Inflatable cloud

VIA «Over a city high overcast is expected»

Stranded: Passengers sleep on the floor at Edinburgh Airport after their flights were cancelled late last night
Tens of thousands of families are facing air travel chaos from today – and into the half-term holidays – as a thick cloud of volcanic ash descends over the UK.
The towering plume of Icelandic ash, smoke and steam hit Scotland and Ireland last night, bringing disruption to airlines, leading to the cancellation of 252 flights - and forecasters say the plume is expected to reach Heathrow airport by 1pm bringing further chaos.
British Airways and a host of other airlines last night cancelled all flights between London and Scotland until 2pm today, and the Civil Aviation Authority has said the ash cloud is moving unpredictably and changing by the hour.
Closer to the source: A plane flies past smoke plume from the eruption of the Grimsvotn volcano in Southeast Iceland but flights in Britain are being cancelled
Stationary: Eastern Airways, which has cancelled all flights to an from Scotland, now has its planes standing still at Aberdeen Airport
Shortly after 8am the Met Office said that high level densities of ash were likely to be confined to Scotland and northern England today.
A Met Office spokeswoman went on: 'The weather is uncertain over the next few days. We have a low pressure system moving in tomorrow and there could be some westerly winds.
'However, very small changes in weather patterns can make very large changes in how the ash will move.'
Between 30 and 40 BA flights will be affected from airports including Heathrow, Gatwick and London City to and from Glasgow, Edinburgh and Aberdeen. The airline runs 80 flights a day between these airports.
Pink lightening: The stormy conditions around the Grimsvotn volcano look dramatic but authorities insist that it poses a lesser threat than the last ash cloud
Problems: The departures board at Edinburgh Airport shows the disruption caused by the volcanic ash cloud already
Royal Dutch Airlines KLM cancelled the 16 flights scheduled for this morning to and from Aberdeen, Glasgow, Edinburgh and Newcastle.
The airlines said customers on any cancelled flights will be able to claim a full refund or rebook on to alternative flights – and that all other flights will operate as scheduled.
A BA spokesman said: ‘We would urge customers not to travel to the airport if their flight has been cancelled.’
At least 36 flights were cancelled in Scotland last night and today, as airports across Britain were put on stand-by for imminent disruption.
Easy Jet, Aer Lingus, Flybe, KLM, Logan Air and Eastern Airways have all cancelled flights to and from Scotland.
Ryan Air has been ordered by the Irish Aviation Authority to cancel flights to and from Glasgow, Prestwick, Edinburgh and Aberdeen.
Presidential flight: Barack Obama and Air Force One touch down at Stansted Airport last night after he was forced to rearrange his plans because of the ash cloud
'Perhaps it's a little bit too early to be absolutely sure about that, but clearly that's the most important thing - if the ash stops belching out of the volcano then, after a few days, the problem will have cleared, so that's one of the factors.
'The other is the wind speed and direction. At the moment the weather patterns are very volatile which is what is making it quite difficult, unlike last year, to predict where the ash will go.
'The public can be absolutely confident the regulators that airlines are only able to operate when it is safe to do so.'
U.S. President Barack Obama flew from Ireland to London last night – a day early – to ensure the cloud does not delay his state visit.
Haves and have nots: President Obama flew early so he could avoid being stuck in Ireland longer than he wanted, but these stranded passengers at Edinburgh Airport didn't have that luxury

Grey skies: Emergency services vehicles in Kirkjubaearklaustur are covered in a thick layer of the volcanic ash from clouds that are now passing over Britain


