In article .com, says...

On Oct 9, 11:42 am, (Eric Swanson) wrote:
7 October 2007
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Daily high and low records from the U.S. HCN may be found
hehttp://www.ncdc.noaa.gov/oa/climate/...ords/index.php

Number of Record Highest Maximum = 282
Number of Record Highest Minimum = 466
Number of Record Lowest Maximum = 45
Number of Record Lowest Minimum = 30
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Eric - I asked this about a previous post of yours on record
temperature readings, but here goes again.

Do you have any sense of why we're seeing this striking pattern?
Higher temperature maximums, and higher minimum temperatures for the
day, for dozens of different places around the USA.

Plus record LOWS for minimum and maximum daily papers for a handful of
weather stations, nearly all of them in Utah, Arizona and southern
California.

Does anybody have a plausible explanation as to why these are the
readings we're getting?

I attempted to provide an answer to your questions in reply to the
6 October data. I'm not sure that I'm a good person to provide the best
scientific reply, since my understanding is rather basic, as I've not
been thru the rigorous academic training to achieve a degree.

I've looked at these sort of events for years and my rather simple
scenario is based on the tropic to pole circulation. In Fall, Winter
and Spring, the temperature difference between the tropics and the
polar regions increase. This results in greater flows of air, which
transport latent and sensible thermal energy from the warm tropics
toward the poles. In the NH, the northward flowing air does not move
directly North, but changes direction toward the East as the result of
the Coriolis Effect. Similarly, the returning cold air begins to flow
southward, but then turns toward the West, again the result of the
Coriolis Effect. In both situations, the air motions appear as
clockwise rotating air masses. Where the warm and cold air masses meet,
storms form due to the differences in flow directions and temperatures.
I think that this scenario is essentially the Norwegian Model of
weather from the early 1900's.

Anyway, if the rate of flow increases, as a result of Global Warming,
more warm, moist air moves further northward and then the corresponding
cold air return can flow further back to the south. I suggest that my
crude scenario can "explain" the recent batch of record temperatures, as
well as other similar situations over the past few decades. Of course,
this is not the complete story and I would expect others who have
studied weather and climate might offer a different perspective. Take
it for what it's worth, which may be nothing.

--
Eric Swanson --- E-mail address: e_swanson(at)skybest.com :-)
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