Category: Earth & climate

The climate debate is gaining momentum

Obama during his visit at the Energy Department, where he announced his plans to cut government emissions (photo: AP Photo/Jacquelyn Martin)

Back in September 2014, many were skeptical about the People’s Climate March in New York. Could a mass demonstration really change the tone in climate policy when it has been stuck in never ending discussions for the last twenty-five years? The 311 000 protesters from over the whole world believed they could indeed.

We don’t know if the march had an hand in it, but we do know a lot started to change in the fall of 2014. The climate debate was steadily gaining momentum and impact. We saw a historical pledge of the US and China to reduce their emissions. For the first time we got an agreement with all countries present on the COP in Lima. The EU announced its new emissions reduction goals for 2030.

The new year had not long taken its start before we saw another big event in the climate debate. On fossil fuel divestment day, people all over the world organised parades and flashmobs to ask banks, universities and public institutions to divest from fossil fuels.

Obama during his visit at the Energy Department, where he announced his plans to cut government emissions (photo: AP Photo/Jacquelyn Martin)

Obama during his visit at the Energy Department, where he announced his plans to cut government emissions (photo: AP Photo/Jacquelyn Martin)

Not much later, Barack Obama vetoed the Keystone XL pipeline. The project would have brought millions of barrels of dirty tar sands oil all the way from Alberta (Canada) to Texas. Years of activism of a coalition between indigenous people in Canada and ranchers in the US finally showed off. It seems that Obama is warming up and finally putting all his energy in his promises regarding climate change.

And it doesn’t stop there. Last week, the president of the United States signed an executive order to reduce U.S. Government greenhouse gas emissions by 40% by 2025. Although the government accounts for only 0.7% of the US emissions, it is still the single largest emitter in the States.

And it is not so much about the numbers than it is about the move. To say it with Obama’s own words: it is leading by example. And it seems to work. Big firms like HP, IBM and General Electric all committed to cut their emissions drastically over the next decade.

In France, a new law was approved by parliament which decrees new rooftops of commercial buildings should be covered in plants or solar panels. Rooftops plants have many benefits. They are an extra layer of insulation during winter and summer, retain rain water for some time reducing the risk of flooding during periods of heavy rains. The natural rooftops also favors biodiversity in urban areas.

Yet, not everything is going as one would want. Despite the efforts of Barack Obama to let the US play a prominent role in the action on climate change, some republican states are going the opposite direction.

In California, the term “Climate Change” was banned from all official communication lately. How ironical for a state so vulnerable for its effects. As if banning the word is going to stop the planet from warming up. Bart Bibles, a state land management plan coordinator, was even suspended from work after he wrote a report and didn’t want to remove the words climate change. He was told to get a mental check-up, as if he is the one with some serious problems.

The 28  heads of state approved the proposal for a European Energy Union last Thursday (photo: European Union)

The 28 heads of state approved the proposal for a European Energy Union last Thursday (photo: European Union)

It can get even worse. The European Union is playing a leading role in progressive climate policies, yet last week the 28 heads of state accepted the the Energy Union proposal of the European Comission. This energy union is a logical next step in Europe with its free transport of people and goods. The Energy Union is intended to make the European electricity network more robust and less dependent of Russian gas. Most Europeans can only applaud this motives.

But the  EU miss an enormous opportunity in the way they now plan to fulfill this objectives. This is the ideal moment to fully prioritize renewables and efficiency targets. But the energy union seems to put gas on the first place. As the tension with Russia grows, the European Comission looks for European gas resources, instead of turning away from more gas instead. It is true: the burning of natural gas is up to 50% cleaner than conventional oil, but the production can be much more devastating. The whole plan doesn’t seem to match the spirit of the European goals on higher energy efficiency and renewable energy generation. As Brook Riley of Friends of the Earth Europe said:

It’s baffling to see governments putting gas in prime position when these plans were born out of a desire to end gas import dependency. Heads of state seem to have fallen for gas industry propaganda. Saying gas is a clean fossil fuel is like saying filter cigarettes will prevent lung cancer.

With nine months left until the Climate Summit in Paris, politicians seem to start feeling the hot breath of the climate movement. But they way they’re reacting to it is not always what wise leaders should do -we’ve still a long way to go.

Sources:
The Washington Post
Reuters
TheGuardian
Friends of the Earth

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A short history of climate change – part 2

By the end of the sixties climate scientists are far from a consensus about the scale and underlying mechanisms driving the change in climate which is taking place. Yet, there’s two things that are becoming very clear: carbon dioxide has an important impact on it and humans are pushing the atmospheric CO2 levels up to unseen values.

