figure-1-NASA-EEI-scaled-1.webp?fit=1200%2C786&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0Figure-1-NASA-EEI-scaled-1.webp?fit=1200%2C786&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0Figure-1-NASA-EEI-scaled-1.webp?fit=1200%2C786&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":217389,"url":"https:\/\/climatescience.press\/?p=217389","url_meta":{"origin":418689,"position":4},"title":"The Sun-Climate Effect: The Winter Gatekeeper Hypothesis (VI). Meridional transport as the main climate change driver","author":"uwe.roland.gross","date":"09\/05\/2022","format":false,"excerpt":"\u201cNo philosopher has been able with his own strength to lift this veil stretched by nature over all the first principles of things. Men argue, nature acts.\u201d\u00a0Voltaire (1764)","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/09\/image-256.png?fit=768%2C673&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/09\/image-256.png?fit=768%2C673&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/09\/image-256.png?fit=768%2C673&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/09\/image-256.png?fit=768%2C673&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":207276,"url":"https:\/\/climatescience.press\/?p=207276","url_meta":{"origin":418689,"position":5},"title":"Another Energy Imbalance Paper.","author":"uwe.roland.gross","date":"07\/05\/2022","format":false,"excerpt":"Cam_S writes via email: Kevin Trenberth has a new \u201cenergy imbalance\u201d paper out. CO2 is causing\u2026 Droughtfloods (sic), extreme weather, heatwaves, hurricanes, rising ocean temperatures, sea level rise, and wildfires.Models say so! \u2013 \u2013 \u2013 \u2013 \u2013 \u2013 \u2013 \u2013 \u2013Knowing the Earth\u2019s energy imbalance is critical in preventing global\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/07\/image-39.png?fit=1024%2C512&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/07\/image-39.png?fit=1024%2C512&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/07\/image-39.png?fit=1024%2C512&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/07\/image-39.png?fit=1024%2C512&ssl=1&resize=700%2C400 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/418689","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=418689"}],"version-history":[{"count":5,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/418689\/revisions"}],"predecessor-version":[{"id":418695,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/418689\/revisions\/418695"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/media\/418692"}],"wp:attachment":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=418689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=418689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=418689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}