How are we going to get home? Tourists leave the Islandia Hotel yesterday in Nupur as ash continue to pour out of the erupting volcano
What happens now depends on three things. How long the volcano continues to erupt (this could be days or just hours); how the airlines decide to interpret the ash guidelines issued by the Civil Aviation Authority – which is unknown – and, lastly, the weather.
With a fair wind and a bit of geological luck, holidaymakers might manage to get away as planned this weekend.
But if, like the millions of Britons who enjoyed the blissfully silent skies of April last year, Iceland’s trolls and elves decide they too appreciate the silence of plane-free skies, we could be looking at yet another week of travel nightmare for millions.
UK airspace is 'better prepared' for volcanic ash cloud as flights could be threatened

source: dailymail

VIA Nightmare for air passengers begins as hundreds of flights are cancelled and volcanic ash threatens half-term getaway

Clouds over London

Clouds by Tomas Saraceno

VIA «Olympic clouds»

A provisional five-day forecast by the Met Office shows a dense layer of ash engulfing the country on Friday – the start of the bank holiday weekend and half term.
High concentrations would cause serious delays and cancellations for air passengers, and trigger knock-on effects for flights over one of the busiest weekends of the year.
Hundreds of holidaymakers transport plans were in ruins last night, but thousands more face trouble in the coming days as the ash heads south
Some planes would be able to take off and land under the ash cloud, but the Civil Aviation Authority said the number of flights may have to be 'rationed'.
The warnings have left many anxious about whether their flights at the start of half term will be disrupted. Up to two million people are expected to fly in and out of the UK over the four days of the bank holiday weekend.
Officials insisted that Britain and the rest of Europe have learned from last year’s fiasco, caused by another Icelandic volcano, when planes were grounded for six days.
The screen says it all: The arrivals board at Edinburgh airport shows how many flights were cancelled and long delays for those that were expected
It caused misery for tens of thousands of passengers, many of whom were stranded abroad and were forced to make their way home by road, rail and sea.
Although Transport Secretary Philip Hammond is confident that the great getaway will still happen, confusion reigned in Whitehall last night.
This was largely because of the unpredictable nature of weather and volcanic activity.
Forty winks: A passenger tries to sleep after failing to secure alternative accommodation or transport after his flight was cancelled yesterday
Yesterday thousands of passengers endured disruption as Scotland became a virtual no-fly zone.
British Airways cancelled all flights to and from Glasgow, Edinburgh and Newcastle, while BMI, easyJet, Flybe and Aer Lingus all scrapped services.
Ryanair claimed the cancellations were an over-reaction but went on to halt all its flights in and out of Scotland. More than 250 flights were cancelled across Europe.
After a test flight up to 41,000ft in Scottish airspace, airline boss Michael
O’Leary described the so-called ‘red zone’ of highest density volcanic ash over Scotland as a 'non-existent, mythical and a misguided invention'.
The latest satellite image showing the ash plume from the Grimsvotn volcano, under the Vatnajokull glacier in south-east Iceland
The crisis has been sparked by the eruption of Iceland's Grimsvotn volcano, which has been spewing out plumes of ash, steam and smoke since Saturday.
Scientists say high concentrations of ash can cripple aircraft engines.
Since last year's eruption, airlines and the Civil Aviation Authority have eased the rules and now allow flights through 'low density' ash clouds.
Airlines that want to fly their planes through medium and high concentrations have to convince the CAA that it is safe.

Grounded: Two Ryanair jets and a FlyBe aircraft sit on the tarmac at Edinburgh airport yesterday
Long wait: Using their suitacase as a makeshift chair, two passengers at Glasgow airport pass the time by reading a book and checking a mobile phone
Waiting and more waiting: Passengers at Edinburgh Airport wait to board buses to other airports after their flights were cancelled
If the UK is overshadowed by high concentration ash, airlines would be forced to cancel and delay flights, and timetables could be disrupted for days.
Decisions on whether to fly are based on forecasts from the Met Office's Volcanic Ash Advisory Service, rather than real-life measurements of concentrations.
Although the Met Office has part ownership of a research plane, it is currently being used in Ireland to study 'marine organic particles'.
A dedicated Met Office atmospheric research plane, commissioned after last year's volcanic chaos, is not due to arrive until next month.
Huge power: The eruption makes a spectacular sight over the Icelandic landscape
On the ground: A car drives towards the erupting Grimsvotn volcano which has sent thousands of tonnes of volcanic ash into the sky
Stunning: As the volcano erupts, huge dark ash and storm clouds gather across the Icelandic skyline
Yesterday it was in talks with the German Aerospace Centre to borrow a test plane.
Last night the Met Office said it stood by its five-day prediction showing the entire UK covered in an ash cloud of the highest density from 35,000ft to 55,000ft.
A spokesman for the Met Office said: 'These are the most recent charts available and are on our website. We stand by them.
He added: 'It is based on the assumption that the volcano will continue to erupt at the same rate. It is a guide, not definitive.'
source: dailymail

