First of all, I'm terribly sorry for such a late post. A lot of things are happening lately and I was just caught in the midst of a storm of deadlines, assessments, etc. I can truthfully say, though, that this post took a long time to write. Climate skepticism is one big issue, so quite a lot of research and thought went to this post.
As written on the previous post, this series is going to be about the book written by Fred Singer and Dennis Avery: Unstoppable Global Warming: Every 1,500 Years which was published in 2006. Over 16 chapters, the authors argue that the current rise in global temperature is not due to greenhouse gases (GHGs) from human activity but part of natural cycles in the Earth's climate. Instead of trying to reduce gas emissions, they say, we should prepare for the effects that follow.
Honestly, I began reading with a little doubt - how far could anyone challenge something that persists and prevails in education systems, political conversations, and scientific research? Climate skepticism wasn't a concept that I was greatly familiar with; as a firm believer in the influence of human activity on global warming, I decided to read this book to see what the other side was thinking about.
After a couple of hours of reading, I could see why it had caused such a sensation. It quoted 'Greenhouse Warming Advocates" and "alarmists" and then directly refuted the details. This was a truly effective way to get the readers to question everything they had learned through primary and secondary education, newspapers and presentations. I began to realize that there may have been imperfections and flaws in the explanations for human impact on global warming. However, I noticed some serious errors and flaws in the book as well. Here's an example of a point that I found to be misguided or unfounded:
- What the book says: The rise in temperature caused by human industrial activity is insignificant. There has only been a few degrees increase.
What I noticed/realized: Nowhere in the book is ocean acidification mentioned. A huge bulk - 25%, according to Pacific Marine Environmental Laboratory - of carbon dioxide released into the atmosphere is dissolved in oceans and other water bodies like rivers and lakes. The reaction with water forms carbonic acid which eventually gives a bicarbonate ion and hydrogen ion, increasing the water's acidity. This is a reason why the actual number of degrees increase in temperature has not been increasing as much...although this may change when the threshold for the maximum carbon dioxide for absorption is reached.
As you can see, there are some aspects of the story in the book that I cannot agree with. Throughout the series of these blog posts, I will give a glimpse of what the book says, as well as my own opinions and questions that I had while reading this book.
Now, I will talk briefly about the relationship between the Earth and the Sun, a point that the authors make early in the book. Remember, the opinion in this book is that big alterations in our climate are not due to human activity but through inherent cycles of change that the Earth goes through anyway. It will give you a hint as to how they set out their story, as well as the science that is important to know in understanding how the Earth's climate system works.
One crucial "linkage" between the Earth's climate and the changes in the sun is cosmic rays. Under normal conditions, the sun emits a "solar wind" that shields our planet from cosmic rays that "bombard the rest of the universe". When the sun is weak, more cosmic rays reach the Earth's atmosphere. Here is a direct quote from the book: "... more of the cosmic rays get through to the Earth's atmosphere. There, they ionize air molecules and create cloud nuclei. These nuclei then produce low, wet clouds that reflect solar radiation back into outer space. This cools the Earth."
We must consider another aspect which, of course, concerns the ozone layer in our stratosphere. According to climate models mentioned in the book (Ah, climate models! Another matter that has to be discussed, maybe in the next post), "a 0.1 percent change in the sun's radiation could cause a 2 percent change in the Earth's ozone radiation, affecting atmospheric heat and circulation." When the sun is in a more active state, there is an increase in the ultraviolet rays reaching the Earth. Below is a diagram of how ultraviolet rays break oxygen molecules, some of which turn into ozone.
What do you guys think? Do you think factors such as the sun's cycles of change give enough reasons for believing that we aren't really responsible for global warming? Why do you think our teachers, politicians and non-governmental organizations tell us otherwise? Why are some people so adamant on denying our impact on the Earth's system?
If you would like to share your ideas, please post comments below!
After a couple of hours of reading, I could see why it had caused such a sensation. It quoted 'Greenhouse Warming Advocates" and "alarmists" and then directly refuted the details. This was a truly effective way to get the readers to question everything they had learned through primary and secondary education, newspapers and presentations. I began to realize that there may have been imperfections and flaws in the explanations for human impact on global warming. However, I noticed some serious errors and flaws in the book as well. Here's an example of a point that I found to be misguided or unfounded:
- What the book says: The rise in temperature caused by human industrial activity is insignificant. There has only been a few degrees increase.
What I noticed/realized: Nowhere in the book is ocean acidification mentioned. A huge bulk - 25%, according to Pacific Marine Environmental Laboratory - of carbon dioxide released into the atmosphere is dissolved in oceans and other water bodies like rivers and lakes. The reaction with water forms carbonic acid which eventually gives a bicarbonate ion and hydrogen ion, increasing the water's acidity. This is a reason why the actual number of degrees increase in temperature has not been increasing as much...although this may change when the threshold for the maximum carbon dioxide for absorption is reached.
As you can see, there are some aspects of the story in the book that I cannot agree with. Throughout the series of these blog posts, I will give a glimpse of what the book says, as well as my own opinions and questions that I had while reading this book.
Now, I will talk briefly about the relationship between the Earth and the Sun, a point that the authors make early in the book. Remember, the opinion in this book is that big alterations in our climate are not due to human activity but through inherent cycles of change that the Earth goes through anyway. It will give you a hint as to how they set out their story, as well as the science that is important to know in understanding how the Earth's climate system works.
One crucial "linkage" between the Earth's climate and the changes in the sun is cosmic rays. Under normal conditions, the sun emits a "solar wind" that shields our planet from cosmic rays that "bombard the rest of the universe". When the sun is weak, more cosmic rays reach the Earth's atmosphere. Here is a direct quote from the book: "... more of the cosmic rays get through to the Earth's atmosphere. There, they ionize air molecules and create cloud nuclei. These nuclei then produce low, wet clouds that reflect solar radiation back into outer space. This cools the Earth."
We must consider another aspect which, of course, concerns the ozone layer in our stratosphere. According to climate models mentioned in the book (Ah, climate models! Another matter that has to be discussed, maybe in the next post), "a 0.1 percent change in the sun's radiation could cause a 2 percent change in the Earth's ozone radiation, affecting atmospheric heat and circulation." When the sun is in a more active state, there is an increase in the ultraviolet rays reaching the Earth. Below is a diagram of how ultraviolet rays break oxygen molecules, some of which turn into ozone.
 |
Image from Wikimedia Commons, the free media repository
Derivative work by Smartse
|
If you would like to share your ideas, please post comments below!
Next post will be on the authors' reasons why the "Greenhouse Theory fails".
Read part of the book here:
http://www.reasontofreedom.com/unstoppable_global_warming_by_s_fred_singer_and_dennis_t_avery.html
