Sentences with phrase «of ocean convection»
Reference: Oltmanns, M., J. Karstensen, J. Fischer (2018): Increased risk of a shutdown of ocean convection posed by warm North Atlantic summers.
https://www.geomar.de/ Not exact matches
The plume's more southern location, Toomey said, adds fuel to his group's findings, at three different sites along the globe encircling mid-ocean ridge (where 85 percent of Earth's volcanic activity occurs), that Earth's internal convection doesn't always adhere to modeling efforts and raises new questions about how ocean plates at Earth's surface — the lithosphere — interact with the hotter, more fluid asthenosphere that sits atop the mantle.
Rapid vertical mixing in the convection areas that exist everywhere over the warm ocean and in which the warm air rises takes care of the rest.
As global warming affects the earth and ocean, the retreat of the sea ice means there won't be as much cold, dense water, generated through a process known as oceanic convection, created to flow south and feed the Gulf Stream.
«Warm summers could weaken ocean circulation: Long - term observations reveal the influence of increased surface freshening on convection in the subpolar North Atlantic.»
But this new study supports researchers» growing suspicion that mantle convection somehow regulates the amount of water in the oceans.
Southern Ocean deep convection as a driver of Antarctic warming events, Geophysical Research Letters, 43, p. 2192 - 2199.
Duration: Approximately 30 mins 24 slides covering: • The Sun's Energy • Transfer of Energy • Radiation • Conduction • Convection • Uses of Radiated Energy • Life on Earth • Winds • Ocean Currents • The Water Cycle
This occurs mainly as a function of increased rainfall in the region which strengthens the ocean layering and reduces the amount of convection in the region.
These models consist of connected sub-modules that deal with radiative transfer, the circulation of the atmosphere and oceans, the physics of moist convection and cloud formation, sea ice, soil moisture and the like.
Applying the same logic, any of the 20th Century History runs which exhibited similar abrupt shifts (Southern Ocean sea - ice, Tibetan plateau snow melt and N Atlantic convection) which were not observed in the real - world, should have also been excluded from the ensemble mean for Marvel et al to have any hope of credibly extending inferences to real - world observational data — even if we suspend disbelief with respect to other problems associated with data, methods and relevance.
The reason is that the Holocene has a different pattern of ocean circulation with vigorous convection in the Greenland - Norwegian Seas.
Over the oceans where most tropical moist convection occurs, the amplification in the model is greater — about a factor of 1.4.
If so, then it could be that the heat was lost to space, but given the rapid redistribution of heat in the atmosphere via convection, isn't it also possible that the heat was transferred to the ice sheets, resulting in increased freshwater runoff to the oceans?
Long waves (infrared) light from the sun, GHGs, clouds, are trapped at the surface of the oceans, directly leading to increased «skin» temperature, more water vapor (a very effective GHG), faster convection (with more loss of heat to space in the tropics),... How each of them converts to real regional / global temperature increases / decreases is another point of discussion...
Going back to Ed Davies and Rasmus» replies at # 2: We know that there are feedbacks and system responses (e.g. ocean convection and advection of energy) that operate on various time scales.
This absorption of IR energy excites the molecules (for example, at the the oceans surface) and they transfer that energy to other molecules via conduction and convection.
(In real life I understand that mixing is the main agent of deeper warming in the ocean due to winds, currents, etc.) Only the top skin of water heats up and therefore lower warming must be by diffusion, or are convection cells within the water inevitable?
Winds (and tides and planckton) stir and mix the ocean and can force convection of heat downward.
To the «hatchet job» inference (# 177), I listened with my ears and nobody else's to the May 6th «Fresh Air» interview, when Gore moved from an ethanol / food price debate, to his joke about some minister's absurd believe that Katrina was New Orleans» punishment for a gay pride parade, to his clear inference that Myanmar and, previously, Bangladesh, are part of an emerging consensus that the trend towards more Category 5 and stronger storms appears to be linked to AGW, specifically the heating of the upper oceans, driving convection energy, etc..
The key however is to integrate over the whole space of internal variability — which includes variations in the North Atlantic Ocean convection.
Consenquently, the associated SST pattern is slightly cooler in the deep convection upwelling regions of the Equitorial Pacific and the Indian Ocean, strongly cooler in the nearest deep convection source region of the South Atlantic near Africa and the Equator, warm over the bulk of the North Atlantic, strongly warmer where the gulf stream loses the largest portion of its heat near 50N 25W, and strongly cooler near 45N 45W, which turns out to be a back - eddy of the Gulf Stream with increased transport of cold water from the north whenever the Gulf Stream is running quickly.
For a rough estimate, downwelling water to the deep ocean in convection zones is about 40 Sv (10 ^ 6 m3 / s), assuming that comes in with say 2 deg C, and leaves (through upwelling, isopycnal and diapycnal diffusion), that is a heat flux of 320 TW, thus at least an order of magnitude larger than the geothermal fluxes.
If we call the deep ocean the bottom 3 km, then, were it not for convection carrying the heat to the surface, the total geothermal heat flux of about 20TW would raise the temperature of the deep ocean by 1K every 4000 years or so.
