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Night blight and dark skies - new maps launched

Elementary Admin
By Elementary Admin &
13th June 2016

The most detailed ever satellite maps of England’s light pollution and dark skies, released today (13th June) by the Campaign to Protect Rural England (CPRE), have shown that Thanet Earth is the second worst light polluter in the country, only second to Tata Steel in Rotherham. [1].

Night sky over Thanet, photo by Kimberley Eve
Night sky over Thanet, photo by Kimberley Eve

Overall, Kent is the 29th darkest county of 41. The maps, produced using satellite images captured at 1.30 am throughout September 2015, show that within Kent, Ashford has the darkest skies, 68th of 326 districts. Ashford Borough Council adopted a specific Dark Skies Policy in 2014 to raise awareness about ways we can minimise light pollution and to raise the profile of dark skies as an environmental asset we are increasingly at threat of losing. [2]

Dartford has Kent’s lightest skies, 260th of the 326 districts, of course this area has major transport networks, including the Dartford Crossing.

Thanet is 241st in the rankings, with 34% of its skies in the lightest categories. Thanet Earth pledged to improve its greenhouse blinds in 2013, yet the light emitted is still severe. [3] [4] Its maximum brightness value is 584.98nanowatts/cm2*sr, brighter than anywhere else in the South East, including London.

Thanet Earth by Craig Solly 1
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Thanet Earth, photos by Craig Solly
Thanet Earth, photos by Craig Solly

The research comes at a time of increasing awareness of the harmful effects light pollution can have on the health of people and wildlife. That these skies were monitored at 1.30am illustrates just how long into the night England’s lighting spills.

The new maps were produced by Land Use Consultants from data gathered by the National Oceanographic and Atmospheric Administration (NOAA) in America. The NOAA satellite captured visible and infrared imagery to determine the levels of light spilling up into British skies. CPRE is sending lesson plans to primary schools in order to promote the enjoyment of dark skies.

We are calling on the county’s local authorities to use these maps to identify areas with severe light pollution and target action to reduce it, as well as identifying existing dark skies that need protecting.

 

Stars by Tone Netone
Stars by Tone Netone
Starry night by Ethan Sztular
Starry night by Ethan Sztular

CPRE Kent recommends that:

  • Local authorities follow Ashford’s lead and develop policies to reduce light pollution in their emerging local plans.
    The councils use CPRE’s maps to inform decisions on local planning applications and identify individual facilities that should be asked to dim or switch off unnecessary lights.
  • Local businesses review their current lighting and future development plans to save money by dimming or switching off light to reduce pollution as well as meet their promises over reducing existing pollution (e.g. Thanet Earth).

Hilary Newport, director of CPRE Kent said: “Our view of the stars is obscured by artificial light. Many children may not have seen the Milky Way, our own galaxy, due to the veil of light that spreads across their night skies. It is known that dark skies are beneficial to our wellbeing. Light pollution can disturb our sleep, prevent our enjoyment of the countryside and affect wildlife, by interrupting natural rhythms including migration, reproduction and feeding patterns.
“Councils can reduce light levels through better planning, and with investment in the right street lighting that is used only where and when it is needed.
“Our Night Blight maps also show where people can expect to find a truly dark, starry sky and we hope they will go out and enjoy the wonder of the stars.”

Summary of Kent districts (this information and more is available via the maps):

District Ranking out of 329 % in three darkest sky categories, less than 1 NanoWatts / cm2 / sr
Ashford 68 85
Tunbridge Wells 72 76
Shepway 99 74
Sevenoaks 101 47
Dover 106 66
Canterbury 112 78
Maidstone 116 55
Swale 137 47
Tonbridge and Malling 156 32
Medway 196 12
Gravesham 202 0.3
Thanet 241 8
Dartford 260 0

 

Notes:

[1] CPRE’s interactive maps can be accessed at http://nightblight.cpre.org.uk

Light pollution is a generic term referring to excess artificial light that shines where it is neither wanted nor needed. In broad terms, there are three types of light pollution:

  • skyglow – the pink or orange glow we see for miles around towns and cities, spreading deep into the countryside, caused by a scattering of artificial light by airborne dust and water droplets
  • glare – the uncomfortable brightness of a light source
  • light intrusion – light spilling beyond the boundary of the property on which a light is located, sometimes shining through windows and curtains

[2] http://www.ashford.gov.uk/dark-skies-spd-2014

[3] http://www.thanetearth.com/faqs-growing-using-light.html

[4] http://www.thanetgazette.co.uk/skies-Birchington-going-green/story-20253506-detail/story.html

June 13th 2016

  • A number of important documents have yet to emerge. For example, a rigorous transport plan and a finalised air-quality assessment. The latter is critical given that allocations at Teynham will feed extra traffic into AQMAs.
  • There seems to be no coherent plan for infrastructure delivery – a key component of the plan given the allocations being proposed near the already crowded Junction 7.
  • There seems to have been little or no cooperation with neighbouring boroughs or even parish councils within Swale itself.

The removal of a second consultation might have been understandable if this final version of the plan were similar to that being talked about at the beginning of the consultation process. It is, however, radically different in the following ways:

  • There has been a major shift in the balance of housing allocations, away from the west of the borough over to the east, especially around the historic town of Faversham. This is a move that raises many concerns.
  • A new large allocation, with accompanying A2 bypass, has appeared around Teynham and Lynsted, to which we are objecting.
  • Housing allocations in the AONB around Neames Forstal that were judged “unsuitable” by the council’s own officers have now appeared as part of the housing numbers.
  • Most of the housing allocations being proposed are on greenfield sites, many of them on Grade 1 agricultural land – a point to which we are strongly objecting.

Concerns about the rush to submit the plan

The haste with which the plan is being prepared is especially worrying given the concentration of housing in Faversham. If the town is to take a large amount of new housing, it is imperative that the policies concerning the area are carefully worked out to preserve, as far as possible, the unique nature of the town. The rush to submit the plan is likely to prove detrimental.

As Swale does not have a five-year land housing supply, it is open to speculative development proposals, many of which would run counter to the ideas contained in the current plan. Some are already appearing. This is a common situation, and one that, doubtless, is a reason behind Swale’s haste.

Our overriding fear, however, is that this emphasis on haste is ultimately going to prove counterproductive. This is because it is our view that the plan, in its current form, is unlikely to pass independent examination. We are urging Swale to listen to and act upon the comments being made about the plan and to return the plan to the council with appropriate modifications before submitting it to the Secretary of State.

Essentially, this means treating the current consultation not as the final one but as the ‘lost’ second consultation.

The consultation ends on Friday 30 April and we strongly urge residents to make their opinions known if they have not already done so.

Further information