The UK general election is fast approaching. Following the first almost-debate of the would-like-to-be Prime Ministers the battle for the ‘correct’ interpretation of the state of the nation has come into its final stage. Statistics are easy to twist, and there is never an absolute truth in them. In a collaboration with the Office for National Statistics I was involved in the creation of a little interactive visualisation feature that sheds light on some key statistics that show life in the constituencies around the country. Using a conventional map and a hexagon cartogram of the United Kingdom we looked at house prices, income, public sector employment, education, age, migration, and health which can be interactively explored and compared in both map views. The following map is one example from that feature, showing the share of people not born in the United Kingdom:
2014 will be remembered as a year in which two nation-states faced the debate around city-regional configuration within their borders in very different ways. The United Kingdom witnessed a closely fought pro-union outcome in its Scottish independence referendum while, in Catalonia, despite a consultation process showing a huge majority declare their desire for independence, this outcome was not recognised by the Spanish government.
In an article for the “In Focus” section of Political Insight (April 2015, Volume 6, Issue 1) Igor Calzada and I looked at the rapidly changing balance of power between states and their regions.
Make it happen is this year’s theme of International Women’s Day. The day is Internationally the day is celebrated every year on March 8th since 1911 and in 1917 demonstrations in the context of the Women’s Day lead to the outbreak of the Russian Revolution. What had started as a socialist event to recognize women’s economic, political, and social struggles and achievements has now lost this ideological connotation. Today it is rather regarded as an opportunity to raise awareness for the inequality women still experience in all societies.
In some countries the day is still an official holiday, such as in Russia and other former socialist republics, but also in Afghanistan, Angola and Eritrea. In China, Madagascar, Macedonia and Nepal it is a holiday solely for women.
Gender inequality remains a pressing challenge globally and is seen as a major barrier to human development which is why the UN’s Human Development Index (HDI) has a specific indicator to take these problems into account. The Gender Inequality Index (GII) measures gender (in)equity in health, education, work and politics.
The following map shows one indicator from the current GII that highlights the political representation of women in parliaments worldwide measured by the share of seats in parliament (with data for 2013). The map uses an equal-population projection which gives every person on the planet an equal amount of space:
The ocean is the last frontier that has not been discovered by cartogram techniques before. As such, it was an inevitable step in my PhD research some years ago to test the creation of a gridded ocean cartogram, a cartogram that is limited to the extent of the world’s oceans (also linking nicely to my past research on coastal ecosystems).
Chlorophyll concentrations in the world’s oceans are important indicators for the presence of algae and other plant-like organisms that carry out photosynthesis. As such, phytoplankton (which contains the chlorophyll) is an essential element of the food chain in the seas as it provides the food for numerous animals. Variations and changes in the chlorophyll levels are also relevant for the study of the ecology of the sea. Changing chlorophyll levels can indicate changing sea temperatures and other conditions in the oceans that cover about 72 percent of the planet’s surface.
Geographic visualization in social sciences – or draw more maps! Continue reading
There is a long tradition in the emotional relationship between people and forests. We can get an understanding of the extent of the global tree cover from satellite sensors such as NASA’s MODIS
Calculating the average tree cover in an area allows us to estimate the extent of the world’s forests. Forest landscapes can be mapped in various ways and is often done in conventional maps. However, much of the land area is not covered by forest and the few remaining untouched forest landscapes keep shrinking while deforestation continues.
The debate about the relevance and impact of the super-rich on society has gained greater currency as evidence continues to grow that the widening gap between the poor and the rich has a negative impact on societies as a whole. In otherwise affluent countries where the richest one per cent owns the most, child poverty is common, school attainment is lower and medium household incomes are depressed. Along with reduced average living standards, housing is of poorer quality, and health suffers as anxiety rises.
In an article for the “In Focus” section of Political Insight (December 2014, Volume 5, Issue 3) Danny Dorling and I looked beyond the economic, social, educational and medical implications, focussing on the geographical lessons to learn when wealth concentrates. Where the richest of the rich live, work and where they keep their assets is even more imbalanced than the wider and growing underlying inequalities between rich and poor. In societies where the rich have less they tend to be more spread out across a country, but when the wealth of those at the top rises greatly there is a tendency to congregate – with London a prime example.
The 20th session of the Conference of the Parties and the 10th session of the Conference of the Parties serving as the Meeting of the Parties to the Kyoto Protocol is held from 1 to 12 December. For COP 20 / CPM 10 delegates from around the world increased their carbon footprint by heading to Lima, Peru, to hopefully produce more than just hot air. So again it is time to speak about the weather…or climate.
“A population pyramid, also called an age pyramid or age picture diagram, is a graphical illustration that shows the distribution of various age groups in a population (typically that of a country or region of the world), which forms the shape of a pyramid when the population is growing.” (Wikipedia)
This week I joined the Department of Asian Studies at Palacký University Olomouc (Czech Republic) as a visiting lecturer by invitation of the CHINET project. In my lecture about New Geographies of China I built on the work I have presented earlier this year at the Conference on the Socio-Economic Transition of China at the same place, teaching the students not only how China’s position is in the global context of demographic, social and economic change, but also how we can visualise this in novel ways. The following three maps are an extract from my presentation that gave an overview of this lecture.
