Author Archives: FloodSkinner

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About FloodSkinner

I am a geoscience researcher, educator, and content creator specialising in water, computer models, and games.

My journey as a trustee - challenges and insights

My Journey as a Trustee: Insights and Challenges

As I write this, it is currently Trustees Week in the UK – 6th to the 10th of November 2023. Trustees are at the heart of all charities. They are a special type of volunteer who provide leadership to the charity, making sure it fulfils its (legal) purpose and ensuring its volunteers and members have the support they need. This role is called governance.

To date, I have over five years of experience serving as a trustee for different charities. These roles are among the most rewarding things I have done in my career. They also provided me experiences of leadership, collaboration, and communication when I was an early-career researcher, and these have equipped me well for the challenges of my career. I have found new colleagues, new collaborations, and friends for life.

In 2015, I started volunteering as the Press Officer for the British Society for Geomorphology (BSG). This was a non-trustee position, helping the sub-committee for Outreach and Education by maintaining the Society’s social media channels and dealing with press enquiries. I was just two years out from my PhD at this point and it was good exposure to the world of professional societies, which are often small charities. I also had the opportunity to do some exciting things, like supporting a BSG exhibit at Cheltenham Science Festival with my Humber in a Box virtual reality experience.

In 2018, I stood for election for Vice-Chair of the Outreach and Education sub-committee of the BSG, to succeed my friend Annie Ockelford (difficult shoes to fill). This was a trustee position and I was elected by the BSG’s membership for a three-year term. For those three years I ran the sub-committee alongside another trustee, firstly Louise Slater and followed by Hannah Williams. The Outreach and Education sub-committee existed to promote geomorphology, careers in it, and its value to society to the public and all levels of education. Some of the core tasks were:

  • Maintaining relationships with partner organisations, including the Royal Geographical Society and the Geographical Association.
  • Issuing outreach grant awards to members.
  • Judging the Marjorie Sweeting Award for best undergraduate dissertation in geomorphology.

Much of my time in this role was affected by the Covid pandemic and resultant lockdowns. But problems present opportunities. The lack of travel saved the Society a lot of money and it needed to spend it (the Charity Commission does not like you building up excessive reserves), so I designed and ran a grant award for digital outreach and educational tools. From my own experience, outreach and science communication grants are usually small (often < £1k) and this means you can not achieve a lot. I was keen to provide something with a bigger budget and see what could be achieved. This enabled us to fund some amazing projects and create some amazing tools for geomorphologists to use:

  • Steddfod Amgen 2021 Virtual Field trips (example).
  • New developments of Virtual Glaciers (video).
  • Tayside through Time (video).
  • Coastal Explorers (video).

The Digital Resource Series was rounded off with a knowledge sharing workshop, with expert contributions from Bethan Davies, Leah Forsythe, and Chloe Leach. These recorded presentations are still freely available to anyone and I look back with pride at the knowledge we were able to capture and share through this grant call. Check out the videos, they are inspiring.

It was also in this role that I developed a love for video editing. Steve Brace, the representative from the Royal Geographical Society supporting our sub-committee, suggested making some videos introducing some of the great debates in geomorphology. These were to act as provocations to be used by teachers, showing that there are open questions in geomorphology – things we don’t understand. With the support of the membership, I started these videos and made two episodes. I enjoyed this a lot and I see this as the moment that started my journey to the Floodology YouTube channel. The events of summer 2020 led to society engaging with more important debates and I did not feel it was appropriate to continue the series then. Sadly, I did not get chance to revisit it.

In September 2021, at the end of my three-year term, I left my role as Trustee of the BSG. I did so with great memories and am pleased with what we had achieved in that time. Earlier in 2021, I had also left academia to join the Environment Agency as a Senior Advisor in Hydrology. This marked a shift in my professional focus from the mud and rocks in rivers, to the water in (and especially out) of them. I successfully stood for election as a Trustee of the British Hydrological Society (BHS) and the week after my role ended at the BSG, my new role began at the BHS.

