The average global temperature during the last ice age 20,000 years ago was 7 degrees Celsius. The lowest average was minus 11. Researchers from the U.S. have made this crucial discovery by combining data from small marine fossils with climate models to predict the weather, known as the Last Glacial Maximum (LGM). During that cold period, the Earth’s glaciers and glaciers spread across half of Europe, North America and South America and into Asia, the study said.
These findings will help experts understand the relationship between changes in the amount of carbon in the atmosphere and global warming, and to predict future climate change. But one question that science has long sought to answer is simple: How cold was the ice age?
To answer this question, scientists analyzed a number of marine debris. Preserves evidence of sea surface temperature during their lifetime. They then combined this data with climate simulations of the final glacial maxim, a technology used by weather forecasters known as ‘data assimilation’. These measurements are used to measure temperature, pressure, and humidity and to update the forecast model and forecast the weather. In addition to predicting average global temperatures, researchers have created maps to show how figures vary in different parts of the world.
Various maps were created to illustrate how temperature differences vary in specific regions around the world. The northernmost parts of North America and Europe were snowy and very cold. But the greatest cooling was at higher latitudes, such as the Arctic, where it was minus 14 degrees colder than it is today.
Scientists have also found that climate models predict that higher latitudes will heat up faster than lower latitudes. Looking at future forecasts, it will be warmer than in the Arctic. This is called polar amplification.
If we can recreate the warmer climates of the past, we will be able to answer important questions about how the earth reacts to high carbon dioxide levels, explained Professor Tierney, who is leading the study. Knowing the Earth’s temperature during the last glacial period allows researchers to better understand climate sensitivity.
The team concluded that global temperatures would rise to 6.1 Fahrenheit when the amount of carbon in the atmosphere doubles. During the last ice age, the amount of carbon dioxide in the atmosphere was 180 parts per million, but today it has risen to 415 parts per million.