Showing posts with label Global Warming. Show all posts
Showing posts with label Global Warming. Show all posts

Saturday, August 25, 2007

Shh, It's Cold

Why is it that when temperatures are colder than usual, the media never mentions how this relates to global warming:
Temperatures on the Atlantic coast have been on average two or three degrees Celsius below seasonal averages, said Jean-Marc Le Gallic from Meteo France.

No mention of global warming, though, just a description of how people are depressed as a result.

Now, if it was warmer than usual, no doubt this would be more evidence of global warming. But since it's colder, global warming is not mentioned.

Wednesday, March 28, 2007

Another Reason for Warming

More people, bigger cities:

Average temperatures across California rose slightly from 1950 to 2000, with the greatest warming coming in the state's big cities and mostly caused by urbanization -- not greenhouse gases -- authors of a study released on Wednesday said.

The study found that average temperatures in California rose nearly 2 degrees Fahrenheit (nearly one degree Celsius) in the second half of the 20th century, led by large urban centers such as San Francisco and Southern California.

"Everybody's talking about the carbon coming out of the SUV exhaust or the coal plant, but in the past 50 years in California the bigger impact has been urbanization and suburbanization," said Bill Patzert of NASA's Jet Propulsion Laboratory, one of the study's authors.

"Exhaust from the SUV is just piling on," he said. "One is heating you from above, the other is heating you from below."

Thursday, March 22, 2007

Fred Thompson on Warming

I really don't know much about Fred Thompson, but this was pretty amusing:
Some people think that our planet is suffering from a fever. Now scientists are telling us that Mars is experiencing its own planetary warming: Martian warming. It seems scientists have noticed recently that quite a few planets in our solar system seem to be heating up a bit, including Pluto.

NASA says the Martian South Pole’s “ice cap” has been shrinking for three summers in a row. Maybe Mars got its fever from earth. If so, I guess Jupiter’s caught the same cold, because it’s warming up too, like Pluto.

This has led some people, not necessarily scientists, to wonder if Mars and Jupiter, non-signatories to the Kyoto Treaty, are actually inhabited by alien SUV-driving industrialists who run their air conditioning at 60 degrees and refuse to recycle.

Silly, I know, but I wonder what all those planets, dwarf planets and moons in our solar system have in common. Hmmmm. Solar system. Hmmmm. Solar? I wonder. Nah, I guess we shouldn’t even be talking about this. The science is absolutely decided. There’s a consensus.

Ask Galileo.

Tuesday, March 13, 2007

Global Warming Skeptics

From a U. of Alabama climatologist: " all we really know is that we are warmer now than we were during the last 400 years." I think that's a good way to sum things up.

The UK sees things differently, though, and is proposing domestic laws that mandate carbon emissions:
Milliband said failure to meet targets could land governments in court. Governments that fail to meet the stipulations of the bill will be subject to judicial review. It will be for the courts to decide what sanctions to apply," he said.

Honestly, I can't think of a better way to bog down the process of cleaning up the enivironment than getting the courts involved.

Now, if they really wanted to lower carbon emissions, they could spend lots of money replacing existing power plants with solar and wind power. But that would require action rather than vague promises to fix the problem later, which is much easier.

Saturday, February 17, 2007

Global Warming Solved! Maybe!

From Instapundit, a scientist proposes putting lots of small silicon dioxide particles in the atmosphere so as to reflect sunlight and cool the planet. Will that work? I don't know, but let's keep it on file in case we need it.

Sunday, February 11, 2007

Nothing Like the Sun

From what I've read, the sun is very hot. My observations of the sun confirm this. Generally speaking, I find that the temperature is warmer when the sun is up than when it is down. I have surmised from this that the sun is warming things up.

Thus, the following alternative theory of global warming strikes me as somewhat credible. In short, the argument is that the recent warmer temperatures are due to the sun:
the sun drives climate changes more emphatically than greenhouse gases do. After becoming much more active during the 20th century, the sun now stands at a high but roughly level state of activity. Solar physicists warn of possible global cooling, should the sun revert to the lazier mood it was in during the Little Ice Age 300 years ago.

