Home > Politics, News & Issues > Environmental Issues > Climate Change
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| Real | 53% | 1543 votes | Total: 2926 votes | |
| Hoax | 47% | 1383 votes |
Real
Created on: April 24, 2010 Last Updated: April 25, 2010
Climate change, Global Warming, complicated and often confusing subjects, are the premise for many unwarranted debates. One common misunderstanding that should be clarified is that weather is not climate. Weather is chaotic and changes from day by day, minute by minute. Climate is a longer look. No less than 30 years should be used to view any types of trends in a climate conversation.
Climate allows for a broader picture, whereas weather is more like a single point on a mosaic, making it hard to see the whole picture up close, but when you step back and view it as a whole, the picture becomes clear, all the points lining up to form a single image.
The single image represents climate. In this case, it shows unnatural increases of green house gases since the industrial revolution and rising temperatures.
There are, of course, natural cycles that the world has gone through over long periods of time, some up and some down, even since humans have been alive. There is no debate over naturally occurring climate change. Many natural events occur and have occurred for millennium, most recently a volcanic eruption near Iceland.
The difference is that as far back as scientists can trace, some 800,000 years through ice-cores from the arctic, CO2 has never been so high in the atmosphere. Through the same type of analysis that is used on the rings of a tree, scientists can determine that as CO2 increases, temperatures do as well.
CO2 is not the single determining factor, but as climate change is a complex issue, it is the easiest to understand and follow. CO2 is also one of the major factors human activity has significantly increased in our atmosphere.
The concern is not that of the natural cycle of climate change, but the effects of human activity to alter the natural cycle, in this case, creating a global warming effect by increasing the amount of heat trapping gases in the atmosphere known as green house gases (GHG).
To my knowledge there is no debate on whether or not CO2 and other GHG's trap heat, therefore, it is illogical to think that somehow releasing mass amounts of these GHG's into the atmosphere over a hundred years would not increase the warming effect, resulting in a warming planet.
There is talk that the warming effect is because of the sun, but unfortunately, as NASA recently proved, it is absolutely not a result of solar activity. The stratosphere, which is closer to space than the atmosphere is actually cooling, whereas the atmosphere is warming. If solar activity was part of the problem then you would see both “spheres” warming.
If the measurements of the temperatures across the planet rising is not enough to convince, perhaps the physical changes are. The rapidly melting glaciers in our coldest regions of the earth are what some would call an alarm of a warming planet.
As temperatures rise, the glaciers melt and as the glaciers melt, they begin to melt faster because there is less ice to reflect sunlight, which results in surrounding areas to absorb more heat, enhancing the warming effect. It's a chain reaction type of effect and if unchecked could quickly become a problem that we, as humans, can no longer control.
Significant melting glaciers in Iceland and the Arctic result in multiple global problems. One of the major problems is often talked about and that is of rising sea levels. If the glaciers continue to melt many parts of the world will slowly begin to be submerged.
One of the most well known places where sea level rise is already of enormous concern is a set of islands called the Maldives. Sea rise has the potential to displace hundreds of millions of people across the world if both the arctic and Iceland glaciers continue to rapidly melt. This includes States in the United States and major cities, such as New York City.
Another major factor that is only recently starting to be discussed more openly is the release of methane that is trapped beneath the ice shelves that are melting. Methane is another GHG, which is 25-30 perfect more powerful than CO2.
Normally when methane is released from the ocean it is so far down that it can turn into CO2 before reaching the surface, but as the ice sheets melt, the methane is not as far down and begins to be released directly into the atmosphere. This could drastically accelerate the global warming effect.
So why is CO2 what is mentioned generally? The unnatural increase due to human activity of CO2 (yes and other GHG's, but CO2 is the highest as of now) into the atmosphere is what is causing the sudden and rapid melting of the glaciers. If CO2 released is stopped we can stop the worst cases of human altered climate change from happening.
This means, preventing these huge pockets of methane from being released, among other terrible possible scenarios, including global extinction of humanity in the distant future.
Scientific calculations up until April 2010 have not used the additional release of methane into the atmosphere to calculate the warming effect. This should cause a pause because as science has already proven, the warming effect is even worse than the worst case scenario predictions were even a few years ago.
If global warming continues to accelerate it will soon be out of control and there is a good chance humanity will have to go from trying to prevent it from happening to trying to figure out how to survive.
Next, we can look at the acidification of the oceans, which is destroying coral reefs where a vast amount of marine life lives. The Oceans are obviously a major source of food for many parts of the world, as well as coral reefs serve as a source for tourism, estimated to be worth around $30 billion. There's high potential for environmental and economic disaster if they are destroyed.
We can also look at the Great Lakes and how often they freeze. A hundred or so years ago it was very uncommon for the bays in the Traverse City area to not be frozen. Today it is very uncommon to see the bays freeze. A drastic difference, which allows for more evaporation over the winter months, particularly at night.
