Climate change will raise the sea level in the Gulf of Finland

Apr 29, 2013
Climate change will raise the sea level in the Gulf of Finland
Credit: Eija Vallinheimo

The Finnish Meteorological Institute has updated its estimates concerning the impact of rising sea levels on the Finnish coast.

Post-glacial rebound and changes in the Earth's protect the Finnish against , especially in the Gulf of Bothnia. In the Gulf of Finland, the is starting to rise.

The rise in ocean levels varies regionally

Global warming raises at an accelerating pace, currently on average about three millimetres per year. The reasons for this are the of and the melting of glaciers. It is estimated that by the end of this century, ocean levels will rise at least about 20 centimetres. The highest estimates are nearly two metres.

There is, however, great in the rise, for reasons such as the uneven warming of seas, changes in the Earth's gravity field, and changes in the circulation of seas. The Finnish Meteorological Institute has used the latest scientific publications to estimate the impact of these regional factors on the Finnish coast.

As glaciers melt, mass will shift from continents into seas. In consequence, the Earth's gravity field and the height of the Earth's crust will be altered. The mass of continental glaciers will no longer attract sea water as strongly as before. In addition, the Earth's crust will rise under the lighter glacier. For this reason, the rise in the sea level will be minor near the melting glacier, whereas the rise will be felt more acutely further away from the glacier.In consequence, the melting of the continental glacier in Greenland will have a fairly small impact on the Finnish coast. The regional rise in Finland will remain below the global average.

The characteristics of the Baltic Sea affect the Finnish coast

In addition to the regional rise in ocean levels, local events in the affect the sea level changes on the Finnish coast. In Finland, the uplift of the land after the last is still 4–10 millimetres per year. Moreover, climate models predict stronger western winds, which will push water into the Baltic Sea through the Danish straits and water will accumulate against the Finnish coast.

So far, post-glacial rebound has offset the rise in sea level in Finland, but the situation is gradually changing on the southern coast. It is estimated that the sea level will start to rise in the Gulf of Finland. In the Gulf of Bothnia, the uplift is still likely to even out the sea level rise in the coming decades.

If the highest projections come to pass, the sea level will rise everywhere on the Finnish coast: by as much as 90 centimetres in the Gulf of Finland by the end of the century, by 65 cm in the Bothnian Sea and by about 30 cm in the Bay of Bothnia.

The current estimate concerns the change in the average sea level in the long term. In addition, the impact of waves and other changes in the short-term variation of the sea level must be taken into account in building and other activities on the coast. In the near future, the Finnish Meteorological Institute will update its estimates of the lowest recommended building heights, where these factors will also be considered.

Explore further: Water crisis threatens thirsty Sao Paulo

Provided by Finnish Meteorological Institute

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User comments : 10

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mememine69
1.7 / 5 (12) Apr 29, 2013
Boycott this fear mongering climate blame site. Delete this page folks!
Science will say a comet hit is real but won't say climate change is as real as a comet hit because not one single IPCC warning isn't swimming in "maybes".
Science has never said it WILL happen so why should I issue CO2 threats to my kids considering a climate change crisis "IS a comet hit of an emergency. Danger needs certainty not "maybe" otherwise it just makes neocons out of all of us.
Shootist
1.6 / 5 (13) Apr 29, 2013
Russians say otherwise.

http://english.ru...-expect/

According to scientists from the Pulkovo Observatory in St.Petersburg, solar activity is waning, so the average yearly temperature will begin to decline as well. Scientists from Britain and the US chime in saying that forecasts for global cooling are far from groundless. Some experts warn that a change in the climate may affect the ambitious projects for the exploration of the Arctic that have been launched by many countries.
antigoracle
1.6 / 5 (13) Apr 29, 2013
Sea level has been rising since the end of the last ice-age. What we should be alarmed about is the wasting of millions of dollars on AGW propaganda, that could be used to cure diseases, hunger and create greener technology.
Sean_W
1 / 5 (10) Apr 29, 2013
The Fins can borrow some taller wooden shoes from the Dutch.
gmurphy
4.6 / 5 (9) Apr 30, 2013
Wow, the same old tired parade of deniers, spouting the same old tired gibberish. What I find particularly amusing is how shrill their claims of 'propaganda' have become, how desperate their allegations of a vast global conspiracy to promote climate science in favour of global warming caused by human produced CO2. The fact remains that the only groups that have met in secret to pan deliberate distortions of climate science were funded by oil companies http://en.wikiped..._funding This truly exposes the complete hypocrisy of the climate deniers, a pathetic bunch to be sure, just like those who denied the holocaust, who denied the effects of leaded petrol, who denied the effects of CFCs and denied the effects of smoking. Take a long look at that list, it contains the dregs of society, the bottom feeders.
deepsand
3.2 / 5 (13) Apr 30, 2013
And, before becoming a shill for Big Energy, Fred Singer was one for Big Tobacco.
antialias_physorg
4.6 / 5 (9) Apr 30, 2013
how desperate their allegations of a vast global conspiracy to promote climate science

Somehow they never seem to notice that there is a distinct lack of rich scientists in the world. All that brainpower, and their 'conspiracy' doesn't seem to be getting them any (cars, women, money, political influence,... )
If it's a conspiracy it's the most lousy conspiracy I've ever seen.
antigoracle
1.5 / 5 (8) May 03, 2013
Wow, the same old tired parade of deniers,..., it contains the dregs of society, the bottom feeders.

Wow, the same old AGW Cult's list of lies and innuendos. It's the only way the Cult can challenge the truth about our climate from the 3% of TRUE climate scientist.
antialias_physorg
4.5 / 5 (8) May 03, 2013
Science has never said it WILL happen so why should I issue CO2 threats to my kids

You do (probably) warn your kids to look both ways before crossing a street - even though 'science' doesn't tell you that they WILL be killed if they don't.
It IS sensible to act if the risk that emanates from an event is high.
High risk can be
1) a high probability, low impact event (e.g. taking an umbrella out into the rain because you might get wet)
2) a low probability high impact event (e.g. an asteroid impact)

In the case of global warming (or looking both ways before crossingthe street) we have a high probability high impact event - which is the most obvious case on which to act.
deepsand
2.6 / 5 (10) May 04, 2013
Wow, the same old tired parade of deniers,..., it contains the dregs of society, the bottom feeders.

Wow, the same old AGW Cult's list of lies and innuendos. It's the only way the Cult can challenge the truth about our climate from the 3% of TRUE climate scientist.

Another steaming heap of TROLL TRASH.