VIA Half term holiday flights on knife edge: Family breaks under threat as Met office warns ash cloud could blanket Britain

VIA Machine Head Announce Album Title, Release Date and European Tour

The actual laser modeling is done by mounting a laser from a tripod and shooting the gallery, taking time to measure the distance between the scanner and every point it hits. Each one of these points represents a distance — by mapping millions of points from a single location, historians can measure how the building expands and contracts during the day, as well as how it shifts over longer periods of time. By combining the point cloud data generated by the laser scanner with on-site photographs taken at the same time, Tallon has created extremely accurate models of the underlying structure and design of the cathedral, and identified points where the cathedral’s masons either deviated from the original plan or paused work to allow the ground to settle.

Tallon’s research, for example, has found that the Gallery of Kings — the massive, three-doorway facade that dominates one side of the cathedral, had shifted almost a foot out of plumb. Researchers had previously suspected that work had stopped on the area for up to a decade, and this new work suggests why that might have occurred. The masons, realizing that the building was shifting in the thin, sandy soil, halted progress to give the ground time to settle and resumed a decade later.

Other findings from Tallon’s work include data that shows the internal columns of Notre Dame don’t align perfectly, and that workers likely incorporated existing structures in the area as part of the cathedral rather than tearing them out altogether. The flying buttresses, which were often thought to be a later addition to the architecture, were likely installed from the very beginning to counterbalance the effect of the vaulted ceilings (which tended to force the walls outward). External support from flying buttresses would push the walls inward, counterbalancing the vaults. The walls of Notre Dame have scarcely moved since they were constructed — a testament to the exquisitely balanced and counterbalanced supports.

National Geographic has a full update on the process and technology used to create the laser point models and a discussion of the work done at Notre Dame and other Cathedrals. Laser and LIDAR-assisted mapping has become more prominent in recent years, thanks to its ability to show us where long-buried structures or archaeological remains may still exist. Thermal maps and subtle gradation variations can also show remnants of mankind’s activity in an area, even when shifting sands or jungle terrain has obscured the more obvious visual reminders. Human buildings and structures absorb heat differently than surrounding terrain even when buried, which gives us a window into the past when conventional methods or other records come up short.

Author: Joel Hruska | Source: Extreme Tech [June 24, 2015]

Cloud 360

VIA «Park observatory»

Fresh from their Seychelles honeymoon, a well-tanned Duchess of Cambridge performed her Royal duties with aplomb as she spoke to Mr and Mrs Obama in a 10-minute private meeting.
There were smiles all round moments earlier when the Obamas arrived at Buckingham Palace and were met by the Queen and Prince Philip.
Sorry we couldn't make the wedding: The couples chat and no doubt the recent Royal marriage ceremony was a topic of conversation

