Problem 19CQ
When there is a global heating trend on Earth, the atmosphere expands and the length of the day increases very slightly. Explain why the length of a day increases.
Solution
Step 1
Since the water in the ocean is warm due to climate change, the water in the sea expands and it raises the level of the sea. This changes the ocean's circulation and given out more pressure on the ocean in some areas.
The pressure change across the globe will not be uniform, because of global warming that causes the ocean to warm more in some place.
These differences will redistribute the Earth's ocean water, pushing it from the deep water and onto coastal areas, towards the North pole. This is why the length of the day increases very slightly.