11/4/2023 0 Comments Reversibly precipitate definitionHere’s how the science arrived at this place.įirst, it’s important to understand the main forces affecting climate. One scientific study put it this way: The odds of current global warming occurring without human-caused greenhouse gas emissions are less than 1 in 100,000. They’ve reached an overwhelming consensus: The burning of fossil fuels by humans is the primary cause of global warming today.Įven scientists employed by oil companies have come to this conclusion. Over many decades, thousands of scientists have studied the warming planet. Read more: The Science of Climate Change Explained: Facts, Evidence and Proof Botanists see similar signs of the effects of climate change on crops, forests and other vegetation. Ornithologists, for instance, have shown that warming is affecting many bird species - changing when they nest, breed and migrate, and even where they are able to live and thrive. Scientists doing field research around the world have documented other effects of climate change. Rainfall data shows that heavy downpours have increased in the United States and elsewhere, because warmer air holds more moisture.Īnd not all of the evidence comes from instruments. Satellites that measure gravitational changes show that trillions of tons of ice have melted from the world’s ice sheets and glaciers. Tide gauges and other instruments show that sea levels have risen by about half an inch per decade since 1900 (mostly because water expands as it warms). There is also plenty of evidence showing the consequences of this warming. The oceans have absorbed much of the heat trapped in the atmosphere. Temperatures in the top layer of the world’s oceans have increased as well. And the rate of warming has accelerated in recent decades. On average, surface temperatures are 1.2 degrees Celsius (2.2 degrees Fahrenheit) warmer than a century and a half ago. The most basic measurements of temperature show that the world has been steadily getting warmer. This evidence is largely in the form of data from weather stations, buoys, ships, satellites and other sources. There’s overwhelming evidence that the world has been warming since the late 19th century, when the burning of fossil fuels became widespread and resulted in large-scale emissions of heat-trapping carbon dioxide into the atmosphere.
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