Not being a scientist, I can't really evaluate this theory in a meaningful way. (I haven't noticed the sun being more "active" recently, but then I usually try not to look directly at it). But I will keep an eye on news reports on the subject.

Saturday, February 10, 2007

Global Warming Questions

One of my concerns about the global warming debate is the failure of those who say it exists to address arguments that undermine their views. For example, I just read this:

I also asked Dr. [Ian Howat of the University of Washington] about the argument that, since Greenland went through decades of relatively warm weather in the first half of the 20th century without catastrophic consequences, it’s unlikely that the glaciers are suddenly going to plunge into the ocean because of the current warming. His response:

Greenland was about as warm or warmer in the 1930’s and 40’s, and many of the glaciers were smaller than they are now. This was a period of rapid glacier shrinkage world-wide, followed by at least partial re-expansion during a colder period from the 1950’s to the 1980’s. Of course, we don’t know very much about how the glacier dynamics changed then because we didn’t have satellites to observe it. However, it does suggest that large variations in ice sheet dynamics can occur from natural climate variability. The problem arises in thepossibility that, due to anthropogenic warming, warm phases will become longer and more severe, so that each time the glaciers go through a period of retreat like this, they won’t fully grow back and they will retreat farther the next time.

So why was it so warm in the 1930s and 1940s? Does that tell us anything about why it is warm today? The global warming experts' answer to these questions, to the best I can tell, seems to be, "I don't know." Which isn't very satisfying, and leaves some reasonable doubt in relation to the global warming debate.

Friday, February 09, 2007

Global Warming Denial: Soon to be a Crime?

Glenn Reynolds and Johah Goldberg criticize Ellen Goodman for comparing global warming skeptics to holocaust deniers. This makes me wonder: Will "global warming denial" become a crime in parts of Europe soon?

ADDED: Jeez, I was joking, but somebody is already saying this seriously.

Saturday, February 03, 2007

Pretending to Fight Global Warming

Apparently, Congress is having a pseudo-debate about global warming, in which they discuss various alternative cap-and-trade proposals. As already evidenced by the results of the Kyoto pact, some of these will have no impact on greenhouse gas emissions; others will have virtually no impact on greenhouse gas emissions.

Now, if governments ever get serious about fighing global warming, here are some things they could do:

(1) Put solar panels on government buildings. It might be mostly a symbolic gesture in terms of the energy produced, but it would set a good example.

(2) Give large tax credits to people who put solar panels on their roofs.

(3) Give large tax breaks to wind turbine and fuel cell producers; and to wind farms and fuel cell-based power plants.

Ultimately, if we want to reduce emissions, we're going need to rely mostly on these zero emission energy sources. If we want this to work, it's time to start subsidizing their use.

Friday, January 19, 2007

The Gaps in Global Warming Science

Part of the reason I'm skeptical about many global warming claims is the gaps in the evidence and the failure of global warming campaigners to address them. Here's an example. In an article about how warmer ocean water have led to more fish and other sea creatures being found found up north, the following is noted:
The world's oceans are already in a warming trend that could alter fish stocks, perhaps damaging coral reefs that are vital nurseries for tropical species while boosting northern stocks of cod or herring.

The concluding sentence then states:
In a sign of how higher temperatures might help some fish stocks, a period of warmer waters in the 1920s allowed cod to spawn off Greenland and let a new stock break away from Icelandic waters.

Wait, what? Cod being found up north, which was a concern stated early in the article, happened before when there was a period of warmer waters in the 1920s? Well, why did that period of warming occur? How much warmer was it? Can it tell us anything about the increases in temperature seen today? Isn't this worth elaborating on ?

When I read pieces like this, it seems to me that a lot of the "science" behind global warming is intentionally skewed to reach a certain result, in part by ignoring evidence that counters the accepted view. That doesn't mean global warming is not real. It just means that many of the people pushing for action to deal with it are not all that credible.

