What do you mean by meteorological conditions?

Meteorological conditions refer to the hydrothermal conditions of various weather phenomena. The main meteorological data include: average air pressure, annual average temperature, extreme maximum temperature, extreme minimum temperature, average relative humidity, annual average precipitation, annual average evaporation, average wind speed, maximum wind direction, sandstorm days, maximum frozen soil depth, maximum snow depth and annual sunshine hours.

Sunshine hours refer to the time when the sun actually shines in a place. In a given time, sunshine hours are defined as the sum of the time periods when the direct solar irradiance reaches or exceeds 120W/m2, with one decimal place as the hour unit. Sunshine hours can also be called actual hours.

Extended data:

Air pressure is the atmospheric pressure acting on the unit area, which is equal to the weight of the vertical air column extending upward to the upper limit of the atmosphere. Air pressure is related to altitude, temperature and other conditions. It generally decreases with the increase of height. In the horizontal direction, the difference of atmospheric pressure leads to the flow of air. A unit of air pressure, usually the height of a mercury column.

For example, a standard atmospheric pressure is equal to the weight of a 760mm high mercury column, which is equivalent to bearing an atmospheric pressure of 1.0336kg in an area of one square centimeter. Internationally, "hectopascals" are used as the air pressure unit. After conversion: a standard atmospheric pressure = 10 13 hectopascals (millibars). The annual average pressure in Shenzhen is 1009.8 hectopascals.