Hi Mortkat. Glad to see you back. Let's go....
Mortkat wrote:I am very much afraid that Old Europe does not have the facts on the alleged "global warming"
No? The "facts"? Well, let's see where you get your "facts" from, shall we?
Mortkat wrote:I will refer to the report from "Earth Report" --McGraw-Hill - P. 2000
Okay. So everything you post here is from the "Earth Report"? Wasn't that book written by Ronald Bailey? Uhm.... Let's look him up, okay?
Quote:RONALD BAILEY
Adjunct Scholar, Competitive Enterprise Institute
Adjunct Scholar, Cato Institute. Science Correspondent, Reason Magazine. Science and Technology reporter for Forbes 1987-1990. Competitive Enterprise Institute's Warren T. Brookes Fellow in Environmental Journalism in 1993.
Bailey has written widely in criticism of climate change science and is a producer for television shows "Think Tank" and "Technopolitics."
Bailey was editor of "Global Warming and Other Eco-Myths: How the Environmental Movement Uses False Science to Scare Us to Death," "The True State of the Planet" and "Earth Report 2000: Revisiting The True State of The Planet," all of which were published by the Competitive Enterprise Institute. He authored "Eco-Scam: The False Prophets of Ecological Apocalypse" and "The Law of Increasing Returns." Bailey received funding for Eco-Scam from the Atlas Economic Research Foundation. Bailey has long-standing connections to the Wise Use movement and was a speaker at the 1997 Fly In for Freedom, the annual gathering of "wise use" activists sponsored by the Alliance for America.
BA in economics and philosophy at University of Virginia.
Alright. Well, it's good to know whether or not your source is biased. That helps when you want to evaluate the content, doesn't it?
Now, let's look at your "facts":
Mortkat wrote:First of all, the ground based measurements have shown a warming of the planet of about 0.1 to 0.15 C( NOTE) per decade in the last century, giving rise to the concern that man made greenhouse gases may be dangerously warming the planet. The GROUND BASED TEMPERATURE RECORD HOWEVER, SUFFERS FROM MANY PROBLEMS SUCH AS THE URBAN HEAT ISLAND EFFECT WHICH MAKES IT DIFFICULT TO TELL WHETHER THE OBSERVED WARMING IS REAL OR AN ARTIFACT OF INSTRUMENT KOR MEASUREMENT ERROR.
Without doubt you have heard of studies comparing tempature readings taken on calm nights with those taken on windy nights. If the urban heat island theory is correct then instruments should have recorded a bigger temperature rise for calm nights than for windy ones - because wind blows excess heat away from cities and away from the measuring instruments. There was no difference between the calm and windy nights.
So, obviously, the "urban heat island effect" theory has not been verified by any actual measurement. (I find it rather interesting that you point out the weakness in one theory and then go on to quote another unproven and unverified theory.)
Mortkat wrote:l. Old Europe says we live on the surface of the planet--Of course but it is vital to obtain measurements from Satellite data for many reasons, one of which is the urban island effect.
Yeah. That's being done, isn't it? So, Mortkat - has the satellite data rendered different results? Does it NOT confirm the rise in average temperatures?
And where did I argue against using satellite data?
Mortkat wrote:I am sure that Old Europe realizes that Co2 rises. The computer simulations that produce alarming levels of warming over the next century ALL ASSUME that water vapor( the most important natural greenhouse agent) will amplify the small bit of warming expected from an increase of CO2 concentration IN THE AIR.
No, you must be mistaken there. The most abundant greenhouse gases are water vapor and carbon dioxide. Carbon dioxide is, after all, a natural greenhouse agent, too. Both H2O and CO2 in the air contribute to Earth radiative equilibrium. Therefore, a change in either H2O or CO2 levels will change that equilibrium.
How do, in your view, interact H2O and CO2 in the air?
Mortkat wrote:That assumption has not been verified by any actual measurement.
What assumption, Mortkat? I mean, could you be a little bit more precise?
Mortkat wrote:The National Academy of Sciences in 2001 reported:
"The nature and magnitude of these hydrological feedback give rise to the LARGEST SOURCE OF UNCERTAINTY ABOUT CLIMATE SENSITIVITY"
(Do you have information and data which contradicts this last point, Old Europe?)
