Sentences with phrase «warm ocean currents heat»

Not exact matches

Some glaciers on the perimeter of West Antarctica are receiving increased heat from deep, warm ocean currents, which melt ice from the grounding line, releasing the brake and causing the glaciers to flow and shed icebergs into the ocean more quickly.

Extreme weather does not prove the existence of global warming, but climate change is likely to exaggerate it — by messing with ocean currents, providing extra heat to forming tornadoes, bolstering heat waves, lengthening droughts and causing more precipitation and flooding.

If it is permanent, «it is logical to suggest that the winds and ocean currents change accordingly and switch us into a new regime where heat is not buried so deeply, and we jump to the next level in global warming,» Trenberth said.

The warm waters give up their heat in the bitterly cold regions monitored by OSNAP, become denser, and sink, forming ocean - bottom currents that return southward, hugging the perimeter of the ocean basins.

Climate models do not predict an even warming of the whole planet: changes in wind patterns and ocean currents can change the way heat is distributed, leading to some parts warming much faster than average, while a few may cool, at least at first.

So the report notes that the current «pause» in new global average temperature records since 1998 — a year that saw the second strongest El Nino on record and shattered warming records — does not reflect the long - term trend and may be explained by the oceans absorbing the majority of the extra heat trapped by greenhouse gases as well as the cooling contributions of volcanic eruptions.

Gray believes that the increased atmospheric heat — which he calls a «small warming» — is ``... likely a result of the natural alterations in global ocean currents which are driven by ocean salinity variations.»

A group of researchers find a new reason for the current hiatus of global warming: the Atlantic Ocean could be keeping things cooler by drawing heat into its deepest fathoms.

As the Arctic warms like crazy, heat flow there slows, thus jet streams slow and are wavier; the same slowing and waviness increase happens with ocean currents.

By analogy, a warmer world wouldn't be rainier (or cloudier); it's an imperfect analogy, because rain isn't absolutely correlated with cloudiness, and lateral transport of energy by ocean, air, and latent heat currents in and out of the E & W Pacific Ocean areas won't scale to global waocean, air, and latent heat currents in and out of the E & W Pacific Ocean areas won't scale to global waOcean areas won't scale to global warming

The current Landsea / Trenberth / Emanuel discussion has been parsed by many to mean that Landsea claims that the number of hurricanes is constant, and Trenberth is claiming that their intensity should increase as global warming heats the ocean surface.

If we knew ocean heat uptake as well as we know atmospheric temperature change, then we could pin down fairly well the radiative imbalance at the top of the atmosphere, which would give us a fair indication of how much warming is «in the pipeline» given current greenhouse gas concentrations.

BUT Reversing the Atlantic ocean current due to fresh water ice melt, is a local phenomenon, not global AND it does little to reduce the slow steady heat / energy buildup globally — so warming will continue.

The current energy imbalance at the surface (as demonstrated by the increasing heat content of the oceans) implies there is at least a further 0.5 deg C surface warming in the «pipeline».

The surface heat capacity C (j = 0) was set to the equivalent of a global layer of water 50 m deep (which would be a layer ~ 70 m thick over the oceans) plus 70 % of the atmosphere, the latent heat of vaporization corresponding to a 20 % increase in water vapor per 3 K warming (linearized for current conditions), and a little land surface; expressed as W * yr per m ^ 2 * K (a convenient unit), I got about 7.093.

As the area / volume ratio for the NH parts of the oceans is practically the same as for the SH, the surface heating (W / m2) must be larger in the NH parts, within the constraints of heat exchange via ocean and air currents (and partly by the difference in warming area in the tropics vs. the cooling areas in the higher latitudes)...

(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?

Even if there is equal warming in the tropics, but the heat is not dissipated to the poles fast enough by the ocean currents, the area of high SSTs will increase and more heat will dissipated by other means like TC's.