This suppresses the upward convection of the heat absorbed from the sun by the ocean depths below the surface.
12 Ocean Currents, Weather and Climate These convection currents create warm and cold «streams» that influence the weather and climate of the land they pass.
With reduced upward convection from below, more of the sun's heat will remain in the ocean.
The LWR warms the ocean's surface skin, and slows the escape of the solar radiation absorbed by the ocean bulk, by reducing the convection of heat to the ocean surface.
The major outflow of heat from the air is via radiation and convection (dry air being a very good insulator) The ocean loses energy to the air, which in turn, loses it, ultimately, into space.
11 Thermal image of the Gulf Stream off the coast of the USA Ocean Currents In a similar way, radiation from the Sun heats the oceans, creating convection currents in the water.
The heat from the sun flows to the top of ocean by convection.
The mechanism by which the effect of oceanic variability over time is transferred to the atmosphere involves evaporation, conduction, convection, clouds and rainfall the significance of which has to date been almost entirely ignored due to the absence of the necessary data especially as regards the effect of cloudiness changes on global albedo and thus the amount of solar energy able to enter the oceans.
Any extra warmth generated in the atmosphere by CO2 or any other trace gas will quickly be neutralised by the hugely greater effect of the oceans in so far as it has not already been dispersed by increased radiation to space, evaporation, convection, condensation and rainfall.
Researchers observed a natural, regular, multidecadal oscillation between periods of Southern Ocean open - sea convection, which can act a release valve for the ocean's heat, and non-convective perOcean open - sea convection, which can act a release valve for the ocean's heat, and non-convective perocean's heat, and non-convective periods.
AGWSF's Greenhouse Effect doesn't have convection because it doesn't have real gases, it has substituted the imaginary ideal gas without properties and processes, but our real Earth's atmosphere does have convection — the heavy ocean of real fluid gas oxygen and nitrogen weighing a ton on our shoulders, a stone per square inch, acts like a blanket around the Earth stopping the heat escaping, compare with the Moon which has extreme swings of temperature.
The vertically integrated inventory of human emitted CO2 in the oceans is (not surprisingly) much greater in areas of cold deep convection, especially in the northern Atlantic (the falling leg of the thermohaline circulation), and much less in the tropics where the ocean is strongly stratified; absorption in the tropics really is more in the near - surface waters.
Further analysis reveals that overlying surface evaporation and atmospheric convection are modulated as a result of these forced changes to the temperature of the upper coastal Atlantic Ocean.
You know of course that incompressible convection is an ill posed problem so the ocean model has no more «correct» equations than prescribing T.
As you say «Simples» Think of the ocean as an open pot of warm water with constant heat input (TSI) at a level where water is held at constant temperature by evaporation and internal convection.
GCM developmental research focuses on sensitivity to parameterizations of clouds and moist convection, ground hydrology, and ocean - atmosphere - ice interactions.
Yes, and the thermal energy absorbed in the top of the ocean will also disperse to greater depths by diffusion, convection and ocean currents.
«The authors write that «the El Niño - Southern Oscillation (ENSO) is a naturally occurring fluctuation,» whereby «on a timescale of two to seven years, the eastern equatorial Pacific climate varies between anomalously cold (La Niña) and warm (El Niño) conditions,» and that «these swings in temperature are accompanied by changes in the structure of the subsurface ocean, variability in the strength of the equatorial easterly trade winds, shifts in the position of atmospheric convection, and global teleconnection patterns associated with these changes that lead to variations in rainfall and weather patterns in many parts of the world,» which end up affecting «ecosystems, agriculture, freshwater supplies, hurricanes and other severe weather events worldwide.»»
Any warming of the oceans from that source is almost immediately dissipated through evaporation & resulting convection and loss to space.
But we do have the issue of top skin of ocean getting quite a bit warmer - and if not due radiant [solar flux] that means, due to convection??
Here how it works: Think of the ocean as an open pot of warm water with constant heat input (TSI) at a level where water is held at constant temperature by evaporation and internal convection.
The «unnatural» warming so far seen is however trended strongly to the alterations to the planetary surface by Humanity over the past 400 years and the rebalance towards greater kinetic induction (in its cumulative effect) is now producing observable alterations not only to the Land Surface median Temperature, but to the Ocean (vie conduction / convection) and a still unconfirmed claim of a small overall rise in Median Atmospheric Temperature, which if «true» would place the Planetary Biosphere on the «Human Population Plot» with regard to «warming».
Over ocean stretches with a positive SST anomaly air convection is higher (as the temperature difference between the warm sea surface and the cool air higher up in the troposphere is greater), so a higher likelihood for the formation of depressions exists and more precipitation is to be expected.
If the only way for the heat to transfer to the rest of the ocean is convection, and heat rises in convection currents, how does the heat stay down there?
If we are to get a real idea of the rate of tropical convection that drives Hadley cell dynamics and the size of the subtropical high pressure cells we need to measure the rate of evaporation from the tropical ocean.
For 8 months of the year, reduced arctic sea ice increases heat loss from the Arctic Ocean due to increased convection, conduction, and evaporation and radiation losses.