Thank you oiseautempete, that's what I thought I understood.
That said, according to the oceanographer Bruno Voiturier that I quote, the gulf stream can not stop and although being an actor of the thermohalin flow, its existence is independent (understands who can):
(Source:
http://www.futura-sciences.com/fr/doc/t/climatologie/d/le-gulf-stream-peut-il-sarreter_637/c3/221/p2/)
So, can the Gulf Stream stop? The question, frequently asked by journalists, makes the scientist uncomfortable because if he answers "no" he states a scientific truth but unfortunately he does not answer the question actually posed concerning a phenomenon in which actually participates the Gulf Stream but which does not condition its existence: the famous "treadmill" resulting from what is called the "thermohaline circulation". If he answers "yes" he better satisfies the curiosity of the journalist but contributes to the myth of the Gulf Stream by maintaining the fiction of a Gulf Stream river that ".. takes its source in the Gulf of Mexico and throws itself into the Arctic Ocean "as described by Maury and amalgamating Gulf Stream = thermohaline circulation with the corollary that the second can only be interrupted if the Gulf Stream itself stops. Which is wrong.
Beyond the fact that its explanation is not clear, I do not see any valid argument justifying the invariance of the gulf stream.
How a consequence, a part, of a whole can not be modified by the modification of this whole, knowing that this whole is not invariable? (and besides, nothing is invariable in the universe, not even the latter)
This statement is questionable and contradictory. Unless I did not understand it.
Yet, according to other sources, the gulf stream is a part, a consequence, of the global oceanic thermohaline current.
Excerpt on wikipedia:
The role of these convective loops is essential because it allows the transport of heat, released in the atmosphere, from the equator to the poles. If this transfer did not exist, it would be warmer at the equator and colder at high latitudes. The Gulf Stream and Kuro Shivo warm the waters respectively off Europe and Japan. Oceanic convection also plays an important role in the carbon cycle. Diving marine waters causes a large amount of carbon dioxide (CO2) that has been captured from the atmosphere and is dissolved in it. This carbon dioxide is partially returned to the atmosphere when the deep water resurfaces [1]
Another extract on wikipedia:
The Gulf Stream is an ocean current that rises between Florida and the Bahamas and dilutes in the Atlantic Ocean towards the longitude of Greenland. Its name is abusively used to designate the North Atlantic drift, or even the whole surface circulation of the North Atlantic Ocean.
And here is the confusion that the author is trying to describe, still according to wikipedia:
The North Atlantic Drift is a warm and powerful ocean current that extends the Gulf Stream to the northeast. It splits in two west of Ireland. One of the branches (the current of the Canaries) goes to the south while the other continues along the coasts of north-west of Europe where it has a considerable influence on the climate by warming it. Other branches include the Irminger Current and the Norwegian Current. Originally, it is an extension of the Gulf Stream that goes further north and flows into the Arctic Ocean. Climate change, and in particular global warming, can have a significant effect on the North Atlantic drift.
Pignouf or informant?
"If you are not careful, the newspapers will eventually make you hate the oppressed and the oppressors worship. "
Malcolm X
