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Erwan Rivault

@erwanrivault.com
6.4K followers 665 following 80 posts

Data visualisation designer at BBC News focusing on satellite data, climate change and cartography | previously at @esa.int | Co-founder of @chartle.cc - A daily chart game

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Erwan Rivault @erwanrivault.com · 10/09/2026
New data released today by Copernicus shows western Europe has just experienced its hottest summer on record, averaging 2.5°C above normal, with parts of France recording summer temperatures up to 4.5°C above average. www.bbc.co.uk/news/article...
Map of summer temperature anomalies across Europe, with parts of France more than 4°C above average. A chart below compares western Europe's summer temperatures since 1979, showing that 2026 was the hottest summer on record, exceeding the previous 2003 record by more than 0.5°C.
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Erwan Rivault @erwanrivault.com · 04/07/2026
Last week's heatwave broke more than 170 June temperature records across the UK, mostly in England and Wales, with some weather stations recording maximum temperatures up to 6C above previous records. Our analysis of the UK and Europe heatwave in 7 maps and charts: www.bbc.co.uk/news/article...
Map of the UK showing weather stations where June temperature records were broken. The stations are marked by triangles; the taller the peak, the bigger the gap between the old record and the new one. More than 170 weather stations broke their previous temperature record, mainly across England and Wales. A few local records were also broken in Scotland and Northern Ireland. The biggest record-breaking margin was Lingwood in Norfolk, which broke its previous June record by 6 degrees Celsius.
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Peter Andringa @peter.andringa.me · 15/04/2026
New FT investigation: Leaked satellite tasking records show Iran used a high-resolution Chinese satellite to surveil US bases last month. as.ft.com/r/ac8726e8-f...
as.ft.com
Iran used Chinese spy satellite to target US bases
Leaked documents show IRGC secretly acquired system and used it to guide strikes during war in March
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Erwan Rivault @erwanrivault.com · 25/03/2026
I love a Sankey diagram that doubles as a map, and today's New York Times example (tracking oil and gas flows through the Strait of Hormuz) is especially brilliant! Reminds a lot of Minard’s famous visualisation of Napoleon’s 1812 Russian campaign of course. (I’ve rotated the NYT one horizontally)
New York Times Sankey diagram of oil and gas flow through the Strait of Hormuz, rotated horizontallyCharles Joseph Minard’s famous Sankey visualisation of Napoleon’s 1812 Russian campaign
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Erwan Rivault @erwanrivault.com · 19/03/2026
Massive 20km long oil spill visible in yesterday's Sentinel-2 satellite image following US strike on Iranian drone carrier Shahid Bagheri near Bandar Abbas.
Satellite image shows 20km long oil spill next to Strait of Hormuz, and a zoom on the Iranian drone carrier that was hit by US strike on 6 March.
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Erwan Rivault @erwanrivault.com · 07/03/2026
We’ve tracked A23a iceberg for a while now, but this is our last story about it! Once the world’s biggest (2x the size of Greater London), it drifted north up to 47ºN where warmer waters and seas broke it into smaller bergs, ending up as the world’s largest pool as melt ponds formed on its surface.
gallery of 9 satellite images from 3 January 2025 to 1 March 2026 showing A23a iceberg becoming smaller and smaller as smaller icebergs break away, and melt ponds appear on the surface.
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Jana Tauschinski @janatausch.bsky.social · 14/02/2026
A special FT magazine issue all about maps is out today, w great pieces by @okr.bsky.social and @theboysmithy.ft.com, plus maps by me on how glacial melt is redrawing Alpine borders, the battle to redraw America and more Read it online here (though best enjoyed in print!) www.ft.com/content/efab...
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PeterMF @petermoorefuller.bsky.social · 05/02/2026
This is fantastic. Engaging people with data through game play. Also has that very Gapminder-ish quality of challenging assumption. Love it!