The greenhouse effect has been detected, and it is changing our climate now.

1972 First UN environment conference ever taking place in Stockholm. The focus lies on chemical pollution and whaling, climate change is addressed shortly. The Unep (United Nations Environment Programme) is created.

1987 Montréal Protocol is agreed to restrict the CFCs which damage the ozone layer. The agreement shows that political agreement over international planetary action is possible. Today scientist have shown slow but steady recovery of the ozone layer.

1988 James Hansen, climate scientist at NASA, bears testimony over the scientific findings: “The Earth is warmer in 1988 than at any time in the history of instrumental measurements. There is only a 1 percent chance of an accidental warming of this magnitude…. The greenhouse effect has been detected, and it is changing our climate now.”

Hansen's historical testimony in US Senate

Hansen’s historical testimony in US Senate

1988 Intergovernmental Panel on Climate Change (IPCC) is founded. They provide reports which give insight in the current climate change models and predictions. The reports are the reference for policy makers.

1992 Earth Summit in Rio de Janeiro, where governments agree the United Framework Convention on Climate Change. Countries agree to bring their emissions back to 1990 levels. Till today 1990 is commonly used as reference base for emissions.

1997 Kyoto Protocol is adopted in Kyoto, Japan. Based on the premise that climate change is real and driven by human carbon dioxide emissions, developed nations agree to cut emissions by an average 5% starting from 2005. Yet the US and China, among the biggest polluters, don’t ratify the agreement.

Many see Earth Summit 1992 as the beginning of worldwide climate policy

Many see Earth Summit 1992 as the beginning of worldwide climate policy

1998 Warmest year on record at the time. Scientists still debate whether it is due to climate change, El Nino or both.

2007 IPCC fourth assessment report says it more than 90% sure that humanity is responsible for modern day climate change.

2008 Barack Obama promises to make Global Warming as one of his key working points. Seven years later, not much has been done. Giving his fiat for fracking of shale gas all over the US, he even opens the door to a welcome excuse for fossil fuel companies to wait a bit longer with renewables. Yet, only recently he vetoed the Keystone XL pipeline. This ensures a lot of oil is kept in the ground – where it should be.

Barack Obama made climate change one if his top priorities - not much has been done

Barack Obama made climate change one if his top priorities – not much has been done

2009 Not long before the long-anticipated climate talks in Copenhagen, emails of climate scientists, some of which working for the IPCC, are published on the internet. Sceptics use them to put the climate scientists in bad light and accuse them of lies and fraude. Eight independent communities are founded by different countries in order to investigate the accusations – none of them turn out to be true.

2009 UN Climate Summit in Copenhagen. Expectations are high to find a post-Kyoto international agreement on climate change, but no binding results are reached. When the end of the conference is approaching without any binding deals, climate activists desperately try to get into the building where the world leaders are gathered. It comes to a severe clash with riot police.

2010 European Parliament approves Europe 2020, a ten-year strategy to reduce greenhouse gas emissions by 20% relative to 1990 levels, 20% increase in energy efficiency, and a share of 20% of renewable energy sources in total energy consumption.

Barosso presents the Europe 2020 deals: a bold plan to make Europe world leader in sustainable energy

Barosso presents the Europe 2020 deals: a bold plan to make Europe world leader in sustainable energy

2013 For the first time the concentration of CO2 in the atmosphere has reached the 400ppm level. 350ppm is regarded as the upper safe level.

2014 The new IPCC report based on more than 900 peer reviewed articles says 99% of scientists agree that modern-day climate change is due to mankind emissions. They outline 5 scenarios and the concept of the carbon budget. To keep warming under 2°C we must start reducing emissions drastically in the next decade or we will simply be too late.

2014 People’s Climate March in New York: an estimated 311 000 people gathered in what became the biggest collective action for the climate in history. The march was intended to urge political leaders, who would arrive a few days later for a climate top in the Big Apple, to take action on climate change.

The People's Climate March was the biggest collective action for the climate in history

The People’s Climate March was the biggest collective action for the climate in history

2014 China and US announce together to cut their emissions. An important symbolic step.

2014 Europe makes bolder plans for 2030 than the earlier agreed 20-20 deal.

2014 Climate summit in Lima, Peru, shows once again the deep division between developed and developing nations (see this earlier post). An historical agreement is reached where all nations present promise to cut emission (but still no binding numbers). Everyone puts his hope on Climate Summit in Paris 2015, seen as the last moment we can change the course before it’s too late.

