Feedbacks, by the way can be negative as well, acting to
reduce the warming effect.
(At high altitudes lapse rate kicks in to
reduce their warming effect.)
So, the way to picture it is that convection essentially
reduces the warming effect due to the addition of greenhouse gases.
The reduction in solar radiation cools the surface and
reduces the warming effect caused by greenhouse gases.
... very few scientists close to the problem, when asked the specific question, would say that they are 95 per cent sure that the effect of clouds is to amplify rather than to
reduce the warming effect of increasing carbon dioxide.
Reflective effects of aerosols recently directly observed have reflected much radiation back to space,
reducing warming effects, not just slowing them down.
Not exact matches
The
reduced downforce also has the knock - on
effect of tyres taking longer to come up to operating temperature (there are no tyre
warmers in IndyCar) as well as making them wear out quicker because the drivers are sliding around more.
Making little changes in your life can help the earth and help to
reduce the
effects of global
warming.
Taking into account the disastrous
effects of the 2003 and 2010 heat wave events in Europe, and those of 2011 and 2012 in the USA, results show that we may be facing a serious risk of adverse impacts over larger and densely populated areas if mitigation strategies for
reducing global
warming are not implemented.
Dr Meleady, a lecturer in psychology, added: «If similar interventions were to be implemented in comparable situations in other cities and countries, the potential contribution to
reducing air pollution, improving short and long term health, and
reducing effects of global
warming could be substantial.»
«The things acting to
reduce malaria spread, like improved healthcare and disease control, are much more powerful than the weak
effect of
warming,» Gething says.
However, in light of our substantiation of the
effects of «grand solar minima» upon past global climates, it could be speculated that the current pausing of «Global
Warming», which is frequently referenced by those sceptical of climate projections by the IPCC, might relate at least in part to a countervailing
effect of
reduced solar activity, as shown in the recent sunspot cycle.»
Proposals to
reduce the
effects of global
warming by imitating volcanic eruptions could have a devastating
effect on global regions prone to either tumultuous storms or prolonged drought, new research has shown.
But at breaks in the cloud deck, smoke has the opposite
effect: It is brighter than the dark ocean surface, reflecting solar radiation and
reducing warming.
Warm - water corals are particularly susceptible to these
effects and may not survive the century unless carbon emissions are greatly
reduced.
Indeed, the reduction in the emission of precursors to polluting particles (sulphur dioxide) would diminish the concealing
effects of Chinese aerosols, and would speed up
warming, unless this
effect were to be compensated elsewhere, for instance by significantly
reducing long - life greenhouse gas emissions and «black carbon.»
«Based on our findings, it appears that future Arctic
warming and
reduced sea - ice cover could have a strong
effect on tropical rainfall,» says James Collins.
Limited growth in a drier climate has restricted the amount of carbon that new trees can lock away from the atmosphere,
reducing their ability to counteract the
effects of global
warming.
So even without concerns about the
warming effect of carbon pollution in Earth's atmosphere, the Paris agreement goes a long way toward
reducing harmful air pollution worldwide.
Reducing the urban heat island
effect is becoming increasingly important as cities prepare for future
warming.
Furthermore, a deeper upper layer of
warm surface water may weaken the cold tongue if the Ekman pumping doesn't reach down below the thermocline to bring up colder water, and weakened trade winds would have a similar
effect through
reduced Ekman pumping near the equator.
While it will likely spur us into action on the technologies required to
reduce emissions, the
effects of global
warming will nonetheless still be felt by us, and by our descendants, for decades to come.
Since the UHI
effect is
reduced in windy conditions, if the UHI
effect was a significant component of the temperature record, then we would see a different rate of
warming when observations are stratified by calm or windy conditions.
Understanding how well climate models represent these processes will help
reduce uncertainties in the model projections of the
effects of global
warming on the world's water cycle.
Tropical and Southern Hemisphere
warming is the well - known
effect of
reduced heat transport to northern latitudes in response to the AMOC shutdown (Rahmstorf, 1996; Barreiro et al., 2008).
Ironically, future reductions of particulate air pollution may exacerbate global
warming by
reducing the cooling
effect of reflective aerosols.
These fats have many beneficial
effects besides keeping you
warm, including improving brain function and
reducing inflammatory conditions, such as arthritis.
Making use of the abundantly available natural energy sources help save our environment and can also
reduce the harmful
effects of global
warming.
The main reason for these new low viscosity oils is fuel efficiency, the side
effect is engineers have changed the oiling systems on new cars in various ways that do not tolerate high viscosity oils, but could assume you are correct about
reducing warm up time before oil flows to all internal parts in the engine.
Massage prior to running or other physical activity can boost performance and
reduce injury in competition, similar to the
effect warming up has for humans.
For global
warming scenarios, additional forcing comes into play: surface
warming and enhanced high - latitude precipitation, which will also
reduce density of northern surface waters (an
effect which alone has shut down deep water formation in some model experiments, e.g. Manabe and Stouffer 1993, 1994).
The fact that radiosondes agree more both with RSS and UAH TLT data in the northern hemisphere after the correction, without
reducing the level of agreement already existing with UAH in the tropics, means that the correction shows a curious
effect that I had mentioned before: there is more
warming in the extratropical northern hemisphere's lower troposphere than in the tropics.
