A Mild Winter

It was too warm this winter. The average temperature from December 2006 to February 2007 was equal to the highest average temperature in winter, which was recorded in 1949. Also, we had little snow. What happened to the climate?
One possible reason is El Nino. It is temperature fluctuations in surface waters of the offing of Peru. It is called El Nino, the Christ child, because it is usually noticed around Christmas season. El Nino causes abnormal weather in the whole world. It causes a mild winter in Japan.
Another possible reason is a flow of air. Because of the flow at the beginning of this winter, the cold air of the Arctic could hardly go to the south. A persistence of this condition is one reason for the mild winter.
This winter, we have had a little snow on the side of the Sea of Japan, and have had much rain on the Pacific side. Many places recorded the least amount of snow. It caused much damage to business at ski resorts. In Tokyo, we had the first snow of the season on the 16th of March. It became a new record.
What do you think about this mild winter? I gave two possible reasons to you. There are more possible reasons, for example, global warming is a likely reason. Also there have been many effects from this mild winter. The mild winter became a slightly important problem. How about thinking or studying about this more deeply? This problem could be concerned with your future.

116-3 Nanami Miura