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Dr Anna Lombardi @annalombardi.bsky.social · 28/01/2026
It's official 🎉 Visualising Climate 2026 is here! visualisingclimate.com First international conference of its kind, it'll bring together artists, scientists, journalists all moved by the same desire to better communicate our changing climate 🌍 🗓️ Join us in Bologna, Nov 4-6 #dataviz #climatecrisis
visualisingclimate.com
Visualising Climate 2026 — Conference
The first global conference dedicated to how data visualisation can transform public understanding of climate change and support informed decision-making.
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Erwan Rivault @erwanrivault.com · 16/01/2026
Scientists have just unveiled the most detailed data yet of the terrain hidden under Antarctica’s ice. We mapped it and compared it to the previously best available data for our story with @markpoynting.bsky.social www.bbc.co.uk/news/article...
Map of Antarctica's elevation beneath the ice. Blue areas indicate land below sea level, and brown areas indicate land above sea level. Large regions, especially in West Antarctica, lie below sea level. The new map reveals with more detail what landscape hides beneath the ice, with some corresponding photographs of similar landscapes in other parts of the world today, such as Alpine mountains, plateaus dissected by deep glacier-carved valleys, and flat plains.Side-by-side maps comparing an older and a newer map of a zoomed area in East Antarctica’s elevation beneath the ice. Both maps use blue to show areas below sea level and brown to show areas above sea level. The newer map shows much finer detail, clearly revealing features such as the Golicyna Subglacial Highlands that are more difficult to distinguish on the older map.
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Copernicus ECMWF @copernicusecmwf.bsky.social · 14/01/2026
The global warming trend continued in 2025. Each of the past 11 years (2015–2025) has been among the 11 warmest on record. Explore more data from #CopernicusClimate in the Global Climate Highlights 2025. #GCH2025 🔗 climate.copernicus.eu/global-clima... @ecmwf.int
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chartle @chartle.cc · 09/01/2026
Which country consumes the most beer per person? Think you can guess it in 5 tries or less? Have a try at chartle.cc
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Erwan Rivault @erwanrivault.com · 05/01/2026
New exciting update to chartle.cc 📈 You can now use the *Explore data* mode after finishing a game to find out what all the other grey lines represent. This has been requested by many of you, thanks for all the feedback! Let us know what you think!
chartle.cc
Chartle - A daily chart game
Guess the country in red by analysing today's chart
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Becky Dale @beckydale.bsky.social · 02/01/2026
New record year for renewable electricity in Britain - thanks especially to strong solar output. Read our analysis of 2025 here www.bbc.co.uk/news/article...
Two part graphic showing the daily contribution of solar in Great Britain’s electricity. The top half is a single tile chart arranged in 30-minute blocks from midnight on left to 23:59 on right with each row representing one day and ordered top-to-bottom from 1 January to 31 December 2025. Blocks are shaded by strength of generation share. In 2025, more than a dozen blocks are dark orange to show share above 40 percent. Contribution in summer days is longer and generally stronger than in winter. The second part of the graphic repeats the format as a small multiple with one fart for each year from 2013 to 2024. Each year increases in strength over that period but 2025 is the greatest contributor overall.
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chartle @chartle.cc · 17/12/2025
Which country holds the world’s largest proven crude oil reserves? Think you can guess it? Have a try at chartle.cc
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Alexandre Médina @a-lex-map.bsky.social · 30/11/2025
#30daymapchallenge · Jour 30 · Relooking 🌍 Europe · Europa · Ευρώπη · Європа 🔍 Zoomez pour découvrir les villes d'Europe dans leur langue. 🔽 L'ancienne carte, en commentaire, utilisait un texte de substitution, réalisée pour le #30daymapchallenge 2024. #cartographie #map #europe #europa
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Evan Peck @peck.phd · 22/11/2025
This has been such a lovely way to start class in my vis course over the past few weeks.