2015 2014 is officially declared as being the warmest year on record. This time there’s no El Nino to blame. Journalism group Climate Central puts it like this: the odds of such a year happening by chance rather than due to a combination of man-made pollution and natural climate variability are less than 1-in-27 million (read also this post).

Main source:

http://www.bbc.com/news/science-environment-15874560

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A short history of climate change – part 1

Did you think climate science is a novelty? Not at all. From the 19th century on, mathematicians, physicists, engineers and other smart people have been looking for answers to the most complicated questions regarding Earth’s carbon and energy cycles. A short overview of how the science has grown over the years and finally became a base to policy making as well.

1824 French mathematician and physicist Fourier is the first to describe what we now call the greenhouse effect. He reasoned that there should be a way how Earth keeps part of its warmth it receives from the Sun. Otherwise Earth would be an ice planet and life as we know it would be impossible. He predicts that certain gases in the atmosphere keep some of the infrared radiation from going into space and thus keep the planet warm, like a blanket.

Fourier

Fourier

1861 Irish physicist and chemist Tyndall finds in experiments that water vapor and carbon dioxide are the most important gases that can trap heat in the way Fourier predicted.

Tyndall

Tyndall

1896 By looking at Earth’s temperature and its links with volcanic eruptions, Swedish scientist Arrhenius reasons that carbon dioxide fluctuations in the atmosphere are responsible for climate change rather than the daily fluctuations in water vapor. Together with his colleague Högbom he finds that industrial-age coal burning will enhance the natural greenhouse effect. Today’s scientists have shown that roughly one out of four CO2 molecules in the atmosphere was put there by humans (they do this with a C14 isotope tracer method).

Arrhenius

Arrhenius

1938 Callendar shows that temperatures have risen over the previous century, based on measurements of 147 weather stations. He makes the connection with the available CO2 data. He calculates that doubling the CO2 levels would mean a temperature rise of about 2°C and he also predicts that higher temperatures could trigger a self-sustaining warmer climate (nowadays called the feedback loops). He also addresses the common objection against Arrhenius’ theory that oceans would absorb most of the emitted carbon dioxide by looking at the saturation of CO2 in sea water.

1958 There is still no consensus between scientists over the question whether atmospheric CO2 levels are really increasing or that most of it is absorbed by the sea. Therefore Keeling starts systematic measurements of atmospheric CO2 at Mauna Loa in Hawaii and in Antarctica. Four years later, he delivers the first undeniable proof that atmospheric CO2 concentrations are rising, presented in his famous Keeling curve (the saw tooth form is caused by the seasonal fluctuations in CO2). The match with temperature change (corrected for volcano eruptions) is stunning.

Keeling and his famous Keeling curve

Keeling and his famous Keeling curve

From this moment on, many teams of scientist from around the world start researching climate change via ice cores, air and sea temperature measurements, acidity of ocean measurements… Step by step the old objections are answered, yet until today not all of them have been addressed. Now the science becomes clearer and more frightening, some policy makers start to worry too. It’s the beginning of climate change as a political issue. More about that in the second part of this issue!

Main sources:

http://blogs.scientificamerican.com/plugged-in/2013/05/16/why-we-know-about-the-greenhouse-gas-effect/

http://www.aip.org/history/climate/co2.htm

http://www.bbc.com/news/science-environment-15874560

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Photo of the week: It’s now official – 2014 is the warmest year on record

Global temperatures are steadily on the rise since the eighties (source: NOAA)

This week Nasa and Noaa reseachers both presented their conclusions of their calculations on weather and climate data collected during 2014. Using different data analysis tools, they came to the same result: 2014 is the warmest year ever since records began in the late 19th century. (more…)

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Photo of the week: The Desolenator

The Desolenator turns dirty water into clean drinking water solely by solar energy (photo: Desolenator)

Desalination of water usually is an energy-intensive and expensive process. The Desolenator is aiming to change that: it’s a cheap and easy-to-use solution to produce clean drinking water in regions where water scarcity is a problem. With the sun as only driving force, this piece of engineering is able to produce up to 15litres of clean water a day – enough for cooking and drinking of a small family. Not only salt water but also contaminated and dirty water can be transformed. The contaminated water is first heated up by the sun until it reaches boiling temperature, then electricity generated by the soler panel is used to boil it further and to vaporize the water. The condensed vapor is safe to drink. The Desolelanor has a price tag of 450$ but the team is working hard to get the price down so it becomes affordable for families who lack access to clean water. CEO Janssen: “… [water scarity, red.] will get worse—by 2025, close to 3 billion people will deal with water scarcity daily. We want to give them something that’s an affordable, family-sized device.”

Find out more: desolenator.com

Sources:

FastCoexist

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