This will be the last of the urban heat island posts. Tonight we will look at Vancouver, Beijing and London. Below is Vancouver in 1986. Notice that the hottest (reddest parts of the city are rather limited in this photo.
By 2004, the red has spread. Compare how much larger the hottest areas now cover.
The urban heat area has grown and the temperature risen over the 22 year difference. Placing a thermometer in the middle of this for that period of time will make it look like the world has gotten hotter, which it has because Vancouver has gotten hotter because it uses more energy today than it did in 1986
London also shows the hottest temperature in the central city area. Urban areas are hot and putting thermometers within the boundaries of major cities is guaranteed to make it look like the globe is warming.
Then one of my favorite spots on earth, Beijing, China where I lived two wonderful years. The urban heat island once again rears its ugly heat, yet the IPCC crowd, like Phil Jones of the Climate Research Unit, published that there is no urban heat island effect in China. What hogwash that is.
It is the height of scientific incompetence for the AGW global warming hysterics to claim that waste heat from the cities don't matter. As long ago as the 1970s, climatologists knew that waste heat would heat cities up mercilessly. The modern hysteriacs ignore this.
“By the year 2000, experts estimate, the urban megalopolis of Bosnywash—the continuous city covering 11,000 sq miles from Boston through New York to Washington, D. C.—will be pourint out manmade heat equal to 50 percent of the sun’s heat in winter, 15 percent in summer.”
“The climate will be warm, as anyone knows who lives in a big city—from 1 to 3 deg C warmer than if the city were not there.” Asphalt streets and concrete pavements soak up sunlight.” Lowell Ponte, “Global Cooling, (Englewood Cliffs, NJ: Prentice Hall, 1976), p. 27
Even Stephen Schneider knew this.
"The urban heat island is a phenomenon well known to city dwellers, even if most haven't heard the name. Because of their intense energy consumption and unnatural physical characteristics, as pointed out earlier, cities are often hotter downtown (especially at night) than the surrounding countryside. The heat island is most noticeable at the center of cities, and the mean annual isotherms (lines of constant temperature) of Paris, for instance, are as much as 2° C (3.6° F) warmer at the city center than out of town (Figure 21). Very similar conditions can be shown for other cities, as summarized in an excellent article by Helmut Landsberg, a noted senior climatologist at the University of Maryland."Stephen Schneider, The Genesis Strategy, (New York: Plenum Press, 1976), p. 154
Yet, James Hansen only gives 0.3 deg correction for the urban heat island
J. Hansen et al, “A Closer Look at United States and Global Surface Temperatures,”
J. Geophys. Res., 106, 23947-23963
The magnitude of the adjustment at the urban and periurban stations themselves, rather than the impact of
these adjustments on the total data set, is shown in Plate 2l. The adjustment is about -0.3°C at the urban stations and
-0.1°C at the periurban stations. In both cases these refer to the changes over 100 years that are determined by
adjusting to neighboring “unlit” stations.
available at http://pubs.giss.nasa.gov/docs/2001/...ansen_etal.pdf p 6
And the IPCC guys correct city heat even less.
Accordingly, this assessment adds the same level of urban warming uncertainty as in the TAR: 0.006°C per decade since 1900 for land, and 0.002°C per decade since 1900 for blended land with ocean, as ocean UHI is zero. Climate Change 2007: Working Group I: The Physical Science Basis” IPCC Fourth Assessment Report: Climate Change 2007
A look at any of the urban heat thermographs that I have posted show that the IPCC claim is absolute, utter rubbish. Yet they claim that they are the ones with the truth. Of course, they want more research funds for their labs and maintaining the myth that they are actually doing something right is necessary to obtain that grant money, as they live high off the backs of the tax payers.