Government passes wind

Photo: Clive Simpson

British government policies are failing to support renewable energy despite more of the country’s electricity than ever before coming from renewable sources in the first part of the year.

Statistics from the Department of Energy and Climate change (DECC) reveal almost one fifth of electricity generated in Britain came from wind farms or other green technologies in the first three months of 2014.

New wind farms, strong winds and a good winter for hydro power plants sent renewable energy generation surging to 19.4% of all electricity from January to March.

The power produced was enough for about 15 million homes during the quarter and the figure is up from about 12% compared to the same period last year.

The figures were welcomed by green energy entrepreneur Dale Vince, founder of Ecotricity*, but he warned that government policies would severely limit further expansion of green power generation.

"Making our own energy here in Britain from green sources is the only way to keep our energy bills down and meet our climate targets," he said.

"To see Britain 20% powered by green energy is the first quarter of this year is fantastic - we've come a long way in a few years.

"Unfortunately we may not get much further with this government which is set firmly against the green energy industry and is in favour of fracking and nuclear power."

The DECC data reports the total amount of electricity generated by all forms of renewable power reached 18.1 terrawatt hours in the first three months of this year - up 43% on the same period last year.

Across the whole of 2013, the amount of electricity generated from renewable energy sources, including solar, hydro and biomass, was up by 30% on 2012. Offshore wind rose the most – by 52% – but solar was also up by 51%, while hydro generation fell by 11%, reflecting lower rainfall.

The DECC data reveals that the price of electricity for domestic customers was up by 5.9% in real terms quarter on quarter – the same figure as recorded for industrial electricity prices.

Jennifer Webber of RenewableUK, the renewable energy trade association, said: "Onshore wind is delivering today and it is deeply illogical to talk about limiting its potential.

"The government would have been even further behind its energy targets without the strong performance of wind last year. That's why we need to ensure that there's continued investment in both onshore and offshore wind."

When it comes to power generation we certainly live in a topsy turvy world.

Already this month more than 100 right-wing Conservative MPs have signed a letter urging the prime minister to further cut subsidies to onshore wind farms – beyond the planned 10% reduction already announced.

Apart from arguments over cost subsidies, the most common objection to wind turbines is they spoil the view. This despite much of our countryside having been blighted for years by countless miles of ugly power pylons and electricity cabling.

Yet, compared to a fracking well (coming soon to a location near you) or pollution spilling from a gas-fired power station, the symmetric beauty of wind turbines appear serene and unobtrusive.

Where prejudice - and the ‘need’ to preserve previously unremarkable or average ‘views’ - trump the very real needs of energy provision and protecting our future it is surely time to look at things with a new perspective?

Ed Milliband, leader of the Labour party, said in London yesterday that the country has a "decades-long problem" of short-term decision-making by successive governments.

Coherent long-term strategies are desperately needed in many areas and nowhere is this more important than in national energy policy and the renewables market.


*Ecotricity, one of the country's small energy suppliers is based in Stroud, Gloucestershire, and is the UK's leading supplier of green energy. It started supplying its customers with 100% green electricity from August 2013 and, according to its annual Progress Report, now sources ‘a unit of 100% green electricity' from its own windmills and sun park, or from the wholesale market, for every unit of electricity its customers use.

The Lighthouse Keeper is written by Clive Simpson - for more information, commission enquiries or to re-publish any of his articles click here for contact information

Factory food

Tournaments like the World Cup often serve as a reminder that our different languages and cultures across the globe remain distinctive and individual.

But when it comes to what we eat there is growing evidence that traditional diversity is being eroded.

Flicking between TV channels during mundane moments of the Germany versus Algeria World Cup match last evening I came across an interesting documentary on Channel 4.

‘The World’s Best Diet’ was a compelling exploration of the dietary habits of people all over the world, ranking the best and worst diets and asking what we should be eating.

It revealed how eating habits across the globe have transformed over the last 50 years - and how this has affected our health.

For the record England came in at number 34 of the 50 nations surveyed. And top of the diet pops was Iceland, where fresh fish is a staple.

I was surprised to learn that inhabitants of the Marshall Islands in the remote Northern Pacific now have the worst ranked diet - and highest rates of death by diabetes - largely because their traditional farming has been replaced by additive-filled American imports.

Overall, the message of the programme was clear - stay away as much as possible from all kinds of processed food.

But somehow all this talk of healthy eating seems to have the opposite effect and I just can’t resist the urge to pop out and buy a Snickers bar - or should that be a Marathon?

