Why is the weather in Beijing so changeable?

(1) Climate has a significant impact on people's health and mood: We know that climate has an impact on some diseases, such as arthritis and heart disease. The climate can also make people feel irritable. Therefore, people should master these laws, give full play to their subjective initiative, exercise restraint when they are upset, and pay attention to protecting the sick.

(2) The influence of humidity on people: rainy days will make people feel depressed. Of course, this bad mood is partly due to social factors. However, research shows that more people will get depression on humid days; The low air pressure before it rains on cloudy days will make school-age children fidget.

(3) the influence of sunshine on people: sunshine is really good for mood, especially in winter. On sunny days, people will be more willing to help others and abide by social order. But high temperature and sunny days in summer are exceptions.

(4) What is the relationship between dry and hot wind and bad mood? In many countries, such as the United States, Switzerland and Israel, this dry and hot air will increase mental disorders. People will be inefficient, unresponsive and easily angry. We think this is because this wind reduces negative ions in the air, which is good for people. They can improve people's brain function and improve their mood. Positron has the opposite effect Some surveys show that people will be extremely active and excited before a rainstorm. We think this is related to the change of charged particles in the air. Lightning can increase negative ions in the atmosphere and make people feel happy.

(5) Influence of atmospheric pressure: The change of atmospheric pressure will cause many health problems. When the atmospheric pressure changes, the cavity in the human body expands, such as: the decrease of atmospheric pressure will cause sinus problems, leading to sinusitis and sinus expansion; The increase of air pressure has a great influence on human joints; A drop in air pressure can also make people restless.

(6) Influence of extremely cold and hot climate on heart disease patients: Extreme temperature, especially extremely cold weather, will make people's cardiovascular system overworked. More people will die of heart disease in winter than in other seasons. Because when the temperature is very low, blood flows into the body from the skin, and the heart should beat the blood hard to keep the body warm. Therefore, some strenuous activities in cold climate will increase the burden on the heart. Another death peak of heart patients is in summer. Summer heat intensifies the beating of the heart, makes people sweat more and raises blood pressure. Extreme cold and hot weather will overload people's immune system, thus weakening people's resistance. Hot weather makes people vulnerable to infectious diseases such as malaria. Colds and respiratory infections are common in winter, because low temperature weakens the body's resistance.

(7) Who are particularly sensitive to climate? A few people are particularly sensitive to climate, but they are also sensitive to environmental problems such as noise pollution. Comparatively speaking, the elderly are more sensitive to climate than young people, because their cardiovascular system is weak. The weight is the same. Fat people are uncomfortable in hot weather, and thin people are uncomfortable in cold weather. In the experiment, men and women have almost the same response to climate.

(8) Influence of air conditioners and dryers: These devices create an artificial indoor climate to avoid the influence of extremely cold, extremely hot and extremely humid climate, which is very good. However, air conditioning will absorb negative ions in the air, which will have adverse effects on brain function and mood. Air conditioning will produce a lot of cations, and staying in this air for eight hours will cause headaches. In the past, we thought that indoor headache was caused by carbon monoxide, but now research has proved that the increase of cations is also one of the reasons.

In the experiment, using an ion generator to generate negative ions can improve the mood of office workers. Negative ion air is good for people's mood. One of the reasons why people like to travel to mountainous areas is that there are a lot of negative ions in the air there.

(9) The influence of climate on sleep: It is difficult for people who are afraid of heat to fall asleep in summer. Sleep research experiments show that when the air pressure is higher or lower than normal, people will feel sleepy, and the reasons remain to be studied.

(10) What is the best climate for physical and mental health? The temperature is about 2 1℃, and it is better to have some breeze and not too strong sunshine.

