I’ve been obsessively checking satellite imagery to witness the UK turn from green to yellow, thanks to the period of extreme heat and lack of rain Europe has been enduring. The parched landscape is unlike anything I’ve seen before and a cloud free day today (10th August) has revealed the true extent of the drought.
Its shows with extraordinary clarity where the UK gets the most rain (and where some has fallen) thanks to being more to the west or at higher elevations.
The South East has gone from green to yellow and now almost black such is the intensity of the drought. With no significant rain in the forecast and more intense heat in the coming days, its an image that is only going to get more shocking as the summer wears on.
There’s also a range of educational materials about the climate crisis here.
Footnote: Aren’t crops yellow this time of year?
Yes! Of course they are! And there is a distinct geography to the pattern of agriculture that makes the parts that grow crops such as wheat more ‘yellow’ than others, especially to the South and East. Here’s a nice map from Natural England that shows the land uses that can contribute to the different colours we might see in England.
But we’ve had the driest July since 1935, so areas that would hold out as green for most of the summer have now become tinder dry. The rainfall map from the Met Office lines up very well with the most parched areas.
…and finally I went back to the last spell of record breaking weather – August 2020 – and processed the satellite image from the same time (7th August) in the same way as the one above. Here you can see the difference. So even by the standards of previous years of extreme heat, our ‘green and pleasant land’ is looking scorched.
With each new temperature record that tumbles the UK, climate skeptics have a standard stock phrase: ‘it was this hot in 1976’. Of course it wasn’t, and crucially the planet overall was not as hot then as it is now. Parts of the UK media have had their part to play in fueling skepticism about the seriousness of the situation and I was struck by how quickly the headlines changed from ‘how bad can it be?’ to ‘this is really serious’ as temperature records tumbled and fires began to rage.
It got me thinking about a map I had spotted within the Atlas of Drought in Britain 1975-1976 – a book I’d happened upon in the UCL Geography map library.
Amongst the various maps showing demands on the water supply and ground water there was a page on the ‘newspaper perception’ of the drought.
In his accompanying text Ken Gregory writes:
Extremes of weather conditions such as the 1975-1976 drought can be approached objectively employing established scientific methods, but the significance of the characteristics of a specific period of weather as perceived by the population as a whole depends upon the diffusion of information and upon the way in which it the physical events are portrayed by press, radio and television.
I think this is a fascinating insight given how firmly lodged ‘the heatwave of 1976’ is so firmly lodged in the public consciousness of the UK thanks to the media’s reminders of it.
So to see the level of media interest in the 1976 heatwave/drought Gregory set about measuring the column inches devoted to the issue and then calculating a point score to gauge the amount of coverage. A front page spread would be given a higher score than the same spread appearing on page 20, for example.
From this he was able to produce a map that showed media interest over time across 9 regions of England & Wales.
He found both national and regional patterns across ‘three phases of reaction’.
Legacy of below average rainfall during the winter of 1975/76 leading to concern in South Wales about low reservoir levels.
Late June & early July 1976 when the heatwave hit which was two weeks of shade temperatures exceeding 32 degrees C for two weeks.
By August the extent of the drought was becoming clear, leading to a peak in interest.
There were interesting geographic differences in the length and timing of the reaction. Gregory noted that, for example, those regions benefitting from groundwater supplies, such as Southampton and Reading, moved on much more quickly from the issue during the autumn of 1976, whereas areas such as Derby were still suffering the effects of near empty reservoirs. The plot below gives an indication of how quickly interest grew and then slowed set against key events that year.
Source: Atlas of Drought in Britain 1975-1976
Of course the Internet and the decline in local media outlets means that such a map would not be possible to create today so we’d struggle to recreate Gregory’s analysis, but I would love to do a follow up to see how the media back then generated a collective memory that still impacts on perceptions of the record breaking summer of 2022.
This week I took to Twitter to offer a critique on way we might map (at the time of writing) the nearly 1 million people fleeing Ukraine.
