Showing posts with label "greenhouse gases". Show all posts
Showing posts with label "greenhouse gases". Show all posts

Wednesday, 23 November 2011

More Funny Weather


Today, with supremely smug irony, the British Parliament has been discussing slashing the feed-in tariff (originally designed to encourage the adoption of solar power by domestic consumers) as part of the Government's so-called "green deal". It is being cut by over a half on the spurious argument that it increases the cost of electricity to consumers and consequently pushes people into fuel poverty - I say spurious because the highest estimated increase caused by FITs is £6 per annum onto the average household bill, with some estimates as low as just 30p. This is zilch by most standards and even more so when set against the rise of several hundred pounds per annum that the Government has contentedly allowed profiteering energy companies to add to fuel costs in the last year or two.

This comes in the same week as a World Meteorological Organisation report has revealed that in 2010, in spite of all the talk and more talk by the IPCC and Governments, the rate of increase in carbon dioxide in the atmosphere reached its highest yet - an additional 2.3 parts per million, putting us firmly on course to exceed even the worst scenarios previously anticipated by climatologists. These figures endorse an earlier report by the International Energy Agency in May, which produced similarly stark findings. Even if magically all further increase was to stop, temperatures would rise by around 3C by 2050 - it may not sound much, but its impact would be on a level that would spell disaster for human societies in many parts of the world through the collapse of their agriculture and social systems. Less directly affected countries would find the cost of basic needs such as food and water rocketing well beyond the point of social crisis, and mass migrations would almost certainly trigger conflict on an unprecedented scale.

Don't believe it? It would be nice if it wasn't true and tempting to want to think that; and this week, the BBC announced that the global warming episode of its "Frozen Planet" series won't be shown in the USA so as not to disturb the willful ignorance of the US public, who are among the worst polluters on the planet. 

However, aside from the evidence of increasingly extreme weather events, like the fact that British temperatures this past week have been around double the seasonal average - a whopping 18C on Sunday compared to the 9.5C norm for mid-November - the plain science is this:

- the more carbon dioxide there is in the atmosphere, the more heat from the Sun is trapped in our atmosphere. Too little and we would freeze; too much, and we'd fry. The margins either way are surprisingly (and terrifyingly) small - humanity's hold on the planet is tenuous to say the least.

- through our massively increasing use of fossil fuels, such as gas, coal and wood due to the processes of the industrial age from the 1750s onwards, humans have pumped unprecedented amounts of carbon dioxide and other gasses with even greater "greenhouse" effects, like methane and nitrous oxide (currently the fastest increasing gas), into the atmosphere. Indeed, in the last fifty years, we have used more carbon fuel than in the rest of history combined.

- Consequently, since 1750, the concentration of carbon dioxide in the atmosphere has increased from 280 parts per million to 389 parts per million. At the same time, temperatures have climbed, sometimes exaggerated or cooled by natural variations like El Nino and El Nina, and even occasionally by sunspots, but overall, the ongoing, underlying trend is up, and has nothing to do with any natural phenomena. Rather, it is created and fanned by human activity for precisely the scientific reasons set out above: burning fossil fuels creates greenhouse gas emissions which trap more and more heat in our atmosphere.

The current rate of emissions is in spite of the downturn in economic activity through the global recession - and Britain is as much to blame as anywhere, with a 2.8% increase in emissions in 2010. And as the planet warms, we are already past the "feedback" thresholds for a number of phenomena which will start to cause an exponential increase in greenhouse gas levels. These include the diminishing of the albedo effect as Arctic ice melts and the "whiteout" of the northern hemisphere declines, reflecting less light and heat back into outer space. Similarly in the north, the melting of the Siberian tundra after millennia of permafrosting is releasing dangerous quantities of methane, which is around twenty times more powerful at trapping heat than carbon dioxide. Eventually, what has been triggered by human activity and could still be at least mitigated by human action, will take on a life and dynamic entirely of its own.

