Green Options

More data show that ‘Yes, climate change is happening, ice is melting at alarming rates, and the time for action is now.’

Independent research using state-of-the-art modeling and satellite observations shows that melting of the Greenland ice sheet is speeding up.

Four months ago, new research showed that Arctic sea ice was at its lowest point in about 800 years, another study a couple months ago showed suprisingly fast melting in Greenland and Antarctica. Now, research from other scientists in Bristol (UK) published in Science confirms that ice sheets in Greenland are melting at an unprecedented rate.

There has been a lot of effort in the past few months to knock down climate change activists, say it isn’t happening. No wonder, of course, given that we are quickly approaching one of the most important meetings in the history of the human race — the climate change conference in Copenhagen. This new report shows again that whether we admit it or not, ice is melting, sea levels are bound to rise, climate change is happening, and the whole world will be changed as a result of it.

This week in the journal Nature scientists give the most comprehensive view of thinning ice sheets in Greenland and Antarctica to date.

Scientists from British Antarctic Survey (BAS) and the University of Bristol analyzed 50 million satellite measurements (from NASA) to show the massive ice loss on these polar giants.

The result are surprising, even to the scientists.

Australian protestors are complaining about the failure of the Australian government to take tough enough action on climate change, and in support of Pacific Island groups who have asked for substantial emission cuts from Australia and New Zealand to help protect their land from rising sea levels.

Fourty percent or more of the Amazon rainforest will be “decimated” by the middle of the next century even if we cut all CO2 emissions by 2050, said the UK Met Office. The finding was presented this past month in Copenhagen, which is preparing to host the UN Climate Change Conference in December.

In this satellite image of deforestation in Brazil, tropical rainforest appears bright red, while pale red and brown areas represent cleared land. Black and gray areas have probably been recently burned.

A new proposal to improve a 75-year-old dike, the Afsluitdijk, in The Netherlands could make it the world’s leading site for generating saltwater power— a clean, renewable energy source which is 30-40% more efficient than burning coal.

The breakthrough process, which is called reverse electrodialysis, captures the energy created when freshwater becomes saltier by mixing with seawater. Although scientists in the 1950s discovered that electricity could be generated this way, no one knew just how efficient the process could be until a recent study proved that a remarkable 80% of the energy could be recovered.

Climate change must be factored into all new planning to safeguard coastal developments against sea level rise, the State of Victoria in Australia has decided.

The Government of the Maldives, a small island nation in the Indian Ocean, is looking at alternative ways to deal with the nation’s impending inundation.

Global sea level rise is a big problem for many of the world’s nations. With an average height above sea level of 1.5m and a maximum height of 4m the Maldives has a bigger problem than most. In their 2007 report the Intergovernmental Panel on Climate Change forecast that sea level rise is occurring and is speeding up. They also acknowledge that the amount of change varies from place to place. Some regions are seeing a rise, others a fall.

The governments of all small island nations under threat from these changes have been trying to come up with workable solutions. For example one solution under consideration by the Maldivian government involves building a protective sea wall around a several of islands and moving the entire population to a new protected home. This option has been dismissed however as it was thought to be prohibitively expensive.

In a first-of-its-kind executive directive, Schwarzenegger, a Republican, has ordered the state to begin taking immediate action to mitigate the impending damage to state resources caused by climate change.

With predictions pointing to a global rise in sea levels over the next century, many countries are beginning the first stages of planning to deal with such increases. For Asia, a land where population density is the least of their problems, but a major problem nonetheless, this foresight could save millions of lives.

One of the countries that is proactively attempting to find solutions is Vietnam. No longer willing to rely on foreign non-governmental organizations, Vietnam is looking to find solutions for themselves.

A new study published in Science Magazine concludes that an improved estimate of sea level rise (SLR) puts the increase at 0.8-2.0 meters, roughly 3.5 times the IPCC projections.

There has been significant debate regarding the projected sea level rise over the 21st century. The Intergovernmental Panel on Climate Change (IPCC) projected that neither Greenland nor Antarctica would lose significant mass by 2100. However, recently both regions have experienced significant ice loss.

Richard Kerr of Science Magazine explains the discrepancy between the IPCC predictions and recent studies.

Warming glaciers raise sea level in two main ways. They add more water as they melt, and they also add water when ice breaks off from glacial flows. The incidence of this latter phenomenon has soared in recent years for some glaciers draining the southern Greenland Ice Sheet, much to the mystification of glaciologists. Unable to model such accelerated ice losses, members of the Intergovernmental Panel on Climate Change declined to include them in their widely cited projection of up to 60 centimeters of sea level rise by 2100