Post No. 7. Global Warming
“Global Warming is also referred to as climate change, is the observed century-scale rise in the average temperature of the Earth’s climate system and its related effects.”

In 2013, the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report concluded that “It is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century.” The largest human influence has been the emission of “greenhouse gases” such as carbon dioxide, methane and nitrous oxide.

Future climate change and associate impacts will differ from region to region. Anticipated effects include increasing global temperatures, rising see levels, changing precipitation, and expansion of deserts in the subtropics. Warming is expected to be greater over land than over the oceans and greatest in the Arctic, with the continuing retreat of glaciers, permafrost and sea ice. Other likely changes include more frequent extreme weather events such as heat waves, droughts, heavy rainfall with floods and heavy snowfall, ocean acidification; and species extinctions due to shifting temperature regimes. Effects significant to humans include the threat to food security from decreasing crop yields and the abandonment of populated areas due to rising sea levels. Because the climate system has a large “inertia and greenhouse gases will remain in the atmosphere for a long time, many of these effects will persist for not only decades or centuries, but for tens of thousand of years to come.

The greenhouse effect is the process by which absorption and emission of infrared radiation by gases in a planet’s atmosphere warm its lower atmosphere and surface. It was proposed by Joseph Fourier in 18245, discovered in 1860 by John Tyndall,was first investigated quantitatively by Svante Arrehenius in 1896, and its scientific description was developed in the 1930s through 1960  by Guy Stewart Callendar.

Human activity since the Industrial Revolution has increased the amount of greenhouse gases in the atmosphere, leading to increased radiative forcing from CO2. methane, tropospheric ozone, CFCs and nitrous oxide. According to  work published in 2007,  the concentrations of CO2 and methane had increased by 36% and 148% respectively  since 1750.” (Wikipedia)

“Choose your favorite analogy. Global warming is pumping energy into our climate at the rate of:
  • 4 atomic bombs a second
  • 36 Hurricane Irmas blasting non-stop
  • 13 times all global enegy uses.
We don’t want all that global warming heat because it is supercharging droughts, floods, storms, wildfires, sea levels and heat waves. Plus it’s causing general ecological havoc by shiftingclimate zones faster than many plants and animals can keep up.”(Barry Saxifrage in Analysis, Energy I October 11th 2017)

“The potential future effect of global climate change include more frequent wildfires, longer period of drought in some regions and an increase in the number, duration and intensity of tropical storms…Global climate change has already had observable effects on the environment.” (NASA)
https://climate.nasa.gov/

Another related video is as follow:
https://www.nytimes.com/interactive/2015/11/28/science/what-is-climate-change.html

Climate changes are real. Greenhouse effects have dramatically increased. Around the world there is concern about the increase in the intensity of natural disasters and dramatic changes in climate.

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