The BHS is organised differently to the BSG and instead of having a defined role I joined as one of a group of seven ‘ordinary members’. The ordinary members are all elected Trustees, serving for three years, and each contributing to several of the sub-committees. I have had roles in the Communications and Publications and the Equality, Diversity and Inclusion sub-committees.

At this time, my wife had been helping a group apply for charitable status and had been researching charity governance in detail. This proved useful as I took in a lot of this information in by osmosis and volunteered to perform a review of the BHS’ governance following guidance from the Charity Commission. If you wish to do a similar task, I recommend the following resources:

  • Charity Commission’s Essential Trustee guidance (webpage).
  • Charity Governance Code and checklist (website).
  • The Charity Trustee’s Handbook (webpage).

Following my review, I made several recommendations that are currently being implemented by the board of trustees. This includes changing the BHS’s charitable status, creating new policy documents and codes of conduct, and restructuring the Society’s governance and volunteering set up.

On this last point, my recommendations drew strongly on my experience at the BSG and what I saw that worked well there. I consider myself a disorganised person (undiagnosed ADHD) but I also strongly believe that organisation and structure is immensely freeing and can inspire creativity (there’s a reason the blank page is the hardest place to start writing from). By giving each ordinary member a defined role, leading just one sub-committee, and supported by new non-trustee volunteers, I hope we will be able to achieve more and be more reflexive to challenges and opportunities.

My trustee role in the BHS will be as Chair of the Communications and Publications sub-committee and our key tasks will be:

  • Producing the quarterly editions of Circulation magazine.
  • Maintaining and growing the BHS social media channels.
  • Maintaining the BHS website.

But our remit does not end there. With new volunteers joining there will be new voices, fresh energy, and innovative ideas to deliver more for the benefit of the charity, for hydrology as a discipline, and for the members.

In September 2024 my term at the BHS will end. I plan to take a break from volunteering after six years at that point to focus on new things – I’d like to put more time and energy into new ventures like the FloodSkinner brand and other projects currently in development. However, I know my trustee story is not over yet and I will be back volunteering in the future when the time is right.

Being a trustee is a serious role. You take on a legal role with responsibilities and even risks. But it is highly rewarding and places you in a position where you can affect real change. It is a unique opportunity to contribute based on your skills, experiences, and drive. It is a role where you can make it what you want – just supporting the charity tick over in its day-to-day function is extremely valuable and there are always opportunities to do more.

If you’d like to know more about being a trustee, especially if you’d like my role from September 2024, please do reach out.

Exploring Slovenia: A hydrology lecture experience

Exploring Slovenia: A Hydrology Lecture Experience

Slovenia, and its capital, Ljubljana, are beautiful. Just stunning. I just want to get that out of the way straight off! Just look at this panorama of Lake Bled to give you some idea.

I travelled there because I was invited to lecture on communicating hydrology as part of the HydRoData summer school at the University of Ljubljana. The summer school was jointly organised by the university and the UNESCO Chair on Water-related Disaster Risk Reduction.

Students on the course learnt valuable skills on collecting, managing, and processing hydrological data, including fieldwork and coding using R. My lecture fell in the middle of the week-long programme, on September 6th.

The run-in to the lecture was not ideal. I lost most of August to an awful bout of Covid (definitely not a cold!). I don’t fly so was travelling by rail and, whilst travelling out, our return leg via Milan got cancelled due a landslide blocking all routes between Italy and France. We had to quickly book a new route via Munich*.

However, I put a lot of work into my lecture and I am proud of the content I shared with the students. Titled “Hydrology. Sci-comm. Games”, I took the students through the importance of being able to effectively communicate hydrology. I drew on my backgrounds in both research and operational hydrology to discuss specific issues around that research-practice nexus.

Me presenting at the HydRoData summer school. Picture by Nasrin Attal.

