Antarctic glaciars began melting in the 1940s

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https://www.cnn.com/2024/02/26/climate/doomsday-glacier-antarctic-ice-melt-climate-intl/index.html

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So, they’ve been doing studies like this for how long now? Since long before “global warming” and climate change" became buzz words. And just this week “a new study” discovers something convenient for their cause. At what point in the past or the future, I’ll settle for either, will they reach a point where we can trust anything they say? If I’m not mistaken the Antarctic has not shown any warming is 40 years.

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Carbon dioxide is Earth’s most important greenhouse gas: a gas that absorbs and radiates heat . Unlike oxygen or nitrogen (which make up most of our atmosphere), greenhouse gases absorb heat radiating from the Earth’s surface and re-release it in all directions—including back toward Earth’s surface.

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Over the past 50 years, the west coast of the Antarctic Peninsula has been one of the most rapidly warming parts of the planet. This warming is not only restricted to the land but can also be noted in the Southern Ocean. Upper ocean temperatures to the west of the Antarctic Peninsula have increased over 1°C since 1955 .

Why are ocean temperatures getting warmer?

Climate Change: Ocean Heat Content | NOAA Climate.gov

Rising amounts of greenhouse gases are preventing heat radiated from Earth’s surface from escaping into space as freely as it used to. Most of the excess atmospheric heat is passed back to the ocean. As a result, upper ocean heat content has increased significantly over the past few decades.

Better graph of that above graph

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Then you are mistaken. But then you really don’t care to be informed.

JimA

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You can be sick for years before showing any symptoms.

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intercst

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How have you missed the world wide science news about Antarctic warming during the last 25 years?

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Singh and Polvani write "The Antarctic continent has not warmed in the last seven decades, despite a monotonic increase in the atmospheric concentration of greenhouse gases.
https://www.nature.com/articles/s41612-020-00143-w

But not since the turn of the century. Sancho et al. write “The Antarctic Peninsula has had a globally large increase in mean annual temperature from the 1951 to 1998 followed by a decline that still continues.”
https://www.nature.com/articles/s41598-017-05989-4
DB2

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Lots of stuff being conflated on this thread, which gives the impression of a lot of conflicting information. That isn’t true, in fact the story at Antarctica is becoming increasingly more clear. Here are the facts as I know them.

  1. The world is warming on average corresponding to the continuous rise in CO2 levels, but it is not doing so evenly. This is particularly true at the Poles where the Arctic is warming rapidly while Antarctica at the continent level is not showing significant changes in temperature.

  2. A small segment of Antarctica called the Antarctic peninsula has shown significant warming since the 1950s, with a short pause (as recorded in a subset of stations) from 1999-2016. Record warming in this region has since returned with a vengeance.
    Record-high Antarctic Peninsula temperatures and surface melt in February 2022: a compound event with an intense atmospheric river | npj Climate and Atmospheric Science.

  3. The melting of the Antarctica ice shelf is mostly due to the warming of the Southern Ocean, not local air temp.

  4. The reason why the Thwaites glacier was only recently found to have been melting since the 1940s is because sediment cores from calving front of the glacier were only recently obtained.

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