Global Sea Levels Rose by 0.27 cm from 2021 to 2022 - by spacewriter
The culprit for all this is human-caused climate change. It’s driven by the excess amounts of greenhouse gases like carbon dioxide humans pump into the atmosphere. Climate change has a number of effects across the globe, but it’s particularly obvious in Earth’s ice sheets and glaciers. Just this past year alone, the Antarctic ice sheet has experienced above-average melting, even accounting for summer temperatures.
This image of Earth shows sea level measured by the Sentinel-6 Michael Freilich satellite in 2021. Red areas are regions where sea level is higher than normal while blue indicates where it’s below normal. The satellite collects measurements for about 90% of Earth’s oceans.The best and most accurate way to track ocean height rise is with space-borne instruments on satellites. The U.S.-French TOPEX/Poseidon mission began measuring sea surface height in 1993.
An illustration of the Sentinel-6 Michael Freilich satellite. Launched in November 2020, it is one of the latest in a series of spacecraft – starting with TOPEX/Poseidon in 1992 and continuing with the Jason series of satellites – that have been gathering ocean height measurements for nearly 30 years.The 30-year satellite record not only shows long-term trends but allows scientists to see through naturally occurring shorter-term shifts.
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