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chartle @chartle.cc · 20/11/2025
Can you guess the country in red just by analysing the chart? Have a try at chartle.cc
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chartle @chartle.cc · 27/10/2025
Can you guess which country suddenly stopped all its nuclear power generation in the early 2010s, and then slowly restarted it? Have a try at chartle.cc
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Erwan Rivault @erwanrivault.com · 23/10/2025
The Israeli military is placing large yellow blocks to delineate the newly established Yellow Line in Gaza - issue is, it’s off by over 500 meters in some areas, shrinking the Palestinian safe area. www.bbc.co.uk/news/article...
Satellite image of north west Gaza shows position of Yellow line and 6 yellow blocks about 500m to the south, showing misalignment.
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Erwan Rivault @erwanrivault.com · 20/10/2025
Do you enjoy playing chartle.cc? We’re opening up to the community! Are you a scientist, journalist, researcher or just a data-enthusiast and would like to submit your own data (it should be a country-based time series)? Get in touch with us - we’d love to feature it!
chartle.cc
Chartle - A daily chart game
Guess the country in red by analysing today's chart
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Ana Lucía González @anlugonz.bsky.social · 16/10/2025
New visual story: Bird migration is one of nature’s greatest spectacles — and scientists are uncovering extraordinary insights into how new threats are reshaping these epic journeys. Follow the remarkable travels of three birds as they fly across the planet. www.theguardian.com/environment/...
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chartle @chartle.cc · 14/10/2025
Can you guess which country went from producing almost 70% of its electricity from coal in the 1980s to just 0.82% in 2024? Think you know? Try it at chartle.cc
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Jake Godin @godin.bsky.social · 13/10/2025
October 11 SkySat imagery from @planet.com shows a column of smoke rising from the Sheikh Ejleen Waste Water Treatment Plant after the IDF withdrew from the base they established at the plant. SkySat imagery from October 7 shows IDF vehicles and temporary structures set up inside the plant.
A SkySat satellite image from Planet Labs showing the Gaza Central Waste Water Treatment Plant Sheikh Ejleen south of Gaza City on October 7 2025. There is a large amount of destruction around the plant and near the plant grounds as well as in the plant itself there are IDF vehicles and temporary structures.A SkySat satellite image from Planet Labs showing the Gaza Central Waste Water Treatment Plant Sheikh Ejleen south of Gaza City on October 7 2025. There is a large amount of destruction around the plant and a column of smoke is rising from the plant grounds. The IDF vehicles and temporary structures are gone.
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Nassos Stylianou @nassosstylianou.bsky.social · 13/10/2025
NEW: How mega batteries are unlocking an energy revolution Massive shipping containers packed with powerful batteries are shoring up grids & extending the use of clean power ig.ft.com/mega-batteri... Latest visual story w/ @samlearner.bsky.social @inari-ta.bsky.social @samjoiner.bsky.social
ig.ft.com
How mega batteries are unlocking an energy revolution
Vast battery units are shoring up grids and extending the use of clean power
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Erwan Rivault @erwanrivault.com · 08/10/2025
Daily Chartle player? We’ve got an update for you 👀 You can now see how everyone else scored when you finish the game (this is today's game). Keep the feedback coming, it’s helping us make chartle.cc better!
Bar chart showing how many guesses players used to find the correct answer on chartle.cc
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chartle @chartle.cc · 30/09/2025
Can you guess which country has the most hospital beds per capita in the world? Have a try by playing at chartle.cc
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Erwan Rivault @erwanrivault.com · 23/09/2025
Starting a 3-month pilot today with the BBC’s brand-new satellite data team! We'll be focusing on using remote sensing data for news stories and longer-term investigations 🛰️ 🌍 Got tips, an upcoming paper or data, or just ideas you'd like to share with us? DM or email me at erwan.rivault@bbc.co.uk
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Erwan Rivault @erwanrivault.com · 19/09/2025
It's been a week since we launched @chartle.cc with @adnaanj.bsky.social and we had an amazing start! - Average of 700 users/day - Record 1.2K users yesterday - From 78 countries - 66% win overall - 2m 18s average engagement Thank you to all who played + shared the game Any feedback, send our way!