So, just as every long march begins with a single step, every piece of action taken now to reduce greenhouse gas is utterly vital, not to saving the planet - it will endure - but to saving our civilisation and even our species. To this end, the delay and trimming by the Con Dem Government is more than lamentable - it is a betrayal of our futures and a crass denial of reality.

Funny weather indeed. But no laughing matter.


Tuesday, 17 May 2011

Staring at The Sun

The beleaguered Environment Secretary, fast-driver Chris Huhne revealed the Government's much debated Carbon Budget today, ostentatiously declaring that it will become a legally binding requirement for the Government to achieve a 50% reduction in carbon emissions on their 1990 level by the UK by 2025 to tackle global warming. He has done so in spite of bitter opposition from his fellow Lib Dem, the Business Secretary Vince Cable, as well as from the climate sceptics who inhabit the Tory benches like a horde of neanderthals.

On the face of it, it is a significant achievement and it has been welcomed by some environmental campaigners. But, on closer inspection, the announcement raises more questions than it answers.

1. How will the 50% by 2025 impact on the current plans by the Government to abolish the Climate Change Act on the grounds of it creating too much "red tape" for business and the legally binding target of an 80% reduction by 2050 (which general scientific consensus says is necessary to prevent run-away global warming)?

2. Although the plan includes scope for renewables, recent Government decisions will make it much harder to obtain funding to install community and large scale solar farms. So will the focus move to building new nuclear power stations on the dubious grounds that  nuclear energy is carbon-friendly?

3. The plan allows Britain to trade emissions credits with other countries that have lower carbon emissions - mostly poorer ones. This will at least involve some transfer of money to these countries, but given that their emissions are always among the lowest, will it genuinely achieve any reduction in carbon emissions?

4. Why have we kept that wonderful opt-out card that, if other countries don't do enough, we can stop doing anything? Who on earth came up with that idea?

Of course, in the Tory press and blogosphere the announcement has brought forth a chorus of criticism of how this will damage British manufacturing. And of course the sceptics have been out in force - the Daily Telegraph readers were particularly perplexed by it all:

For the 12 months of last year, I had a subscription to Scientific American. Month after month, there were articles about global warming. In every article, it was taken as read that Global Warming is A FACT. It seemed to me, as I read the articles, that anyone who wanted an article published had to adhere to that basic tenant. 

and this:
The whole climate change debate shoukd be quietly slinking away into oblivion. Don't you get it... We were all conned! The politicos won't admit it as they might be lynched.

and very bizarrely:

None of us KNOWS whether the CO2 science is categorically right or wrong.
But we do know that £13M to reopen the McCann kidnap case is an utter waste of money....


And, assuming he is still in office, it is this sort of pseudo-scientific garbage, propounded by Tory MP after Tory MP, that will probably do for Huhne's attempts to put these proposals into legislation. As was evident in a variety of surveys and stories up to the 2010 General Election, Conservative Party candidates were the least concerned of all parties about global warming by a very wide margin indeed - some described it as a "scam" with ludicrous claims of a vast leftwing conspiracy to use climate change as a means of destroying industry. In addition, the Telegraph itself reported in January last year, a meagre 6% of the top 250 Conservative candidates expressed any desire at all to reduce the UK's carbon footprint in a Conservative Home survey.

All this stands in the face of all the evidence: that the Earth is losing 25 billion tonnes of oxygen each year; that carbon dioxide concentrations in the atmosphere have risen by 50% since the Industrial Revolution two centuries ago, and that month after month, year after year, new records are being broken in the extremity of our weather patterns. Last month was the warmest UK April on record and this month is likely to be the warmest May. The USA has just had the largest set of cyclones recorded in decades, while British nature goes to pot - hibernating animals emerge early with the risk of dying again if there is a sudden change, while the strawberry crop has ripened so early that there will be none left for consumption during the Wimbledon tennis competition.