Warming of the oceans leads to increased vertical stratification (decreased mixing between the different levels in the oceans), which would
reduce CO2 uptake, in
effect,
reducing the oceanic volume available to CO2 absorption from the atmosphere.
Since, on average, aerosols have a cooling
effect (although some absorbing aerosols like black carbon (soot) are actually adding to global
warming),
reducing current aerosol levels (particularly sulphates) is equivalent to an extra
warming effect.
It discusses the only the impact of the ocean on rates of
warming and how that
reduced expected trends in Antarctica with respect to earlier simulations that did not include such
effects.
But more generally, something I've wondered is: while in the global annual average, aerosols could be said to partly cancel (net
effect) the
warming from anthropogenic greenhouse forcing, the circulatory, latitudinal, regional, seasonal, diurnal, and internal variability changes would be some combination of
reduced changes from
reduced AGW + some other changes related to aerosol forcing.
Furthermore, a deeper upper layer of
warm surface water may weaken the cold tongue if the Ekman pumping doesn't reach down below the thermocline to bring up colder water, and weakened trade winds would have a similar
effect through
reduced Ekman pumping near the equator.
Cox seems to be straightforward in saying that
reduced aerosol
effects (cooling) will result in greater
warming (from GHGs) and that the cooling
effect now is stronger than normally supposed.
Thus an increase of average temperature, due to global
warming (which has most
effect in winter), will
reduce average mortality, not increase it...
After saying this stuff about clouds he went on to mention something similar to the infamous «iris
effect» (as the planet
warms, more clouds appear, thus
reducing insolation and limiting the temperature rise).
We present scientific evidence that any
effect which
reduces the slope of the vertical temperature profile within a stably stratified surface boundary layer will introduce a
warm bias, while any process that increases the magnitude of the slope of the vertical temperature profile in a stably stratified surface boundary layer will introduce a cool bias, remains a robust finding based on boundary layer dynamics.»
Before allowing the temperature to respond, we can consider the forcing at the tropopause (TRPP) and at TOA, both reductions in net upward fluxes (though at TOA, the net upward LW flux is simply the OLR); my point is that even without direct solar heating above the tropopause, the forcing at TOA can be less than the forcing at TRPP (as explained in detail for CO2 in my 348, but in general, it is possible to bring the net upward flux at TRPP toward zero but even with saturation at TOA, the nonzero skin temperature requires some nonzero net upward flux to remain — now it just depends on what the net fluxes were before we made the changes, and whether the proportionality of forcings at TRPP and TOA is similar if the
effect has not approached saturation at TRPP); the forcing at TRPP is the forcing on the surface + troposphere, which they must
warm up to balance, while the forcing difference between TOA and TRPP is the forcing on the stratosphere; if the forcing at TRPP is larger than at TOA, the stratosphere must cool,
reducing outward fluxes from the stratosphere by the same total amount as the difference in forcings between TRPP and TOA.
* global
warming is not significantly affected by human activity but governments expend resources and disrupt social order and economies to
reduce human impact but make no provisions for dealing with the
effects of
warming.
(Note that radiative forcing is not necessarily proportional to reduction in atmospheric transparency, because relatively opaque layers in the lower
warmer troposphere (water vapor, and for the fractional area they occupy, low level clouds) can
reduce atmospheric transparency a lot on their own while only
reducing the net upward LW flux above them by a small amount; colder, higher - level clouds will have a bigger
effect on the net upward LW flux above them (per fraction of areal coverage), though they will have a smaller
effect on the net upward LW flux below them.
IF cool deep sea water were mixed relentlessly with surface water by some engineering method --(e.g. lots of wave operated pumps and 800m pipes) could that enouromous cool reservoir of water a) mitigate the thermal expansion of the oceans because of the differential in thermal expansion of cold and
warm water, and b) cool the atmosphere enough to
reduce the other wise expected
effects of global
warming?
Re 9 wili — I know of a paper suggesting, as I recall, that enhanced «backradiation» (downward radiation reaching the surface emitted by the air / clouds) contributed more to Arctic amplification specifically in the cold part of the year (just to be clear, backradiation should generally increase with any
warming (aside from greenhouse feedbacks) and more so with a
warming due to an increase in the greenhouse
effect (including feedbacks like water vapor and, if positive, clouds, though regional changes in water vapor and clouds can go against the global trend); otherwise it was always my understanding that the albedo feedback was key (while sea ice decreases so far have been more a summer phenomenon (when it would be
warmer to begin with), the heat capacity of the sea prevents much temperature response, but there is a greater build up of heat from the albedo feedback, and this is released in the cold part of the year when ice forms later or would have formed or would have been thicker; the seasonal
effect of
reduced winter snow cover decreasing at those latitudes which still recieve sunlight in the winter would not be so delayed).
It melts without having much cooling
effect, and in short order there is net
warming because of the
reduced albedo of wet snow vs. dry snow and bare rock vs. snow cover.
Britain's efforts to
reduce the speed of global
warming will cost huge sums of money and have a pitifully tiny
effect»
Soot and haze in the air already
reduce surface insolation up to 10 % in some places, an
effect said to mitigate the
warming effect of greenhouse gases.
These plants are actually worse for global
warming than the dirty ones, since you can't scrub CO2, and the dimming
effect of the particulates is
reduced.