How fast is the sea level rising?

Answer 1

Measurements show that the sea level rose by 20 centimetres during the twentieth century. The latest scientific estimates are that it will rise a further 90 to 150 centimetres over the course of the twenty-first century, depending in part on what efforts we make to reduce our greenhouse emissions.

Another AnswerSatellite measurements, however, show global sea level rose merely 0.83 inches during the first decade of the 21st century (a pace of just 8 inches for the entire century), and has barely risen at all since 2006. This puts alarmists in the embarrassing position of defending predictions that are not coming true in the real world. Another AnswerMeasurements show that the sea level rose by 1.8 mm a year during the twentieth century. Between 1993 and 2005 the rise was about 3 mm per year. From 2005 till now the rise has been slower, measured at about 1 mm per year. Another AnswerFrom 2005 till now the rise has been slower, measured at about 1 mm per year, the least rise in recorded history. This agrees with data that shows that since 2007 the arctic has gained 26% more summer ice. A:According to the US Environment Protection Agency,

"Over the past 100 years, the average sea level around the world rose by nearly 7 inches (17.5 cm)."

See the graph at their link below, which also explains:

• Why it's rising
• Why it's rising faster in some places
• What will happen in the future
• Why does it matter

Current satelite data has established that the seas are rising at a rate of 0.83 inches per decade. Sea levels rose by 7 inches during the course of the 20th century.

A:Sea levels rose by only 20 centimetres (8 inches) in the twentieth century, but that rise mainly occurred in the last decades of the century, as atmospheric carbon dioxide levels rose faster. During the last decade, mean global sea levels have been rising at approximately 2.9 to 3.4 millimetres per year but the rate is exponential. A:A peer-reviewed study published in 2009 titled "A new assessment of the error budget of global mean seal level rate estimated by satellite altimetry over 1993-2008" suggests that there has been an observed reduction in the prior rate of sea level rise by 2mm/yr from 2005 (a 60% reduction from the 1993 to 2005 rate) to a level of 1mm/yr.