Eight thoughts on TfL’s “new” walking tube map

Wow, this will definitely be useful! Image: TfL.

Oh joy! Oh rapture! For here in the late summer doldrums, when significant news stories are about as easy to come by as offices with decent air conditioning, Transport for London (TfL) has released a new tube map.

Actually, that’s not quite right. It’s repackaged an old tube map by scrawling some numbers over it. Anyway: we’re never one to look a tube map in the mouth, so let’s do this.

The new tube map is meant to discourage you from getting on the tube

No, really. From the press release:

Transport for London (TfL) has launched a new version of the iconic Tube map, which shows how many steps it takes to walk between stations in zones 1 and 2.

The new map is the first official version in the world to show the number of steps between stations.

[London mayor] Sadiq Khan says the map will be a fun and practical way to help busy Londoners who want to make walking a part of their everyday lives.

In other words, if this tube map does its job right, you won’t set foot on a tube train at all. You’ll glance at the map, realise it’s only five minutes to your destination at ground level, and, pausing only to throw a smug glance at the poor saps going into the tube, start walking.

The new tube map only shows central London

To be specific, zones 1 and 2. There’s a reason for this: things are much closer together in central London, making walking a plausible option. Nobody in their right might is going to swap a Metropolitan line train from Rickmansworth to the City for a brisk seven hour stroll.

Anyway, I’m sure you’re just scrolling past this bumpf to get to the actual map bit, so here it is:

 

Click to expand, if you must. Image: TfL.

The new tube map is not actually new

If all this sounds a teensy bit familiar, that’s because it is. Last November TfL release its first official walking tube map. It’s, well, look:

Click to expand. Image: TfL.

The new one is exactly the same map only with all the figures multiplied by a factor of 100. That’s because:

Approximate steps are based on a moderate walking speed of 100 steps per minute

It’s exactly the same. It’s not “new” at all, it’s the same bloody map.


The new map isn’t necessarily that useful

For the vast majority of us, who don’t go around with Fitbits on our wrists, minutes are surely a far more intuitive measure of distance than steps. I don’t care that somewhere is 2,000 steps away; I just want to know how long it’ll take me to walk it.

More than that, this map is only useful if you’re trying to get between two places on directly connected by a single tube line. If you want to go from Oxford Circus to Holborn, then brilliant: you can see its 1,900 steps or about 19 minutes, and think to yourself, well, I might as well walk.

But what if you’re going from the middle of Mayfair to somewhere in Bloomsbury? You have no idea how long it’ll take you to get to and from the tube stations, and anyway, the quickest route is probably not the one that involves changing at Holborn. This map is effectively useless to you.

The charitable reading of this is that it’s about persuading the very small number of Londoners who do count their steps to get off the tube a stop early, or to do the last stretch above ground rather than changing lines.

The less charitable reading is that TfL have worked out there’s a flurry of press coverage (Hi, TfL!) every time they publish a new map, and they’ve decided that this is the best way to promote their campaign to get everyone walking.

The new map doesn’t tell you anything about how many steps you have to walk inside a tube station

Changing trains between the Bakerloo and Victoria lines at Oxford Circus is incredibly easy. The platforms are right next to each other. Get off at the right door, and it’s probably less than 50 paces.

Changing trains between the Jubilee and Piccadilly lines at Green Park, though, is not incredibly easy, because the platforms are nowhere bloody near each other. Scientists say the average Londoner spends approximately 5 per cent of their life changing at Green Park.

On this, the map is weirdly silent.

To be fair...

The new map shows that some journeys are really better done on foot

Look at this:

Click to expand. Image: TfL.

Remembering our conversation rate of 100 steps per minute, you can see that it’s less than 10 minutes between Bank and St Paul’s. Really not worth bothering with the tube, is it?

Cannon Street to Mansion House, meanwhile is just four minutes, while Cannon Street to Monument is around five. Cannon Street very obviously only got a tube stop because there’s a mainline terminus there. If it weren’t for that, no one would have bothered to build the thing in the first place.

Covent Garden to Leicester Square has no such excuse: 400 paces. No wonder they can get away with making Covent Garden exit only for extended periods of time without anything breaking.

Many of the shortest journeys of all are on the DLR. Which makes sense what with it being a tram with ideas above its station and all:

Click to expand. Image: TfL.

From Poplar to West India Quay it’s just 400 steps. Between Canary Wharf and Heron Quays, meanwhile, it’s just 200. That’s nothing.

(A side note: Canary Wharf’s DLR and tube stations are actually quite a long way from each other – the latter is much closer to Heron Quays DLR – but the map doesn’t bother to inform you of this, instead insisting on the fiction that there’s a nice easy change between Canary Wharf DLR and Jubilee line stations. Great work, guys. Fantastic map.)

The new map shows that some journeys are hilariously impossible on foot

Look again at that extract from the map above. It shows that, from Canary Wharf to North Greenwich, it’s 7,600 steps – or about an hour and a quarter to walk. From Canary Wharf to Canada Water, it’s 14,400 – heading for an hour and a half.

Why? Because the only to cross the river on foot around there is the Greenwich Foot Tunnel, which means going a very long way out of your way.

Click to expand. Image: TfL.

There’s a less extreme version of this phenomenon out west, where getting from Imperial Wharf to Clapham Junction, the next stop down the line, will take you about 36 minutes. Might be time to build some more bridges.