I shared some tips on constructing effective storytelling and how they can use their own passions to help engage people with their research and projects. I structured the lecture around the six key attributes, or qualities, I believe society needs from hydrologists**. These are:

  • Knowledgeable
  • Technical
  • Practical
  • Playful
  • Sharing
  • Collaborative

You will be hearing a lot more from regarding these six qualities as I plan to create a set of resources around them. I’m sure they’ll feature on my Floodology channel in the near-future too.

If you’d like me to share this lecture with your students or group, please do get in touch. In the meantime, here is some my awful photography that does not do Slovenia justice.

Chris

*This too was disrupted when a broken powerline closed all of Munich station. We ended up waiting nearly 6 hours for a FlixBus in a bleak car park outside Salzburg…

**Or any scientist really.

Why Doom messages matter for climate action

Why Doom Messages Matter in Climate Action

Spoiler alert: This blog contains spoilers for the following films and programmes – Don’t Look Up, The War Game, Threads, The Day After, and a single episode of BBC’s Panorama from 1980. If you want to watch any of these and for them to be a surprise then stop reading now.

Trigger warning: This blog contains discussions of climate change and nuclear war. The consequences of both are dire and can justifiably cause anxiety. Nuclear weapons and nuclear war are indescribably horrendous and you might not want to have another thing to worry about at the moment.

The echo-chamber of my Twitter feed was buzzing over the holiday period for the Netflix film, Don’t Look Up. The film, described by those involved as a satire, follows a pair of scientists after they discover a comet heading for Earth. They try, and fail, to convince the world to take them seriously. They come up against a media that is obsessed with celebrity and politicians that are only bothered about their next election, even when the fate of human civilisation is at stake. Through apathy, selfishness, misinformation, and distraction the world (well, the US) misses all its opportunities to act and the comet hits the Earth and presumably wipes out all humans on it. It’s a comedy but not a feel good one.

Trailer for Don’t Look Up

Although the plot is about society’s response, or lack of, to a very real threat in the form of a comet, the film is really a deliberate allegory for our lack of a serious response to climate change. Some of the criticism I have seen of the film (there’s been a lot along with a lot of praise) is that it is a message of doom – it ends in failure and suggests that we do not have a capacity as a species to take hold of the solutions that are in reach. The reason for this criticism is a belief that to restrict climate change we need the majority of the public to take meaningful actions and for that they need hope. Messages of doom have been shown that they can raise awareness but actually make it less likely that people will do anything about it (Link).

A counter-argument to this is often that it should not be up to individual members of the public to bear the burden of climate action. Some go further and claim that campaigns and tools based around the concept of an individual’s ‘carbon footprint’ are actually a distraction campaign, placing the focus and blame on the individual consumer and not on the fossil fuel companies profiting from their pollution, and the politicians who enable, subsidise, and fail to curb them. They would argue that messages of doom actually focus attention on those who are most to blame and also have the ability to solve it. They would say they are speaking truth to power.

Doom-laden communications during the Cold War

Now, let me take you back to the last century (millennium even) and the era of the Cold War. My earliest memory of it was Timmy Mallett giving away fragments of the freshly demolished Berlin Wall as prizes on his morning kids TV show. I did most of my growing up in the post-Cold War world where the spectre of global thermonuclear war seemed to be something, thankfully, consigned to the past. I think it is difficult for people of my generation and those younger to really appreciate what it was like to live during this time and the very real fear of nuclear war.

With my interest in how risks are communicated, I have become fascinated in the information provided to the public about nuclear war and comparing them to messaging on climate change or flood risk. Below is a summary of some of the films I have been watching – before you continue, I would refer you back to the trigger warning at the start of this blog and consider if you wish to continue.

I started a few months ago with The War Game. Not to be confused with War Games (one of my favourite films), this 1966 black & white film is a dramatised documentary that tried to describe the likely aftermath of nuclear war on the British public. It was initially decided to be too horrific to be screened by the BBC and was only first shown on TV in 1985 (Link). It portrays the panic before the nuclear exchange and the near complete breakdown of society after, where law is enforced by firing squad and food becomes the only currency of value. It has been a few months since I watched this one but the bit that stayed with the most were the interviews with children a few years after the an attack – they are asked what they wanted to be when they were older. They universally replied “I don’t want to be anything”. It was simply the death of hope and the loss of the future.

