Sentences with phrase «warming currents forcing»

Partly health - based, but largely down to warming currents forcing the algae partners of coral to desert their homes, this «disease» seems due to acidification of sea water.

Not exact matches

Schimdt has found evidence that warm ocean currents and convective forces beneath Europa's frozen shell can cause large blocks of ice to overturn and melt, bringing vast pockets of water, sometimes holding as much liquid as all of the Great Lakes combined, to within several kilometers of the moon's icy surface.

Climate model projections neglecting these changes would continue to overestimate the radiative forcing and global warming in coming decades if these aerosols remain present at current values or increase.

The shelves slow and stabilize the glaciers behind them, but they are succumbing to a hidden force: Deep, warming ocean currents are melting the ice from beneath.

Assuming the current anthropogenic CO2 forcing is larger than orbital forcings, shouldn't we expect more than 5C warming as an ultimate result?

The fact that human factors are forcing current warming trends is one outcome of those investigations.

It's a theory now substantiated by physics and observations regarding total radiative forcing and sensitivity, and in our current case of warming attributable to increased forcing agents form human / industrial means we are experiencing a change in trends pertaining to weather events driven by total change factors.

In context of current increased forcing and in consideration of all relevant natural and forced events and time scale, it is valid to say that this is expected in a warming world.

On the possibility of a changing cloud cover «forcing» global warming in recent times (assuming we can just ignore the CO2 physics and current literature on feedbacks, since I don't see a contradiction between an internal radiative forcing and positive feedbacks), one would have to explain a few things, like why the diurnal temperature gradient would decrease with a planet being warmed by decreased albedo... why the stratosphere should cool... why winters should warm faster than summers... essentially the same questions that come with the cosmic ray hypothesis.

Gavin disputes that the main driver of the sea ice retreat is the albedo flip, but we are seeing not only polar amplification of global warming but positive feedback, which would not be explained simply by radiative forces and ocean currents.

# 34 — So if the signature of solar and greenhouse gas forcing are the same over the last 120 years, how can we be sure that the current warming is mostly greenhouse gas induced?

I must add on, there are no reasons for the atmosphere as a whole not to warm, no active massive Volcano eruption neither extra sun reflecting aerosols, there is according to some a 1 W / m2 lull in solar forcing at this current solar minima.

Link iv.1: therefore current warmth is not unprecedented Link iv.2: therefore something other than man - made forcing can be responsible for this level of warming Link iv.3: therefore today's warming is more likely caused by something natural than by man - made forcing.

The scientists running the project stressed that it is not a formal forecast, but instead aimed at comparing different ways of analyzing what mix of forces — from winds and currents to any long - term contribution from human - caused global warming — is at work.

It would be foolish to «rule out» solar forcing completely, as certain correlations between solar variation and climate have certainly been observed in the past, and the current warm period has coincided with high solar activity.

although the experts are divided on what mix of forces is in play — from winds to warm currents to the underlying warming of the global climate from accumulating greenhouse gases.»

This is relatively small as to the total warming and certainly not as large as the current level of forcing, but never the less is a contributor.

Many think so, although the experts are divided on what mix of forces is in play — from winds to warm currents to the underlying warming of the global climate from accumulating greenhouse gases.

A more reasonable natural variability / forcing argument might go something like this: 1) There is natural variability of climate due to solar activity 2) Climate is changing now 3) Forcing can result in climate change, but the response of the C cycle to forcing is poorly understood 4) Forcing is happening now 5) Forcing and / or solar activity could be to blame for current warming trends Is this unreasforcing argument might go something like this: 1) There is natural variability of climate due to solar activity 2) Climate is changing now 3) Forcing can result in climate change, but the response of the C cycle to forcing is poorly understood 4) Forcing is happening now 5) Forcing and / or solar activity could be to blame for current warming trends Is this unreasForcing can result in climate change, but the response of the C cycle to forcing is poorly understood 4) Forcing is happening now 5) Forcing and / or solar activity could be to blame for current warming trends Is this unreasforcing is poorly understood 4) Forcing is happening now 5) Forcing and / or solar activity could be to blame for current warming trends Is this unreasForcing is happening now 5) Forcing and / or solar activity could be to blame for current warming trends Is this unreasForcing and / or solar activity could be to blame for current warming trends Is this unreasonable?

These are large rotating masses of water, in each ocean basin, where ocean currents converge at their centre and are forced downwards, taking warm surface water with them.

Johanessen et al conclude that the consistent appearance of recent warming with GHGs simulated supports the interpretation that the current warming is a forced response to GHGs, of which the increase is overwhelmingly human driven.

