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Space/Science » in reply to re: Arrell has a point. That's kind of a nitpick.

re: Arrell has a point. That's kind of a nitpick.
gbaikie — (archived)

I just want to establish what I assume most people know- that the effects from global from CO2 is suppose to affect night time and winter temperature the most. And mostly affect temperate and the arctic regions.

First here is graph of average arctic temperature:

http://maps.grida.no/library/files/trends-in-arctic-temperature-1880-2006.jpg


Caption to graph:
"Trends in Arctic temperature, 1880-2006. A history of Arctic land temperature anomalies from 1880 through 2006 is shown in this figure. The zero line represents the average temperature for 1961–1990. In the late 1800s the Arctic was relatively cold, although there is some uncertainty around these early temperature estimates. The Arctic warmed by about 0.7ºC over the 20th century. There was a warm period in the 1920s to 1940s and cold periods in the early 1900s and in the 1960s. Over the last decade the temperatures were about 1.0ºC above the 20th century average."

And:
Title: "Global warming lurks principally at night - nighttime temperatures rose more than daytime temperatures between 1953 and 1993"

"Between 1950 and 1993, globally averaged minimum temperatures rose at a rate of 0.186 [degrees] C per decade, whereas maximum temperatures increased at only 0.088 [degrees] C per decade, according to David R. Easterling of the National Climatic Data Center in Asheville, N.C., and his colleagues in the United States, England, Russia, New Zealand, and Australia. The scientists report their findings in the July 18 Science."
http://findarticles.com/p/articles/mi_m1200/is_n3_v152/ai_19647189

So, if above measurements are accurate, one has more than twice the increase in temperature showing up in night time temperatures. And in the arctic one has around 50% more warming than globally.

And average tropical temperatures do not seem to be rising.

Now, I mention all this because it hit me that perhaps this idea of CO2 caused warming affecting night time and temperate to polar regions the most, might have somehow gone out of favor- or there is some disagreement about this that I somehow missed.
Now, from a PR angle I can see how this might interfere a bit with hot summers often hyped.

But it seems to me that if one wants to measure any warming affect from CO2, one measure the area where one is getting the largest measurable effect- the night time temperatures. The article I cite is 1997- 11 years ago, I would liked a more recent article, but didn't find one.

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