A clip from The War Game showing the moment of nuclear attack

The second film I watched was a drama called The Day After. Made in 1983 and set in Kansas, it follows people going about their day to day lives (including a hospital doctor and a young couple getting ready to be married) as an international incident develops and is communicated via newspaper headlines and snatched messages from breaking news broadcasts. It famously does not reveal who launched first but does show the launches of US ‘Minuteman’ Intercontinental Ballistic Missiles (ICBMs) from sites around Kansas. After the first launches there’s a poignant shot of a white horse bolting – there was no way of putting them back now – and the crowd at a College football game watching them launch – “It will take thirty minutes for them to reach Russia,” “That means it will be thirty minutes before theirs reach here”. The aftermath shown is similar to The War Game, dealing with themes of societal break down, struggle for food, and radiation sickness. The doctor struggles to deal with the sick, including the overwhelming number of burn victims in a hospital where all electrical equipment has been rendered useless by an Electromagentic Pulse (EMP).

Trailer for The Day After

Threads is the film that impacted me the most and left me feeling nuclear anxiety. Made in 1986, it is set in Sheffield and follows a similar pattern to The Day After. We follow people just living their lives as the relations between NATO and the Soviet Union deteriorate in the background – none of the characters are involved in the situation, they have no agency in it, and many show little interest until they are forced to.  The nuclear exchange begins with the detonation of a large yield warhead over the North Sea, the resulting EMP knocking out electronics and communications across Europe. Military targets outside of Sheffield are then hit before a direct attack on the city itself targeting the steel works. Most people are unprepared but some have hastily constructed shelters and manage to survive the blast, sitting in their ruined homes under upturned doors and binbags of dirt until the radioactive fallout has ended and radiation levels have lowered to an immediately survivable level.  The title of the film refers to the ‘threads’ of community that hold society together and which rapidly unravel after the attack. The second half of the film shows this, much like in the other two films, yet goes further by showing the potential effects of nuclear winter, something we only really began to understand in the mid-1980s.

Trailer for Threads

The firestorms that would follow a large nuclear exchange would force huge quantities of dust and soot from destroyed cities into the atmosphere. This would block out the light and heat from the Sun, an effect that some modelling has shown could last for over a decade and dramatically lower global average temperatures and rainfall (Link). Even a much smaller exchange between India and Pakistan could have profound impacts on global climate and could entirely deplete the Ozone layer globally, exposing the planet to harmful ultraviolet rays (Link). In Threads this is shown by people having to work the land by hand (all machinery either destroyed by the EMP or lacking fuel) with faces and bodies wrapped in rags to shield from the sun. Harvests are poor, if any at all.

What is universal about all three films is that are utterly devoid of any form of hope. They are as doom-laden as they could possibly be – even if you were to survive, the aftermath is so horrific you’d be pressed to consider yourself lucky.

The final film I watched had a different take. It was an episode of the Panorama programme from 1980, featuring an exceptionally young looking Jeremy Paxman, that was critical of the UK’s plans to prepare for a nuclear attack. Its opening argument was that at that time the nation was so unprepared that more than 70% of the population would die, yet with a credible national plan and some personal resilience actions more than 70% could survive – it highlighted the dramatic mis-match between the nation’s spending on nuclear weapons and the funds it provided preparing the civil defence in case it happened. However, plans to prepare members of the public at the time consisted of distributing the “Protect and Survive” pamphlet to households and even then it was unlikely these could even be printed in time. The same Protect and Survive messaging would also have been distributed via radio and TV. The messages provided information on the dangers from nuclear attack, the alert signals that would be used, and how to prepare a fallout shelter for your household.