The maps show the distribution of the different age groups in the country divided into children (age 0 to 14), working age (age 15 to 64) and elderly (above age 64) as they are counted in the official Chinese Census released by the National Bureau of Statistics. As the most recent Census figures have not been released at the same level of detail, the following three maps show the state of 2000. Here is an animated version of the three maps showing all three groups one after another (the individual maps are displayed below):
In an article for the “In Focus” section of Political Insight (December 2013, Volume 4, Issue 3) Jan Fichtner of the University of Frankfurt a.M. and I analysed the size of the foreign assets in the world’s largest offshore financial centres. All ‘offshore financial centres’ (OFCs) have one characteristic feature in common; they offer very low tax rates and lax regulations to non-residents with the aim to attract foreign financial assets. OFCs essentially undercut ‘onshore’ jurisdictions at their expense. The main beneficiaries are high-net-worth individuals and large multinational corporations that have the capital and expertise required to utilise OFCs. Beyond its geographical connotation the phenomenon of ‘offshore’ represents a withdrawal of public regulation and control, primarily over finance. Some important OFCs are in fact located ‘onshore’, e.g. Delaware in the USA and the City of London in the UK. However, historically many OFCs have literally developed ‘off-shore’, mostly on small islands.
OFCs as defined by Zoromé (2007) are jurisdictions that provide financial services to non-residents on a scale that is excessive compared to the size and the financing of their domestic economies. The graphic shows combined data on securities (Coordinated Portfolio Investment Survey by the IMF) and on deposits/loans (Locational Banking Statistics by the BIS) at the end of 2011. Capturing the two by far most important components of financial centres allows a reasonable approximation of the real size of OFCs while avoiding double counting. The larger the size of the circles on the map, the more foreign financial assets have been attracted to the particular jurisdiction. The vast majority of the almost US$70 trillion foreign financial assets are concentrated in North America, Europe and Japan. Areas with assets below $US50bn are not shown for their relative insignificance in the global context.
“A mappa mundi […] is any medieval European map of the world. […] To modern eyes, mappae mundi can look superficially primitive and inaccurate. However, mappae mundi were never meant to be used as navigational charts and they make no pretence of showing the relative areas of land and water. Rather, mappae mundi were schematic and were meant to illustrate different principles. The simplest mappae mundi were diagrams meant to preserve and illustrate classical learning easily. The zonal maps should be viewed as a kind of teaching aid—easily reproduced and designed to reinforce the idea of the Earth’s sphericity and climate zones” (cited from Wikipedia).
What would a mappa mundi of our times look like? A modern equivalent of such a map would have to focus on those spaces of our planet that we have a less vivid imagination of than the physical shape of the world that in medieval times was a much less familiar view than it is today. The following gridded population cartogram generated over the whole surface of Earth could be such a contemporary depiction of the world. It divides the world into equal spaces of population realigning the map view to show the human planet in a similar way as mappae mundi showed the world centuries ago:
In the face of unprecendented occurences of extreme weather, loss of species, and pollution, it is clear that climate change is affecting our planet. We cannot afford to wait any longer to act. This quote from the Earth Day 2013 website outlines the theme for this year’s Earth Day campaign which runs under the motto Climate change has many faces.
As the Earth Day campaign points out, the stories of the impact of climate change are extremely diverse: “A man in the Maldives worried about relocating his family as sea levels rise, a farmer in Kansas struggling to make ends meet as prolonged drought ravages the crops, a fisherman on the Niger River whose nets often come up empty, a child in New Jersey who lost her home to a super-storm, a woman in Bangladesh who can’t get fresh water due to more frequent flooding and cyclones.”
All these tales have one thing in common: They are a story of our impact on planet Earth, but equally of the impact of a changing planet on human’s lives. Our species has become one that is not just living in the natural environment, but is one factor that changes the environment to a level that no other species did before. This is happening to an extent that geologists discuss whether this can be seen as a new geologic era. Nobel Prize laureate Paul Crutzen started promoting the idea of the so-called Anthropocene, a concept that has now left the scientific world and is increasingly entering the public debate regarding issues of global sustainability and humanity’s impact. Anthropocene.info is a project initiated by the International Geosphere-Biosphere Programme (IGBP) that aims to “to help visualize and better understand humanity’s geographic imprint in recent time.” Not only is it important to find better ways of understanding the complex interrelations of humans and their natural environment, to which visualisation can contribute, but also is it important to create a public understanding of issues relating to the challenges connected to global change.
Here is one example of a more challenging view existing knowledge that demonstrates how changing the view can make us rethink the way our natural environment is shaped. According to research by the US National Office of Oceanic and Atmospheric Research, “[t]he strongest hurricanes in the present climate may be upstaged by even more intense hurricanes over the next century as the earth’s climate is warmed by increasing levels of greenhouse gases in the atmosphere. Most hurricanes do not reach their maximum potential intensity before weakening over land or cooler ocean regions. However, those storms that do approach their upper-limit intensity are expected to be slightly stronger in the warmer climate due to the higher sea surface temperatures.”
