
Post-doc researcher @digigeolab @helsinkiuni. #GIScience #urban #geography #multilingualism. I like #linux #discgolf #longboarding #barefootshoes #metal.
Helsinki, Finland
Joined November 2014
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Our NUTS 2 urban-rural #typology paper is out now! 🚨
We use the European 1-km grid population census and urban agglomeration data to match regional data availability and policy relevance with an available typology.
📜 Article and data: doi.org/10.18335/region.v13i…
#research #EU
Tuomas Väisänen 📼 🇺🇦 vis.social/@waeiski retweeted
Those of you who don't know what authoritarianism looks like...this is it. All the gaslighting about previous presidents "what about...!!! Is bullshit. I've been talking about the slide towards NOW for 30+ years. Those earlier concerns were nothing. Now we are HERE.
Tuomas Väisänen 📼 🇺🇦 vis.social/@waeiski retweeted
🚨🌍 NEW ARTICLE 🌍🚨
We geocoded the #mobility of over 2 million #Erasmus students across #Europe from 2014 to 2022 with @MiladMzdh @polarboe @OlleJarv and published the results as #OpenData in @ScientificData.
doi.org/10.1038/s41597-025-0…
@digigeolab @MobiTwinProject #OpenScience
🚨🌍 NEW ARTICLE 🌍🚨
We geocoded the #mobility of over 2 million #Erasmus students across #Europe from 2014 to 2022 with @MiladMzdh @polarboe @OlleJarv and published the results as #OpenData in @ScientificData.
doi.org/10.1038/s41597-025-0…
@digigeolab @MobiTwinProject #OpenScience
To support using this data, we have also developed an #EdgeBundling tool to aid in visualising complex origin-destination flow data:
doi.org/10.5281/zenodo.14532…
We also provide a ready-made edge-bundled network on NUTS 2 level lead by @polarboe:
doi.org/10.5281/zenodo.14380…
The full student mobility data and Python scripts used to produce the data are openly available in our #Zenodo:
zenodo.org/records/14332354
Read more in our blog post: bit.ly/3FZ7qkL
#OpenScience #OpenResearch #OpenAccess #Python #Zenodo #EuropeanUnion #Eurostat
Tuomas Väisänen 📼 🇺🇦 vis.social/@waeiski retweeted
Russian shadow fleet not just allows Russia to earn money for its war on Ukraine but is also an environmental catastrophe waiting to happen.
In a September video by Yle. fi, experts explain that about 70% of the tankers used in the Russian shadow fleet are at least 15 years old. They do not go through proper servicing which increases the risk of technical issues and malfunctions. A lot of these vessels have been blacklisted in the first place because their condition is so bad (meaning they are not allowed to sail) but they still continue voyaging through the Gulf of Finland, for example. Many of them sail under the jurisdictions of different countries, which makes them harder to track.
The risk of an oil spill is getting more and more likely - and the shadow vessels carry tens of thousands tons of oil. The environmental disaster that would follow would have an unprecedented scale. It will affect all forms of wildlife and sea life, destroy the business of fishermen and coastal tourism for years, if not decades.
Its aftermath for the environment would be indescribable, and the costs to mitigate such a disaster will be exorbitant. Since Russian shadow fleet tankers mostly don't have proper insurance, there is very little chance that any payments will follow that will cover the costs. These expenses will have to be borne by the country/countries near which this will happen, combined with future economic losses caused by damage to the environment.
Moreover, Russian shadow fleet tankers are an extra burden for the coast guards as they have to check more vessels (again, many of them are in very poor condition) and have extra training, working on scenarios of possible environmental disasters.
According to experts quoted by Yle. fi, from January 2022 to August 2024, 380 million tons of Russian oil and other petroleum products went through the Gulf of Finland, earning Russia more than $220 billion for the war in Ukraine.
It is obvious at this point that tackling Russian shadow fleet and cutting off or substantially decreasing Russian oil profits is a top priority towards ending the war and ensuring lasting peace. However, as with almost everything in this war, stopping Russia is also very important for the environment - globally and locally. Currently, this fleet is a ticking bomb that can explode tens of thousand of oil into water at any moment.
Tuomas Väisänen 📼 🇺🇦 vis.social/@waeiski retweeted
Two years ago on this day.
R.I.P. Oleksandr Matsiyevsky, the Hero of Ukraine.
Tuomas Väisänen 📼 🇺🇦 vis.social/@waeiski retweeted
In the case of Chinese ship cutting cables between NATO states - thats exactly why we have politics - the option of economic sanctions when the legal options are not possible.
But we - in this case EU national leaders - decide to do nothing again.
We are letting Russia-China axis to do free target practise over NATO critical infrastructure in real time, so once they want to really attack, they will have it well trained.
Tuomas Väisänen 📼 🇺🇦 vis.social/@waeiski retweeted
All I want for Christmas is for people in the West to understand that they will eventually run out of countries to appease genocidal, warmongering dictators with.
Tuomas Väisänen 📼 🇺🇦 vis.social/@waeiski retweeted
Keinovaloa on Suomessa vuosi vuodelta enemmän. Monella paikkakunnalla valosaaste on tuplaantunut kymmenessä vuodessa. Katuvaloja on vaihdettu energiatehokkaisiin led-lamppuihin, mutta samalla yhä suurempi osa niiden valosta on levinnyt ympäristöön. yle.fi/a/74-20128635
Tuomas Väisänen 📼 🇺🇦 vis.social/@waeiski retweeted
I’m honored to receive the visiting professor’s scholarship @unitartu for the next academic year 🤩
The plan? To focus on cross-border mobilities, border regions, transnationalism, multilocality and segregation in research & teaching. Stay tuned! 😉
ut.ee/en/content/university-…
Tuomas Väisänen 📼 🇺🇦 vis.social/@waeiski retweeted
#Tbilisi Now
Tuomas Väisänen 📼 🇺🇦 vis.social/@waeiski retweeted
Today marks the 85th anniversary of the start of the Winter War, when the Soviet Union attacked Finland without a declaration of war.
Defending Finland’s independence came at a heavy cost: we retained our independence, but more than 25,000 Finns lost their lives.
📷 SA-kuva












