Secondly, it needs to be recognized that management of non-climatic stressors that interact and reinforce
the negative effects of warming and ocean acidification can go some way in mitigating the effects of climate change at the local level.
the hockeystick people carefully select a method which most highly weights the warmest proxies the effects people look only at the most dire
negative effects of warming they can find and choose not to investigate positive effects.
For instance, the greatest
negative effects of warming are expected to occur in the tropics because tropical species tend to have a narrower range of thermal tolerance when compared with higher latitude species.
«MS study correlates
negative effect of warmer weather on cognitive status.»
Kessler Foundation MS study documents
negative effect of warmer weather on cognitive performance
Not exact matches
The combination
of a slightly
warmer earth and more CO2 will greatly increase the production
of food, wood, fiber, and other products by green plants, so the increase will be good for the planet, and will easily outweigh any
negative effects.
It should be comfortable,
warm and as it has been mentioned before it is important for it to be flame - retardant and it shouldn't have a
negative effect on the sensitive skin
of the little one.
One
of the
negative environmental conditions that will worsen with the
effects of global
warming is the flooding
of farmland due to torrential rain.
«Immediate action is required to develop a carbon - neutral or carbon -
negative future or, alternatively, prepare adaptation strategies for the
effects of a
warmer climate,» said Dr Goodwin, Lecturer in Oceanography and Climate at Southampton.
The theory
of dangerous climate change is based not just on carbon dioxide
warming but on positive and
negative feedback
effects from water vapor and phenomena such as clouds and airborne aerosols from coal burning.
Furthermore, he said, the shrinking range
of pikas is just one example
of the
negative effects of global
warming on plant and animal species around the world.
In many
of the wood frog populations studied, researchers found evidence
of interacting temperature and precipitation influencing population size, such as
warmer summers having less
of a
negative effect in areas that received more precipitation.
When the AMO is in its positive phase and the sea surface temperatures are
warmer, the study has shown that the main
effect in winter is to promote the
negative phase
of the NAO which leads to «blocking» episodes over the North Atlantic sector, allowing cold weather systems to exist over the eastern US and Europe.
The research also appears to solve one
of the great unknowns
of climate sensitivity, the role
of cloud formation and whether this will have a positive or
negative effect on global
warming.
They speculate that a number
of events that relate to historical fishing practices, both commercial and recreational, combined with the
warming waters in the Gulf
of Maine may be increasing the
negative effects of the growth
of kelp.
So the best thing you can do is encourage them to stretch early in their
warm - up, and then do some more dynamic activity afterwards to help «shake out» the
negative effects of stretching before game time.»
For example, this November 2009 study, titled «
Negative effect of static stretching restored when combined with a sport specific
warm - up component,» which reaches the opposite conclusion.
Combat the
negative effect of extremely
warm weather conditions with fab dresses sculpted from natural and light textures.