Blue sky thinking

Photo: Clive Simpson

 

Researchers concerned about the climate change potential of condensation trails in the sky caused by aircraft have suggested the impact could be reduced by re-routing flight paths.

Contrails - a cirrus-like cloud - are a relatively new type of high-level cloud that appear in the wake of high-altitude aircraft as water vapour from engine exhausts coalesces.

They can be up to 150km in length and last up to 24 hours, forming when planes fly through very cold and moist air causing engine exhausts condense into a visible vapour.

Founder of The Cloud Appreciation Society Gavin Pretor-Pinney writes in The Cloudspotter’s Guide that we may be surprised to learn that contrails are even classified as clouds.

But clouds they are - and the only difference between them and what nature produces is that contrails are definitely man-made.

Contrails reflect sunlight back into space and so have a cooling effect - but they also trap infrared energy in the atmosphere, which adds to global warming.

Scientists at the University of Reading in the UK have been looking at how the warming impact - which is more significant overall than the cooling - could be reduced by altering the flight paths of long and short haul aircraft.

Previous work has suggested that planes could fly at lower altitudes to limit the trails but this would burn significantly more fuel and adding to CO2 emissions overall.

The Reading study attempted to see if the benefits of curbing contrails would outweigh the extra fuel burned if flights were re-routed whilst at the optimum flying altitude.

They suggest that avoiding the creation of a major contrail on a flight between New York and London would only add 22km to the journey but could curb the flight’s warming impact.

"You think that you have to do some really huge distance to avoid these contrails," said Dr Emma Irvine, the study’s lead author.

"But because of the way the Earth curves you can actually have quite small extra distances added onto the flight to avoid some really large contrails."

The researchers found that short haul aircraft are more fuel efficient and can add up to 10 times the length of the contrail to their journeys and still reduce overall warming potential.

So, if a flight from the UK to Spain is predicted to create a 20km long contrail, as long as the plane flew less than 200km extra to avoid it, the overall warming impact would be reduced.

But for large planes on longer routes over oceans and unpopulated areas - which offer more flexibility to minimally alter flight paths - this reduces to three times the contrail length.

"The key things you need to know are the temperature of the air and how moist it is, these are things we forecast at the moment, so the information is already in there," said Dr Irvine.

On average, 7% of the total distance flown by aircraft is in the type of air where long lasting contrails form but none of the calculations on the impact of aviation on global warming currently include them.

The carbon restrictions being introduced from 2017 for long haul flights originating or arriving in the EU will not include this significant source of warming from aviation.

"The mitigation targets currently adopted by governments all around the world do not yet address the important non-CO2 climate impacts of aviation," said Dr Irvine.

"Contrails may cause a climate impact as large, or even larger, than the climate impact of aviation CO2 emissions.

"We believe it is important for scientists to assess the overall impact of aviation and the robustness of any proposed mitigation measures in order to inform policy decisions. Our work is one step along this road."

Four years ago when flights across Europe were grounded - due to the dust cloud created during the eruption of an Icelandic volcano - our skies and sunsets could be viewed without visible signs of human intrusion.

Contrails and their delicate linear patterns often add a seemingly innocent beauty to the skies above but Pretor-Pinney is not so sympathetic and describes them as "the bastard sons" of the cloud family.

"They may cut dashing figures across the rosaceous autumn evening but these icy swathes of progress must be the writing on the sky for cloudspotters and everyone else besides," he says.


The Lighthouse Keeper is written by Clive Simpson - for more information, commission
enquiries or to re-publish any of his articles click here for contact information

New North Sea harvest

Just as the UK's gas and oil bonanza is drawing to a close it seems that the often maligned North Sea off the east coast of Britain is about to deliver again.

This time the harvest will be in the shape of electricity from the gusty winds that ply relentlessly across the busy stretch of water.

The government announced today the go-ahead for one of the world's largest offshore wind farms that is set to be built off the coast of East Anglia.

‘East Anglia One’ will cover an area of 300 square kilometres in the southern North Sea and support almost 2,900 jobs and is expected to generate enough electricity to power the equivalent of 820,000 homes.

It could also pump over £520 million into the region’s economy and today’s announcement is an important milestone for the 50/50 joint venture between ScottishPower Renewables and Vattenfall,.

Construction is expected to start in 2017 with offshore installation commencing the following year and generation starting in 2019.

Initial plans were to install up to 325 offshore turbines in a zone some 43 km off the coast but the use of larger turbines means that only around 240 will likely be needed to deliver the same 1.2GW of capacity.

