SLS="Sea Level Sink" <=> More "Polar Ice Gain" <=> SLR="Sea Level Rise" ?
Joannes Sevenhans
Alcatel Academy Distinguished Member_2001 ...IEEE_Fellow_2000 for contributions to the design of solid state telecommunication transceivers ...PhD 1984 KULeuven ...Semi-retired ...Always looking for a next project ...
There was more than a 100 meter sea level rise at the end of the past glacial ...
But :
Depending of the position of your country on the globe between equator and poles ... things can go differently ...
If earth were flat then it would be easy to explain but earth is not flat and earth is rotating on its own axis ...
Gravitation keeps water down on earth surface or in the soil or in the oceans and rivers and lakes but ...
Gravitation force and earth rotation centrifugal force together make the fact that on the poles the sum of the 2 forces is 5 promille stronger than on the equator so 1000 liter of water on a pole is only 995kgf on the equator but 1000kgf on a pole ...
So soon as water gets fixed frozen in one of both pole ice caps then the the total weight of sea ice on the ocean surface increases by 5kgf per 1000 liter of water.
But there is also a lot of H2O=water vapor in the clouds :
Where did all this 3% of cloudiness go to ?
Look on the Antarctic :
Southern Hemisphere is dominated by ocean so it is easier to see what is happening there than in the northern hemisphere with so much more continental land.
Over the last 11 year we see antarctic sea ice making a swing up and down from 12,8 million square kilometer down to 10 million square kilometer and going up again now ...
In correlation with the weakening solar cycles the antarctic sea ice average has been going up with +0,8% gain slope per decade and a 3,5% swing on the long term average gain ...
So you see that melting/freezing pole ice caps can send the water from pole to ocean with sea level rise/sink or from pole to cloud without sea level rise/sink ...
On the coast of the Netherlands we see 18cm sea level rise over the past 100 year and nicely going further on the same slope ...
Is the land level there sinking or is the sea level there rising ?
On the Arctic it is quit impossible to monitor the sea ice gain correctly because the plentitude of continents there disrupt the sea ice and the broken ice blocks move south between the continents to melt in the ocean and move across the equator to the Antarctic pole ice cap ?
Looks like that is also happening ...
So melting ice from Arctic prefers to migrate to the Antarctic ?
Indeed ...
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At 4°C the density of H2O=water is on a maximum.
So H2O=water at +4°C sinks down to the bottom in the lower levels of the ocean and all other water stays above the +4°C lower ocean layer ...
So melting ice water stays at the water surface until it can warm up to +4°C to dive deep down to migrate to the antarctic pole ice cap via the +4°C layer of the ocean ?
Yes it seems to do that but :
Along the pole ice cap circle the meltwater stays at the melting temperature and solar heat radiation is very low there so the poles keep water heavy for high density and on top of that there is the +5 promille extra heaviness from the lack of rotational centrifugal lifting force near the poles ...
Water can nowhere get heavier than on the poles or along the pole ice cap circles arctic as well as antarctic but near the Arctic there are so many continents that these natural water liquid<=>ice exchange phenomena can easier be studied near the Antarctic.
But the original question to answer is :
So :
But anyway the centrifugal force will make sure that the probability for SLR="Sea Level Rise" wil get higher from both poles toward the equator.
But as long as the sea level does not rise near a continent then there will be no extra flooding so as in the Southern Hemisphere there is less continent so should we hope for :
Anyway ...
In climate science there are too many unanswered questions to answer and too many unquestioned answers to question ...
But : Health & Climate & Energy are realy very complicated science and very sensitive politico-scientific stuff and also delicate socio-economic stuff but we do the best we can and try to explain it as simple as possible but not simpler than that in the group :?CCR="Climate Change Revival
Developer of P2P, blockchain, open source, DApps, software systems engineering graduate
2 年Melted ice never overflows the glass
Business owner
2 年The big problem with sea level is to know whether the sea is changing height or the land is moving up or down.