evidence: Sea level fingerprints have been notoriously difficult to track because of the major fluctuations in ocean levels brought on by changing tides, currents, and winds. That presents researchers with the challenge of trying to detect millimeter level motions of the water and link them to melting glaciers thousands of miles away. [...] The new study uses newly released satellite data from a European marine-monitoring agency that captured more than 30 years of observations around the Greenland Ice Sheet and much of the ocean close to Greenland to capture rising and falling ocean levels from the fingerprint. The satellite data caught the eye of Mitrovica and colleague David Sandwell of the Scripps Institution of Oceanography. Typically, records from this region had only extended up to the southern tip of Greenland, but in this new release the data reached 10 degrees higher in latitude, allowing the scientists to eyeball a potential hint of the seesaw caused by the fingerprint.