Tag Archives: global warming

How and Why

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Ever since Tamino linked to me, essentially tripling my blog hits, it’s become obvious that a lot of my readers and regular commenters are very knowledgable in this issue – more than a few are actually scientists who study climate change.

This has been absolutely fantastic. Whenever I have an inkling of a scientific question, five or six people immediately provide me with further information and links. I’m considering compiling all the questions I have (the answers to which are obviously common knowledge, but researching them is almost impossible as over half the Google hits are from places like the Heartland Institute or Climate Depot, trying to explain how it’s all a big conspiracy) and putting them in a post one day.

This summer, I’ve been reading and researching an incredible amount about climate change, and have even m0re books, websites, and PDFs waiting for my attention. This is what I want to study one day, and every new discovery I make or mechanism I understand is just so cool.

However, I don’t want to lose sight of what this blog is about. I don’t want to get into debates about proxy reconstructions or climate models when I don’t even know calculus yet. I don’t want to try to disprove Steve McIntyre. I don’t want to try to write like Tamino or RealClimate. One day, maybe, and I’m certainly reading that kind of material. But I don’t want to be writing that kind of material, pretending that I know what I’m talking about when I usually don’t.

I’m not a scientist. I’m not even of voting age, and don’t have the educational qualifications to earn anything more than minimum wage. But if climate change is indeed a problem, we have limited time. I’m not going to wait until I know everything about the science and then write about that. While I’m learning the science, I’m going to write about what I do know.

The ultimate purpose of ClimateSight is and always has been to find, expose, and eliminate the discrepancies between scientific knowledge and public knowledge regarding climate change. As it wasn’t too long ago that I knew only what Al Gore and the newspaper told me, and as I’m surrounded by people in that situation in my day-to-day life, I believe I have a very intimate connection to what average non-scientists think about climate change, and why.

A lot of people believe that there are two, fairly equal, competing sides in the scientific community regarding whether or not humans are causing climate change. I believe this stems overwhelmingly from a sense of artificial balance in the media.

A lot of people will read an editorial written by someone who thinks the world isn’t warming, or that humans aren’t causing it, and believe them totally because it seems logical and the more credible sources don’t usually write editorials.

A lot of people seem to think that the scientific question of whether or not human-caused climate change is a physical reality is a personal opinion.

And almost everyone needs to know how to assess credibility and how to find the more credible sources.

I don’t believe that the public decision of whether or not climate change is a problem will really be influenced by technical arguments, regarding a single method or report, between blogs. I don’t believe that these two blogging sides will ever really convince each other. I’m certainly not interested in convincing anyone who has their mind firmly made up. I don’t think we’ll get anywhere, and it won’t really make a difference in the end result.

I believe the answer lies in an informed public. When people know where to get accurate and credible information about climate change, when they know who is and is not worth listening to, when they stop trying to figure out the science themselves and instead decide which scientific sources they will rely on…..then I believe the public will finally either demand swift and dramatic action against climate change, or set it aside as a non-problem.

As someone very connected to the public opinion, I strongly feel that the first outcome is far more likely. Maybe I’m biased, or maybe I’m just hoping too much. But I believe that people generally care about the future, and that the current policy of waffling around the issue of climate change is in direct contradiction to what people would demand if they were fully informed about what the prevailing scientific opinion actually is.

But either decision will only happen if and when the public becomes fully informed, especially about the nature of science and risk management. Our society lives in a democracy, which is a luxury many people in this world, and especially in history, do not enjoy. However, a democracy can easily be misled, and for it to work properly, a fully informed electorate is essential.

And that’s what I’m trying to do here.

A Course for Beginners

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This summer, I’ve spent so much time corresponding with people who know more than I do about climate change – like many of our regular commenters – that it’s always sort of strange to talk to people who are new to this topic. When they don’t know about the Milankovitch cycles, the concept of radiative forcing, or the water vapour feedback, it’s sort of hard to know where to begin.

The purpose of this blog has never been to report on advanced scientific topics. I’d say that I created ClimateSight to explore the discrepancies between scientific knowledge and public knowledge on climate change, and to provide readers with tools and strategies to gain accurate scientific information on the topic.

In the almost-two-years since I became interested in climate change, I’ve read a lot of books, watched a lot of documentaries, and visited a lot of websites. I’ve come across far too many sources which are absolute garbage, a lot which are okay but oversimplified, and a fair few which are absolute gems.

