We Asked a NASA Scientist: Why is Sea Level Rising? — Why is sea level rising? So |
Rising global sea levels are attributed to the warming climate causing thermal expansion of sea water and ice melt from regions like the Antarctic and Greenland. However, sea level rise rates vary regionally due to changes in ocean dynamics and ‘ice sheet fingerprints’—the effect of significant ice loss from certain areas influencing Earth’s gravity and rotation.So on global scales, sea level is rising really because of our warming climate.The first is what we call thermal expansion.
So what happens is this ice melts, and when it melts, that meltwater flows into the ocean. So again, this causes sea level to go up. On regional scales, the rates of sea level rise can actually be quite different. The ocean doesn’t fill like a bathtub. Different parts of the ocean see more of an effect than others, depending on two main factors.
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