It’s time to innovate the ways we show people fleeing war. 8 arrows for 874,026 human beings is not good enough. It’s also the same visual language we use for the invaders…It’s clear but shows just 8 (shocking) numbers: Poland: 453,982 Hungary: 116,348 Republic of Moldova: 79,315 Other European countries: 69,600 Slovakia: 67,000 Romania: 44,540 Russian Federation: 42,900 Belarus: 341
It’s had a great response so I wanted to set out some of my thinking a bit more and feature some of the responses to my critique.
The first thing to say is that I am not singling out the BBC here for particular criticism – they do great work – theirs just happened to be the map that appeared first in my timeline. Second, I think we should acknowledge that the Ukrainian crisis is not the first – and sadly won’t be the last – that requires us to map the movements of millions of people.
When we create a map or chart we should ask ourselves three questions:
Who is it for?
What will the map be displayed as?
Why is it being produced?
These questions are important because they will influence the information we include, its design and how we might share it. For example you cannot use video if you are creating a map to be printed on paper, and you wouldn’t use very technical language with lots of detail for a map that might be shown for a few seconds on TV to encourage an evacuation to safety. Click here for more examples.
So lets look again at the BBC map with the above questions in mind.
Who: A global audience – probably one of the broadest and most global audiences there are. So the map needs to be easy to read, unambiguous and – crucially – factually correct.
What: I think this is the biggest question that we overlook as consumers of these maps, but something that their designers have to grapple with. In this case the map needs to work as a thumbnail on social media, a slightly larger version on the BBC website and as an animation for the BBC News broadcasts. It needs to work the size of a postage stamp or a on an 86″ HD TV monitor. Nuance and detail are rarely options in this context.
Why: To communicate the impacts of the invasion to as wide an audience as possible.
The map is effective based on these criteria – but I think it (and others like it) need to be looked at more critically to see how they might contribute to some of the more harmful narratives around migration.
There’s an excellent piece by David Shariatmadari entitled ‘Swarms, floods and marauders: the toxic metaphors of the migration debate‘ that I thought of here – we often talk about a tide of migrants, which can be dehumanizing and a trope that the map – perhaps inadvertently – contributes to with the flow of blue cascading out of Ukraine*.
[*John Burn-Murdoch has questioned this association – for me I think its the combination of symbol + colour + language often used to describe such a map that gives this impression. On reflection the blue in and of itself is less of a concern (see The Economist’s map below, which I like. To follow discussion see here.]
It also gives the sense of invasion – not least because the same arrows are used in the BBC’s maps of the Russian advance.
I have nothing against arrows and connecting lines, they can be extremely effective, but in these maps they over-stretch the data.
We have eight numbers – nothing more – that are simply the counts of people who moved from Ukraine to neighboring countries. If we had city to city flows – or even detail of border crossings and routes taken then arrows can help here, but we don’t. With more flows you need some sense of direction so arrows are useful or as the New York Times has done here you can use tapered lines.
The eight numbers (Poland: 453,982 , Hungary: 116,348, Republic of Moldova: 79,315, Other European countries: 69,600, Slovakia: 67,000, Romania: 44,540, Russian Federation: 42,900, Belarus: 341) are not so large they are hard to interpret, but large enough to be shocking and I think stand alone in their power. The BBC map groups them into 4 broad categories of unequal size.
The result is a loss of information combined with something that is a bit tricky to interpret – as you scrolled past on your phone, did you spot the second smallest category is 10 times larger than the smallest? This is immediately clear from the numbers.
With the lack of precise origin and destination information we also have to avoid the trap that arrows can give us a sense of the journey or flow. All we know from the data is that a border was crossed somewhere between two countries. Proportional circles overlain on a basemap, the approach taken by UNHCR, avoids this issue.
What can we do?
So how might we create more human, less stereotypical maps of people fleeing war, whilst still remembering the checklist of Who? What? Why?
Financial Times: Precision and Flow
This from The FT is a huge improvement – it keeps the dynamism and movement but it keeps the precision we have in the data.
They report the actual numbers – as well as the total over Ukraine – and sit the circles over the centre of each country to make it clear we have no more precise data on where people have moved to within countries. The choice of colour keeps us well away from the water imagery (tide, flood etc) we are so used to hearing and could do without.
