What caused the high temperature alarm in Sichuan?

The reasons for the early warning of high temperature in Sichuan are: the direct point of the sun moves from south to north in summer, the height of the sun in the northern hemisphere becomes larger, the sunshine time becomes longer, the solar heat energy increases and the temperature rises. The upper air is controlled by a single heating pressure, the weather is clear, the cloud amount is less, the atmosphere weakens the solar radiation less, and the solar radiation increases, which makes the near-surface temperature rise strongly. If it is controlled by the heating pressure for a long time, it will form a continuous high temperature weather.

High temperature alarm, that is, it is expected that the maximum temperature will be higher than 35℃ in a certain period of time in the future. It is to arouse people's vigilance and do a good job in heatstroke prevention and cooling in time.

The warning signal is divided into three levels, which are represented by yellow, orange and red respectively.

(A) high temperature yellow warning signal

The maximum daily temperature will be above 35℃ for three consecutive days.

(2) High temperature orange warning signal

The maximum temperature will rise above 37℃ within 24 hours.

(3) High temperature red warning signal.

The maximum temperature will rise above 40℃ within 24 hours.