Specification points covered are: Paper 2 Topic 1 (4.5 - homeostasis and response) 4.5.1 - Homeostasis (B5.1 lesson) 4.5.3.2 - Control
of blood glucose concentration (B5.1 lesson) 4.5.2.1 - Structure and function (B5.2 lesson) Required practical 7 - plan and carry out an investigation into the
effect of a factor on human reaction time (B5.2 lesson) 4.5.3.1 - Human endocrine system (B5.6 lesson) 4.5.3.4 - Hormones in human reproduction (B5.10 lesson) 4.5.3.5 - Contraception (B5.11 lesson) 4.5.3.6 - The use
of hormones to treat infertility (HT only)(B5.12 lesson) 4.5.3.7 -
Negative feedback (HT only)(B5.13 lesson) Paper 2 topic 2 (4.6 - Inheritance, variation and evolution) 4.6.1.1 - sexual and asexual reproduction (B6.1 lesson) 4.6.1.2 - Meiosis (B6.1 lesson) 4.6.1.4 - DNA and the genome (B6.3 lesson) 4.6.1.6 - Genetic inheritance (B6.5 lesson) 4.6.1.7 - Inherited disorders (B6.6 lesson) 4.6.1.8 - Sex determination (B6.5 lesson) 4.6.2.1 - Variation (B6.9 lesson) 4.6.2.2 - Evolution (B6.10 lesson) 4.6.2.3 - Selective breeding (B6.11 lesson) 4.6.2.4 - Genetic engineering (B6.11 lesson) 4.6.3.4 - Evidence for evolution (B6.16 lesson) 4.6.3.5 - Fossils (B6.16 lesson) 4.6.3.6 - Extinction (B6.16 lesson) 4.6.3.7 - Resistant bacteria (B6.17 lesson) 4.6.4.1 - classification
of living organisms (B6.18 lesson) Paper 2 topic 3 (4.7 - Ecology 4.7.1.1 - Communities (B7.1 lesson) 4.7.1.2 - Abiotic factors (B7.1 lesson) 4.7.1.3 - Biotic factors (B7.1 lesson) 4.7.1.4 — Adaptations (B7.2 lesson) 4.7.2.1 - Levels
of organisation (feeding relationships + predator - prey cycles)(B7.3 lesson) 4.7.2.1 - Levels
of organisation (required practical 9 - population sizes)(B7.4 lesson) 4.7.2.2 - How materials are cycled (B7.5 lesson) 4.7.3.1 - Biodiversity (B7.7 lesson) 4.7.3.6 - Maintaining Biodiversity (B7.7 lesson) 4.7.3.2 - Waste management (B7.9 lesson) 4.7.3.3 - Land use (B7.9 lesson) 4.7.3.4 - Deforestation (B7.9 lesson) 4.7.3.5 - Global
warming (B7.9 lesson)
The potential for surprises increases as a function
of sensitivity, but even «not so alarming» trends in
warming can have long standing
negative effects on reefal communities, continental aridity, etc..
Data from satellite observations «suggest that greenhouse models ignore
negative feedback produced by clouds and by water vapor, that diminish the
warming effects»
of human carbon dioxide emissions.
These latter two
effects are expected to lead to slight
warming, but the overall impact
of land use changes is expected to be
negative (i.e. a cooling)(Myhre and Myhre, 2003), although the uncertainty is still significant (maybe 0.5 W / m2 either way).
While we might HOPE FOR THE BEST — that there will be a cooling trend (less sun irradiance, etc) to exactly counteract our AGW trend (even so there is the
negative effects of CO2, even without the
warming — ocean acidification, crop loss to weed, etc)-- we should then be trying to AVERT THE WORST with even more drastic GHG cuts.
For example, Spencer et al 2007 analysis
of recent and precise climatologies suggests that the iris
effect is not dead, after all, and the order
of magnitude
of the
negative feedback -LRB--6 W / m2 TOA for
warm tropical events) is interesting.
This is what I get out
of it: the Arctic - ice - albedo situation is more complicated than earlier thought (due to clouds, sun - filled summers, dark winters, etc), but NET
EFFECT, the ice loss and all these other related factors (some
negative feedbacks) act as a positive feedback and enhance global
warming.
Similar
negative effects occur with worsening air pollution — higher levels
of ground - level ozone smog and other pollutants that increase with
warmer temperatures have been directly linked with increased rates
of respiratory and cardiovascular disease — food production and safety —
warmer temperatures and varying rainfall patterns mess up staple crop yields and aid the migration and breeding
of pests that can devastate crops — flooding — as rising sea levels make coastal areas and densely - populated river deltas more susceptible to storm surges and flooding that result from severe weather — and wildfires, which can be ancillary to increased heat waves and are also responsible for poor air quality (not to mention burning people's homes and crops).
# 92 Spencer el al 2007 paper doesn't really support the precise mechanism proposed by Lindzen for Iris
effect, but more simply observes a strong TOA
negative correction associated with
warming events at 20 ° S - 20 ° N (that is: in the 2000 - 2005 period
of observation, the most significative
warming episodes
of the surface + low troposphere — 40 days or more — leads to a
negative SW+LW cloud forcing at the top
of the atmosphere).