UK energy secretary Ed Davey said: “East Anglia and the rest of the UK have a lot to gain from this development. The project has the potential to inject millions of pounds into the local and national economies, and support thousands of ‘green’ jobs.

“Making the most of Britain’s home grown energy is crucial in creating job and business opportunities, getting the best deal for customers and reducing our reliance on foreign imports.”

RenewableUK’s chief executive Maria McCaffery described it as “a huge confidence boost” for the UK’s entire offshore wind sector.

“Our world-beating offshore wind industry is set to more than treble in size by the end of the decade – projects like this will help us to maintain our global lead,” he said.

“This marks the start of what is set to be one of the world’s major green energy infrastructure developments. It is the first of six projects within the same zone with a combined capacity of up to 7.2 gigawatts, enough to power more than 4.6 million British homes.

The government announcement stressed that the new wind farm would be ‘significantly larger’ than the the London Array, currently the biggest wind farm in the world.

ScottishPower Renewables and Vattenfall will now accelerate supply chain contracts and start detailed negotiations to determine which ports could best support the project.

Geographically, the North Sea - most of which has an average depth of around 94m - is on the European continental shelf and, strictly speaking, is part of the Atlantic ocean.

It lies between Norway and Denmark in the east, Scotland and England in the west, and Germany, the Netherlands, Belgium and France in the south.

Drilling for oil - in fields mostly owned by the UK and Norway - began in the 1960s and led to still on-going arguments between England and Scotland about how revenue from the oil should be spent.

In contrast to oil and gas, wind power is both sustainable and clean in terms of emissions and is now recognised as one of the world's fastest growing energy sources,.

Harnessing its power to make electricity won’t solve the world’s climate change problems but developments like East Anglia One are definite steps in the right direction.


The Lighthouse Keeper is written by Clive Simpson - for more information, commission
enquiries or to re-publish any of his articles click here for contact information

Countdown to El Nino

Photo: Clive Simpson

 

Meteorologists and climate scientists say the world is likely to enter another El Niño weather event by this autumn upsetting 'normal' weather and driving up global temperatures further.

El Niño’s most notable characteristic is the presence of extra-warm surface water in the central and eastern equatorial Pacific ocean which tends to lead to greater average global temperatures.

Climate scientists saw a chance for 2014 to be a record temperature year even before news about the likely development of El Niño conditions - simply because temperatures continue to tick upwards.

“I would have predicted a likely top five if asked at the beginning of this year and the incipient/potential El Niño strengthens that,” said Gavin Schmidt, director of NASA’s Goddard Institute for Space Studies, one of the leading agencies that tracks global temperatures and ranks them by year.

“We saw record global temperatures in 1998, 2005 and again in 2010 when ongoing global warming was positively reinforced by El Niño events,” he added.

“There is a good chance we will see a global temperature record this year or next if a substantial El Niño event takes hold.”

Data from ocean observing satellites and other ocean sensors indicate that El Niño conditions appear to be developing in the equatorial Pacific Ocean.

Conditions in May 2014 bear some similarities to those of May 1997, a year that brought one of the most potent El Niño events of the 20th century.


The maps above show the ten day average of sea surface height centred on 2 May 1997 (left), and 3 May 2014. Darker shades indicate where the water is warmer and above normal sea level. Shades of blue-green show where sea level and temperatures are lower than average. Normal sea-level conditions appear in white. The 1997 map is from data collected by the TOPEX/Poseidon satellite, while the 2014 data is from the Ocean Surface Topography Mission/Jason 2 satellite.

During an El Niño, easterly trade winds in the Pacific falter and allow giant waves of warm water - known as Kelvin waves - to drift across from the western Pacific toward South America.

Surface waters in the central and eastern Pacific become significantly warmer than normal, altering weather patterns and affecting fisheries along the west coasts of the Americas. El Niño can also have a significant influence on weather and climate far from the tropics.

Sea surface height is a good indicator of the amount of heat stored in the water. As the ocean warms, the surface rises; as it cools, its falls. This is due to thermal expansion and contraction; the molecules in warmer water are farther apart than in cooler water.

Above-normal sea surface heights in the equatorial Pacific indicate El Niño conditions, while below-normal heights indicate La Niña.

“What we are now seeing in the tropical Pacific Ocean looks similar to conditions in early 1997,” said Eric Lindstrom, oceanography programme manager at NASA.

“If this continues, we could be looking at a major El Niño this autumn. But there are no guarantees.”

Observations from a network of sensors within the Pacific Ocean support the satellite view, showing a deep pool of warm water that has been sliding eastward since January.

