Ice Age Discoveries Cool Down Climate Change Alarms

This artist’s rendition shows woolly mammoths in northern Spain. These animals lived in Europe and North America during the last glacial period, around 21,000 years ago. A new study used updated climate maps from that period, when atmospheric carbon dioxide was lower, to better predict future warming under rising CO2. Credit: Mauricio Anton

The left panel shows the sea surface temperature map during the most recent ice age, 21,000 years ago, compared to modern preindustrial temperatures. This new, more detailed analysis shows that the strong cooling over the northern oceans, caused by the North American ice sheet, contributed substantially to total global cooling.

Researchers including co-author Gregory Hakim, a UW professor of atmospheric sciences, have created new statistical modeling techniques that allow paleoclimate records to be assimilated into computer models of Earth’s climate, similar to today’s weather forecasting models. The result is more realistic temperature maps from previous millennia.

المملكة العربية السعودية أحدث الأخبار, المملكة العربية السعودية عناوين

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Drowned land off Australia was an Aboriginal hotspot in last ice age, 4,000 stone artifacts revealEmma Bryce is a London-based freelance journalist who writes primarily about the environment, conservation and climate change. She has written for The Guardian, Wired Magazine, TED Ed, Anthropocene, China Dialogue, and Yale e360 among others, and has masters degree in science, health, and environmental reporting from New York University.
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