132. Latest Climate Change Info: Simplified

29 Dec

It is vital that our government supports climate change programs.The dangers are serious and some harmful effects are already happening. Helping people and leaders to understand the science is my contribution. Here are the fundamentals, briefly:

Light from Sun >> Heats earth >> Heat energy Rises /\ /\  from earth
Some rising heat is blocked ]]]] from escaping by gases like CO2
Burning fuel increases CO2 causing more ]]]]]] blockage & warmth

More Detail:
Light from the Sun passes through our atmosphere and warms our planet. The resulting heat rises and some is blocked from escaping into space by “greenhouse” gases: carbon dioxide (CO2), methane, water, and others. Small quantities of these gases are naturally in the atmosphere, and the amount is relatively stable.

But when we burn fuel and create more heat-blocking CO2, there is excessive planet warming. CO2 and other “greenhouse gases” are like a blanket around our planet. See below for more scientific detail.

How do we know that planet warming is caused by human activity?
1, The carbon dioxide emitted by burning coal, natural gas, and oil has a unique chemical pattern — and the additional CO2 in the atmosphere bears that signature. (See below for more detail.)

2. The CO2 and warming are closely correlated with the history of the industrial revolution, which involved the burning of coal and gasolene. As the usage of fossil fuels increased, the warming increased. During the history of the Earth, there were temperature cycles, but these natural cycles are very much slower than the current rapid temperature warming. No other “natural” factors could have caused this increase. See this NASA reference for actual data:  https://climate.nasa.gov/evidence/

What are the dangers of global warming? Warming causes arctic and other northern ice to melt. This is already well established by photographic evidence. The consequence is warmer oceans, rising sea levels, and changes in ocean currents.

The warming of oceans increases the strength of hurricanes. In recent years, hurricanes are worse than before. Changes in ocean currents shift land temperatures and rainfall so that some lands (like California) are drier and other places are flooded. Inhabited land that is close (or even less than) sea level is starting to flood, due to a slight rise in sea level. A good example is flooding in Venice, Italy, where the sea level has consistently risen by a total of 26cm since 1870. Many highly populated coastal areas of the USA are vulnerable. Some ocean islands are no longer habitable.

Scientists have spent thousands of hours recording and studying these factors. All of these facts are published in reputable scientific journals and magazines, such as Scientific American and Science. All reputable scientists support these findings. A recent official government report and NASA report supports all these facts. Politicians sometimes dispute these facts because their donors might need to spend money to correct their operations. Scientists are not political with respect to science.
—————
Added scientific clarifications
Rising heat energy (infrared radiation) is effectively  “blocked” by CO2 and other greenhouse gases. Most of our atmosphere consists of oxygen and nitrogen, which are small molecules and have little effect on rising heat. Greenhouse gases like CO2 have larger molecules and can absorb heat energy. Shortly after absorption, the heat energy is re-emitted in any direction. The part that goes downward tends to warm the earth. Long before humans inhabited the Earth, greenhouse gases were in the atmosphere at an almost fixed level as a result of opposing processes that produced an equilibrium. These gases warmed the Earth enough to make it habitable for humans and other animals. Burning fuels has increased the heat, causing harmful effects.

CO2 from fuel burning can be identified because it contains tiny amounts of certain inert (noble) gases, Other “natural” CO2 has a different pattern of these inert gases. This is often referred to as a “fingerprint.

Scientists have been working diligently on the problem of added global warming. There are basically two types of solution:  1. Reduce the burning of fuels by producing alternative energy like windmills and solar arrays, and 2. Develop industrial processes for removing greenhouse gases from the atmosphere. Number 1 is already in major use. Number 2 is being developed by researchers, but the effectiveness is not yet known . Our gov needs to support BOTH of these efforts, trying to remove CO2 (etc) from the atmosphere will not be enough.

Valuable References
Here is a scientific reference on CO2 effects
https://scied.ucar.edu/carbon-dioxide-absorbs-and-re-emits-infrared-radiation
 Bibliographies for climate change (here are 2 of many):
https://www.fs.usda.gov/ccrc/library/biblio (USA Forest Service)
http://www.nyulawglobal.org/globalex/Climate_Change_Bibliography1.html  Government Report: https://nca2014.globalchange.gov/report
 NASA info:  https://climate.nasa.gov/evidence/  (this is excellent)

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: