Vestantarktis smelter ikke - en løgnagtig påstand

Det er ofte fremført, at afsmeltningen af Vestantarktis, hvor den Antarktiske Halvø findes, går særligt hurtigt og truer med enorme havstigninger i den nære fremtid. Det er jo også på spidsen af halvøen, at man måler "rekordhøje" temperaturer.

Imidlertid viser artiklen her, at Antarktis snarere har forøget sin samlede mængde af indlandsis og dermed bidraget til en formindskelse af de globale havstigninger. De store bræer i Vestantarktis er ikke truet af høje lufttemperaturer. Til gengæld er der vulkansk aktivitet under isen, og det kan forklare, at bræerne sommetider rører på sig.

Generelt er temperaturerne i Antarktis, som har været konstante de sidste 40 år, langt under frysepunktet og medfører derfor ingen smeltning af sne og is.

A study made by a group of scientists in 2020, found that in the years 1989 - 2018 the south pole had warmed by 1.8°C, three times more that the global average. From this warming 0.8°C is due to natural cycles that can cause after similar cooling, but 1.0°C is from Climate Change.[18]

Unlike the Arctic, which has been warming at a breakneck speed for decades now, Antarctic climate change has been notoriously difficult to map out. Different regions of the same continent often have experienced vastly different climate trends at the same time.

While the South Pole was cooling in previous decades, for instance, much of West Antarctica and the Antarctic Peninsula — hundreds of miles away — was warming and melting. More recently, as the South Pole has begun to heat up, the warming trend on the peninsula has declined.

Similarly, Antarctic sea ice has exhibited some puzzling trends.

The mass of the Antarctic ice sheet has changed over the last several years. Research based on observations from NASA's twin NASA/German Aerospace Center's twin Gravity Recovery and Climate Experiment (GRACE) satellites indicates that between 2002 and 2016, Antarctica shed approximately 125 gigatons of ice per year, causing global sea level to rise by 0.35 millimeters per year.

These images, created with GRACE data, show changes in Antarctic ice mass since 2002. Orange and red shades indicate areas that lost ice mass, while light blue shades indicate areas that gained ice mass. White indicates areas where there has been very little or no change in ice mass since 2002. In general, areas near the center of Antarctica experienced small amounts of positive or negative change, while the West Antarctic Ice Sheet experienced a significant ice mass loss (dark red) over the 14-year period. Floating ice shelves whose mass GRACE doesn't measure are colored gray.

Accelerating mass loss from land ice
Mass loss is accelerating (Figure 12), with changes in ocean melt driving recession in Antarctica, increased ice discharge and surface melt driving changes in Greenland, and negative surface mass balances largely driving glacier recession worldwide. Losses from Greenland are now the most significant contributor to global sea level rise (this includes the peripheral glaciers around the ice sheet), recently overtaking glaciers as the largest contributor.

kfl skrev:
Hvad var årsagen til at Karl Iver Dahl Madsen forlod Klimarealisterne?

Var det kemien, der ikke stemte i bestyrelsen ?

Var det forskellen mellem hans "høje videnskabelige standard" og det vås, der fremgår af Klimarealistene hjemmeside, der var årsagen ?