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2007-10-18 16:16:02 · 2 answers · asked by Tung Nguyen 2 in Science & Mathematics Earth Sciences & Geology

2 answers

Yes it does have influence on the climate.

the transport of warm water to this region, that a decadal-scale shift in the flow of the NADC can initiate an ice age. A study was conducted by Moron. aimed at giving a global description of climactic phenomena that exhibited some regularity during the twentieth century. They first analyzed multi-channel singular spectrum data, which was then used to extract long-term trends and quasi-regular oscillations of global SST fields since 1901. From 1910 to about 1940, the authors observed a general warming trend with a short cooling before another brief warming trend. Substantial cooling occurred in the North Atlantic, from about 1950-1980, and continues today. Overall, a 13-15 year see-saw pattern oscillation between the Gulf Stream and the NADC was observed, and also found to affect the tropical Atlantic At times of increased trade wind strength, tropical and subtropical waters are forced across the equator, enhancing the pool of warm water to be transferred to the high latitudes of the North Atlantic via the Gulf Stream and North Atlantic Drift, thereby increasing the pull of the thermohaline convective conveyor. The increased supply of warm water to the polar regions of the northern hemisphere increases the ice-ocean moisture gradient and can accelerate ice sheet growth

the more distinct properties of the NADC waters themselves are poorly defined in the literature, the influences this current has on climate are well-documented. It is the contribution of warm waters from the North Atlantic Drift current that is now understood to be the main moderating force of the climate over western Scandinavia, the UK and western Europe And, based on diatom records, the NADC is thought to have been established as early as 13,400 years ago, although with periods of decadal-scale variations of heating and cooling The path of the NADC is clearly seen in the warming of the air over the western North Atlantic extending eastwards-and intensifying-into the Norwegian Sea have shown that a positive link exists between the NADC penetration into the Norwegian Sea and the North Atlantic Ocean (NAO) index, defined as the difference in sea-level pressure between two stations close to the low over Iceland and the high over the Azores. High NAO indices imply that only a narrow flow extends northward of the Faeroe-Iceland Strait, resulting in a sea-surface temperature (SST) cooling at the scale of the Greenland and Norwegian basins, owing to the spread of polar waters eastward. During these conditions, flow is simultaneously intensified in the narrow band along the Norwegian shelf, northwards towards Svarlbad. The strong westerlies caused by the high winter/spring indices bring in warm, moist air over the European continent and leads to a rather mild, maritime winter. Conversely, a low winter/spring index reflects weaker mean westerlies over the NAO, which in turn corresponds to colder European winters Movement of the NADC because of anomalous winds, will cause a significant latitudinal alteration in the climate zones of western Europe

2007-10-18 18:57:36 · answer #1 · answered by Kristenite’s Back! 7 · 1 0

Ah particular, Mike’s fashionable pastime, nitpicking of settled technological awareness and what-ifs suitable on the tangent of the envelope. After one hundred fifty years of technological awareness it’s greater interior the area of consumer-friendly experience at this element. all of us know that carbon dioxide is the accepted climate modulator. you won't have faith it yet what you suspect isn't appropriate because of the fact which you're actually not a pre-eminent paleo-climatologist, and neither are the different AGW disbelievers. there is just one appropriate question - the place is the commerce concept that explains why the launch of gigatons of fossil carbon interior the gap of one hundred fifty years, carbon that became laid down over thousands of hundreds of thousands of years, will have not have been given any impression? you are able to’t try this and so which you're decreased to rhetoric. besides the incontrovertible fact that, the greater egregious fault is permitting your political tendencies tell your medical point of view. An infinitely greater rational view may be to assume that the launch of geologic portions of carbon in what quantities to a geologic occasion will possibly have an impression of geologic proportions. The question has been what-iffed to dying, and the objections of you and your ilk have moved previous valid skepticism and into the area of criminal negligence. Your judgment of right and incorrect tells you're saving the international from charlatans, yet your ego and narcissism have have been given the better of you. you're like a loose power crank, on my own in his storage, attempting to maintain the international. Who has greater legitimacy Mike, a crank on my own in his storage or each and every of the medical companies of the international? purely a delusional crank might have faith the former.

2017-01-03 21:40:46 · answer #2 · answered by Anonymous · 0 0

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