{"id":278939,"date":"2023-09-15T21:29:30","date_gmt":"2023-09-15T19:29:30","guid":{"rendered":"https:\/\/climatescience.press\/?p=278939"},"modified":"2023-09-15T21:29:34","modified_gmt":"2023-09-15T19:29:34","slug":"have-sea-level-rise-data-been-faked-altimetry-corrects-non-trends-to-show-rapid-acceleration","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=278939","title":{"rendered":"Have Sea Level Rise Data Been Faked? Altimetry \u2018Corrects\u2019 Non-Trends To Show Rapid Acceleration"},"content":{"rendered":"\n
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From NoTricksZone<\/a><\/p>\n\n\n\n

By\u00a0Kenneth Richard<\/a>\u00a0on\u00a0<\/em>14. September 2023<\/p>\n\n\n\n

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A stable current global sea level record has apparently been \u201ccorrected\u201d to show accelerated rise since the 1990s.<\/mark><\/em><\/strong><\/p>\n\n\n\n

A few months ago we highlighted a new study<\/a><\/strong> indicating satellite observations reveal Antarctic-wide ice shelves gained<\/em> +661 Gt of mass from 2009 to 2019.<\/p>\n\n\n\n

Instead of reporting on these actual observations, agenda-driven scientists have long been using an approach relying on assumptions<\/em> of an unrealistic \u201csteady state\u201d or fixed calving flux (instead of real-world time-variable observations). An assumption-based assessment approach allows estimates a net Antarctic ice shelf change to go from a +661 Gt mass gain to a -20,028 Gt mass loss over this 11-year period (Andreasen et al., 2023<\/a><\/strong>).<\/p>\n\n\n\n

This is a more than 30-fold distortion of what actual observations indicate.<\/p>\n\n\n\n

\u201cCorrecting\u201d stable sea levels to show accelerated rise<\/strong><\/p>\n\n\n\n

A few years ago Australian scientists exposed a similar assumption-based assessment approach<\/strong><\/a> in estimating trends in global sea level change.<\/p>\n\n\n\n

According to long-term global tide gauge data (from the 100 tide gauges with more than 80 years of continuous data), sea levels have been gradually rising at rates of about +0.25 mm\/year with no perceptible acceleration since the early 20th century.<\/p>\n\n\n\n

Likewise, when satellite altimeters were originally deployed in the 1990s to early 2000s they consistently did \u201cnot show any sea level rise.\u201d<\/p>\n\n\n\n

A lack of sea level rise didn\u2019t advance the narrative, of course.<\/p>\n\n\n\n

So instead of reporting on what the actual satellite observations showed, arbitrary, subjective assumptions were employed to \u201ccorrect\u201d the data to show sea levels have been rising at rates of 3.2 mm\/year instead.<\/p>\n\n\n\n

The GMSL satellite altimeter data showed no rising trend for the first 5 years of the record. The first 5 years were then \u201ccorrected\u201d to show +2.3 mm\/year of sea level rise.<\/p>\n\n\n\n

The GRACE satellite data showed the was a -0.12 mm\/yr sea level fall trend from 2003 to 2008. After \u201ccorrection,\u201d this was changed to a +1.9 mm\/year sea level rising trend.<\/p>\n\n\n\n

\u201c\u2026the untampered results, not showing the desired sea level rise, were replaced by \u2018corrected\u2019 results. [U]ntil August 4, 2011 the European Space Agency\u2019s Envisat satellite was showing less than +0.976 mm\/year sea level rise since 2004. A few months later, thanks entirely to further corrections, the same data set showed +2.97 mm\/year of sea level rise.\u201d<\/em><\/p>\n\n\n\n

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Image Source:\u00a0Parker and Ollier, 2016<\/strong><\/a><\/figcaption><\/figure>\n\n\n\n

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