The new tube map shows that the tube map is still hideous

I know I have form for banging on about this, but seriously, all the old flaws are there in all their hideous glory. The awkward new shade of grey for the zone 2/3 bit in east London; the massively over cramped bit around Hackney. All of those were bad enough before someone started trying to add little numbers to them.

Come on TfL. Instead of mucking around with new variants on the existing map, how about you get too it and design a new one? Enquiring minds want to know.

Jonn Elledge is the editor of CityMetric. He is on Twitter, far too much, as @jonnelledge.

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The IPPC report on the melting ice caps makes for terrifying reading

A Greeland iceberg, 2007. Image: Getty.

Earlier this year, the Intergovernmental Panel on Climate Change (IPCC) – the UN body responsible for communicating the science of climate breakdown – released its long-awaited Special Report on the Ocean and Cryosphere in a Changing Climate.

Based on almost 7,000 peer-reviewed research articles, the report is a cutting-edge crash course in how human-caused climate breakdown is changing our ice and oceans and what it means for humanity and the living planet. In a nutshell, the news isn’t good.

Cryosphere in decline

Most of us rarely come into contact with the cryosphere, but it is a critical part of our climate system. The term refers to the frozen parts of our planet – the great ice sheets of Greenland and Antarctica, the icebergs that break off and drift in the oceans, the glaciers on our high mountain ranges, our winter snow, the ice on lakes and the polar oceans, and the frozen ground in much of the Arctic landscape called permafrost.

The cryosphere is shrinking. Snow cover is reducing, glaciers and ice sheets are melting and permafrost is thawing. We’ve known this for most of my 25-year career, but the report highlights that melting is accelerating, with potentially disastrous consequences for humanity and marine and high mountain ecosystems.

At the moment, we’re on track to lose more than half of all the permafrost by the end of the century. Thousands of roads and buildings sit on this frozen soil – and their foundations are slowly transitioning to mud. Permafrost also stores almost twice the amount of carbon as is present in the atmosphere. While increased plant growth may be able to offset some of the release of carbon from newly thawed soils, much will be released to the atmosphere, significantly accelerating the pace of global heating.

Sea ice is declining rapidly, and an ice-free Arctic ocean will become a regular summer occurrence as things stand. Indigenous peoples who live in the Arctic are already having to change how they hunt and travel, and some coastal communities are already planning for relocation. Populations of seals, walruses, polar bears, whales and other mammals and sea birds who depend on the ice may crash if sea ice is regularly absent. And as water in its bright-white solid form is much more effective at reflecting heat from the sun, its rapid loss is also accelerating global heating.

Glaciers are also melting. If emissions continue on their current trajectory, smaller glaciers will shrink by more than 80 per cent by the end of the century. This retreat will place increasing strain on the hundreds of millions of people globally who rely on glaciers for water, agriculture, and power. Dangerous landslides, avalanches, rockfalls and floods will become increasingly normal in mountain areas.


Rising oceans, rising problems

All this melting ice means that sea levels are rising. While seas rose globally by around 15cm during the 20th century, they’re now rising more than twice as fast –- and this rate is accelerating.

Thanks to research from myself and others, we now better understand how Antarctica and Greenland’s ice sheets interact with the oceans. As a result, the latest report has upgraded its long-term estimates for how much sea level is expected to rise. Uncertainties still remain, but we’re headed for a rise of between 60 and 110cm by 2100.

Of course, sea level isn’t static. Intense rainfall and cyclones – themselves exacerbated by climate breakdown – can cause water to surge metres above the normal level. The IPCC’s report is very clear: these extreme storm surges we used to expect once per century will now be expected every year by mid-century. In addition to rapidly curbing emissions, we must invest millions to protect at-risk coastal and low-lying areas from flooding and loss of life.

Ocean ecosystems

Up to now, the ocean has taken up more than 90 per cent of the excess heat in the global climate system. Warming to date has already reduced the mixing between water layers and, as a consequence, has reduced the supply of oxygen and nutrients for marine life. By 2100 the ocean will take up five to seven times more heat than it has done in the past 50 years if we don’t change our emissions trajectory. Marine heatwaves are also projected to be more intense, last longer and occur 50 times more often. To top it off, the ocean is becoming more acidic as it continues to absorb a proportion of the carbon dioxide we emit.

Collectively, these pressures place marine life across the globe under unprecedented threat. Some species may move to new waters, but others less able to adapt will decline or even die out. This could cause major problems for communities that depend on local seafood. As it stands, coral reefs – beautiful ecosystems that support thousands of species – will be nearly totally wiped out by the end of the century.

Between the lines

While the document makes some striking statements, it is actually relatively conservative with its conclusions – perhaps because it had to be approved by the 195 nations that ratify the IPCC’s reports. Right now, I would expect that sea level rise and ice melt will occur faster than the report predicts. Ten years ago, I might have said the opposite. But the latest science is painting an increasingly grave picture for the future of our oceans and cryosphere – particularly if we carry on with “business as usual”.

The difference between 1.5°C and 2°C of heating is especially important for the icy poles, which warm much faster than the global average. At 1.5°C of warming, the probability of an ice-free September in the Arctic ocean is one in 100. But at 2°C, we’d expect to see this happening about one-third of the time. Rising sea levels, ocean warming and acidification, melting glaciers, and permafrost also will also happen faster – and with it, the risks to humanity and the living planet increase. It’s up to us and the leaders we choose to stem the rising tide of climate and ecological breakdown.

Mark Brandon, Professor of Polar Oceanography, The Open University.

This article is republished from The Conversation under a Creative Commons license. Read the original article.