Friendly: The couples met before President Obama was the subject of a 41-gun salute
They arrived in the Presidential limousine known as The Beast, which pulled into the front of Buckingham Palace just before noon.
After the meeting of the heads of state, the Obamas spent about 10 minutes speaking with Prince William and the Duchess of Cambridge, before meeting more Royal figures.
Senior members of the Queen's household were introduced to the Obamas in the Bow room.
Among them were the Queen's private secretary Christopher Geidt, her treasurer Sir Alan Reed, master of the household Air Vice Marshall David Walker, and the Lord Chamberlain Earl Peel.
Others who met the president and his wife included Brigadier Archie Miller-Bakewell, Philip's private secretary, Lieutenant Colonel Andrew Ford, comptroller of the Lord Chamberlain's Office, and a number of ladies-in-waiting to the Queen including Virginia Ogilvy, Countess of Airlie.
Having a giggle: The Duchess of Cambridge and Michelle Obama enjoy a brief moment of hilarity during their meeting
Meet and greet: The Queen welcomes Barack Obama to Buckingham Palace, watched by his wife Michelle and Prince Philip
Old friends reunited: Two years on from their last meeting, the Obamas and the Queen and Prince Philip look pleased to see one another
The Obamas were then taken to Buckingham Palace Gardens where they faced with a guard of honour, 101 soldiers from the 1st Battalion, Scots Guards, and three officers lined up in two rows. Behind them were the Band, Pipes and Drums of the Scots Guard.
The air was shattered by the noise of booming gunfire as a 41-gun salute was begun by the King's Troop Royal Horse Artillery in nearby Green Park while simultaneously at the Tower of London another was fired by the Honourable Artillery Company.
The guardsmen gave a royal salute and then the American national anthem was played in honour of the US president.
Hold on to your hats! The windy weather plays havoc with the Royal party

Ceremonial welcome: The Obamas are joined by members of the Royal Family to hear the U.S. national anthem
The British National Anthem was not performed as the Queen is in residence at the palace and so it was needed to mark her arrival at the historic building.
Major Rory Shannon, in command of the guard of honour, approached the heads of state and formally stated that the troops were ready for inspection. Mr Obama, with the Duke, then walked down the terrace steps to the waiting soldiers in their bearskins and scarlet tunics.
The major escorted the president along the two lines of guardsmen as Philip followed a pace behind.
The U.S. leader could be seen exchanging words with the senior officer as they passed the troops who, when not performing ceremonial duties, are fighting soldiers.
Guard of honour: Prince Philip accompanies Mr Obama as they inspect soldiers of the Household Cavalry in Buckingham Palace Gardens
Protection: The heavily-armoured Presidential limousine arrives at Buckingham Palace
At the end of the inspection, Mr Obama took his place beside the Queen and watched as the guardsmen marched off before the party headed inside for lunch.
Earlier the President declared the UK-U.S. partnership 'an essential relationship for us and for the world'.
But he began his visit today by making a solemn statement about the loss of life in Joplin, Missouri, where a tornado claimed 116 lives on Sunday night.
The U.S. president flew into Stansted airport ahead of schedule last night to avoid the possibility of disruption to air travel from the ash cloud from an erupting Icelandic volcano.
He had been due to fly from Ireland on board Air Force One this morning to be greeted at the Essex airport by the Prince of Wales and Duchess of Cornwall.
But the decision was taken to bring forward the visit after the announcement of cancellations to some UK commercial flights due to the ash billowing from the Grimsvotn volcano - with more disruption expected in the days to come.
Arrival: Crowds strain to take pictures of the Presidential limousine, accompanied by police outriders, as it arrives at Buckingham Palace
Welcoming party: President Obama, left with Prince Charles, and First Lady Michelle, right with the Duchess of Cornwall, leave the U.S. Ambassador's residence Winfield House today

