After each of their spectacular forecast fails, climate experts keep trying to change the rules. But the whole thing started with Hansen’s 1984 paper where he explained how feedbacks were going to destroy the planet.
Hansen predicted that loss of sea ice, particularly in the Southern Hemisphere, was going to lead to 8C warming in the Weddell Sea
Snow /ice feedback.
Ground albedo decrease also provides a positive feedback. The ground albedo change (upper panel of Fig. 7) is largely due to reduced sea ice. Shielding of the ground by clouds and the atmosphere (middle panel of Fig. 7) makes this feedback several times smaller than it would be in the absence of the atmosphere. However, it is a significant positive feedback and is at least as large in the Southern Hemisphere as in the Northern Hemisphere. The geographic pattern of the temperature increase (Fig. 4) and the coincidence of warming maxima with reduced sea ice confirm that the sea ice effect is a substantial positive feedback.
So how did that turn out? A complete disaster. The Weddell Sea has seen peak sea ice gain and the area has cooled.
Hansen predicted peak warming and sea ice loss in an area which has cooled and seen peak sea ice gain. These people are complete hacks and have absolutely no idea what they are doing.