An arrow or a line on a map can never capture the depth and diversity of experiences people have had following Russia’s invasion. The fear, the cold the uncertainty are best shared through words and pictures, but we can think about giving visual reminders that the arrows represent people and not something abstract or distant. In Atlas of the Invisible these are some of the issues we grappled with when trying to show cross border movements from Syria and opted for icons and smaller arrows. I reflect on the responsibilities of creating the map in this video.
So what are the other ideas people have had?
Ken Field responded with a map that breaks the arrows into dots to each represent 100 people.
It’s more abstract than using icons and serves to soften the arrows a little. With animation, perhaps to show the numbers increasing over time, it certainly underlines the numbers involved.
Daniel Huffman suggested the use of icons – in this case isotypes – to give a sense of the numbers.
The overall impact is less dramatic than sweeping arrows (I quite like that) but it slightly risks leaving people wanting more information – how many women vs men vs children have left Ukraine, for example? Can they be shown in the icons?
Small icons give the immediate sense of people on the move but are abstract enough for people not to hanker for more detailed demographics, they are moving to the centre of countries shown as proportional symbols with the exact figures and there is no sense of using arrows etc for dramatic effect – things are dramatic enough already!
Joshua Stevens has posted a great response to these points – see here.
A Couple of Final Examples
It is impossible to create maps that can truly share the full complexity – and horrors – of war and there is a place for more abstracted representations of it, especially in breaking news situations. After all the maps often supplement text, video and images that are able to offer the important personal experiences much more effectively.
That said, here are a couple of inspiring examples of maps that do add the extra layers or detail or capture the human element lost to arrows.
One of my favourite is Levi Westerveld’s Those Who Did Not Cross that attempts to visualise the extent of the deaths in the Mediterranean as people attempt to cross to Europe. He has made some compromises around the precise locations of shipwrecks and so on, but that doesn’t matter. What we see here is the scale of the toll.
This ESRI Story Map The Uprooted is a nice example of combining a range of media – with the maps front and centre – to help communicate the breadth and depth of the journeys taken to Europe around 2016.
Both maps however take much more time to make than the BBC one and only work in specific formats so they won’t be reproduceable in breaking news stories, but there are elements we might take forward and develop when we think more carefully about how to show human flows.
Excited to announce that we have funding for a +3 studentship in the UCL Department of Geography for the project “An Atlas of Health and Social Inequalities”. The research will be carried out in association with the Health Foundation and will comprise the creation of a range of innovative datasets presented through a series of ground-breaking maps and graphics. The project will centre on the Health Foundation’s Social and Economic Value of Health: Place programme, which is designed to generate new knowledge about the ways in which the physical and mental health of a population shapes their social and economic outcomes. The Health Foundation have funded a number of research projects already that focus on understanding the relationship between a given population’s health and the health of individuals within that population.
The PhD will benefit from insights from these projects and focus on the creation of a nationwide atlas to demonstrate the social and economic value of health. It will produce a series of research-led maps created from innovative and granular datasets to demonstrate the new ways that health data can be visualised. These will convey a range of variables including health metrics such as mortality, self-reported health, prevalence of specific health conditions, and social and economic outcomes including employment, pay, structural changes to industrial sector composition and social fragmentation.
The work will be supervised by myself (firstname.lastname@example.org) and Dr Anwar Musah (email@example.com), to whom enquiries may be directed. The successful applicant will hold a First or Upper Second Class honours degree in a quantitative social science or computer science discipline and/or similar Masters qualification.
For further details on eligibility etc please see here.
A simple line chart might be all you need to communicate the patterns in a dataset, but it might not be given a second glance. Getting the viewer to work a little harder to interpret and think about a graphic can be a very effective way of generating engagement. This is where the art meets the science of data visualisation.
There are many ways charts can misfire, but that doesn’t mean we shouldn’t try something new and it certainly doesn’t mean we should heed calls to do things the ‘right’ way if we miss a chance to change how people look at a dataset.