Original recording of the 1980 episode of Panorama – If the bomb drops

However, as explored in the three dramatised films and where the Panorama episode is particularly critical, any attempt to prepare yourself was entirely futile if there was not a Government plan to ensure those ‘threads’ of society were maintained in the aftermath. In the 1980s there was a plan of sorts, with the country being divided into sections with each run from a nuclear bunker staffed by the equivalent of a local resilience forum, with the head of the local council having supreme command. As shown in Threads, when the situation arises individuals might prefer to stay with their families rather than being stuck in a bunker totally oblivious to their fate. In the programme, Eric Alley from the Institute of Civil Defence was rather scathing of the nation’s preparedness – “At the moment we’re back to the British system of ad hockery, of hoping for the best… we can’t muddle through how we have muddled through in the past”.

Threads itself was inspired by the Panorama episode, featuring in it snippets from the Protect and Survive videos and shows people following some of the personal resilience actions like the homemade fallout shelters. It was being critical of the Government’s plans to deal with the aftermath of a nuclear attack but also critical of the very notion of telling people they could survive it or even that surviving it would be preferable to perishing in the initial blast. It was considered that promoting the idea that the UK could survive a nuclear war (the closest you can get to winning one) – providing hope in this grimmest of situations – was actually dangerous and might encourage Government to pursue that course of action. It prompted anti-nuclear protestors to produce the “Protest and Survive” pamphlet as a response – better to convince governments to get rid of these weapons altogether than trying to survive on tins of beans, surrounded by bags of dirt, whilst radioactive dust rains down around the ruins of your home.

Perils of doom-laden messages for climate change

Despite it clearly being preferable that we do what we can to stop it altogether, climate change is not as immediate or binary as a nuclear war would be, but it could be just as terminal. Individuals do have genuine agency in reducing the impacts of climate change and we need those messages of hope to inspire these. Yet, over-emphasis on individual actions risks leading governments into complacency and inaction – the impact of those individual changes will be relatively small compared to what could be achieved through strong and collaborative action by the world’s governments. To inspire this action we may need the messages of doom from films like Don’t Look up – it was rumoured that US President Reagan claimed The Day After had an influence on him signing the Intermediate-Range Nuclear Forces Treaty with Soviet leader Gorbachev after all (Link).

The big difference though is that climate change is not just introducing new hazards into the world, it is making existing ones worse. An example close to home for me is tidal flooding in Hull. This is a very real threat to the city, sadly demonstrated by the 2013 storm surge. It is crucial that people living in areas at risk are made aware of the risks they face but also feel empowered to take actions that would help them. Sea level rises of up to 1.2m by the end of the century will increase this risk a lot. Doom-laden messages are used about Hull claiming that this will plunge the city “underwater”, to make people aware of climate change to inspire them to put pressure of authorities to tackle it but this is problematic for two reasons. First, it is an exaggeration of predicted impacts and whether using hope or doom, you should always be honest. Second, by causing fear of future flooding it disengages people from present dangers, increasing their risks. You can read more in my old blog post here.

To summarise, there is a place and also a real need for the doom-laden messages to help us address climate change but they are a double-edged sword that must be wielded carefully and sparingly. Unlike nuclear war, individuals can make a real difference to limit the impacts. Also, a groundswell of grassroots action has the potential to lead companies and governments into positive changes. The majority of messaging should be hopeful, focusing on the solutions that already exist, whilst acknowledging that the burden of action should not lay with individuals.

Climate change, as Joshua discovers about Global Thermonuclear War in War Games, is “a strange game. The only winning move is not to play”.

Additional comments:

I am writing this whilst watching news reports of a Russian military build-up on the borders of Ukraine, with the Bulletin of Atomic Scientists keeping the Doomsday Clock at 100 seconds to midnight, the closest it has ever been. In recent years Russia has been rapidly modernising its nuclear arsenal including the development of hypersonic missiles that are able to evade modern missile defence systems. Russia has also been rumoured to have adopted an “escalate to de-escalate” approach that theorises that they could ‘win’ a small scale nuclear exchange and force their opponent to the negotiating table (Link).