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Erwan Rivault @erwanrivault.com · 16/09/2025
A chart-themed game in your datavis dispatch this week! @chartle.cc 📈
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Erwan Rivault @erwanrivault.com · 16/09/2025
Today's chartle game is almost exactly like 📈
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Our World in Data @ourworldindata.org · 15/09/2025
A fun chart game that primarily sources its data from Our World in Data!
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chartle @chartle.cc · 14/09/2025
Which country in the world has the highest share of women in parliament? (and has since 2003..!) Can you solve it? Have a try at chartle.cc
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Erwan Rivault @erwanrivault.com · 12/09/2025
Launch day 🚀 We’ve just released @chartlecc.bsky.social - a daily chart game! Your job is to guess which country is represented by the red line in today's chart. You get 5 tries, no other clues! Play today, come back tomorrow for a different chart with new data and share with your chart friends 📈
chartle.cc
Chartle - A daily chart game
Guess the country in red by analysing today's chart
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Erwan Rivault @erwanrivault.com · 12/07/2025
Parts of the Mediterranean Sea reached 30C this week, much earlier than usual, raising fears for marine life. For some areas, this is 6 or 7C warmer than usual at this time of year. Our story with more maps by @markpoynting.bsky.social and me here: www.bbc.com/news/article...
Map of sea surface temperatures in the Mediterranean Sea showing parts of it reached 30C such as off the coast of Calabria, and the islands of Majorca and Sicily. Below the map is a chart showing daily maximum temperature at a buoy next to Majorca where it reached 30C for the first time this early in the season.
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Erwan Rivault @erwanrivault.com · 28/06/2025
Had an amazing time at #LPS25 this week, where @esaearth.esa.int unveiled the first images from the Biomass satellite. Read our story with @esmestallard.bsky.social and see the stunning new images for yourself:
bbc.co.uk
Beneath the canopy: Pioneering satellite reveals rainforests' hidden worlds - BBC News
First groundbreaking images from the Biomass satellite could change our understanding of rainforests
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Erwan Rivault @erwanrivault.com · 20/06/2025
Excited to be at the Living Planet Symposium #LPS25 next week! I’ll be co-presenting with @janatausch.bsky.social on Thursday afternoon, sharing how we make innovative climate data visualisations in the BBC & FT newsrooms. Let me know if you’re around and want to grab a coffee and chat!
Living Planet Symposium conference promotional poster
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Jules Grandin @julesgrandin.bsky.social · 20/06/2025
Aujourd’hui dans @lesechosfr.bsky.social, un graphique sur le cours du cacao… réalisé en chocolat ! Une photoviz faite dans la journée, pas d’IA, que du kiff
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Mark Bryson @markbryson.bsky.social · 29/05/2025
BBC Verify is hiring for an exciting new role: Senior Infographic Designer in the digital live reporting space - to visualise verification, bring satellite data to life and create everything from charts to complex diagrams. Hybrid working, up to £55k apply by 10 Jun careers.bbc.co.uk/job/London-S...
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Georgina Rannard @georginarannard.bsky.social · 22/05/2025
An intense marine heatwave has developed in the UK and Ireland - with anomalies of 5C found in at least one area. The impacts probably aren't as severe as it would be in summer, but it's a worrying sign of what is likely to happen more often as climate change continues to warm our oceans.
bbc.co.uk
Marine heatwave: UK sea temperatures soar after exceptionally warm Spring
Sea temperatures in some areas off the UK and Ireland are 4C above average.
