Demonstration findings in a new study published in the journal npj Climate and Atmospheric Sciences have had a strong impact on winter weather in Europe and the northeastern United States. In the next decade, winters may become warmer and humid: since The last 50 years since the North Atlantic Oscillation can be traced back to human activities that have an impact on the climate system.”
Humans directly affect the climate and weather conditions of the earth mainly through burning fossil fuels, deforestation and intensive animal husbandry, and other activities, resulting in an increase in the concentration of carbon dioxide (CO2) and other pollutants on the earth.
Impact on the North Atlantic climate system
New examples of the man-made origins of climate change come from npj Climate and Atmospheric Science Researchers from the Rosenstiel School of Ocean and Atmospheric Sciences at the University of Miami provide evidence on the effects of human behavior Oscillation in the North AtlanticIt is a phenomenon on which most of the European climate and the east coast of the United States depend.The research team pointed out that the changes in the North Atlantic Oscillation in the past 50 years may be Trace back to human activity Have an impact on the climate system”In this study, we proved that humans are influencing Atlantic weather and climate model And we may be able to use this information to predict changes within ten yearsJeremy Klavans explained that the corresponding author of the book and the first signatory.
The North Atlantic Oscillation, also known as the acronym NAO, comes from the English “North Atlantic Oscillation”. It is a mode of atmospheric circulation whose behavior is determined by pressure fluctuations in the North Atlantic.In turn, this phenomenon will affect The strength and position of the jet, Has a significant impact on the winter weather in Europe, Greenland, the northeastern United States and North Africa, as well as the crop quality and productivity of the North Atlantic fisheries.
Through a series of simulations using several large-scale climate models compiled by researchers from the National Center for Atmospheric Research, the researchers observed the changes in the North Atlantic Oscillation in recent decades and predicted what The impact of human behavior There is a time scale of nearly ten years in the atmospheric circulation system.
The identification of this predictable component obtained through the analysis of 269 model series or simulation models over 14,000 years shows that the winter They may get hot and humid In Europe and the eastern United States. Especially in winter, when the pressure difference is higher than the average level, climatologists say that the NAO index is positive, stronger than the usual subtropical high pressure center, and the minimum value in Iceland is more obvious. “Increase in pressure difference -Indicate the author of the study- This resulted in a more severe winter storm, which traversed the Atlantic on a further northerly route. This leads to warmer and humid winters in Europe, while winters in northern Canada and Greenland become colder and dry.On the other hand, the winter climate in the eastern United States is relatively mild and humid.“.