I actually rather like it and think it does it’s job well….so in it’s honor and in honor of any viral plots in the future, here’s my favorite examples of maps/ charts that you can say present data a particular way for ‘literally no reason’. Or you can say by doing something a bit differently they create much more engaging graphics – I’ll leave it to you to decide!
Du Bois’ Spiral
A hero of mine and pioneer of innovative visual forms, Du Bois chose a spiral over a bar chart for his ‘City and Rural Population’ graphic, and what a difference that makes. You can read more here and here, buy the book if you can.
Emma Willard pioneered many maps/ graphics but the example I want to flag here is her ‘Temple of Time’. A normal timeline would have sufficed, but we wouldn’t be talking about it now.
Messing with Maps
Maps are full of distortions, but we are used to seeing them with north at the top. The sea is generally blue, the land green and all to often Europe is at the centre. You might ask why we should mess with these established norms if people are used to them – I would argue that if you can effectively disorientate the reader then you can get them to think much more deeply about the map. I’m not suggesting all maps should do this because done badly it’ll cause more harm than good, but here some examples that I think work well.
Sabine Réthoré‘s rotated Mediterranean completely threw me when I first saw it, and got me to really re-appraise my impressions of the region.
Valentina D’Efilippo’s Poppy Field chart is a multi-dimensional plot that charts the deaths during the Great War. Much of the data could be portrayed as a scatter chart with proportional symbols, but choosing the imagery of a poppy adds a powerful angle that leaves the reader in no doubt about the horrors of war.
Joy of Circles
This SCMP chart of the world’s languages carves out proportions of a circle – a square treemap might have done it just as well, but visually would have lacked the appeal of this perhaps less precise approach.
Peaks and Troughs
Finally, I created this map of world population nearly a decade ago to show it’s peaks and troughs. You can’t accurately establish the population of specific regions, perhaps as you might a choropleth, but that isn’t the point.
Every Christmas I love being reunited with my growing collection of globe-themed baubles. Each has its own cartographic style – from the glittery to the antique – and I take a moment each year to admire them. As I hung the final one on the tree this year, I spotted something that offered a fascinating insight into how geopolitics can play out in the unlikeliest of places: my box of decorations.
I spotted an attribution on one of the globes to ‘Beijing Boom Cartographic’ and ‘Sinomaps Press’. I then looked at the others and found – in tiny writing – ‘Copy certified by the Survey of India’.
All maps mark a moment in time so borders are always subject to change- especially if the globes were made in different years – but both China and India have tight controls on how borders can be drawn. Even something as innocuous as a Christmas decoration will need to have the ‘correct’ state-sanctioned map, which will differ from international conventions. And sure enough I have spotted some important differences in how the world is shown on my Christmas tree…
South China Sea
The South China Sea is a contested area of ocean where China has made several claims. On the Chinese made globe I’ve pointed to the ‘nine-dash line‘ marked in red that marks the extent of the Chinese claim. It is also one of the most heavily labelled parts of that globe including labels for the ‘South China Sea Islands’. Compare that to the Indian made globe, none of these labels exist and Taiwan is given it’s own colour to differentiate it from mainlined China. On the Chinese globe they are they same.
India, Pakistan and China are involved in a border dispute over the region of Kashmir and this too plays out on the Christmas baubles. You can see on the Indian made decoration the Indian border kinks into China and prevents Pakistan from touching China. On the Chinese bauble we see Pakistan extending to China and the kink is gone.
Of course these differences will go unnoticed for the vast majority of the globes hanging from tree each year (I had to use a macro lens to photograph them), but if I were to take the Indian globe to China and I’ll be reprimanded by the authorities. The first forbidden items listed on Indian customs declaration forms are ‘Maps and literature where Indian boundaries have been shown incorrectly’ so if I were to pack a Chinese decoration in my suitcase I might be refused entry.
The stockists of these globe decorations look to India and China to manufacture them cheaply perhaps without realising they are subject to these geopolitical disputes that are now being played out on my Christmas tree. Fortunately I live where maps – however contentious – can be safely displayed so I’ll keep hanging the globes, but I’ll certainly never look at my collection of baubles the same way again.