Russia isn’t the only nation modernising its nuclear arsenals. The UK is refreshing the Trident nuclear deterrent but increasing the number of warheads at the same time (Link). It is considering adding scenarios to the reasons to justify a retaliation using nuclear weapons, including a wide-spread cyber-attack on the country (Link).

The risk of nuclear war is much lower than in the Cold War. The risk of nuclear war is not even considered as part of the UK’s National Risk Register, but then again neither is climate change…

Needless to say, these views are entirely my own and are not intended to represent the views of my employer.

Environmental themes at the Prague Quadrennial

Environmental Themes at the Prague Quadrennial

I realised this week that is has been two years to the day since Amy and I set out on our adventure by train to Prague. It is one my favourite experiences and I can’t quite believe it was whole two years ago now. The memory is even more prominent in my mind because the thought of such a journey right now, still in the midst of the pandemic, seems so alien now. Below, I revisit a blog post I wrote, originally for the SeriousGeoGames website, about it.

The Prague Quadrennial of Scenography and Design is a conference for theatre makers, unsurprisingly held in Prague every four years. It’s a huge event over 11 days where 15,000 people attend. My wife, Amy, is a Lecturer in Theatre and Performance and was chairing a panel at the conference, so I decided to tag along – I did so four years ago and found it inspiring, check out my previous blog from then.

Amy’s first book – Meyerhold and the Cubists – was long-listed by the conference

Information boards in central Prague showcasing water’s importance to society

At the Prague Quadrennial, or PQ, countries (and regions, like Quebec) are invited to exhibit the best in their scenography and design over the past four years in about a 6m x 6m space. How they choose to do this is up to each country and there is a lot of variance and creativity on display. I was pleased to see several of the exhibits making use of VR but was a little disappointed that most did little more than show flat, low resolution, 360 videos on them – Ireland’s was notable as using high resolution, stereoscopic video, interlaced with graphics (including a creepy eyeball) to show the work of some of their best designers.

Several of the exhibits featured virtual reality, including some with modified headsets

Several of the exhibits chose environmental themes. I was taken by China’s exhibit as it revolved around a long distance train journey Chinese designers travelled to get to past PQ’s – in contrast to today, it was more expensive to fly so had to go by train.

China’s exhibit used lighting, projection, and mobile phones to showcase design inspired by a long distance train journey from China to Prague

Quebec explored whether reducing our use of resources was at odds with creative freedom, asking whether the performing arts holds the key to renewed environmentalism. They showcased the best in eco-scenography and invited visitors to complete a questionnaire whilst powering a pedal-powered propeller.

Quebec’s exhibited highlighted their designs and use of eco-scenography

Switzerland used a ski-lift carriage and a canvas held on hydraulic rods to visualise snow depth data in three dimensions, responding dynamically as the data changed resolution on the screen – you had a different perspective whether you were on the ground or one the lift.

Switzerland’s ski-lift could visualise environmental data dynamically and in three dimensions

France was one of the winning exhibits and several I spoke to said that it had moved them to tears. On the outside, harsh lights displayed the warning “No Nature, No Future” and on the other side a smoke-filled room with haunting piano music was inhabited by shaking and shivering figures made of the waste of man-made materials. It was bleak and dystopian.

The French exhibit made the waste materials of the artist into human-sized living creatures. It asked what we would be without nature

The conference itself engaged with environmentalism, with espresso-sized Keep Cups for sale, and an awesome scheme where if you bought a plastic bottle then Soda Stream, one of the sponsors, would refill it for free with fizzy, flavoured water – this was 200 czk (about £7) well spent, and I really want to buy a Soda Stream now!

I love a conference sponsored by Soda Stream with flavoured fizzy water on tap

The way the exhibits are put together was really inspiring and we have incorporated some of the ideas we saw into the design of the Earth Arcade, particular The Forest. You can find out more about this work on our poster for the European Geoscience Union meeting in 2020.

