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Southeastern USA Temperature Trends

The temperature trends in these states were analyzed from a collection of sites in the GISS data set. The raw data set was used; all temperatures are in Celsius. Here are the locations used, with the annual average temperature for the first and last years in the GISS record and with several other data points for reference. The state is listed with its locations. Here is an Excel spreadsheet that shows the distribution of locations (to get a roughly similar square miles per location in each region). Here is a text file that lists the locations in all the states and a few samples of the temperatures. Here is a Word document with the links to the GISS data for all the locations, as well as the latitude and longitude (from GISS) for each location.
Since the anthropogenic global warming debate is about CO2 levels, Each graph plots the 10-year average of the temperature anomalies (departure for the raw temperature from homogenized value then averaged, to smooth out peaks/valleys seen in a shorter span) against the scaled CO2 levels  an average as CO2 has both an annual cycle and a seasonal cycle. The CO2 values are scaled so the plot of them with the temperatures fit in the single graph. This scaling for CO2 data (also an average as CO2 has both an annual cycle and a seasonal cycle) was done by visual judgment of the relationship over time, not for a data point from one's plot to align with the other's data point. These graphs are for only the simple visual comparison not a numerical comparison (between a temperature and CO2).

The following graphs are for the states in the Southeast Region, by their names in alphabetical order like this:

AL,AR,FL,GA,KY,LA,MS,NC,OK,SC,TN,TX


Tinkering with the CO2  scaling in the above graph can get overlaps of the two trends. However since the temperature trends go up and down while the CO2 level never goes down the two charts will never coincide.

These graphs show the temperature trends for states in this region. The expectation with AGW (global warming due to man-generated increasing CO2 levels) would be a generally  increasing temperature, not falling. when CO2 goes up. Instead there is a warming trend near the start of the 20th century, followed by a cooling trend in the second half of the century, followed by a recent warming trend. The past few years have been cooler in this region.

Here are the annual  temperature anomalies for these states with their 10-year averages.


AL9ten
AR9ten
FL9ten
GA9ten
KY9ten
LA9ten

MS9ten
NC9ten
OK9ten
SC9ten
TN9ten
TX9ten

Locations across the Southeast region and the United States exhibit similar warming and cooling trends across the past century.


created - Feb. 2010
last change - 04/11/2010
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