Sea-level rise and us

With many millions living in coastal communities around the world, sea-level rise is a major concern. The information we get from satellites is essential for understanding how fast our seas are rising so that decision-makers are equipped to take appropriate mitigating action. Satellites carrying altimeter instruments systematically measure the height of the sea surface so that sea-level rise can be closely monitored. Altimetry measurements over the last 25 years show that, on average, sea-level is rising about 3 mm a year, and this rise is accelerating