However, it is consistent with our current understanding of the climate: ocean heat is exchanged with the atmosphere, which causes surface warming, which alters atmospheric circulation, which alters cloud cover, which impacts surface temperature.

Surface temperature is an imperfect gauge of whether the earth has been warmed by an imbalance between incoming radiation from the sun, and outgoing radiation, because of the role of ocean currents in the distribution of heat between deeper and surface waters.

We have had lengthy heating phase caused by a spurt of insolation, now we have had a big El Nino, a subsequent shift to La Nina and the resulting warm currents moving up the the Western Pacific, causing warming polar oceans and changes in atmospheric water vapor content.

Part of problem is that even with current levels of emissions, the inertia of the climate system means that not all of the warming those emissions will cause has happened yet — a certain amount is «in the pipeline» and will only rear its head in the future, because the ocean absorbs some of the heat, delaying the inherent atmospheric warming for decades to centuries.

She then argues that this can't be attributed to human - caused global warming, which presumably implies something about the current rise in ocean heat content.

15 Heat Transport in the Biosphere The unequal heating of Earth's surface drives winds and ocean currents transport heat throughout the biosphere Winds form because warm air tends to rise and cool air tends to sink air that is heated near the equator rHeat Transport in the Biosphere The unequal heating of Earth's surface drives winds and ocean currents transport heat throughout the biosphere Winds form because warm air tends to rise and cool air tends to sink air that is heated near the equator rheat throughout the biosphere Winds form because warm air tends to rise and cool air tends to sink air that is heated near the equator rises

Additionally, the Atlantic Ocean is the only basin in which there is an equatorward warm surface current (part of the Meridional Overturning Circulation) and this ultimately carries heat to the North Atlantic - where it sinks.

For example, because the mass balance argument says nothing about absolute numbers or attribution it may be that we are also — for example — destroying carbon - fixing plankton, reducing the breaking of waves and hence mechanical mixing with the upper ocean, releasing methane in the tundra which was previously held by acid rain and which can now be converted to CO2, or it may be we are just seeing a deep current, a tiny bit warmer than usual because of the MWP, heating deep ocean clathrate so that methanophage bacteria can devour it and give off CO2.

This empirical finding contradicts Spencer's hypothesis that cloud cover changes are driving global warming, but is consistent with our current understanding of the climate: ocean heat is exchanged with the atmosphere, which causes surface warming, which alters atmospheric circulation, which alters cloud cover, which impacts surface temperature.

Since ENSO is a coupled ocean - atmosphere process, I have presented its impact on and the inter-relationships between numerous variables, including sea surface temperature, sea level, ocean currents, ocean heat content, depth - averaged temperature, warm water volume, sea level pressure, cloud amount, precipitation, the strength and direction of the trade winds, etc..

It then follows that we * MIGHT * actually be seeing the after effects of the Medieval warm period... Though I've read this wasn't a worldwide phenomena, though, it is likely that ocean current would have circulated the effect, and after 800 years, a localised heating of this type, might have an effect in all the deep ocean areas.

Conversely, during low solar activity during the Little Ice Age, transport of warm water was reduced by 10 % and Arctic sea ice increased.17 Although it is not a situation I would ever hope for, if history repeats itself, then natural climate dynamics of the past suggest, the current drop in the sun's output will produce a similar cooler climate, and it will likely be detected first as a slow down in the poleward transport of ocean heat.22 Should we prepare for this possibility?

Rising surface temperatures in the last three decades of the 20th century were roughly half caused by man - made global warming and half by the ocean currents keeping more heat near the surface, it finds.

Before this record drenching, they mention the 2012 record warm winter in the US Mid-West followed by record cold this winter; record heat in Australia when normally ocean currents would have cooled the land; and the UK's 2012 drought cancelled out by floods.

Warm currents transport heat from lower latitudes poleward and tend to occur on the western sides of oceans.

