Wednesday, September 22, 2010

Land surface temperature MADNESS! Location problems... SATELLITE TEMPS DIFFER...

9/21/10, "Arctic stations near heat sources show warming over the last century.
  • Arctic stations that are isolated from manmade heat sources
  • show no warming.
The plots of “isolated stations” and “urban stations” below clearly illustrate the differences.
  • All the GISS temperature anomaly maps show the Arctic warming faster than the rest of the globe, especially northern Alaska and Siberia,
but the satellite data shows a different pattern. "...(maps)

"Contrary to GISS claims, many of these stations are actually not “rural” with respect to their siting quality.
  • Many are at airports associated with sizable towns or research stations with sizable staff and infrastructure.
In the Arctic, any town of more than a few families can be a large heat source. In the case of many towns in Russian Siberia, “central heating” takes on a whole new meaning. These towns have a central power plant that provides electricity and steam heat to the whole town. Large pipes, both insulated and un-insulated, carry steam, water, and sewage, up and down the streets to and from each dwelling.
  • These pipes cannot be buried because of the permafrost, so they are elevated, and at street crossings are elevated 4 or 5 meters.
The temperature differential between these pipes and the surrounding air can be 140° C in winter, and even more for a pressurized system.
  • But GISS applies the same Urban Heat Island (UHI) criteria to all stations globally, regardless of the latitude or average temperature.

They look at the satellite night brightness and population to judge whether urban or rural.

  • By GISS criteria, all the stations in the high Arctic are rural;
  • there are no corrections for UHI....
There is very little, if any, global warming. We need to wait until the bottom of the next AMO cycle to get a decent reading of global temperature change. That will be in about 2050 if the AMO cycles as it has since 1850."...

via Climate Depot

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