So, if you’re totally new to the topic of climate change, or know a little but want to know more, or know a lot but are always on the lookout for good sources, behold: Kate’s Climate Change Reading List.

The very first place I would start is by reading the book What’s the Worst That Could Happen? High school science teacher Greg Craven discusses the nature of science, credibility, objectivity, and risk managment – all framed around climate change. It’s designed to help the reader make a decision about whether or not climate change is a problem, without having to do any of the science themselves. This book can be ordered from pretty much any major bookstore. I wrote a review of it here.

For those who are interested in how climate science works, the next place to look is Environment Canada’s Frequently Asked Questions about the Science of Climate Change. This PDF document is incredibly thorough, covering every question from “What is climate and how does it differ from weather?” to “Could changes in cosmic radiation from outer space have caused global warming?”, all in a very easy-to-read format using relatively simple language.

Once you’ve read and understood that document, you’re probably ready for the most recent IPCC report. This report, which is a compilation of current scientific knowledge on climate change, is widely considered to be the most credible source of information on the topic. The best place to start is with the Summary for Policymakers, which is much less technical (and much more concise!), but if you want more information on any of the subjects discussed, it’s very easy to choose the appropriate chapter and find what you’re looking for.

By this point, you’ll probably have realized that there are a lot of people out there who are working very hard to prove the idea of human-caused climate change wrong. Many, if not most, of their arguments have no scientific backing. Journalist Peter Sinclair, in his YouTube series Climate Denial Crock of the Week, debunks the most common of these claims, from “it’s the sun” to “global warming stopped in 1998”, all in an incredibly logical and entertaining fashion.

Less visually appealing, and without the background music, but much more comprehensive, is Coby Beck’s series of articles entitled How to Talk to a Climate Skeptic. It’s pretty hard to find an argument against human-caused climate change that isn’t covered here, and you don’t need a lot of scientific training to understand what he’s talking about.

If you liked Greg Craven’s book, by this point you’ll love his video series How it All Ends. It’s directed at a more knowledgable audience than his book did, and contains a lot more to think about and really sink your teeth into, plus some goofy hats, entertaining subtitles, and occasional explosions.

If you feel like you basically understand the mechanisms of climate change, but want to stay on top of current developments, I subscribe to a long (and growing) list of climate change blogs written by scientists. Only In It For The Gold, Island of Doubt, A Few Things Ill Considered, Deltoid, More Grumbine Science, and Tamino are my favourites (commenters are more than welcome to suggest additions to this list).

Enjoy. This is a complex and politically charged subject, but definitely one worth investigating.

Moments of Revelation

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Dr Iain Stewart holding a rock

Dr Iain Stewart holding a rock

Over the past few days I’ve worked my way through the three-part BBC series, Climate Wars, hosted by Dr Iain Stewart, a geology professor with a very cool Scottish accent. An excerpt from this series was featured in one of Peter Sinclair’s videos, which looked quite fascinating, and anything Peter refers to as “brilliant” is probably worth watching.

Worth watching indeed. I’d recommend anyone and everyone to watch this series. It’s basic enough for someone with little to no knowledge of this issue, yet presented in such a compelling way that the most experienced climate scientist wouldn’t get bored.

One of the film’s major strong points was simply the way it was organized. Dr Stewart traced the history of both the science and the politics around climate change, splitting it into three parts:

Part one: Scientists had known for decades that anthropogenic greenhouse gases could cause warming of the Earth, but now, following thirty years of aerosol-induced cooling, global warming was starting to show; almost every year was record-breaking. James Hansen was the first to “stick his neck out” – testifying to Congress that he believed anthropogenic climate change was underway. He later claimed that he had weighed the risks of being wrong and looking stupid, versus doing nothing and not telling the world about such a huge potential threat. Sort of like an early Greg Craven, I suppose. I found this part to be the least interesting of the three. It also began strangely – Stewart mentioned a letter to the US president, signed by top scientists, which warned of an impending ice age. I’d never heard about this before. Does anyone else know more about this letter?