The objectives announced today require a lot of detailed explanation about what they will actually mean and to prove they are more than just a stunt. But as important to its success or failure will be what support will be salvaged from among Tory MPs.

Meantime, the forecast is for another heatwave.


Saturday, 11 December 2010

The Failure of Kyoto: why Cancun will not save us

World leaders are hailing the agreement at Cancun as a qualified success. With the exception of Bolivia, delegates have signed up to a new commitment to reach agreement on carbon and other greenhouse gas emissions within the next two years. Alongside this, they undertook to provide $100 billion in aid by 2020 and support measures to protect tropical forests and new ways to share new clean energy technologies - a restatement of an earlier, unfulfilled pledge.

Cancun is seen as a halfway house to a reviewed/renewed Kyoto Protocol, and the agreement essentially is little more than a commitment to do something unspecified by 2012, when the current, largely unimplemented treaty is due to expire. Any hard decisions have been delayed to the next round of talks in Bonn - the reason for Bolivia's resistance to the half-hearted agreement.

The Kyoto Protocol was drawn up in 1997 and sought pledges from the international community to cut greenhouse gases -carbon dioxide, methane, nitrous oxide, sulphur hexafluoride, and two groups of gases, hydrofluorocarbons and perfluorocarbons- by 5.2% against their 1990 levels by 2012. But many of the worst polluters - the USA, China and Australia in particular, either dragged their feet over ratification or refused to sign completely. While some countries did make some progress - the UK under the last Labour Government did take some bold if rather incomplete steps - this was in some cases a result of reduced energy use because of economic recession rather than developing new, sustainable alternative sources such as solar or wind power. In other cases, the Protocol's controversial permitting of carbon trading as a means of reducing emissions on paper (mainly by rich countries purchasing quotas from poor countries that were never going to use their quotas in any case) allowed some to claim reductions when in fact the opposite had happened.
Business as usual on Planet Earth
In many parts of the world, "business as usual" means that industrialisation has continued apace, with voodoo solutions such as biofuels, carbon capture and seeding the seas with various minerals touted as miraculous answers to the emerging climate crisis. The consequence has been that, as of the end of 2009, rather than effecting a 5.2% reduction in gases, the world's output had increased by 41% since 1991.

Of course, with the world in recession following the banking crisis, cynics and fair weather environmentalists contend that climate action will need to wait. It is written off as a luxury we cannot afford. In the UK, the right wing point to the recent cold weather as apparent proof that global warming is a sham, invented by a conspiracy of scientists to gain government grants for their work.

But 2010 has been the warmest year on record. More and more evidence shows we are close to a tipping point such as one where warming melts the Siberian tundra to an extent that massive quantities of methane are released into the atmosphere, exponentially increasing the rate by which the planet heats up and in turn triggering more and more feedback points where increases in gases in the air lead to more and more rapid warming. Even conservative estimates accept that it is now impossible to contain global warming to 2C in the next century and far higher increases are likely.

A 5C increase is a distinct possibility in the decades ahead. Nice enough if you have that for a few weeks in the summer in the UK, but apply it worldwide on a permanent basis all year round and global catastrophe results - massive crop failures will induce mass starvation across the planet; hundreds of millions, even billions of climate refugees will result; social conflict and resource wars will burgeon; whole states will fail and some, like the Maldives, will disappear under the rising sea levels. Water scarcities will plague many places, while others will face severe flooding. Humanity's ability to survive at any civilised level will be seriously tested. And this will not be in two or three centuries time - rather much of the disruption will begin in the next few years, and many alive now will likely face the worst consequences of our collective failure to act in time.

So tackling global warming is no luxury, able to be set aside for a few years while the bankers replenish their coffers. We face the greatest threat in history not to the planet - we are arrogant to use phrases like save the planet; Earth does not need us and will long outlive our kind. The real threat is to our own species, the human race, and the time for action is now.