lightblueline is a public information project to paint on the streets the message that human induced climate change will impact coastal cities. Whenever you cross the light blue line, remember that the coastline is an outcome of our collective human efforts. Let's keep the ocean on the waterfront. TO JOIN LIGHTBLUELINE: USE the CONTACT link on the left to send us a message, we'll get back to you shortly!

Seven Meter Sea Rise: A Predictable, Worst-Case Scenario

Sun, 2006-08-20 00:56 — webmaster
Greenland Ice Sheet Melt Extent

The question of "Why Seven Meters" is a really good one. And there is a good answer for this. But the answer requires some preliminary work. Sea level changes every century as climate conditions change. After an ice age, sea level will rise as the glaciers shrink. As another ice age grows, sea level will fall as water is captured on the continents. Between ice ages, continents rise as well when released from the weight of thousands of feet of ice. Without human intervention, we would likely see the trend of slow sea level rise continue as it has for centuries.

What is lightblueline?

Thu, 2006-08-10 04:28 — admin

What IS lightblueline:

Lightblueline is a volunteer public education effort that transforms the science of global climate change into a public action. We are painting the seven meter above sea level line on the streets of the world to remind everyone that human induced climate change will, if we do not act NOW, create a new climate, and a new coast line. We chose seven meters, as this is the effect of the ice on Greenland (only) melting.

Sea Level Rise Won't Be a "Hollywood Cataclysm"

Fri, 2008-09-05 19:23 — webmaster

National Geographic reports that the sea level rise in this century will be somewhere between two and a half and six and a half feet. Of course, looking at the next five-hundred years (which is what lightblueline suggests we do, since we do that anyhow for floods and earthquakes) this would translate into a rise between twelve and a half and thirty-two and a half feet. Split the difference and you have about the seven meter rise lightblueline has always been focused on.

Ice Free: New York Times Magazine article

Tue, 2008-07-29 22:09 — webmaster

Source:New York Times Magazine, July 26, 2008. by Stephan Faris
This story notes that Greenland may hold great mineral wealth under its ice sheet, and mining companies are lining up!

Read it HERE:
Ice Free

Here is an excerpt:

Teens' warning on global warming will be overhead

Fri, 2008-06-27 23:26 — webmaster

Source: Ventura County Star, June 27, 2008. by Zeke Barlow:

Here is some press for the SLAP action this weekend, with quotes from Alec. Check out the article:Teens' warning on global warming will be overhead

Excerpt below:

Global Warming after 20 Years: Still waiting for action.

Mon, 2008-06-23 18:13 — webmaster

The Worldwatch Institute posted an essay from James Hansen on the 20th anniversary of his first testimony to congress. It's worth a read (excerpts below):

James Hansen, June 23, 2008

Tipping Points Near

Today, I will testify to Congress about global warming, 20 years after my June 23, 1988 testimony, which alerted the public that global warming was under way. There are striking similarities between then and now, but one big difference.

NASA before and after photos from the Burmese Cyclone, May 2008

Wed, 2008-05-07 23:47 — webmaster
NASA before and after photos from the Burmese Cyclone, May 2008

The impacts of even temporary inundation of coastal areas can change the map. In this cyclone 100,000 people are feared dead.
Image source: NASA; Modis imagery.
Credit: NASA/MODIS Rapid Response Team
NASA Satellite Captures Image of Cyclone Nargis Flooding in Burma
05.06.08

World sea levels to rise 1.5m by 2100 -scientists

Tue, 2008-04-15 21:12 — webmaster

Source: Reuters, April 15, 2008. By Karin Strohecker

World sea levels to rise 1.5m by 2100--scientists

As the climate models start to incorporate dynamic ice characteristics a better picture of the extent of projected sea level rise in the middle term (before 2100) is emerging. This time frame would mean that people born today will potentially live long enough to experience the impacts.

Mapping C-change

Sat, 2008-02-23 17:43 — webmaster

Stuart Candy, from UH Manoa reports on the emerging attempts by citizen artists to mark their environment as a method to show potential local impacts from climate change. He compares the Hawai'ian chalk line to Eve Mosher's work in New York, the projects underway in Seattle and San Francisco, and the lightblueline effort in Santa Barbara.

Mapping C-change

Here is an excerpt.

"So how effective is this type of project in achieving the ends its animators typically have in mind?

Blue chalk line marks future sea level: lightblueline in Honolulu

Sat, 2008-02-02 15:49 — webmaster

NOTE: This effort is an independent action. It fits fully into the lightblueline goal of marking local geographies with the traces of potential future impacts.

Source: AP, January 31, 2008
"HONOLULU (AP) _ High school students have drawn blue chalk lines on Honolulu city sidewalks marking where scientists believe Oahu's high tide will reach after decades of global warming and rising sea levels.

In 50 to 100 years, they expect the Pacific Ocean to shift up to one mile inland from the current shoreline, putting all of Waikiki under water.

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