Part two: The skeptics fought back as strongly as they could, questioning absolutely every scientific claim regarding global warming. I found this to be absolutely fascinating; it solidifed a lot of issues in my mind and helped to unify my knowledge on the topic. Stewart went through the research which showed that the Earth was warming as a result of human activities – and showed how all the yelling from skeptics helped to make the theory even stronger. He also “infiltrated the walls” of the Heartland Institute’s International Conference on Climate Change, which I found to be absolutely hilarious. They had a comedian making bad jokes about how New York could handle some global warming, Monckton and Singer making their usual accusations of fraud (Stewart remarked that “when these become the talking points, then I know that the scientific debate is really over”), and Patrick Michaels publicly admitting “Yes, the second half of the century did show some warming, and it was the result of human activities…..and now you all hate me for saying that…….” Dr Iain Stewart explained that, even though the controversy doesn’t really exist anymore in the scientific literature, the claims of skeptics still live on in the popular media and on the Internet. Instead of fighting a scientific battle, they’re now doing public relations.

Part three: Scientists knew that humans were causing global warming, but how bad would it be? After the brilliance of the second part, I wasn’t expecting to enjoy the last segment quite as much…….but I was proven very, very wrong. It both terrified and fascinated me. Terrified because it discussed the Younger Dryas, something I hadn’t really heard of before, where it warmed about 5 C in just a few years. So far beyond anything I thought was possible. When this research was released, the idea that the climate was steady and slow-moving could no longer be embraced.

And then it fascinated me because it was the first time that climate models seemed really, really cool.

The idea of modelling something – anything – on the computer is somewhat unremarkable to me. I am of the generation that literally grew up using computers; I vaguely remember playing astronaut addition games on Windows 3.1 when I was four. I have seen so many things digitalized; the prospect of modelling climate is obviously immense, but it doesn’t amaze me.

But then Dr Stewart made a “dishpan climate model” with a spinning bowl, water with some dye, an ice-cube Antarctica, and a Bunsen-burner Sun. He set it all up and before long…..you could actually see regular patterns in the water’s movements that looked like the prevailing winds. It was so, so amazing. Even more amazing than a complex model on the computer because it was real and tangible and you could touch it. Like a little Earth on the countertop. All of the complex processes of our climate eventually come back to these simple factors. (I want to make one myself. But I don’t have one of those spinny things.)

And then I started wondering what computer modelling would be like, and remembering how much I loved physics last year, how I liked to put four or five algebraic equations together and solve it all in one complicated step to reduce error. Manipulating variables and shifting things around. Like a little puzzle. I was remembering how much I love hard math problems, because you actually have to use your brain, try everything you can think of, stretch the limits of your logic…..and you feel such a sense of accomplishment when you finish that all the work is worth it.

Is a climate model just a really large and complex collection of equations and puzzles that have to fit together in the right way? It would be pretty cool if it was. I knew that studying climate change required a lot of math, but this is the first time that I can see a clear path showing how an issue I care deeply about could coincide with aptitudes I enjoy.

Free Speech

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It hasn’t been long since I changed my comment policy, and already I’m getting complaints of censorship. I’m obviously not too concerned about the validity of these sources, but I thought I should address the issue regardless.

There are two reasons I will moderate a comment:

1) If you make a scientific claim which isn’t common knowledge (ie, you don’t have to cite “humans are causing climate change” or “the stratosphere is cooling while the troposphere is warming”), and don’t provide a citation from a legitimate peer-reviewed source to back up your statement, I will replace your comment with [citations needed].

For example, I would moderate comments such as these (all of which I just made up – nobody actually posted these):

Humans cannot be causing global warming. Volcanoes emit more CO2 than humans, and there have always been volcanoes and they have never changed the climate. The warming is obviously caused by the sun.

Climate sensitivity is very low – about 0.5 C. Read this post by Joanne Nova.

As Sallie Baliunas found, the medieval warm period was much warmer than today. This was very good for the Vikings and their grapes so we shouldn’t be worried about global warming.

The regular readers and commenters of ClimateSight will spend so much time debunking these common claims, which have been repeated endless times, that we won’t be able to move forward in our discussion. For example, compare the level of useful discussion on this post to this post. Whether or not you’re trying to, if you’re posting statements which claim to invalidate anthropogenic global climate change, with no scientific backing, you’re wasting our time. If you’re deliberatly wasting our time, of course we’re not going to include you in the discussion. If you’re genuinely interested and have heard these statements and want to know more, refer to Coby Beck’s How to Talk to a Climate Skeptic. It’s by far the most comprehensive list of common misconceptions on the web. We’d just be repeating similar arguments anyway….

