Written by: Ouyang Dehao
2020-08-31 20:55Last update date: 2020-08-31 20:55
The average temperature in Hong Kong last autumn was 26.1 degrees, which was the warmest autumn ever recorded by the Observatory. The Observatory announced the latest autumn quarterly forecast (September 2020 to November 2020). Due to the high water vapor along the South China coast, Hong Kong is expected to receive normal rainfall (365 to 567 mm) or more (above 567 mm) this autumn. Higher. Affected by global warming and urbanization, there is a higher chance that the temperature is expected to be normal (24.8 to 25.2 degrees) to high (above 25.2 degrees).
The Observatory pointed out that due to global warming and local urbanization, Hong Kong's autumn temperature has a clear long-term upward trend. (Profile picture)
La Niña has no effect on autumn rainfall
According to the Observatory, in the past month or so, the water temperature in the central and eastern equatorial Pacific has remained normal to low. Based on the latest ocean observation data and forecasts from multiple climate models around the world, it is expected that the water in the central and eastern equatorial Pacific will be The temperature will gradually decrease, indicating that La Niña may begin to develop. However, the Observatory pointed out that this year La Niña had no significant impact on Hong Kong's autumn rainfall.
However, the Observatory pointed out that most climate models around the world predict that there will be more water vapor transported to the coast of South China this autumn, and therefore more rainfall. Hong Kong is expected to receive normal rainfall (365 to 567 mm) or more (above 567 mm) this autumn. The chance is higher.
The Observatory said that based on the latest ocean observation data and forecasts from multiple climate models around the world, it is expected that the water temperature in the central and eastern equatorial Pacific will gradually drop in the next few months. (Photo of the Observatory)
There is a clear upward trend in autumn temperature in Hong Kong
The Observatory said that due to the effects of global warming and urbanization, Hong Kong’s autumn temperature has a clear long-term upward trend, and the temperature is more likely to be normal (24.8 to 25.2 degrees) to high (25.2 degrees or more). Climate models around the world also predict that temperatures in southern China will be normal to high this autumn.
In addition, according to the Observatory's data, the average temperature in Hong Kong in the autumn of 2019 was 26.1 degrees, which was the warmest autumn since the Observatory's records (tied with 2015), 1.1 degrees higher than normal.
The Observatory said that more water vapor will be transported to the coast of South China this autumn. It is expected that Hong Kong has a higher chance of normal or excessive rainfall this autumn. (Photo of the Observatory)
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