Relaxed: The President enjoys a joke with Prince Charles, left, while Michelle Obama and the Duchess of Cornwall are deep in conversation
The state visit - only the third by a U.S. president to the UK in 100 years - comes at a time of close co-operation between Britain and America on issues ranging from Libya to Afghanistan, counter-terrorism and the Middle East peace process.
This strong partnership was reflected in a joint article written by Mr Obama and Prime Minister David Cameron for The Times, in which they declare: 'Ours is not just a special relationship, it is an essential relationship - for us and for the world.'
After his early arrival, Mr Obama was spending the night in the US ambassador's residence in London, Winfield House in Regent's Park.
Solemn: Barack Obama began his British visit today by making a statement about the appalling loss of life in Joplin, Missouri, where a tornado left at least 116 people dead
Despite the hasty change to their planned schedule, Mr Obama and wife Michelle were still given the formal welcome expected of a state visit.
They were greeted by the Lord in Waiting Viscount Brookeborough, who met them on behalf of the Queen.
Instead of a traditional red carpet they left the plane on special red-carpeted stairs because of windy conditions at the airport.
Later today the Obamas will view the royal picture gallery before a wreath-laying visit to Westminster Abbey and a state banquet in the evening.
The couple will stay as guests of the Queen at Buckingham Palace tonight and tomorrow.
Tomorrow will be devoted to politics, with talks between Mr Obama and Mr Cameron at 10 Downing Street, followed by an address to both Houses of Parliament, in which the president is expected to say that the US has no closer ally in the world than Britain.
In their joint article, Mr Obama and Mr Cameron put the transatlantic partnership at the heart of the drive for global stability and prosperity.
Hello Britain: President Barack Obama and First Lady Michelle step off Air Force One as they arrive at London Stansted Airport last night
Touchdown: Air Force One arrives at Stansted Airport, London ahead of schedule due to fears volcanic ash would spread over Britain today
'When the United States and Britain stand together, our people and people around the world can become more secure and more prosperous,' they wrote.
'And that is the key to our relationship. Yes, it is founded on a deep emotional connection, by sentiment and ties of people and culture.
'But the reason it thrives, the reason why this is such a natural partnership, is because it advances our common interests and shared values.
'It is a perfect alignment of what we both need and what we both believe. And the reason it remains strong is because it delivers time and again.
'Ours is not just a special relationship, it is an essential relationship - for us and for the world.'
They also promised not to abandon the protesters fighting for democracy in the 'Arab Spring'.
Flying the flag: British and American colours stand along The Mall leading to Buckingham Palace in preparation for the visit
'We will not stand by as their aspirations get crushed in a hail of bombs, bullets and mortar fire,' said the two leaders.
'We are reluctant to use force, but when our interests and values come together, we know we have a responsibility to act...
'We will stand with those who want to bring light into dark, support those who seek freedom in place of repression, aid those laying the building blocks of democracy.'
It comes after Foreign Secretary William Hague and US secretary of state Hillary Clinton sent out a message to Syria's President Bashar Assad to halt his regime's repression of pro-democracy activists.
Speaking to American reporters shortly before Mr Obama's arrival, Mr Cameron said there was 'an incredible alignment of views' between his administration and the White House on key global issues, including the military mission in Libya, the uprisings of the Arab Spring, Afghanistan and Pakistan.

'Smile, honey. We'll be meeting the Queen and that hat cost a lot of money.'
And he paid lavish tribute to Mr Obama's style, saying that as well as being 'courageous' over issues such as Osama bin Laden, he was also 'thoughtful, measured and serious'.
The current closeness of the UK-U.S. relationship was remarked upon at a joint press conference following talks between Mr Hague and Mrs Clinton at the Foreign Office.
Mrs Clinton joked: 'If there were any closer alignment, we would worry about each other.'
The two leaders are expected to drop in on a barbecue being hosted by their wives Michelle and Samantha for families of military personnel involved in joint UK-U.S. missions overseas.
Mr Obama is due to travel on to France on Thursday morning for the G8 summit of leading industrialised nations in Deauville, also being attended by Mr Cameron.
Raw Video: Obamas Visit Buckingham Palace

source: dailymail

VIA The Prince and the President: William greets Obama and Michelle at the Palace as tanned Kate takes to Royal duties like a natural

VIA Iceland's Grimsvotn Volcano Erupting