If you’re getting into more complicated arguments with lots of math, you still have to cite your basic conclusions. Keep in mind that I am just a lowly high school student who doesn’t know any calculus. I can’t possibly assess people’s arguments on their content – so I trust the “peer-reviewed” credential more than any amount of logic.

2) If you post something which is inflammatory, aggressive, insulting, politically extreme, a personal attack on a respected scientist, a random grumble about Al Gore, etc, your comment will be replaced with [inflammatory]. Here are some examples (again, made up):

Al Gore is EVIL and he just wants to tax us all!!!!!!!!!!!! What about the ice ages where it warmed without anyone driving hummers!!!!!!!! That’s his INCONVENIENT TRUTH!!!!!!!!!!!!!!

Any form of liberal government will never, ever, work, and regulations should never be allowed, no matter what the threat is. All regulations should be suspected as government influence on our lives and incomes.

You are an alarmist and a quasi-religious zealot. You’re just believing what Hansen says because it fits with your preconceived conclusion. Did you know that Hansen adjusts all the temperature data before he graphs it? There’s good reason to suspect that GISS is committing fraud.

When I encounter comments like these, it’s pretty obvious that you’re not interested in having a useful discussion, and just want to yell at people. You’re not helping the quality of the discussion one bit.

There’s a difference between deleting comments like these – which waste everyone’s time and patience – and participating in what we call “censorship”. Censorship is the practice of suppressing ideas and free speech by eliminating someone’s form of communication to the world. I am in no way practicing or endorsing this. You are more than welcome to start your own blog and yell about Al Gore all you want, or to go and comment about CO2 lagging temperature on any other blog you find. A better example of censorship would be how Watts removed Peter Sinclair’s video from Youtube – how else was Sinclair supposed to get his videos out to the world?

There are lots of places to say what you want elsewhere. But here I am the editor, and I am not going to publish comments which will sabotage our discussion. I am going to cater to the requests of those who respect this blog and wish to further the discussion, not those who wish to delay it.

Inflammatory statements are quite obviously inappropriate in a useful discussion. Additionally, keep in mind that science is not built around the pillars of completely free and unrestrained speech, as Brian pointed out. If it was, Nature and Science would have to publish absolutely every submission they received, whether or not it was correct or legitimate. In the real world, however, if a study were to make unusual claims without appropriate evidence or citation, it would go right out the window.

You can say whatever you want. But if it’s inflammatory or lacks citations, and you try to publish it here, don’t complain if it gets deleted.

(Making up all those moderation-worthy comments was kind of fun, though!)

Update: RealClimate has a great quote which sums up my feelings on this issue:

“Comments that accuse as of bad faith, fraud and dishonesty are not ways to move forward any conversation – how can you have a dialog with people who don’t believe a word you say? We choose to try and create a space for genuine conversation, which means weeding out the trolls and the noise. This is an imperfect process, but the alternative is a free-for-all that quickly deteriorates into a food fight. There are plenty of places to indulge in that kind of crap. There are only a few places where it’s not and we are not embarrassed to try to make this site one of them.”

Climate Change and Evolution

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Many advocates of anthropogenic climate change are also advocates of the theory of evolution. The two are often used in analogy in many different ways. In particular, skeptics of the two theories are often alleged to be either the same people or using the same tactics to spread public confusion.

I am not strongly religious, and I fully accept evolution. I understand that some others do not as it conflicts with their spiritual beliefs. I understand that alternative theories have failed to stand up to scientific scrutiny in the peer-reviewed literature. It is my opinion that these theories of creation or intelligent design should remain religious beliefs, and not attempt to be passed as objective science.

But I really don’t mind if people out there don’t believe in evolution. I couldn’t care less.

My feelings are exactly the opposite on anthropogenic global climate change. Why?

The difference between the evolution debate and the climate change debate is that the latter has consequences for the real world. Endless public debating and alternative theories about climate change could easily spread confusion and delay action to mitigate the threat. Indirectly, public debating on climate change, rather than leaving the debate to the scientists and taking action based on their conclusions, poses a threat to our future and our way of life.

