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

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?

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.

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

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

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

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

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.

Latest scientists' views of sea level rise

The Guardian Unlimited reports: Sourcec: Reuters Thursday January 31 2008

Latest scientists' views of sea level rise

Sea level rise prediction estimates are running toward the top limit and beyond the IPCC predictions.

Excerpt Below:

Antarctica's ice melting faster

Source: The Australian, Leigh Dayton, Science writer, January 15, 2008

New data from the NASA GRACE mission satellite shows that ice melt at the edges of the Antarctic is accelerating, and outpacing the build-up of snow in the interior.

Antarctica's ice melting faster

Below is an excerpt from this press story:

"THE most comprehensive study to date of Antarctica's ice confirms growing concern that the ice cap is melting faster than predicted.

Time Machine: lightblueline on Santa Monica Pier

Time Machine: lightblueline on Santa Monica Pier

In this still from the film "Ruthless People" (Silver Screen Partners II, 1986), the building at the end of the Santa Monica Pier is adorned by a very large version of the same design as that chosen for the lightblueline. The elevation is a bit off... more like 30 feet.

The Year in Review: The planet

Source: The Independent (UK), December 28, 2007

By: Michael McCarthy

The Year in Review: The planet

Excerpt Below:

No denying the cold, hard facts

Syndicate content