Lux Helsinki 2024




Tale group: | Weather observations |
Class: | Climate change and weather |
Themes: | Arctic, art, replacing fossil fuels |
Continent: | Europe |
Location: | Helsinki, Finland |
Time: | Sun 7. Jan, 2024, 20:07 |
Temperature: | -16o C |




Art in the dark – Lux Helsinki 2024
Sound of my hard shoe soles echo from the art deco walls of the main shopping street, as I run towards church square. Sidewalks of Aleksanterinkatu are artificially heated and despite the past snowing and -16o C the red granite tiles are dry and tidy. I have rolled up the arms or my down jacket, so that the body heat can evaporate.
I had bit too large deep-frozen pizza for dinner and had to leave before finishing it – and still I am five minutes late. It is the last night of the urban light festival and all through it the temperature has been between -13 – -20 degrees Celsius. The plaza is packed – people have been waiting the frost to go by and since it did not, they are all here now, Sunday evening.
The big white church is painted with works of German and Finnish lighting artists and most other buildings by the works of a Finnish artist. With the music some of them are quite immersive. On the way home we see pieces of a Romanian and Italian& Finnish artist groups – along with the basic Helsinki winter illuminations.

CLIMATE VS. WEATHER:
First week of January 2024 was among the coldest in 100 years in Finland. Yet, climate is indisputably warming.
How can this be? And, actually in the Arctic the temperatures should rise even faster, than in average. The answer is two-part; polar vortex and the difference between a climate and weather.
CLIMATE:
Year 2023 was hottest year in possibly 100.000 years on Earth.
Copernicus, EU Space Programme
WEATHER:
End of year 2023 was cold in Scandinavia due to stable local cold airmass.
Finnish meteorological institute

STUDY
POLAR VORTEX: Too high combustion of hydrocarbons (oil, coal, gas) has triggered the climate change. In addition to global warming various irregularities in climate have increased.
Polar vortex – a large circular mass of cold air is a normal pattern close to poles. Past years polar vortex has weakened and sent away bursts of cold Arctic air. These cold fronts have remained even weeks over certain areas.
2023 HOTTEST YEAR: EU funded Copernicus Climate Change Service (C3S) is an organisation collecting and analysing long term weather data. By combining numerous climate key indicators, it has concluded 2023 to have been the hottest year since 1850.
Average annual temperature on Earth was 14,98 degrees Celsius, which is 1,48 degrees warmer than the pre-industrial 1850-1900. The report concludes that reasons for high temperatures are greenhouse gas concentrations, “El Niño” and other natural weather variations. Lowering fast the use of oil, gas and coal is essential in slowing down the climate change.
REPLACING FOSSIL FUELS: Electrical cars are replacing cars with combustion engines. They produce less carbon dioxide (depending, how their electricity has been produced), but require lot of rare earth metals, mining of which may be burden for nature.
So instead of only producing more electrical cars, we could consider using more public transport and to walk. Walking is also healthy and good way to keep fit. Also, we might give serious thought on what really is “necessary” moving – and how often it is needed.
It is difficult to electrify heavy traffic (trucks), so there some artificial fuels may be a solution. So called P2X (Power-to-X) means using surplus electric power to produce for example hydrogen or methane or further processed to synthetic fuel.
There is loss of energy in these processes, but they build on the idea, that if there is lot of unused “green” energy, the extra could be converted to a form, that could be used when winds or solar radiation are low.

ASSIGNMENTS
A. YOU
A1. Bad weather. Have you postponed or decided not to go to some event because of bad weather? When was that? What was the weather like and did you eventually go? How was it?
A2. Outdoor events. Are there some outdoor festivals or sport events in your area? Do you know if extreme weather has affected to them? Like heavy rains stopping sports games or forest fire warning or drought has cancelled fireworks.

A3. Snow. Have you ever walked on snow? What was the temperature – roughly? Did you know, that depending on the temperature and the structure of the snow it can be like dry powder, hard as ice or soft and wet – from slush to nice snow ball snow. What would be closest place to you, where there tends to be snow every winter?
B. SOCIETY
B1. Water and extreme cold. Most obvious – and lately unfortunately also more frequent extreme water conditions have been too hot and dry periods and torrents, i.e., heavy rains. So too little or too much rain. Both are bad for people and nature. Yet, normal amount of water combined with too cold temperatures can be harmful, too. Can you think how – for society? See “TIPS”, below, if in doubt.
B2. Energy. Often, but not always the air is quite calm, when it is really cold. So, the windmills do not produce energy. Yet, lot of extra energy is needed to heat houses. That means electricity may become quite expensive and scarce momentarily. What should be done then? How could you save energy? See “TIPS”, below, if in doubt.
C. REVALUING NATURE
C1. Replacing fossil fuels. Cheap fossil energy (oil, gas and coal) has been efficient and economic catalyst of our growth-oriented societies. As it causes global warming, we must stop using them. What ways there are to use less petrol for example in traffic?
DISCLAIMER AND CITATIONS:
All gif-icons here have been produced by DebaTales.com.
The map with red Africa, Asia and Europe and blue Scandinavia base to weather data of EU Copernicus Climate Change Service (C3S) Climate Data Store (CDS), but is simplified.

TIPS
Click the bolded heading by the triangle to open the drop down TIP.
Water and extreme cold:
If temperatures drop considerably lower, than usual, waterpipes may freeze. Once it gets warmer, water expands and may break pipes creating leakages, which are harmful for houses. Imagine water leaking to walls, ceiling or floor.
To avoid freezing waterpipes it is important to have proper insulation and to limit the access of the cold air close to the pipes. Sometimes it may even be good idea to leave water running a little to keep it moving in the pipes. Moving water freezes slower, as it keeps its temperature better, than still water.
Energy:
If there is less wind, more hydropower, nuclear, solar or even combustion energy plants will be activated. This is called regulating power. Electricity can also be imported from neighbouring countries. Yet, when it is really cold, people and businesses are often asked to lower their consumption. That could include lowering housing temperature, avoiding or minimizing use of machines that use lot of energy (stove, washing machines, etc.) and (warm) water.
Replacing fossil fuels:
Electrical cars are replacing cars with combustion engines. They produce less carbon dioxide (depending, how their electricity has been produced), but require lot of rare earth metals, mining of which may be burden for nature. So instead of only producing more electrical cars, we could consider using more public transport and to walk. Walking is also healthy and good way to keep fit.

LINKS
Polar vortex: https://en.wikipedia.org/wiki/Polar_vortex
Power to X: https://en.wikipedia.org/wiki/Power-to-X
Sustainable energy: https://en.wikipedia.org/wiki/Sustainable_energy
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