November 8, 2022, CAIRO Unquestionably, since the middle of the 20th century, the rate of climate change has been unprecedented over thousands of years for a number of reasons, chief among which are the rising rates of fuel burning, logging, and environmental pollution.
In the past 800,000 years there have been eight cycles of ice ages and warmer periods, with the last ice age ending about 11,700 years ago.
Marking the beginning of the modern climate era, most of these climate changes are attributed to tiny differences in the Earth’s orbit that alter the amount of solar energy our planet receives.
NASA claims that the current warming trend is distinct because it has been clearly caused by human activity since the middle of the 19th century and is occurring at a rate that has not been seen in the previous millennia.
There is no denying that atmospheric gases produced by human activities have helped to trap more solar energy within the Earth’s system. Large-scale and quick changes have taken place in the atmosphere, oceans, cryosphere, and biosphere as a result of this additional energy, which has warmed the atmosphere, oceans, and land.
Earth-orbiting satellites and new technologies have helped scientists see the big picture and collected different kinds of information about our planet and its climate around the world.
These long-term data collections show patterns and signs of a changing climate.
In the middle of the 19th century, scientists showed that carbon dioxide and other gases have a warming effect. The scientific tools that NASA used to study our climate focused on how these gases affect the movement of infrared radiation through the atmosphere.
There is no question that rising levels of greenhouse gases are warming the Earth in response, as evidenced by the measured effects of increases in these gases.
The Earth’s climate responds to changes in greenhouse gas concentrations, as evidenced by ice core samples from Greenland, Antarctica, and tropical mountain glaciers.
Ancient evidence can also be found in tree rings, ocean sediments, coral reefs, and sedimentary rock layers.
Paleoclimate research shows that the current rate of warming is roughly ten times greater than the average postglacial warming rate. Carbon dioxide from human activities is also increasing at a rate about 250 times faster than it was from natural sources after the last Ice Age..
Why has climate change gained significance?
About Author