This is relevant due to the impact of more frequent flooding and cyclones on humans mentioned earlier. So where are these spaces where this is relevant. We know from historic records where there are tropical storm tracks, and the emerging pattern on a normal world map may be familiar to some of us (see here). But what if we change the perspective and focus on the actual areas that have the highest density of tropical storm occurrences. Using the records from 1945 to 2008, this intensity can be turned into quantities which are suitable for visualisation using the gridded cartogram technique. The following map shows a gridded cartogram of tropical storm intensity visualised over land based on a 0.25 degree grid. The larger a grid cell, the more tropical storm activity has there been over the past >60 years, indicating where the most affected areas of tropical cyclones (with a sustained wind speed of ver 40 mp/h) has been and how the climate patterns shape the world in a highly relevant issue of the Anthropocene:
In 2007 nature conservation organisation WWF initiated a campaign “encouraging households and businesses to turn off their non-essential lights for one hour to raise awareness about the need to take action on climate change” (Wikipedia). The campaign is called Earth Hour and always takes place at the end of March – this year on Saturday, the 23rd.
The Earth Hour campaign has motto of “uniting the world to protect the planet”, although certainly not everyone will join in switching off their lights at 8.30 pm to unite each time zone with a dark night sky (and there is criticism of campaigns like this). But the wealthier parts of the world will be the main focus, as large parts of the poor world live in relative darkness at night anyway. NASA’s composite satellite image of the world at night (as featured on this website before) that gives us an indication of where light pollution affects most of the night skies has just received an update recently. Earth at Night 2012 was published by the NASA Earth Observatory last December, promising nothing less that “It’s the end of the night as you know it; you’ll see fine.” The resolution and level of detail revealed in the data is stunning, so that I reworked my version of the Earth at Night in an equal population projection using a gridded cartogram transformation. The new gridded population cartogram of the Earth at Night gives an equally stunning insight into how human activity relates to the distribution of light at night, showing the already highlighted inequalities that became apparent in the old version of the map in even greater detail where large parts of the populations in Africa and also in some parts of Asia live in the shadows of the wasteful brightness of the wealthy world. The Earth at Night as seen by humanity – an image of an unequal world:
In the year 2000 there were approximately 15 million square km of cropland and 28 million square km of pasture which are represented in the two main maps. These are equal to 12% respectively 22% of the ice-free land surface. This is according to estimates of a study on the geographic distribution of global agricultural lands by Ramankutty et al (published in Global Biogeochemical Cycles, 2008) who used a methodology of combining agricultural inventory data and satellite-derived land cover data to come to these figures (data can be accessed via Columbia University’s SEDAC). Continue reading
Map projections are a crucial issue for the worldmapper project because the maps (respectively cartograms) are basically some sort of reprojection of the world, although in a different way than the usual projections used in cartography. Rather than trying to solve the conflicts of distortion when drawing a three dimensional surface on to a two dimensional area (be it a screen or a paper map), the worldmapper cartograms distort our image of the world on purpose and show each country in proportion to a specific topic.
“England is increasingly divided between the rich and the poor, with a 60% increase in poor households and a 33% increase in wealthy households. This has come at a time – 1980 to 2010 – when the number of middle-income households went down by 27%.” In a Londonmapper report that was featured in today’s Observer newspaper we showed how the groups of poor and wealthy and the remaining ‘middle’ have changed in England over the past three decades.
These two charts, showing the absolute and relative changes in the number of households in each group, highlight that poor and middle households have come to being almost equally large groups in the British capital in the period, with a clear trend in growing numbers of poor and wealthy households and a shrinking middle part. These polarising trends of growing inequality are not only prevalent in London, but also continue in the rest of the country. The following cartogram visualisation uses the absolute changes between 1980 and 2010 and shows how the increase in poverty and wealth compares across the regions of England and the Borough of London and looks at the decline in the middle in the same way. How the middle is squeezed out of London becomes particularly apparent in these images, as London dominates much of the map while growing numbers of poor and wealthy households are more evenly distributed across the country:
House price monopoly would be a better name for what has turned into a defining political issue ahead of the 2015 general election. As the ONS states in its latest release of long-term housing sales data, “the average price of sold houses in England and Wales has more than doubled since 1995” and “nearly a million properties were sold in 2013.” The dynamics of the housing market is about more than people looking for a place to live. It has become a substantial part of the British economy.
The following cartogram animation puts this trend into a vivid perspective. It shows the absolute value of all housing stock sold in a year for the regions of England as well as the boroughs of London, which itself becomes ever more dominant over the past two decades. Only in economic weaker times it loses some of its pace compared to the rest of England, but stays way ahead of any other region. The animation also takes the absolute value displayed in each map into account by resizing England according to the total value represented in each map, so that the full cartogram itself grows (and shrinks after the crash in 2008) over time: