QUOTE=PeterM;517642][QUOTE=weeasle;517632]
Can you supply me the data for - The sea level changes in the last 100 years? What is the rate of change at the moment? What are future increases based upon? Please, this information would be very useful.
Sure:
http://en.wikipedia.org/wiki/Current_sea_level_rise
Current sea level rise has occurred at a mean rate of 1.8 mm per year for the past century, and more recently at rates estimated near 2.8 ± 0.4to 3.1 ± 0.7 mm per year (1993-2003). Current sea level rise is due partly to
global warming, which will increase sea level over the coming century and longer periods. ... Based on an analog to the deglaciation of North America at 9,000 years before present, some scientists predict sea level rise of 1.3
metres in the next century. However, models of glacial flow in the smaller present-day ice sheets show that a probable maximum value for sea level rise in the next century is 800
millimetres, based on limitations on how quickly ice can flow below the
equilibrium line altitude and to the sea... Hence it is very likely that these terms alone are an insufficient explanation, implying that 20th century climate change has made a contribution to 20th century sea level rise. Recent figures of human, terrestrial impoundment came too late for the 3rd Report, and would revise levels upward for much of the 20th century.... Statistical data on the human impact of sea level rise is scarce. A study in the April, 2007 issue of
Environment and Urbanization reports that 634 million people live in coastal areas within 30 feet (9.1 m) of sea level. The study also reported that about two thirds of the world's
cities with over five million people are located in these low-lying coastal areas. The IPCC report of 2007 estimated that accelerated melting of the Himalayan ice caps and the resulting rise in sea levels would likely increase the severity of flooding in the short-term during the rainy season and greatly magnify the impact of tidal storm surges during the cyclone season. A sea-level rise of just 40 cm in the Bay of Bengal would put 11 percent of the country's coastal land underwater, creating 7 to 10 million
climate refugees.
The wikipedia entry is very conservative and balanced you can read the rest yourself... It is always going to be hard for scientists to quantify the link between human induced CO2 and global temperature rise as the earth is such a gigantic complex ecosystem. However, there have been gas and temperature measurements that were performed by captains of ships dating back to before the 18th century...
Here are some more links:
http://www.nodc.noaa.gov/General/sealevel.html
http://www.cmar.csiro.au/sealevel/
http://maps.grida.no/go/graphic/sea_...nd_predictions
"Sea Level rise could bust IPCC estimate"
http://www.newscientist.com/article/...-estimate.html