Scientists ‘Unexpectedly’ Find The Declining Sea Ice Trend Since 1980 Has Radiatively Cooled The Earth
By Kenneth Richard on 31. March 2025
The alarmist narrative that says disappearing sea ice serves to enhance and worsen global warming may now be discarded.
For decades it has been assumed the sea ice concentration (SIC) reduction trend in the the Arctic over the first 30 years of the satellite era (1979-2007, with a flat trend since then) would lead to a precipitous decline in reflective albedo. Consequently, with more open water rather than brightly reflective ice, the Arctic would perpetually warm even more than it already has.
But now, according to analysis found in a new Science Advances study, this assumption may no longer be valid.
Image Source: Zhou et al., 2025
The global top of atmosphere (TOA) radiative effect of SIC changes, Δ𝑅, is dependent not just on SIC trends in the Arctic, but on SIC trends in Antarctica as well. The Southern Hemisphere’s SIC has been increasing throughout most of the satellite era, especially from 1979 to 2015.
Globally, then, the Δ𝑅 of Antarctic SIC gains asymmetrically offsets the Δ𝑅 stemming from Arctic SIC reduction due to SIC-induced albedo feedback processes. Thus, the modern era global SIC trends have served to “cool Earth.”
https://notrickszone.com/2025/03/31/scientists-unexpectedly-find-the-declining-sea-ice-trend-since-1980-has-radiatively-cooled-the-earth/