Spencer + Braswell have shown that over the tropics on a shorter - term basis, the net overall feedback from clouds with
warming is
negative; this is largely due to an increase in reflection
of incoming radiation by increased clouds with a smaller
effect from the reduction
of energy trapping high altitude clouds, which slow down outgoing radiation by absorbing and re-radiating energy.
In 2011, the Global
Warming Policy Foundation's website ran the headline «900 + Peer - Reviewed Papers Supporting Skepticism
Of «Man - Made» Global Warming (AGW) Alarm,» listing more than 900 papers which, according to the GWPF, refute «concern relating to a negative environmental or socio - economic effect of AGW, usually exaggerated as catastrophic.&raqu
Of «Man - Made» Global
Warming (AGW) Alarm,» listing more than 900 papers which, according to the GWPF, refute «concern relating to a
negative environmental or socio - economic
effect of AGW, usually exaggerated as catastrophic.&raqu
of AGW, usually exaggerated as catastrophic.»
New breeding lines derived from MAS, either in entirely new or recombined genetic backgrounds or in the background
of rice mega-varieties that are already planted to millions
of hectares, could potentially alleviate the
negative effects of climate change on rice production due to global
warming.»
@David: You write: «If the beneficial aspect
of CO2 increases in a lineal manner and the
warming effect of CO2 decreases logarithmically, then does it not makes sense that at some point CO2 itself becomes a
negative feedback?»
While the global warmmongers continue to wring their hands over rising temperatures hurting yields (the Corn Belt growing season has indeed
warmed slightly since 1960), improved varieties and the «global greening» benefits
of more atmospheric CO2 have more than offset any
negative weather
effects — if those even exist.
Before it is safe to attribute a global
warming or a global cooling
effect to any other factor (CO2 in particular) it is necessary to disentangle the simultaneous overlapping positive and
negative effects of solar variation, PDO / ENSO and the other oceanic cycles.
Its
warming effect, however, is simultaneously amplified and dampened by positive and
negative feedbacks such as increased water vapor (the most powerful greenhouse gas), reduced albedo, which is a measure
of Earth's reflectivity, changes in cloud characteristics, and CO2 exchanges with the ocean and terrestrial ecosystems.
Amongst other things the above link (2) shows how the
negative PDO from 1961 to 1975 cancelled out the
warming effects of solar cycles 18 and 19 and led to a cooling trend during those years despite the relatively high TSI levels.
Such higher levels
of warming would make it much more difficult for countries to keep the global temperature rise to below 2C, as they agreed to do at the landmark Paris climate summit last year, to avoid dangerous extreme weather and
negative effects on food security.
With continued
warming, however, benefits will likely peak and subsequently decline, and the
effects of climate change for the nation as a whole in these sectors will turn
negative.
But the utter incoherence
of views presented by deniers gives the game away even so (it's cooling, it's
warming but the sun is responsible, it's
warming but some unknown natural cycle is responsible, the «greenhouse»
effect violates the laws
of thermodynamics, but somehow the energy radiated back to the surface by the atmosphere simply vanishes, there is a greenhouse
effect but
negative feed - backs make it negligible, & c ad nauseam).
(While the data did suggest strong positive water vapor feedback, which enhances
warming, that was far exceeded by the cooling
effect of negative feedback from cloud changes.)»
[37] This hypothesis suggests a
negative feedback which would counter the
effects of CO2
warming by lowering the climate sensitivity.
The prominent upward trend in the GM precipitation occurring in the last century and the notable strengthening
of the global monsoon in the last 30 yr (1961 — 90) appear unprecedented and are due possibly in part to the increase
of atmospheric carbon dioxide concentration, though the authors» simulations
of the
effects from recent
warming may be overestimated without considering the
negative feedbacks from aerosols.
A self stabilising system which is as well capable
of neutralising any ocean skin
effect as it is capable
of neutralising
negative ocean cycles, positive ocean cycles and any
warming of the air by any increase in greenhouse gases.