Debating on evolution, in contrast, isn’t like that. At worst, it could slow down scientific progress in the area of biology. It could offend people. But could it wipe out our civilization? Of course not. Could climate change? Even the most skeptical person has to admit that it is a possibility.

Denial Depot

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Over at A Few Things Ill Considered, I was introduced to this site.

I’m almost positive that it’s satire. What do you think?

Whatever it is, it’s hilarious. Here are some of my favourite excerpts:

“It’s Friday afternoon at the IPCC climate lab. Dozens of government funded climate scientists are hunched around a big computer frantically feeding in dodgy punch cards. They’ve had it easy the rest of the year, not even wearing their lab coats most of the time, but this week is different. The IPCC report is due out on Monday and they must get those warming projections as high as possible before release.”

“But worse we find out these satellites are using microwaves to measure ice! As an experiment I took a glass of ice and put it in a microwave oven…….I did observe the microwaves melting ice. So is in fact arctic ice decline being caused by sustained subjection of arctic ice by microwave radiation emitted from NASA satellites?”

“As well grounded climate skeptic bloggers we immediately become suspicious of this record because it shows a warming trend. We know that the surface record shows only Urban Heat Island bias and AC Unit Warming bias in this period. Yet neither of these effects will be picked up by satellites, so why do the satellites still show warming? Something is wrong. The #1 tool of the avid skeptic is imagination. So lets put our imagination to use and gather together some seeds of doubt. With luck some of these seeds will survive to grow into full blown talking points.”

“Why are the so-called experts silent about all the snow that is everywhere? Well it’s most likely because they are all shut indoors all day with their climate models. That’s right, they are so busy playing Climate Tron that they haven’t the foggiest idea what is going on outside anymore.”

Also check out the great lesson in exponentials.

Have fun!

New Comment Settings

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In response to a very drawn-out debate regarding complex scientific topics, I have changed the comment policy of ClimateSight. Thanks to the many commenters who helped shape this new policy, in particular Hank and Richard.

The new policy is as follows:

If you have something to say, you are more than welcome to leave a comment. However, if you make a scientific claim, like “modern times are warmer than any other period in the past millenium”, or “bristlecone pine data is unacceptable for use in proxy reconstructions”, you must provide an acceptable reference.

For our purposes, an acceptable reference must be peer-reviewed, whether it was published in a journal (but not Energy and Environment!) or is a statement from a professional organization like the NAS. The source cannot have been discredited since its publication.

Blogs don’t count. Reputable blogs will always reference their scientific claims, so all you have to do is take the extra step of checking out their citations. (If they don’t have any citations, what does that tell you?) This requirement eliminates a lot of the misrepresentation and drawn-out debates which are all too common on climate science blogs.

How does that sound? Any suggestions for further improvement?

You know, collaborating with others like this really helps me understand why peer review works. There’s no way I could make such improvement on ClimateSight without the help of our commenters.

Update: Thanks to all of your suggestions, I’ve altered the policy yet again. We’ll see how many revisions it’ll have to go through before it’s finalized. Peer-review at its finest. I’ll also put this comment policy in the sidebar so it’s visible on every post.

If you have something to say, you are more than welcome to leave a comment. However, if you make a scientific claim which is not already common knowledge – like a new theory or a recent statistic – you must reference a legitimate peer-reviewed source (ie, not Energy and Environment!). The source cannot have been recently discredited (ie, don’t reference the 1000-year temperature reconstruction by Sallie Baliunas).

Blogs don’t count. Most reputable blogs will reference all of their scientific claims, so all you have to do is take the extra step of checking out their citations. If they don’t have any citations, what does that tell you?

Any failures to comply with this comment policy will be deleted.

Logic

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Background information is important.

This is what I was thinking while I was reading “The Twenty Three (and Growing) Smoking Guns of Global Warming” on the Heartland Institute website, while researching for quotes to use in my post A Well-Documented Strategy. The introduction reads,

“Before you read this essay, I ask you to forget everything you have learned about global warming…..Your job is to review the study with unbiased eyes, and grade the project based upon how sound the science is in supporting the conclusion.”

Robert Wagner, the author, seems to equate background information and expertise with bias, as “[climatologists’] funding depends on carbon being the cause of global warming.” He does not trust climatologists, or any sort of expert in this issue, as their salary seemingly depends on AGW.