In our current situation, saying global warming is more appropriate since we can no longer enter an ice age due to the amount of imposed forcing

Roy Spencer is the driving force behind the «internal variability» hypothesis, which posits that some unknown and undefined mechanism is causing cloud cover to change, which, by changing the overall reflectivity of the Earth, is the driving force behind the current global warming.

2 — For future planning, it is more likely the world will be warmer rather than colder even if you exclude potential human - caused forcing (i.e. based on a continuation of the current overall trend, which has been broadly similar for a couple of centuries).

Ian Blanchard writes» — For future planning, it is more likely the world will be warmer rather than colder even if you exclude potential human - caused forcing (i.e. based on a continuation of the current overall trend, which has been broadly similar for a couple of centuries).»

Massive tilting escarpments of luminous ice that, in the current age of fossil fuel forced warming, often cup great 1 - 3 kilometer long melt ponds in their wildly varied topography.

This is because, following current best estimates, negative aerosol forcing has substantially offset the GHG - induced warming.

Current man - made GHG forcing ~ 3.1 watts / M ^ 2 Current heat accumulation ~ 0.5 watt / M ^ 2 Current aerosol offsets (AR5 SOD) ~ 0.8 watt / M ^ 2 Warming above pre-industrial ~ 0.85 C

Previous large natural oscillations are important to examine: however, 1) our data isn't as good with regards to external forcings or to historical temperatures, making attribution more difficult, 2) to the extent that we have solar and volcanic data, and paleoclimate temperature records, they are indeed fairly consistent with each other within their respective uncertainties, and 3) most mechanisms of internal variability would have different fingerprints: eg, shifting of warmth from the oceans to the atmosphere (but we see warming in both), or simultaneous warming of the troposphere and stratosphere, or shifts in global temperature associated with major ocean current shifts which for the most part haven't been seen.

'' By contrast, in all but a few models that forcing is significantly negative, and is one of the main reasons why current climate models match observed historical warming despite their generally high (transient) sensitivity.»

However, this actually contradicts John Christy's argument that the current sea ice decline could be natural, because that long - term orbital forcing has not reversed, and thus can not account for the sudden and rapid Arctic warming and concurrent sea ice decline.

Most of the deep ocean warming is occurring in the subtropical ocean gyres - vast rotating masses of water in each ocean basin where near - surface currents converge and are forced downward into the ocean interior.

But GCM - tuning exercises strongly suggest that external forcings from GHGs must be involved in producing the current warming trend.

There is only so much warming to attribute and the warming can't be both the equilibrium sensitivity from earlier forcings and the transient sensitivity from current forcings.

The Coriolis force in balance with this horizontal pressure gradient force gives rise to a dynamically induced geostrophic current, which occurs throughout the upper layer of warm water.

If negetive is to be interpreted as below the forced trend then perhaps the current lull in temperature gradient would imply a warming event.

So our current geologically rapid spike in GH gas levels has forced the oceans into a warming mode.

Even if it has been warmer at times during the current and previous interglacials, showing that the forcing is unprecedented, rising and currently overwhelming natural variation can be seen of itself to be sufficient cause for alarm (that it be overwhelming is not quite what the IPCC report states but the more than half post 1950 claim is similar).

To be clear, viewed in isolation with all other things being equal a warmer MCO is compatible with higher sensitivity, but the ratio of the MCO temperature to that current does not argue directly to the sensitivity one way or the other, but it does argue as to the ratio of the forcings.

16 years of «no warming» needs to be killed off in some way, and what better way than to claim the current solar dip is cancelling out the claimed CO2 forcing?

If the term warmer is with reference to the current period then the situation is a little different if we also assume that the current period is a time of exceptional forcing.

To account for the greater variation back then by inferring greater sensitivity does not avoid the paradox of why the claim for greater current forcing has not led to it being even warmer now than back then.

Deng et al., 2017 [DOI: 10.1002 / 2016JC012458] «The [Medieval Climate Anomaly] and [Little Ice Age] are climate anomalies that were caused by natural forcing (e.g., solar variability and volcanic emissions), but the [Current Warm Period] is linked to anthropogenic factors (e.g., industrialization and land - use changes)»

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.

Some models can already recreate the current warming sans forcing changes.

, but there is no empirical evidence to indicate that «CO2 forcing... will increasingly dominate» (the relation with concentration is logarithmic and you have no notion about other factors, such as those causing the current «lack of warming»), so this part should be eliminated

The bottom line is that humans are the driving force behind the current global warming.

And when I individually listed direct links to the papers that show man - made, not natural forcings, are responsible for the current warming, you still fail to reply.

Our current climate is being warmed by increased GHG's, which represent a greater net positive forcing than either anthropogenic or natural aerosols, or the current rather sleepy sun.

Each period (MWP, LIA, current warm period) has a unique combination of forcings (and related feedbacks).