What does tropical depression mean? Tropical depression interpretation

1. Tropical depression (abbreviation of tropical depression) is a kind of tropical cyclone. It belongs to the weakest level of tropical cyclone (the maximum wind speed is below 62 km/h). The tropical depression consists of many upward convective clouds. It is formed by clouds formed in the air unstable area of the tropical ocean. Tropical disturbance? Here we go. Tropical cyclones in the early stage of development, or tropical cyclones weakened after strong tropical cyclones landed, are all tropical depressions.

2. If the tropical depression continues to strengthen, it will develop into a tropical storm and be named as a tropical storm by the Meteorological Agency. China has accepted international rules since 1989. Previously, China's meteorological department stipulated that the maximum wind speed of tropical cyclones near the ground center was 17.2-32.6m/s (that is, the wind force was 8- 1 1), which was called typhoon. Maximum wind speed? 32.6m/s (wind 12 or above) is called a strong typhoon; The maximum wind speed10.8 ~17.1m/s (wind force 6 ~ 7) is called tropical depression.

3. Tropical depression has different names in different regions. For example, it is called tropical depression in the Pacific Northwest and tropical depression in the Bay of Bengal. Deep depression? . It is a low-pressure system formed in the tropical ocean. On the surface weather map, it is a circulation (at least a circle) that can draw a closed isobar. Its English name is Tropical Compression (TD for short). As long as the circulation containing TD is seen on the surface weather map, it is a tropical depression (usually several tropical depressions exist at the same time). On weather maps, the letter L is sometimes used to indicate tropical depression.