Is it still warm winter this year? What are the hazards and benefits of warm winter?

The term "warm winter" was not defined in meteorology in the past, but it is a new meteorological term produced by climate warming in recent years. Referring to the concepts of warm current, warm front and warm air mass in meteorology, climate experts of China Meteorological Bureau divide cold and warm winter into warm winter and cold winter. That is to say, when the average temperature in a certain area in a certain year is higher than the perennial value or the climate average (the perennial value is generally the average of nearly 30 years, and China has been using it according to WMO regulations since 2002 197 1 the 30-year average from 2000), it is called warm winter, otherwise. According to this definition, the average winter temperature in China in 1987-2004 is higher than the average climate in1-1990, that is, -4.7℃, so it can be said that the warm winter phenomenon occurred in 18. However, if the new 65438, 1995/ 1996 and 1999/2000 are adopted, the national average temperatures are -4.3℃ and -4.4℃ respectively, which are lower than the new climate average and cannot be considered as warm winters. Therefore, according to current standards, 2004 is the fourth consecutive warm winter.

Recently, some media reporters reported that the concept of "the average temperature in the whole winter is higher than 0.5 degrees Celsius, which is called warm winter" is incorrect. If this definition is used, the winter of 1995/ 1996 and the winter of 1999/2000 can't meet the standard of warm winter, no matter according to the average of the old and new climate.

The concept of warm winter has a strict scientific definition. Whether it is a warm winter depends on whether the national average temperature in the whole winter is higher than the normal value. So when the temperature is high (relatively warm) at a certain time in winter, it is said to be warm winter, and when the temperature is low (relatively cold) at another time, it is said to be cold winter. Then there will be jokes that winter is warm and cold.

The past year of 2006 was really warm winter weather in China. The temperature is generally high and there is less snowfall.