2012-06-22. Global sea-level rise could hit California hard AND Report: Calif. to get seas rising 6 inches by 2030

posted Jun 27, 2012, 11:14 AM by Lisa Ou   [ updated Jun 27, 2012, 11:22 AM ]
| by David Perlman/Jeff Bernard, SFGate. An article relevant to GSS Climate Change chapter 8. Excerpt: Global sea-level rise, induced by the warming climate, will hit California's coastline harder than the other West Coast states over the coming decades and on through the end of the century, according to a new report from the National Research Council. Oceans around the world are rising, but seas around California will rise even higher - by more than 3 feet before 2100, the report says. Tide gauges and satellites show that the rate of sea-level rise has increased steadily since 1900, and with each passing decade, storm surges and high waves will put low-lying regions like the Bay Area at heightened risk of dangerous flooding. AND The West Coast will see an ocean several inches higher in coming decades, with most of California expected to get sea levels a half foot higher by 2030, according to a report released Friday. Seaside cliffs will be cut back about 30 yards over the next 100 years, and sand dunes will be driven back even more, said Robert A. Dalrymple, a professor of civil engineering at Johns Hopkins University and chairman of the group that wrote the report. After about 50 years, coastal wetlands will eventually be overwhelmed without new sources of sand or room to move inland. That could be problematic in Northern California, though, since dams hold back about a third of the sand that once washed into the sea there from the Klamath River, the report noted…Sea levels rise for two reasons due to global warming. Warmer water expands, which can cause as many as 23 inches of sea level to rise by 2100, according to the Nobel Prize-winning Intergovernmental Panel on Climate Change. Warmer temperatures also cause ice sheets in Greenland and west Antarctica to melt, adding another foot or more to sea levels by 2100, scientists said..... Read more: http://www.sfgate.com/science/article/Global-sea-level-rise-could-hit-California-hard-3657131.php and http://www.sfgate.com/news/article/Report-Calif-to-get-seas-rising-6-inches-by-2030-3655775.php