UPDATES & NOTICES
25 Oct 2024
8 May 2024
“Geography E-learning Package about Climate Change, Version 2.0” is coming soon. It will bring the latest climate data, detailed lesson plans and interactive online games, etc. Stay tuned!
1 Sep 2023
CLIMATE NEWS
Who is in charge of global warming?
There has been an argument to dismiss concerns about the rising emission of carbon dioxide, saying that the most important greenhouse gas is water vapour which is much more abundant than carbon dioxide in the atmosphere and more powerful than carbon dioxide in absorbing infrared radiation. However, the scientific fact is that carbon dioxide is ranked number one of the factors contributing to the Earth's warming climate.
How do scientists reconstruct the temperature tens of thousands of years ago?
Snowfall in the polar regions accumulates from year to year. As snow at the surface gets buried with time, it is compressed to form solid ice. Lower sections of the ice sheet are therefore older than the upper ones. Ice cores drilled from the Greenland and Antarctica ice sheets containing proxy data of air temperature can then be used to estimate temperature in the past.
Under the influence of global warming, are tropical cyclone activities changing?
Tropical cyclone is one of the most destructive weather systems on Earth. The possible change in tropical cyclone activity in a changing climate is a matter of great concern to the public and decision makers.
An Introduction to Phenology
"The duck knows first when the river becomes warm in spring" ;"A falling leaf heralds the coming of autumn". The above two Chinese sayings describe the phenological phenomena of the onset of spring and autumn respectively.