To point out just a couple
of things: — oceans
warming slower (or cooling slower) than lands on long - time trends is absolutely normal, because water is more difficult both to
warm or to cool (I mean, we require both a bigger heat flow and more time); at the contrary, I see as a non-sense theory (made by some serrist, but don't know who) that oceans are storing up heat, and that suddenly they will release such heat as a positive feedback: or the water
warms than no heat can be considered ad «stored» (we have no phase change inside oceans, so no latent heat) or oceans begin to release heat but in the same time they have to cool (because they are losing heat); so, I don't feel strange that in last years land temperatures for some series (NCDC and GISS) can be heating up while oceans are slightly cooling, but I feel strange that they are heating up so much to reverse global trend from slightly
negative / stable to slightly positive; but, in the end, all this is not an evidence that lands»
warming is led by UHI (but, this
effect, I would not exclude it from having a small part in temperature trends for some regional area, but just small); both because, as writtend, it is normal to have waters
warming slower than lands, and because lands» temperatures are often measured in a not so precise way (despite they continue to give us a global uncertainity in TT values which is barely the instrumental's one)-- but, to point out, HadCRU and MSU
of last years (I mean always 2002 - 2006) follow much better waters» temperatures trend; — metropolis and larger cities temperature trends actually show an increase in UHI
effect, but I think the sites are few, and the covered area is very small worldwide, so the global
effect is very poor (but it still can be sensible for regional
effects); but I would not run out a small
warming trend for airport measurements due mainly to three things: increasing jet planes traffic, enlarging airports (then more buildings and more asphalt — if you follow motor sports, or simply live in a town / city, you will know how easy they get very
warmer than air during day, and how much it can slow night - time cooling) and overall having airports nearer to cities (if not becoming an area inside the city after some decade
of hurban growth, e.g. Milan - Linate); — I found no point about UHI in towns and villages; you will tell me they are not large cities; but, in comparison with 20-40-60 years ago when they were «countryside», many small towns and villages have become part
of larger hurban areas (at least in Europe and Asia) so examining just larger cities would not be enough in my opinion to get a full view
of UHI
effect (still remembering that it has a small global
effect: we can say many matters are due to UHI instead
of GW, maybe even that a small part
of measured GW is due to UHI, and that GW measurements are not so precise to make us able to make good analisyses and predictions, but not that GW is due to UHI).
Observed data and many studies indicate that a
warming climate has a
negative effect to crop production, generally reduce yields
of staple cereals such as wheat, rice and maize, which, however, differs between regions and latitudes.
BTW: There is no physical evidence that the assumption
of a net positive feedback is correct, and much physical evidence to suggest that the real world feedbacks are net
negative and will reduce the proposed direct
warming effect of CO2 towards (closer too) 0.
None
of the Annan / Hargreaves priors go below zero, and while this may be physically realistic it does not allow for the fact that the observational data generate
negative sensitivities, mostly because
of ocean cycle
warming and cooling
effects that the radiative forcing estimates do not take into account.
Meanwhile, the logarithmic
effect of CO2 is excellent «concession» to make in the rhetorical sense, since it concedes the obvious state
of our knowledge about the
effects of CO2, while at the same time providing us with the solid argument that even if we double atmospheric CO2 levels from 400ppm to 800 ppm over the next 100 years the largest amount
of warming possible — assuming all else remains the same and Gaia has no homeostasis
negative feedback systems which tend to moderate any runaway trends — is 1.2 c.
2 °C
of warming would have very
negative effects, which is why it is important to swiftly work towards the Paris goal
of the 1.5 °C limit.
If the
negative effects of climate change, the rising air temperatures, the changing precipitation, the prevalence
of extreme weather events, and the rising sea levels, become too disruptive or costly, we have the option to deploy certain climate altering technologies to remove greenhouse gases directly from the air or reflect sunlight back out
of the atmosphere before it
warms the earth.
Warming effect of CO2 is
Negative?