Sentences with phrase «water cycle feedbacks»

The only sense in which your argument for a negative water cycle feedback makes much sense is if you are grouping together cloud and water vapor effects in such a feedback (which I guess is not unreasonable when you refer to it as «water cycle» but becomes confusing when you refer to it as «water vapor feedback»).

The water cycle feedback is about more than just the clouds and water vapor, it is about the evaporation and precipitation as well.

Not exact matches

So the fact that we have this very strong drying in the tropics during glaciation would argue for a strong feedback of water vapor concentration to the global climate during glacial - interglacial cycles.»

Paul Dirmeyer, a professor in the department of atmospheric, oceanic and earth sciences at George Mason University who was not involved in the study, notes: «Green et al. put forward an intriguing and exciting new idea, expanding our measures of land - atmospheric feedbacks from mainly a phenomenon of the water and energy cycles to include the biosphere, both as a response to climate forcing and a forcing to climate response.»

«Our new simulation strategy paves the way for better understanding of the water and carbon cycles in the Amazon,» says Gentine, whose research focuses on the feedback between land and atmosphere.

Martinson & Pitman III's hypothesis states that the fresh water input works in concert with the Milankovitch cycle and the albedo feedback.

The climate sensitivity classically defined is the response of global mean temperature to a forcing once all the «fast feedbacks» have occurred (atmospheric temperatures, clouds, water vapour, winds, snow, sea ice etc.), but before any of the «slow» feedbacks have kicked in (ice sheets, vegetation, carbon cycle etc.).

While there is at present no compelling reason to doubt the models» handling of water vapor feedback, it is not out of the question that some unanticipated behavior of the hydrological cycle could make the warming somewhat milder — or on the other hand, much, much worse.

That is clearly the Milankovitch cycles that initiate the process — and CO2 and water vapor (along with changes in albedo due to snow and vegetation) are both feedbacks.

To benefit from this feedback loop [known as the carbonate - silicate cycle], of course, planets must be volcanically active and they must be endowed with adequate supplies of both water and carbon.

The main areas covered in this work booklet are: The nervous system Reflexes Removing waste Synapses Reaction time The eye The brain Temperature regulation Water regulation Glucose regulation Negative feedback Menstrual cycle Contraception Fertility treatment Plant hormones Within the booklet are a range of different activities for students to work through to help them remember the content.

The climate sensitivity classically defined is the response of global mean temperature to a forcing once all the «fast feedbacks» have occurred (atmospheric temperatures, clouds, water vapour, winds, snow, sea ice etc.), but before any of the «slow» feedbacks have kicked in (ice sheets, vegetation, carbon cycle etc.).

If the CO2 rise is a carbon cycle feedback, this is still perfectly compatible with its role as a radiative agent and can thus «trigger» the traditional feedbacks that determine sensitivity (like water vapor, lapse rate, etc).

[Response: These feedbacks are indeed modelled because they depend not on the trace greenhouse gas amounts, but on the variation of seasonal incoming solar radiation and effects like snow cover, water vapour amounts, clouds and the diurnal cycle.

Re: # 139, ««The only feedback which is NOT significantly balanced is the water vapor cycle, but, again on a global scale that is just driven by the Clausius Clapyron relationship.

The only feedback which is NOT significantly balanced is the water vapor cycle, but, again on a global scale that is just driven by the Clausius Clapyron relationship.

There will be Regionally / locally and temporal variations; increased temperature and backradiation tend to reduce the diurnal temperature cycle on land, though regional variations in cloud feedbacks and water vapor could cause some regions to have the opposite effect; changes in surface moisture and humidity also changes the amount of convective cooling that can occur for the same temperature distribution.

While there is at present no compelling reason to doubt the models» handling of water vapor feedback, it is not out of the question that some unanticipated behavior of the hydrological cycle could make the warming somewhat milder — or on the other hand, much, much worse.

What applies in the case of the «fast» feedback from water vapor or sea ice applies in the case of the «slow» feedback from the carbon cycle and ice sheets.

For instance, perfect initialization of the state of the Atlantic ocean, a correct simulation of the next 10 years of the solar cycle, a proper inclusion of stratospheric water vapor, etc may be important for whether the next 5 years are warmer than the previous 5, but it has nothing to do with climate sensitivity, water vapor feedback, or other issues.

The maximum entropy principle forbids any positive feedback from the water cycle or atmospheric convection in general.

