4 ms·
But how do you account for water level going up and down on it's own just over a single day?
by Kaiyou 6y ago
But how do you account for water level going up and down on it's own just over a single day?
- coldpie 6y agoIt's not a direct measurement. If you put 100 mL of water into a cup, it will raise the water level of the cup by some number of cm. You can calculate this based on the topography of the cup. Similarly, we can calculate the volume of 600 btons of ice when turned into water, and we know the surface area the oceans, so we can calculate the ocean level rise of inserting 600 btons of ice worth of water into the oceans. In addition, they do do direct measurements of ocean level. You can learn more about one way these measurements are performed here[1]. That direct measurement tells us the real rise each year. That in combination with the calculated measurement I describe above allows the scientists to conclude that the loss of ice mass in Greenland contributed about 40% of the total sea level rise in 2019. [1] https://climatekids.nasa.gov/sea-level/ https://climatekids.nasa.gov/sea-level/
- magicalhippo 6y agoYou could just average it out. The phase of any waves should be essentially random from day to day, so should average out quite quickly I imagine.
- ses1984 6y agoYou don't take measurements over a single day, that's what I meant by integrating. You take measurements over a long period of time and analyze them.