Thermohaline circulation

　Have you heard the word "thermohaline circulation"? I extracted only to the thing of deep sea and have so far written the report. Then, deep sea and the surface sea don't have relation at all? It can say and that is never right. More than we are imagining rather, these two are a relation inseparable even if it cuts.

　Then, What is thermohaline circulation ? It is "heat" when thermo is put in another way. Moreover, when haline puts in another way, it is "salto". The density of sea water is decided by this heat and salt.

　What on earth happens with the density of sea water? First, it is cooled as the sea water which was flowing through the warm sea goes near the North Pole (or South Pole). And if the sea water becomes high latitude, it will begin to sink. High-density sea water sinks in deep sea further. Circulation becomes the point here. The sea water which sank in deep sea returns to a surface until 1200 years ago! The talk that it is patient.
　But this system has had big influence on us. What is it? Yes, it is climate.

　Recently, does the cold day continue in Japan? It is said that it applied especially to the end of last year or today, and had become cold markedly rather than the ordinary year. A little this is a wonder. Although "Global warming is progressing" is said, not to mention it gets warm in winter, why does it become cold in the world?

　First of all, let's observe the ice of the Arctic Ocean. The ice of the Arctic Ocean melts by introduction and warming. If a right photograph is seen, it turns out that this ice remarkable in 30 years has melted. And the more marine ice has a small area, the more it absorbs solar heat. Moreover, heat is emitted to the atmosphere from a sea surface because sea ice becomes small. Thereby, the atmosphere around the Arctic Ocean gets warm. Then, atmospheric pressure high up in the sky goes up, and the strong cold flows into Japan under the influence of various winds. High up in the sky, such a thing has happened.

　Then, how is this related to thermohaline circulation?

　The theory of "cooling conversely by warming" is leading in Europe. The system of thermohaline circulation has backed this up. Thermohaline circulation has a sea route like a belt as an upside picture is seen and understood. Moreover, sea water does not only simply move. Various heat and energies are conveyed. In other words, work like the conveyor belt of a factory is carried out. The cause of cooling feared what and now is in this. It is said that this conveyor, i.e., thermohaline circulation, may stop. 

This conveyor is moving according to the difference of the density of surface sea water and deep sea water. Since if sea ice, such as the Arctic Ocean, melts, the density of sea water will fall. 

Then, the power of sinking to the seabed gradually is lost. If it compares, it will be in a state it becomes impossible for a car to run with a gasoline piece. The slowdown of thermohaline circulation cannot be stopped but it may stop soon. If it becomes so, cooling will take place to the whole world. 

　Can you believe this theory? It seems that the earth itself is going to reset the inside with will completely. Always don't forget the natural threat. 

reference

• http://ja.wikipedia.org/wiki/熱塩循環
• http://techon.nikkeibp.co.jp/article/COLUMN/20120213/204698/?P=3
• http://blog.umigaeru.com/2009/01/the-day-after-tomorrow.html
• http://tamekiyo.com/documents/W_Engdahl/icemelting.php