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better to know...?, climate-debate

Ocean Temperatures and Climate Hysteria: A Lesson in Perspective

by C. Rotter, Dec 20, 2024 in WUWT

For the past two years, headlines, policy statements, and social media feeds have been flooded with dire warnings about rising ocean temperatures. Every uptick in the graphs was treated as irrefutable proof of humanity’s march toward ecological collapse. The news cycle offered little room for nuance, and as usual, the loudest voices declared the end was nigh. But a recent tweet from Javier Viños, supported by a graph of global sea surface temperatures (SST), reminds us how quickly climate “emergencies” dissolve when confronted with even the faintest hint of natural variability.

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better to know...?, climate-debate

Study Debunks Media’s Iceberg Alarmism: Antarctic Calving ‘Statistically Unexceptional’

by A. Watt,  Dec 20, 2024 in ClimateChangeDispatch

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The climate chicken littles of the media blamed it on climate change then, but today, it looks like an Emily Litella moment has just occurred, as a new peer-reviewed scientific study says it wasn’t anything abnormal, nor should we worry about it.

The new study published in Geophysical Research Letters tosses ice-cold water on those overhyped media claims.

In the study, MacKie et al. (2024) analyzed 47 years of observational satellite data from Antarcticaand found that there has been no trend in annual Antarctic maximum calving size between 1976 and 2023.

The key findings of the study are:

  • There has been no detectable upward trend in the annual maximum iceberg area in Antarctica since 1973, based on satellite measurements.
  • The break-off of Iceberg A-68 from the Larsen C Ice Shelf was not statistically notable.
  • Calving events several times larger than anything observed in the modern record could occur, and still, it would not necessarily be due to climate change.

To be clear, the calving of the A-68 iceberg was “statistically unexceptional” in the historical satellite record. Let that sink in. The authors write:

This finding suggests that extreme calving events such as the recent 2017 Larsen C iceberg, A-68, are statistically unexceptional and that extreme calving events are not necessarily a consequence of climate change.

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climate-debate

Another Climate Sensitivity Study Finds Doubling CO2 Leads To 0.5°C Warming At Most

by K. Richard, Dec 20, 2024 in NoTricksZone

The evidence that rising CO2 concentrations lead to inconsequential warming keeps piling up.

In a new study, seven Viennese researchers provide more evidence the CO2 absorption band is already saturated at today’s concentrations (over 400 ppm). Rising CO2 levels thus cannot drive significant global warming.

“Data from ground measurements indicate that the downward (backward) radiation of the atmosphere shows indeed full saturation of the IR CO2 bands and does not support noticeable additional Thermal Forcing (TF) by increasing CO2 in the lower atmosphere.”

“…we can expect full saturation already at current concentrations.”

As Table 2 from the study indicates, doubling CO2 from pre-industrial levels (280 to 560 ppm) increases global mean infrared absorption by just 1.1% (82.1% vs. 83.2%). This is an indicator of the decreasing effectiveness of CO2 as a warming agent as its concentration rises.

Indeed, a 400 to 800 ppm increase “shows no measurable increase in the IR absorption for the 15 μ-central peak,” and thus it can lead to just 0.5°C warming at most.

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