I don't know what your point here is. We all know that climate models are just models. Hence the name. Nobody is arguing that, with 100% certainty, temperatures will rise by some 8° Celsius during the next 100 years.
The point made is mostly just this: CO2 is a greenhouse gas. Greenhouse gases are responsible for the radiative equilibrium on Earth. Higher concentrations of greenhouse gases in the air mean higher temperatures on Earth. The CO2 levels are steadily increasing. So we are probably facing further global warming.
And your problem with this what, exactly?
Mortkat wrote:You say we live on the surface--Indeed--but you do not appear to be aware of problems regarding measurement of temperatures on the surface of the earth- specifically, the heat island effect.
Yes I am. Does satellite data suggest we are, in reality, observing sinking global temperatures? Or does satellite data back up the measurements on the surface, regardless of the "heat island effect" theory?
Mortkat wrote:Changes in land use will cause changes in average ground temperature. Cities are hotter than the surrounding countryside.
Here are some specific examples( source- United States Historical Climatological Network)
New York, New York-- average yearly temperature rise from 1930 to 2000-54 degrees to 55 degrees.
Albany, New York- average yearly temperature DECREASE from 1930 to 2000--48.2 to 47.2
Charleston, South Carolina- average yearly temperature INCREASE from 66.4 F to 66.6 F
Greenville, South Carolina- average yearly temperature DECREASE from 1930- 2000 61.4 F. to 60 F.
Sure. Now, percentagewise: how much of the data stems from big, sprawling cities? How much comes from remote locations in the countryside?
Mortkat wrote:Now, according to my source, Earth Report 2000( mentioned earlier)
I remember, Ronald Bailey....
Mortkat wrote:QUOTE:
"The failure of the satellite data to verify global climate model predictions seriously challenge the idea that greenhouse gas emissions are likely to cause significant global warming in the next century"
Excellent! "The failure of the satellite data to verify global climate model predictions". What perfect semantics! Now, do you realize the difference between
a) "The failure of the satellite data to verify global climate model predictions" and
b) "The failure of the satellite data to verify surface temperature measurements" ??
Do you? Well, let me tell you. Satellite date confirms the surface measurements. Sure, there might have been a climate model that predicted a 10° temperature rise by 2005. Then you're right when you're saying "the satellite data failed to verify the global climate model predictions". Nevertheless, satellite data actually confirms a current trend in global warming.
Temperature measurements show that the average annual temperature has increased 1° C since the 1880s. During this time, the global annual temperature rose from an average value of 13.6 to 14.6° Celsius. The largest increase occurred between 1960 and the present when temperatures increased 0.7° Celsius in just 40 years. No satellite data contradicts that.
Mortkat wrote:Now, with regard to your doubt concerning the accretion of CO2.
DE Parker in the Journal of Geophysical Research -article-- Interdecadeal changes of surface temperatures SINCE the late nineteenth century--99, 14373 ( 1994) reported that most of the observed temperature rise occured before 1940( I NOTED THAT PREVIOUSLY) whereas MOST OF THE ADDITIONAL CARBON DIXOIDE (OVER 80%) ENTERED THE ATMOSPHERE AFTER 1940.
Nope, that's just wrong. Look it up. Most of the observed temperature rise occured during the last 4 decades (3 decades in 1994, obviously).
I don't know who "DE Parker" is, but he hasn't done his homework.
Mortkat wrote:I am afraid, Old Europe, that you neglected to comment on the quite important point which indicated that climate changes as shown by the fact that Greenland, Iceland and Newfoundland were farmed by Vikings in what is known as the Medieval Warm Period( 800-1200 AD). This, as I have mentioned, was before the invention of the Steam Engine.
I didn't. Maybe you didn't read my answer. Yes, there was a Medieval Warm Period. But temperatures today are higher than they ever were during that period, and the rise has taken place in just one century - compared with the Medieval Warm Period, were temperatures went up during several hundreds of years, and went down again during an equally long amount of time.
Do you suggest I'm denying that climate changes? What a ridiculous idea.