Saturday, July 27, 2013
From Paradise to Paradise Lost
If you've never experienced the magic of California's Pacific Coast Highway, you might want to add that to your list of things to see before they're gone forever.
To a motorcyclist, Hwy 1, the "PCH", is paradise. The two-lane blacktop undulates along the rugged California coast, dipping from cliff tops to sea-level ravine crossings, it offers almost non-stop corner carving.
Unfortunately the PCH may soon become Paradise Lost. Last month's issue of Vanity Fair had an article on how the richest of the rich in Nantucket and in Malibu are watching helplessly as sea level rise begins to claim their coastal retreats. The article notes that sea level rise is also expected to make the PCH unpassable from washouts.
This warning is confirmed by studies undertaken by the U.S. National Center for Atmospheric Research, or NCAR, into sea level rise, the increase in storm surges and the vulnerability of U.S. coastal regions. Climate Central scientist Claudia Tebaldi says the impacts won't be uniform across coastal America. Some places, like along the Texas Gulf coast are used to severe storms and surges and so development is further back from the water's edge.
“What is more surprising is that the greatest threats from sea level rise and future storm-surge effects will likely occur along the Pacific coast,” Tebaldi says.
Even a relatively small sea level change may result in large changes in risk because people and infrastructure in these areas haven’t had to deal with the effects of sea level rise, explains Tebaldi. For example, the San Francisco Bay area will likely be more susceptible to storm surges than a city like Galveston. In Galveston, where hurricanes frequently occur, residents live further away from the shoreline and infrastructure is built to withstand severe storms and storm surges. San Francisco has rarely had to deal with flooding or severe storms so risks from storm surges are going to be higher.
Sad as it is, the Pacific Coast Highway was not engineered or constructed with the powerful erosion of 21st century coastal storms in mind. Maybe California Hwy 1 will be the Route 66 of the future.