The West Antarctic Peninsula is bathed by relatively warm waters from the Antarctic Circumpolar Current that comes close to the surface near the peninsula, and that current is gaining heat as the oceans warm, studieCurrent that comes close to the surface near the peninsula, and that current is gaining heat as the oceans warm, studiecurrent is gaining heat as the oceans warm, studies show.

Here, we have shown that this warming was associated and presumably initiated by a major increase in the westerly to south - westerly wind north of Norway leading to enhanced atmospheric and ocean heat transport from the comparatively warm North Atlantic Current through the passage between northern Norway and Spitsbergen into the Barents Sea.»

It's very clear (thanks to Steve M, Willis etc) that there are issues with both but given the current hyped claim by the «warmers» that the past effects of man - caused global warming have largely been masked by the warming of the oceans and that unless we reduce CO2 emissions now that we won't be able to mitigate future global warming when this «stored heat» eventually comes back out of the oceans and leads to catastrophic effects, I'm very interested in getting to the punchline of this debate on SSTs.

But if you accept that the greenhouse effect is real, and that CO2 is a GHG, and that CO2 has increased (along with other GHGs), you have to accept the merit of my point: that solar, volcanoes, ocean currents and other natural variations do their thing, they vary, but GHGs exert a steady, constant upward forcing on temperature, which upward forcing is only offset by increased heat losses to space from a warmer planet.

A powerful pulse of heat that will reinforce the current weak, mid-ocean El Nino, lend energy to ridiculously warm Pacific Ocean sea surface states, and pave the way for a long - duration equatorial heat spike.

If greenhouse warming shut down the globe - girdling current that sweeps heat into the northern North Atlantic Ocean, he fears, much of Eurasia could within years be plunged into a deep chill.

The paper being discussed here makes the claim that the current hiatus in warming is due to the heat going into the Atlantic ocean as the Atlantic ocean is currently in the 30 year cooling phase of it's ~ 60 year warming / cooling cycle.

8 global circulation of deep ocean currents transports warm water to colder areas & cold water to warmer areas efficient heat - transport system drives Earth's climate

Therefore, the enhanced ocean heat sink is the main cause for the current slowing in surface warming.

Adding heat to the ocean, in contrast, slows down the overturning circulation because ocean currents depend on temperature gradients — moving from warmer locations to cooler locations — that weaken under global warming as cooler waters heat up.

In the Atlantic Ocean, the current known as the Atlantic Meridional Overturning Circulation (AMOC) ferries warm surface waters northward — where the heat is released into the atmosphere — and carries cold water south in the deeper ocean layers, according to the National Oceanic and Atmospheric AdministraOcean, the current known as the Atlantic Meridional Overturning Circulation (AMOC) ferries warm surface waters northward — where the heat is released into the atmosphere — and carries cold water south in the deeper ocean layers, according to the National Oceanic and Atmospheric Administraocean layers, according to the National Oceanic and Atmospheric Administration.

I like the 50 - 50 treatment but I think the surface warming to date, 1 degree, combined with continued rollover mixing of the oceans, thermohaline currents and tropical counter currents, etc., will lose all the future trapped heat in the deep ocean.

The effects of this marked shift in westerly winds are already being seen today, triggering warm and salty water to be drawn up from the deep ocean, melting large sections of the Antarctic ice sheet with unknown consequences for future sea level rise while the ability of the Antarctic Circumpolar Current to soak up heat and carbon from the atmosphere remains deeply uncertain.

Warmer oceans lead to great heat being advected via ocean currents to the polar regions, leading to more ice loss and general warming.

The arctic is mostly ocean covered by ice, so warm water currents could be bringing in heat.

Perversely, an abnormally warm current to the Arctic would cause warming of the atmosphere while reducing heat content in the ocean, making it appear as if the earth is warming when in fact it is cooling.

The current Landsea / Trenberth / Emanuel discussion has been parsed by many to mean that Landsea claims that the number of hurricanes is constant, and Trenberth is claiming that their intensity should increase as global warming heats the ocean surface and these claims can both be true.