The years 1997/98 brought El Niño out of the scientific literature and onto the front pages and evening newscasts. It was one of the strongest El Niño events observed, with extreme weather impacts on several continents.

North America had one of its warmest and wettest winters on record, particularly in California and Florida. Peru, Mexico, and the rest of Central and South America endured devastating rainstorms and flooding. Indonesia and parts of Asia saw disastrous droughts.

Scientists at the Climate Prediction Center of the National Weather Service (NWS) announced in early May that they foresee a 65 percent chance of a transition to El Niño in the summer of 2014.

"There remains uncertainty as to exactly when El Niño will develop and an even greater uncertainty as to how strong it may become," NWS reported.

All this might just be bad news for climate change skeptics. We've all heard by now the claim that global warming has ‘stopped’ or is ‘slowing down’ but this assertion often takes the very warm year of 1998 as the starting point.

By deliberately beginning with a hot year it can be made to look as though global temperatures aren't rising so fast.

Global temperature anomalies from 1950-2013 from World Meteorological Organisation, with years beginning with El Niño conditions in red and years beginning with La Niña conditions in blue.

You could think of annual global temperature variations as like waves on a rising tide. The rising tide is global warming and the waves are the shorter-term natural fluctuations related to phenomena like El Niño (or its flip-side La Niña), which warm (or cool) the globe by fractions of a degree.

The reality is that, as the World Meteorological Organisation (WMO) notes, each of the last three decades has been warmer than the previous one - culminating with 2001-2010 as the warmest decade on record.

Every time the world sets another temperature record, the global warming ‘slow down’ message becomes less compelling and as we enter another El Niño the climate change skeptics may finally be running low on options.

Either they finally accept the overwhelming body of evidence that global warming is real or they can come up with a new cherry-picked counter argument. Have a guess which one they'll choose - for now, at least?

The Lighthouse Keeper is written by Clive Simpson - for more information, commission
enquiries or to re-publish any of his articles click here for contact information

Tractors on the beach

The seaside town of Cromer lies on the UK’s east coast. Perched on the edge of crumbling north Norfolk cliffs, it is famous for tasty crabs, wide open beaches and a traditional Victorian pier complete with theatre and a seaside special variety show.

Its unique geographical location jutting out into the North Sea means that on a blue sky summer’s day you can watch both sunrise and sunset over the ocean.

This does imply, of course, that you are diligent enough to rise exceptionally early and still be wakeful enough at the other end of the day to repose on the pier, perhaps with beer in hand.

There is no quay-side or harbour at Cromer so the fishing boats are gathered on the shingle beach against the sea wall, each with its own tractor and boat trailer.

At the end of the 19th century, the beaches to the east and west of the pier were crowded with fishing boats. Now, you will see only a dozen boats which ply their trade from the east beach.

Crabs - dressed or undressed according to your state of desire - can be bought direct from local fishermen, or enjoyed at local restaurants in salads, tarts and sandwiches.

Today, it is not the crabs themselves that grab our interest but the rusty, salt-laden army of ancient and colourful tractors that line the beach head.

They are adorned and customised with all manner of fixtures and fittings - from plastic deckchairs as replacement seats to makeshift gear sticks and lashed on tarpaulins to keep the worst of the elements out of the workings.

Most look so rusted through with salt it seems a miracle their sand-blasted engines would ever start.

But somehow they defy mechanical odds and, with crabbing boats in tow, continue to chug across the shingle beach to the water’s edge and back.

The photos below are a selection from the Lighthouse Keeper's visit to Cromer on a sunny and warm afternoon a few days ago. All were taken with a Nikon D70 SLR camera.

All photos by Clive Simpson

LED lighting's dark side

New LED street lighting being installed by councils throughout the country to save money and cut carbon emissions could mean more sleepless nights and ultimately be bad for our health.

A study by the Campaign for the Protection of Rural England (CPRE) says some eco-friendly low-energy LED (light emitting diode) street lighting creates unnecessary glare and might have serious effects on people’s well-being.

Light pollution expert Martin Morgan-Taylor has called for more research into which wavelengths, levels and durations of lighting pose health threats - and how this compares with modern lighting practices.

The lecturer - from Leicester’s De Montfort University - says medical research is increasingly linking LED lighting with more serious health issues such as cancer and depression.

"Artificial lighting is known to have negative effects on human health and well-being if sleep is disrupted by bright light shining into bedroom windows," he said.

"What we know is that ‘white’ or ‘blue-rich’ lighting - which mimics natural daylight - is being increasingly used at night.