The supposed water vapor amplification mechanism will simply accelerate the water cycle slightly and produce little actual temperature rise, certainly less than the 1 C rise touted as a no - feedback case.

Corrected the sentence for you — because of course, it is already well known in traditional real world science that the Water Cycle, which you call the «hydrologic cycle», is a negative feedCycle, which you call the «hydrologic cycle», is a negative feedcycle», is a negative feedback.

Its seven chapters discuss the global climate models, forcings and feedbacks, solar forcing of the climate, and observations on temperature, the icecaps, the water cycle and oceans, and weather.»

He examines air / ocean equilibrium (plankton binding CO2, sinking it into the water), temperature feedback (warmer water holds less CO2), CaCO3 cycle equilibrium (calcium carbonate binding), and silicate weathering.

Is there a negative feedback to increasing CO2 (in the water cycle) that will negate its insulating effect?

To date, while various effects and feedbacks constrain the certainty placed on recent and projected climate change (EG, albedo change, the response of water vapour, various future emissions scenarios etc), it is virtually certain that CO2 increases from human industry have reversed and will continue to reverse the downward trend in global temperatures that should be expected in the current phase of the Milankovitch cycle.

What phase of the water cycle does water dominate feedbacks and not forcings?

As I've demonstrated, some warming has to be attributed to the positive feedback effect of water vapour, however, you are right in saying that the trigger for past warming was (almost always) solar activity (or Milankovitch cycles).

Nevertheless, saturation points do not describe the phase of the water cycle where water can be considered a feedback instead of a radiative forcing.

Orbitals, bottom water formation in the northern Atlantic and runaway ice feedbacks is a more likely chain of causality at a 100,000 year cycle.

1 Positive 1.1 Carbon cycle feedbacks 1.1.1 Arctic methane release 1.1.1.1 Methane release from melting permafrost peat bogs 1.1.1.2 Methane release from hydrates 1.1.2 Abrupt increases in atmospheric methane 1.1.3 Decomposition 1.1.4 Peat decomposition 1.1.5 Rainforest drying 1.1.6 Forest fires 1.1.7 Desertification 1.1.8 CO2 in the oceans 1.1.9 Modelling results 1.1.9.1 Implications for climate policy 1.2 Cloud feedback 1.3 Gas release 1.4 Ice - albedo feedback 1.5 Water vapor feedback 2 Negative 2.1 Carbon cycle 2.1.1 Le Chatelier's principle 2.1.2 Chemical weathering 2.1.3 Net Primary Productivity 2.2 Lapse rate 2.3 Blackbody radiation

This (discussion of) a paper / theory suggests that water is indeed important; it is a key in a negative feedback cycle that locks the earth into a nearly constant total greenhouse effect.

BUT, other important / related parameters — BRDF (bidirectional reflectance distribution function)-- albedo i. /: 00 solar local time Neural network based on CYCLOPES and MODIS / wrong ALSO Need to make assumptions about carbon lost via respiration to go from GPP to / Cox et al. (2000) Acceleration of global warming due to carbon - cycle feedbacks in a coupled / / JRC / FastOpt: http://www.fastopt.com/topics/publications.htmlhttp://www.fastopt.com/topics/publications.html 50 0 = water; 1 /

Ecosystem Feedbacks from Carbon and Water Cycle Changes — Vegetation changes in the Amazon Basin 5.

(yes I know that warmer air hold more water so their is a feedback, but not enough to be a self perpetuating cycle).

Impact on the hydrological cycle has the biggest impact cooling irrigated areas, but adding to water vapor feedback in others.

While the water vapor feedback is positive, the net feedback of the whole water cycle may well be negative.

The water cycle is a negative feedback not a positive feedback.

The controversy is over whether a faster water cycle is a positive or negative feedback.

These three sources speak of three entirely different things: a) the water vapor feedback, b) the carbon cycle feedback, and c) effects on precipitation of reduced longwave radiative cooling in the tropical lower troposphere.

So, that is my basic complaint about the argument that a faster water cycle somehow provides a negative feedback: To the extent that this expected to be true, it is incorporated into the models.

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Thus, sea ice has melted at an unprecedented rate and is now caught in a vicious cycle known as the ice - albedo feedback: as sea ice retreats, sunshine that would have been reflected into space by the bright white ice is instead absorbed by the ocean, causing waters to warm and melt even more ice.

Many of these positive feedbacks are also clear from modern observations (eg of water vapor) and theoretical modeling compared with measurements (eg of the carbon cycle).