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Mike Hall @thisismikehall.com · 16/05/2025
🚨 EXCITING NEWS KLAXON 🚨 My first book THE BOROUGHS OF LONDON, based on my London Borough maps series and co-written with the amazing @mattfromlondon.bsky.social, is published by @batsfordbooks.bsky.social in October! 🥳 🛒 UK customers can preorder from: www.batsfordbooks.com/book/the-bor... 1/5 🧵⬇️
Cover art of The Boroughs of London, written by Mike Hall and Matt Brown and published by Batsford
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Erwan Rivault @erwanrivault.com · 07/05/2025
New chart heavy story: As the conclave is about to start, we explored how it became the most global and unpredictable in history, a legacy of Pope Francis
bbc.co.uk
Who are the cardinals choosing the next Pope? - BBC News
Who are the cardinals choosing the next Pope?
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Erwan Rivault @erwanrivault.com · 27/04/2025
We're only in April, but it's already the worst UK wildfire season on record Over 29,200 hectares burnt so far, fuelled by an unusually dry spring, as satellite data shows
bbc.co.uk
Wildfires: UK burnt area for 2025 already beats annual record
The prolonged dry, sunny weather in March and April created ideal conditions for wildfires to spread.
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Chris Jeavans @chrisjeavans.bsky.social · 17/04/2025
BBC Verify investigation by @olgar.bsky.social , me, Olga Malchevska and Matt Murphy into exactly how thousands of homes in Mariupol are being seized and transferred to Russians. Ukrainians can try to get their homes back but there’s a catch… www.bbc.co.uk/news/resourc...
bbc.co.uk
Russia seizing thousands of homes in occupied Mariupol - BBC News
To save their homes, Ukrainians face a dangerous return through Russia, and pressure to take a Russian passport.
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Sanjana Varghese @sanjanamv.bsky.social · 31/03/2025
We found evidence of the IDF setting up watchtowers, creating roads & more within the borders of Syria + Lebanon – with Samuel Granados & Aaron Boxerman www.nytimes.com/interactive/...
nytimes.com
Israel Digs In Beyond Its Northern Border
Israel has built a growing network of outposts and fortifications in Syria and Lebanon, deepening concerns about a protracted occupation in parts of the two countries.
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Dax Kellie @daxkellie.bsky.social · 19/03/2025
This dataviz is absolutely amazing 😍 Global bird species' conservation status displayed as a massive flock! By Andrea Garrec, longlisted for the 2024 Information Is Beautiful Awards www.informationisbeautifulawards.com/showcase/731... #dataviz 📊🌏🧪🐦🦉🦆🦅
What appears to be a massive flock of birds in red, purple and blue colours in a pale blue sky. Each "bird" represents a bird species, and their colour represents their conservation status from the IUCN Red List. Around one third of species appear to be near threatened, endangered or extinct
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Galen Reich @galen.reich.me.uk · 04/03/2025
‪The Bellingcat challenge is back (and set by me this week)! 👉 challenge.bellingcat.com 👈 This week's challenge uses satellite images taken with Landsat 8 - but the colours aren't always 'normal'... 🛰️ Can you complete them? 🔍
A satellite image of an island archipelago. Overlayed white text reads "bellingcat Open Source Challenge".
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Erwan Rivault @erwanrivault.com · 04/03/2025
The world's largest iceberg, A23a, has now run aground in shallow waters about 80km from South Georgia island. I've mapped bathymetry data from @bas.ac.uk in Blender with the iceberg’s latest location to understand how this unfolded. With @georginarannard.bsky.social www.bbc.co.uk/news/article...
Map showing South Georgia island and the bathymetry around it, with overlaid the position of A23a iceberg, grounded on shallow seafloor south west of the island, about 80km away from it.
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Erwan Rivault @erwanrivault.com · 25/02/2025
🚨 New job alert! 🚨 Come join me at the BBC to find stories using satellite data! This is a remote sensing scientist job applied to news, where you'll use machine learning and build tools to analyse satellite imagery for our in-house investigations. Happy to chat or answer any questions!
careers.bbc.co.uk
Senior Data Scientist (Senior Software Engineer), BBC Verify
Senior Data Scientist (Senior Software Engineer), BBC Verify
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