Portugal’s exhibit, Windows, featured mirrored metal boxes with small holes to peer through – inside were lit up models of stage designs. I would love to use this to hide away scenes of possible futures based on climate scenarios – dare you look inside?

Portugal invited you to spy on miniature design scenes through small windows

Cyprus featured a board room table with a bubbling pool of water in the middle – what about hosting a dinner around this where the water rises and falls, occasionally floods, and dinner guests can choose to purchase food, wooden blocks to hold back water, or extra place mats to raise their dinner?

A board room with a risk of flooding, from Cyprus

In Hungary’s student exhibit you had to walk through hanging plastic sticks and as they cascaded against each other it sounded like rain – through the clear floor beneath your feet were examples of design, details you cannot see outside of the ‘storm’. This was so simple, yet so effective.

Walking through a rain storm – Hungary’s student exhibit took you on a experiential journey through the clouds

I am always sad when we leave PQ, there always seems to be more to see and explore. It also means I have to leave Prague, which is a city I adore and would like to live in one day. With it being two years since the last PQ that means, all being well, we’re now half-way to the next one in 2023 – the organisers are now beginning to release details with an official announcement to be made on June 22nd. We plan on visiting again and by train, of course.

Improving environmental models - less is more

Improving Environmental Models: Less is More

I am speaking to the environmental modellers now. Imagine, you have been asked to make your model better, to improve its performance, and generally make it a more useful tool for decision makers. You have got a generous budget and free reign to do whatever you want. Just take a short moment to think about what you would do.

When you read the paragraph above, what did you think about? I am going to guess it was something along the lines of “Amazing, I’m going to add in representation of that process the model currently doesn’t have”. Maybe it was how you would increase the resolution of the model or how you would collect more data to add into it.  I am also going to guess that you did not think about what you would take away from your model.

A recent study by Adams et al (2021), published in Nature, found that we are hard wired to solve solutions by adding things in rather than looking at taking things away, despite the fact that taking something away would have been the better and more efficient way. I really encourage you to watch the video below that nicely summarises this work.

I know when I have approached modelling problems, my go to has been to add something in, rather than to consider what could be taken away. Yet, often when we add in new processes or increase the resolutions we may improve our outputs but we also increase the complexity, resulting in slower processing speeds and increased uncertainties. When assessing the models on how useful they are to decision makers, we may have actually made them worse.

The European Centre for Medium Weather Forecasts (ECMWF) have recently upgraded their Integrated Forecast System. One of the improvements they made is a great example of taking something away to solve a problem. Previously, they had stored numbers using 64-bits of memory within their computers. Using 64-bit over 32-bit allows you to store bigger numbers, i.e., use more decimal places and increase the precision of the output. This sounds like it is better, it sounds like if you had the option to go to 128-bit you ought to as you could have even bigger numbers and even greater precision still. The flipside is that storing and computing with bigger numbers takes a tiny bit longer to do each time and when multiplied over the vast number of sums the supercomputers at ECMWF do, this adds up. They realised that they did not need that level of precision and, for many processes, using 32-bit instead of 64-bit made little different to the output. Making the switch reduced the computational load by 40%, meaning swifter, and therefore more useful, results.

Photo by Gabriela Palai on Pexels.com

This is not anything new in numerical modelling and reduced-complexity approaches are popular and long established. However, these were designed with a conscious effort to take things away and it is when we stop making this conscious effort that we default back to adding things in as a first option. This is especially true, as the video tells us, when our cognitive load is high. Next time you sit down to solve a modelling problem make sure to remind yourself to stop and think – what can I take away to make this better?

Chris

Fridays are my non-work day so I try to write a short blog post on my thoughts about environmental modelling, games, or really anything else that is on my mind. The purpose is for nothing more than the love of writing and for practice but I do hope you enjoy them. For the avoidance of any doubt, all of the views and opinions I express in these blogs are very much my own and not those of my employer.