If you read the article while “forgetting everything you have learned about global warming”, it has an internal logical flow. If you rely upon your background information and expertise – even if you’re not a scientist, just a nerdy volunteer blogger like me – their conclusions fall apart.

This is most obvious when the article pulls out the old “CO2 lags Temperature” crock. It makes perfect sense – how can carbon change temperature if it’s actually the other way around? – until you read a little further into other sources.

Then they go on about Christy’s satellite data. Which seems to support their conclusion, until you find out that it’s been discredited multiple times and Christy has now retracted his data.

They have a throwback to the early days of climatology when everyone believed that the bands of radiation CO2 absorbed overlapped so much with water vapour that extra CO2 wouldn’t make a difference. They phrase this in a way that makes it seem like this is the current theory.

They take the correction that GISS made, where 1934, not 1998, was found to be the warmest year in the US, and conveniently remove “in the US”, implying that 1934 was the warmest year globally.

All of this works…..as long as you don’t read anywhere else. The author says to you, “Forget everything you know, and only accept what I tell you, as well as the blog posts and newspaper articles that I cite.” Knowledge from anywhere else is seen as “biased” because climatologists are just out for grant money to increase their personal wealth. Yes, the only credible source out there is the Heartland Institute. So of course their articles have an internal logical flow…..as long as you obey their instructions to only believe their articles.

What a creepy form of censorship. What an underhanded way to manipulate the reader. How is the Heartland Institute allowed to exist without some sort of disclaimer? How does anyone take them seriously?

Why Is it So Cold???!!!!

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Anyone who lives in the north-central United States, or most areas of Canada, can agree with me here: Spring and summer have been incredibly cold this year.

Yesterday, I asked a climatology prof that I know, “Is there a reason for this? Or is it just a fluke?”

There was a reason, as he explained. And it’s incredibly cool (to me at least) and in no way proves that global warming is all wrong.

Let’s help the story along with a map, courtesy of World Atlas (doodles and arrows are my own).

map

The jet stream (the black curvy line on the map) is the boundary between the cold polar winds and the warmer temperate winds. In the Northern Hemisphere, when the jet stream is south of you, your area will be cold. When it is north of you, it’ll be nice and warm.

The northwestern Pacific has been warm this spring and summer. This warmth is pushing the jet stream further north. BC is experiencing the effects of this change – it’s had unseasonably hot, dry conditions, which are aggravating their already-worrisome forest fire problem.

When the jet stream peaks northward, the prof explained, it has to follow that with a trough. The peak on the West coast was very strong, so the trough further eastward, in the continental US and Canada, has also been very strong. Areas as far south as Chicago have had many days where the jet stream is south of them, so they’re submerged in polar air.

So all spring and summer, the jet stream has been “stuck” in the (very approximate) shape you see above. As an El Niño just began, our area would usually expect a warm winter. However, should the jet stream stay stuck in this shape…..we might have a colder winter than normal. The Prairie winters are bad enough already. I can only imagine the “so much for global warming” comments which would happen if such a winter came to pass.

So, in a strange way, our area has been so cold because somewhere else has been really warm. This can’t prove that the Earth is warming, as no single event can.

But it certainly doesn’t disprove it.

Sinclair Wins

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As I noted on my last post about this issue,

“I will consider the issue a true victory for Sinclair when he re-uploads the video on his account.”

It is a true victory for Sinclair!

As he writes on his DeSmogBlog post,

“In accordance with established YouTube guidelines, I filed a “counternotice”, affirming, “under penalty of perjury, that I have a good faith belief that the material  was removed or disabled as a result of a mistake or misidentification of the material to be removed or disabled.”

As of today, I have received the following confirmation from YouTube:

” In accordance with the Digital Millennium Copyright Act, we’ve completed processing
your counter-notification regarding your video:

http://www.youtube.com/watch?v=dcxVwEfq4bM

This content has been restored and your account will not be penalized.”

I wish to extend my sincerest gratitude to YouTube, to all those who advised and supported me in this effort, and most especially, to Anthony Watts and SurfaceStation.org, for providing invaluable exposure to my video series, and greatly increasing my traffic and visibility.”

The newly reinstated video is imbedded in that post, or you can watch it here.

Hooray for truth winning out.