If the bays are not freezing the water is more likely to evaporate, which is why scientists say that there is a strong chance the Great Lakes water levels will start to decline.
Believe in it or not, one of the most basic things you can do is view this as simple risk management. Weigh the pros and cons of each side of the debate. What's the worst case scenario if we move forward with the information as fact, do everything in our power to move to a clean, renewable, emissions free energy future, reducing GHG's being released, taking care of the planet and then it turns out to be a hoax?
What's the worst case scenario if we do nothing at all and it turns out climate change and global warming due to human activity is real.
I've certainly been wrong on things before, I am only human, but I'll fight for a future of clean energy, clean air and water as well as for the future of my children and grandchildren, just in case. What will you do?
Learn more about this author, Kevin Numerick.
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Hoax
Created on: April 26, 2010 Last Updated: April 27, 2010
Up front we need to differentiate between global warming as a part of long term weather cycles of mixed periods and AGW (Anthropogenic Global Warming aka man made). From the published data and even newspaper headlines, it appears that we have been moving into a cooling period since the peak in 1998.
Since the end of the mini ice age in ~1850 there have been several warming and cooling periods. The ‘30’s were warm with a peak in 1938. The 40’s thru 1975 were cool. (So cool in fact that the headlines screamed of the coming ice age and we were advised to spread black soot on the glaciers to make them melt).
So now we’re coming out of the warming part of the cycle. This series of warming and cooling periods have been very mild in comparison to long term weather history. It’s just one of many weather cycles within a weather cycle that are driven by the sun spot cycles, the precession of the spin axis of the earth and even the changes in the earth’s rotational orbit about the sun.
AGW on the other hand is a figment of the imagination of the warmongers who are picking on carbon as the only scheme than they can conjure up to make money.
It is well documented that CO2 is the least effective of the infrared absorbing gasses in the atmosphere. It’s a fact that you can observe for yourself. Just go outside on a sunny day and feel the warmth of the sun. Then notice the significant drop in temperature as a cloud pass by.
Miles of CO2 “loaded” atmosphere didn’t have the effect of one thin cloud of water vapor. Methane, and the oxides of sulfur and nitrogen are many time more absorbent than CO2.
So blaming everything on CO2 doesn’t make much sense, especially taking into account the Beer-Lambert Law of radiation attenuation that predicts a process of diminishing results.
The initial amount of the filter medium (CO2 in this case and by the way CO2 is not a broad band filter) absorbs most of the radiation and each additional amount of CO2 takes out a smaller and smaller fraction of the remaining incoming or outgoing radiation. It’s an exponential decay.
In fact without our atmosphere, the earth would be 60 degrees cooler. So getting all nervous and jerky about a 1 degree temperature rise since the end of the little ice age is not reason enough to risk destroying our economy and our standard of living just so the Wall Street wheelers and dealers can rake in a fortune brokering Cap & Trade Credits.
It is exceedingly disingenuous to present the 1 degree temperature rise data out of the context of a 60 degree atmospheric effect and failing to acknowledge the hundreds of years of the medieval warming followed by the mini ice age.
These two periods had much more dramatic effects on the population of Europe (agriculture expansion lead to population increases) and subsequent devastation of the Viking colony on Greenland.
It doesn’t make sense to blame everything on AGW. The recent heavy rains were blamed on AGW as were the predictions of more intense hurricanes, as well as droughts. The latter is the easiest to disprove.
If the oceans temperature increased due to a warming trend; then the vapor pressure above the surface will increase and more moisture will be carried up into the atmosphere. There it will cool and return to earth as rain or snow.
Now it may not drop where we want it so there could be a change in local weather. It’s happened before. The Saharah used to be very lush and teaming with wildlife and people. But after the last ice age it started to dry out and the people moved east to settle around the waters of the Nile. So just as humankind has adjusted in the past to local climate change, we will have to do it again.
The wicked hurricane seasons didn’t happen either. Katrina deteriorated to be only a category 2 by the time it hit the coast. It was really a direct hit on a city that was already under water. It wasn't an intensity problem as much as it was a directional problem.
There is no doubt that civilization is affecting local conditions. It is well known that cities are warmer than the surrounding countryside. All the black top absorbs and retains heat much better than greenery. It also doesn’t retain water and the runoff is quicker and more dramatic.
These effects also confuse the “climatologists” trying to compare temperatures over a long period of time for the same location. Since the measuring base conditions have changed much more than the local weather.
There is so much more to learn about weather and climate before we start betting the farm on “predictions” that seem to be based on the preconceived notion that the nanny’s knows best. If you don’t know the difference between entropy and enthalpy, you should spend more time studying than pontificating.
Learn more about this author, George Binns.
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