Wednesday, December 20, 2006

Brr, It's Getting Warmer

Reuters reports:
2006 is set to be the world's sixth-warmest year since records began 150 years ago, the World Meteorological Organization said on Thursday, offering more evidence of a trend most scientists blame on greenhouse gases.

Another way to put it would be the following:
right now it seems that 2006 will become the coldest year among the most recent five years, and it will belong to the colder half of the years in the last decade.

Tuesday, December 05, 2006

Global Warming: How Much Warmer Is It?

The latest measure of global warming is in, this time for the Alps region. The authors conclude that "Europe's Alpine region is going through its warmest period in 1,300 years." Well, that settles it, then. But wait. As usual, there is some fine print to read:

Boehm said the current warm period in the Alpine region began in the 1980s, noting that a similar warming occurred in the 10th and 12th centuries. However, the temperatures during those phases were "slightly under the temperatures we've experienced over the past 20 years."

Hmm, "similar" warming in the past that is "slightly under" today's temperature. Could you elaborate on that, please? Well, the news article doesn't say anything more. But you can go to the actual studies: http://www.zamg.ac.at/alp-imp/ Now, I'm no scientist, but what I see on page 40 (of the pdf file), for example, of the final report is a graph that seems to show temperatures from the Medieval Warm Period that are quite close to that of today: http://www.zamg.ac.at/alp-imp/downloads/ALP-IMP-final-rep-public.pdf What I'd love to hear from the global warming folks is an explanation of why the temperatures were so high back then. That might help get people on board with their cause.

Tuesday, November 28, 2006

Mass v. EPA Global Warming Case

Jonathan Adler points to a NY Times editorial that argues the Bush administration is in the wrong in the Mass. v. EPA case:

A group of 12 states, including New York and Massachusetts, is suing the Environmental Protection Agency for failing to properly do its job. These states, backed by environmental groups and scientists, say that the Clean Air Act requires the E.P.A. to impose limits on carbon dioxide and other greenhouse gases emitted by new cars. These gases are a major contributor to the “greenhouse effect” that is dangerously heating up the planet.

The Bush administration insists that the E.P.A. does not have the power to limit these gases. It argues that they are not “air pollutants” under the Clean Air Act. Alternatively, it contends that the court should dismiss the case because the states do not have “standing,” since they cannot show that they will be specifically harmed by the agency’s failure to regulate greenhouse gases.

A plain reading of the Clean Air Act shows that the states are right. The act says that the E.P.A. “shall” set standards for “any air pollutant” that in its judgment causes or contributes to air pollution that “may reasonably be anticipated to endanger public health or welfare.” The word “welfare,” the law says, includes “climate” and “weather.” The E.P.A. makes an array of specious arguments about why the act does not mean what it expressly says. But it has no right to refuse to do what Congress said it “shall” do.

Their "plain reading" argument is hard to take seriously. Do they really believe that? Remember, the act refers to "clean air" not "warm air." And is "air pollution" really at issue in the global warming debate? I understand they are desperate for some action to be taken, but it seems to have affected their reading ability. Whatever your view on the appropriate result, the interpretive issues are certainly not "plain."

Sunday, November 26, 2006

The Supreme Court Takes on Global Warming

The Supreme Court will hear arguments this week in a case that addresses the questions of:

"Whether the EPA Administrator has authority to regulate carbon dioxide and other air pollutants associated with climate change under [the Clean Air Act]"

and

"whether the EPA Administrator may decline to issue emission standards for motor vehicles based on policy considerations not enumerated in [the Clean Air Act]"

As I understand it, the basic issue is whether the 1970 Clean Air Act covers air pollution from carbon dioxide, which is thought to lead to global warming (and was clearly not in the minds of the legislators at the time because no one thought there was global warming back then). The Supreme Court has to determine whether carbon dioxide is covered by the terms of the statute.

To me, this seems like an awful way to make policy. The better way to determine whether Congress wants carbon dioxide covered is to have Congress legislate on the matter now. Don't ask the Supreme Court to apply legislation drafted in1970 to a 1990s issue. Sure, they can make up an answer, but it's going to be very unsatisfying reasoning whichever way it comes out.