Weather and climate issues

Guangdong as a whole has a subtropical monsoon climate, and the south of the Tropic of Cancer has a tropical monsoon climate. Global warming is on the increase. Judging from the global temperature change, it is mainly warming up. "It's getting colder in winter and hotter in summer" is only a phenomenon in some parts of the world.

The global climate is mainly influenced by the biosphere. The composition of climate system and its influence on climate change: the global climate system refers to a highly complex system composed of atmosphere, hydrosphere, cryosphere, lithosphere (land surface) and biosphere, and there are obvious interactions among these parts. Under the impetus and external compulsion of this system (such as volcanic eruption, solar change, atmospheric composition change and land use change caused by human activities), the climate system evolves continuously with time (gradual change and sudden change), with climate change and variability on different time and space scales (monthly, seasonal, interannual, interdecadal and centennial scales).

There are many reasons for the change of climate system, which can be summarized into two categories: natural climate fluctuation and the influence of human activities. The former includes solar radiation changes, volcanic eruptions and so on. The latter includes the increase of greenhouse gas concentration in the atmosphere, the change of sulfide aerosol concentration, land cover and land use change caused by human burning fossil fuels and deforestation.