In the north temperate zone, the meteorological summer is from May 2 1 day (Xiaoman) to August 22 (midsummer); In the south temperate zone, the meteorological summer is165438+1October 2 1 (light snow in the northern hemisphere) to February 18 of the following year (rain in the northern hemisphere).
Westerners generally say that the summer of solstice is divided into summer. In the southern hemisphere, 65438+February, 65438+ 10 and February are generally designated as summer. In the climatological sense, it is summer when the average temperature exceeds 22 degrees for five consecutive days, and autumn when the average temperature falls below 22 degrees for five consecutive days.
Extended data
Matters needing attention in summer:
First, pay attention to adding some bitter food. Alkaloids contained in bitter food have pharmacological effects such as relieving summer heat, promoting blood circulation and relaxing blood vessels. Eating bitter foods such as bitter gourd, bitter vegetables, beer, tea, coffee and cocoa in hot weather can not only clear the heart and relieve annoyance, but also stimulate appetite, strengthen the spleen and benefit the stomach.
Second, pay attention to supplement salt and vitamins. It is best to supplement vitamins B, C, Ca, Na and other nutrients every day in high temperature season, which can reduce the consumption of sugar and tissue protein in the body and is beneficial to health. You can eat more foods rich in the above nutrients, such as watermelon, cucumber, tomato, beans and their products, animal liver and kidney, shrimp skin and so on.
Third, be careful not to eat too much cold drinks and beverages. When the climate is hot, eating some cold drinks or drinks properly can play a certain role in dispelling summer heat and cooling down. Ice cream, ice bricks, etc. Made of milk, egg powder, sugar, etc. Eating too much will stimulate the gastrointestinal tract, cause irregular contraction, and induce abdominal pain, diarrhea and other diseases.
There are many kinds of drinks, most of which have low nutritional value. Might as well drink less. Drinking more will damage the spleen and stomach, affect appetite, and even lead to gastrointestinal dysfunction.
Baidu Encyclopedia-Summer