Global Mean Sea Level

Sea levels aren't actually staying still. This data tracks how much the ocean has risen since 1880, measured in inches. For most of history we relied on tide gauges sitting in harbors. Since the 1990s, satellites have given us a much clearer picture. What's striking is how the rise is speeding up. It went up maybe 2 inches over the first 100 years, but nearly 4 inches in just the last 30 years. Scientists include error ranges because both old tide gauges and new satellites have measurement uncertainty, and different groups process the raw data slightly differently.

Source rows:

140

Coverage:

1880-01-01T00:00:00Z – 2019-12-31T00:00:00Z