20 Facts About Global Warming

Certain gases in the atmosphere block heat from escaping. The year 2020 ties with 2016 as the warmest on record.

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Current news and data streams about global warming and climate change from NASA.

20 facts about global warming. Action until after we start to see dangerous impacts from global warming. Even if emissions were eliminated today it would take centuries for the heat-trapping GHGs now in the atmosphere to fall to. Most come from the combustion of.

Loss of sea ice accelerated sea level rise and longer more intense heat waves. One of the first things the IPCC concluded is that there are several greenhouse gases responsible for warming and humans emit them in a variety of ways. Effects that scientists had predicted in the past would result from global climate change are now occurring.

Global Climate Change and Global Warming. Scientists attribute the global warming trend observed since the mid-20 th century to the human expansion of the greenhouse effect 1 warming that results when the atmosphere traps heat radiating from Earth toward space. Vital Signs of the Planet.

This has been confirmed through technological means such as satellites to capture images. In fact 97 of climate scientists agree that global warming is a result of human activity. A graph and an animated time series showing the change in global surface temperature relative to 1951-1980 average temperatures.

Two-thirds of the warming has occurred since 1975 at a rate of roughly 015-020C per decade. Global warming is the term used to describe a gradual increase in the average temperature of the Earths atmosphere and its oceans a change that is believed to be permanently changing the Earth. Global warming cannot be halted quickly.

In the last 1300 years the warming of the Earth has sped up at a greater rate. Glaciers have shrunk ice on rivers and lakes is breaking up earlier plant and animal ranges have shifted and trees are flowering sooner. CO 2 and other GHGs can remain in the atmosphere for many centuries.

Global climate change has already had observable effects on the environment. These human-produced temperature increases are commonly referred to as global warming. According to an ongoing temperature analysis conducted by scientists at NASAs Goddard Institute for Space Studies GISS the average global temperature on Earth has increased by a little more than 1 Celsius 2 Fahrenheit since 1880.

Natural processes can also contribute to climate change including internal variability eg cyclical ocean patterns like El Niño La Niña and the Pacific Decadal Oscillation and external forcings eg volcanic activity changes in the Suns energy output variations in Earths orbit.

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