"This type of light suppresses the production of a circadian rhythm hormone called melatonin, which is believed to be a powerful anti-oxidant that helps to ward off some cancers," he said.

The CPRE report, ‘Shedding Light – a survey of local authority approaches to lighting in England’ is the first piece of research to ask councils how they control light pollution.

Councils are urged to give ‘careful consideration’ to the type of LED lighting they use and weigh the potential impacts that higher temperature blue-rich lighting has on ecology and human health.

The report says authorities across England could be doing more to reduce the impact of light pollution and be saving hundreds of thousands of pounds a year in the process by using dimming schemes.

It also urges councils to preserve dark skies by having a ‘presumption against’ new lighting in existing dark areas and preventing ‘inappropriate and badly designed development’ that masks views of the night sky.

But according to the survey of 83 local authorities fewer than two thirds of councils in England are actively seeking to minimise the impact of bad lighting - despite recent changes to planning laws which encourage them to do so.

The CPRE also recommends new street lighting should be tested ‘in situ’ before schemes are rolled out across wider areas to ensure that it is the minimum required for the task and does not cause a nuisance to residents.

Street lighting in England costs councils around £616m a year and can account for up to 30% of their carbon emissions.

The CPRE study reveals that despite the number of people living with severe light pollution around the country growing more than a third of councils have no formal policy in place.

Almost half of councils responding said they were involved in dimming street lights in their areas and a third say they are now switching off street lights - typically between midnight and 5am.

The research found dimming schemes are significantly more popular with residents than switch off schemes - with 68 per cent of respondents saying local communities had been very supportive.

Some council schemes to replace old-style sodium ‘orange’ street lighting with new LED lamps have attracted criticism from nearby residents.

Last month people in a west London borough complained that new LED street lamps were so bright they were no longer getting a good night's sleep.

Hounslow council started using the lights as part of a multi-million pound improvement scheme but people living close to the new LED lighting described it is ‘like living on a floodlit soccer pitch’.

Elsewhere, Leicester city council is updating 32,000 of its 37,000 street lights as part of a commitment to reduce the council's carbon footprint by 50% before 2025.

The three year £13.9m project began in March 2013 and will contribute an estimated saving of 5,350 tonnes of carbon emissions per annum.

It includes a Central Management System (CMS) for remote control of lighting levels in specific areas, allowing dimmed lighting, for example, in the early hours before dawn.

The council says replacing its existing stock with LED lighting will reduce energy usage and carbon emissions by over 40% compared with current levels, saving electricity charges (at 2013 prices) of £0.84m a year.

Using a CMS should provide a further 17% reduction, increasing the overall savings to 57% of current energy usage and carbon emissions, and slashing a total of £1.2m off its annual electricity bill.


Aerial view of Leicester city centre at night clearly showing the streets
where new white LED lighting has already been installed.

Other councils are, however, taking a more cautious route. In Essex, the streets have been equipped with one of the world’s largest wireless street lighting control systems.

Around 125,000 of the county’s street lights have been wirelessly linked, allowing centralised control and fault detection.

The council expects to reduce the energy cost of street lighting by around £1.3 million per year and to cut annual carbon emissions by over 8,000 tons.

Earlier this year Trafford council in Manchester delayed its £9.3m scheme to replace all its 27,000 street lights after a resident threatened High Court action.

Simon Nicholas, a chartered engineer and businessman, raised concerns that new LED lighting had the potential to cause health problems.

"We're breaking new ground here and new evidence is emerging all the time," he said. "The council has not fully taken these studies into account."

Mr Nicholas claimed some councils are not looking at the bigger picture ."LEDs are currently on an exponential curve in terms of development," he said.

"In five years’ time we may well have really good LED street lights. Anyone charging in now is making a huge mistake."

Emma Marrington, CPRE Dark Skies campaigner and author of the ‘Shedding Light’ report, said: "Many local authorities are taking steps in the right direction but much more can be done.

"We urge councils to do more to control lighting in their areas and ensure that the right lighting is used only where and when it is needed."

She said the research had revealed no evidence to support the fear that adjusting or dimming street lights impacted on public safety.

"We're not advocating changes where they're not appropriate - but why shine bright lights on residential streets, quiet roads and open countryside throughout the night when it's not needed?

"Genuine dark starry nights are becoming harder and harder to find which is why councils should take action to control it now. Light pollution blurs the distinction between town and country, ruins the countryside's tranquil character and denies us the experience of a truly starry sky."

The Lighthouse Keeper is written by Clive Simpson - for more information, commission
enquiries or to re-publish any of his articles click here for contact information