I’m a geographer who’s produced many maps depicting human effects on the environment – and demanded we create more of them. A question I am increasingly asked is: how do you not feel powerless in the face of such depressing data?
With climate anxiety now affecting young people’s mental health, and widespread doubt about whether limiting global warming to 1.5℃ is possible, it can be tricky to answer. What I’ve found is that we can use a surprisingly commonplace tool to communicate danger and to bring about positive change: the map.
Throughout history, it has generally been society’s elites who have used maps to exploit, not help, the planet and its people. They’ve used them to pinpoint oil reserves, carve up continents and justify wars. But maps can also be used to empower and defend those who face seemingly insurmountable obstacles.
Over a century ago, the women’s suffrage movement developed one of the largest ever map-based campaigns, spanning decades and continents, as part of its drive to give women the vote. We need to use their principles if we are to persuade leaders not just to deliver but to improve upon the promises made at the recent UN climate conference COP26.
What the Suffragists did
Suffragists used maps to celebrate jurisdictions across the world that had given women the vote – and to shame those that had not. They reasoned that the action of some policymakers would highlight the inaction of others, betraying the most misogynist politicians and their supporters.
American suffrage maps with the headline “Votes for Women a Success” showed the US states that had granted women the right to vote. To challenge those with backward views, some versions of the map were also adorned with provocative statements such as “How long will the republic of the United States lag behind the monarchy of Canada?”
In 1930s Europe, where France was still withholding votes for women, suffrage campaigns published maps showing the country’s outdated approach to democracy in contrast to its neighbours such as Belgium, under the banner “French women can’t vote! French women want to vote!”
Suffrage maps were plastered on walls, hung across streets, paraded on sandwich boards, printed in newspapers and even used to petition the US Congress.
Geographer Christina E. Dando has pointed out how American suffragists’ work was not just focused on creating maps, but changing them. For example, the map below was submitted by the Nevada Women’s Civic League to the US judiciary committee, which was resisting granting women the right to vote nationwide. As the catalogue entry for the map tells us, “this petition shows that women were not just lobbying Congress in general, but strategically pressuring committees to act”.
In the US, the 19th amendment guaranteeing all women the right to vote was ratified in August 1920. But the fight for equal access to the ballot box was far from over.
Racist voter suppression policies were enacted in many states against women of colour, who were themselves creating maps to campaign against the horrors of lynching. It was only after the Voting Rights Act was passed nearly 50 years later, on August 6 1965, that such policies were outlawed. Even today, maps remain a weapon in the continuing fight to achieve fair racial representation in some US states.
In the past, creating maps to counter the status quo – or indeed creating pretty much any map at all – would have required significant design expertise, a lot of manual effort and the financial means to print and promote it.
Today, these challenges can be overcome more easily. The majority of sites and social media platforms are free, do not conform to national borders, and are out of government reach. That means that images that hold those in power to account can spread more freely. So it’s time to use maps to challenge the greatest social and political crisis of our time: the destruction of our planet’s environment.
Take a look at this map of nitrogen dioxide – a gas released into the atmosphere by burning fossil fuels – from a hot July day across Europe in 2019 (click to make it bigger). High levels can damage health, create acid rain and contribute to the greenhouse effect. Although the map shows gas moving around, it’s clearly concentrated in certain areas. There’s a big cloud caused by shipping in Marseille and spots marking industrial plants around Dusseldorf.
Map of nitrogen dioxide concentration
Rather than view this as purely an image of scientific interest, we should see it as a call to action. Living beneath the swirls of nitrogen dioxide are policymakers who can design tougher legislation, such as introducing low emission zones, to erase the yellow marks from this map.
The battle for women’s equality is clearly not over, but the idea that at least half the adult population should be legally deprived of a vote is now unconscionable in all but the most extreme jurisdictions. Maps created for women, by women, helped make this so. Now, let’s unleash the political power of maps to ensure that a failure to act on the environment becomes unconscionable too.