What's the difference between weather and climate?

The difference between weather and climate is that the weather time is short and changeable; The climate is long and generally does not change much.

Weather: Like the strong wind in spring, it blows at night and blows open the petals of ten thousand pear trees. How many flowers fall after a stormy night. In the next 24 hours, there will be 6-7 northerly winds in this area, and the temperature will drop by 6-8 degrees Celsius. It's sunny.

Climate: old vines, faint crows, small bridges and flowing water, thin horses on the old road. Kunming has four seasons like spring. Africa's Sahara desert is hot and dry all year round. Long summer without winter.

The main factors affecting climate formation are solar radiation, atmospheric circulation, ground conditions, ocean currents and human activities.

1, solar radiation is the fundamental energy of atmospheric movement. Climate differences in different regions and seasonal changes in the same region are mainly due to the uneven distribution of solar radiation on the earth's surface and its changes with time.

The distribution law of solar radiation on the ground is decreasing from low latitude to high latitude. The climate change of Leng Xia heat in winter in the same area is mainly due to less solar radiation in winter and more solar radiation in summer.

2. Atmospheric circulation: Atmospheric circulation plays a dual role in climate formation. On the one hand, it regulates the distribution of global heat and water vapor and affects the local climate; On the other hand, it is also a climate phenomenon.

Three-circle circulation continuously transports heat from lower latitude to higher latitude, and regulates and balances the heat difference between low latitude and high latitude. Pressure zone and wind zone have great influence on precipitation. The global pressure belt and wind belt and their movements play a decisive role in the formation of the climate on the west coast of the mid-latitude continent. For example, the Mediterranean climate on the west coast of the mainland is alternately controlled by the subtropical high zone and the westerly belt, which forms the climate characteristics of rainy winter and dry summer.

Monsoon circulation is an atmospheric circulation formed on the east coast of the mainland due to the thermal difference between land and sea. Monsoon circulation itself is a kind of climate-monsoon climate. Due to the difference of thermal properties between land and sea, low pressure is formed on land in summer, and the wind blows from the ocean to the land, bringing abundant precipitation; In winter, high air pressure is formed on land, and the wind blows from land to sea, resulting in dry land wind and less precipitation.

3. Ground conditions: The ground is the direct heat source and water source of the atmosphere. Different ground conditions directly affect the hydrothermal conditions in the atmosphere.

Specific heat capacity mainly affects the size of temperature change, the formation of land-sea wind and monsoon; The location of land and sea mainly affects precipitation and temperature difference; Topographic factors affect the distribution of water and heat; The ground reflectivity affects the solar radiation energy obtained on the ground.