The human body is quasi-constant temperature. In order to keep the body temperature constant, it is necessary to constantly discharge the heat generated by metabolism to the outside world, so that the skin temperature is higher than the outside temperature. When the temperature is close to the skin temperature, the heat dissipation is not smooth, which will cause discomfort. At this time, the human body will increase perspiration and release heat in the form of evaporation and heat dissipation. According to the research, when the general temperature is 30-32℃ and the relative humidity is 85%, or when the temperature is 38℃ and the relative humidity is 50%, or when the temperature is 40℃ and the relative humidity is about 30%, people's body temperature regulation ability will be difficult, resulting in heatstroke.

1In the summer of 997, the seasonal average temperature in most areas north of the Yangtze River was higher than 1-2℃, and the average temperature in most parts of North China, Northeast China, Northwest China and Western Xinjiang from mid-June to late August exceeded the highest value in the same period since 1949.

According to incomplete statistics of relevant units, only before July 10, there were 180 traffic policemen suffering from heatstroke in Beijing. During the period of high temperature, the number of patients in major hospitals increased sharply. Compared with the same period of last year, the outpatient and emergency departments in Friendship Hospital increased by 1/3, and the number of severe cases increased by 2-3 times. Children suffer from colds, fever, colds and intestinal diseases, and the maximum number of outpatient visits in children's hospitals is more than 4,500. The hot weather makes many people flock to swimming places and natural waters to cool off. According to statistics in early August, more than 50 people drowned in Beijing.

The occurrence and development of human diseases are often related to seasonal climate change. The weather in spring is characterized by variability, and "late spring cold" and sandstorm weather often occur. This period is the high season of respiratory infectious diseases, and diseases such as cold, rubella, chickenpox, measles, meningitis and scarlet fever are often prevalent, and the incidence of myocardial infarction in middle-aged and elderly people is also very high. Japanese encephalitis mostly occurs in summer and autumn; Gastrointestinal diseases such as cholera and dysentery are more common in summer.

According to the research in Shanghai in recent years, there is a certain relationship between human mortality and seasonal changes. After the late autumn, the death toll increased sharply; Winter is the peak of death toll, and the coldest February is twice that of May and June. The daily average temperature is between 15-25℃, and the death toll decreases, but under the attack of summer heat wave, especially when the daily maximum temperature reaches above 35℃, the death toll suddenly increases. These research results show that seasonal climate change and severe weather change do have a great impact on human health.

Modern scientific research has proved that people can use favorable weather and climate conditions to treat diseases, which is commonly called climate therapy. Such as mountain climate convalescence, seaside climate convalescence, desert climate convalescence, forest climate convalescence, etc. Patients can choose a convalescent place according to their symptoms.

We know that weather and climate are closely related to human health, so it is very necessary to master the changes of weather and climate. First, increase clothes in time to adjust the human body's adaptability to weather changes; The second patient can take medicine in advance to prevent problems before they happen; Third, we should avoid other diseases caused by influenza. In a word, strengthening exercise, improving physical fitness and avoiding its adverse effects on the human body are important ways for everyone to keep healthy.

Climate change has a direct or indirect impact on human health. Weather caused by climate change, such as heat waves, floods, storms, abnormal climate events and sea level rise, directly affects human health and life. At the same time, climate change will also affect the supply of fresh water resources, aggravate air pollution and have an indirect impact on health. More importantly, climate change will cause corresponding changes in ecology and environment, leading to the imbalance of global ecosystem functions. With the global warming, malaria, dengue fever and other diseases spread by insects will probably affect 40% ~ 50% of the world population, which will greatly threaten human health and daily life. In high temperature and high humidity areas, climate warming may lead to the breeding of mosquitoes and flies, and increase the incidence of cholera, malaria and yellow fever. At the same time, due to the systematic changes in temperature and precipitation areas, the distribution of diseases spread by vectors and viral diseases may change fundamentally and move to higher latitudes, leading to the expansion of the epidemic range of biological diseases such as malaria, schistosomiasis, trypanosomiasis, yellow fever, plague and cholera, and more people are at risk.