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Heating and Cooling Degree-Days in Turkey
Kadioglu, M., Sen, Z. and Gültekin, L.  2001.  Variations and trends in Turkish seasonal heating and cooling degree-days.  Climatic Change 49: 209-223.

What was done
Trends in both heating degree-days (HDDs) and cooling degree-days (CDDs) were analyzed at 74 stations located throughout Turkey over the period 1930-1996.

What was learned
Much of Turkey displayed no significant trend in the annual number of HDDs or CDDs over the period of record.  However, where significant trends did exist, they were found to be inconsistent with what is predicted by high-resolution global climate models.  Decreasing trends in the number of CDDs were found in all seasons of the year in the eastern part of Turkey (signifying a decreasing trend in mean daily temperature in all seasons); while increases in HDDs were reported for the fall in the region near the Black Sea (signifying a decreasing trend in mean daily temperature in the fall). In other words, over the past 70 years, some parts of Turkey have gotten colder, not warmer.

What it means
We concur with the authors when they say the results of their study "do not provide empirical support for the model simulations" of CO2-induced warming in Turkey.  They do, however, provide support for our claim that there has been no global warming over the past 70 years.