Sentences with phrase «global dimming from»

Alarmists have posited that global dimming from anthropogenic aerosols reduced the warming that might have been expected, some implying that dimming may have prevented catastrophic warming.

(Part of the How to Talk to a Global Warming Skeptic guide) Objection: Scientists claim that global warming from greenhouse gases is being countered somewhat by global dimming from aerosol pollution.

Looks like another cover - up, false - flag story to get the public to enthusiastically accept the concept of Global Dimming from particle pollution as Global Cooling Chemtrails does nothing to decrease CO2, but they do most - massively increase the production of dead vegetation CO2, therefore increasing Global Warming

Global Dimming from particulate pollution has had a significant effect on the 20th century but is very uncertain in its total impact.

So while there may be additional, complicating factors (global dimming from the particulates slowing down the warming from the gases??)

we learn more about the role of global dimming from lesser amounts of dust we humans kick up all the time and 2.

Not exact matches

«It is very important to understand how global warming affects circulation patterns in the atmosphere,» says co-author Dim Coumou from Vrije Universiteit Amsterdam, Netherlands.

It comes from ARM and James Hansen's references to global dimming developing from clouds being enhanced and or formed by pollution, sulfates, and or certain aerosols and so forth.

The stifling of the warming trend is generally attributed to a counteracting cooling effect caused by global dimming, an inference that has since been supported by data collected by Ramanathan and others from a number of field campaigns.

Given the significant role such aerosols played in the 40's, 50's, 60's from U.S. and European emissions (prior to serious scrubbers), and that the scale in China / India right now is significantly larger, why wouldn't this aerosol screening (global dimming) be an issue?

This switch from a «global dimming» trend to a «brightening» trend happened just as global aerosol levels started to decline.

Dr Rotstayn says that «what our model is suggesting is that these droughts in the Sahel in the 1970s and the 1980s may have been caused by pollution from Europe and North America» and the commentary goes on to say «if his model is correct...» So the science is certainly not presented without caveats, and nowhere do we simply state that global dimming is unquestionably the cause of the Sahel drought.

First, the transcript uses the following comment from you as the lead - in to the comments by Peter Cox predicting major effects from the decline of global dimming over the next century: «We lived in a global warming plus a Global Dimming world, and now we are taking out Global Diglobal dimming over the next century: «We lived in a global warming plus a Global Dimming world, and now we are taking out Global Ddimming over the next century: «We lived in a global warming plus a Global Dimming world, and now we are taking out Global Diglobal warming plus a Global Dimming world, and now we are taking out Global DiGlobal Dimming world, and now we are taking out Global DDimming world, and now we are taking out Global DiGlobal DimmingDimming.

3) Global dimming largely is attributed to more reflection from clouds and longer lifetime of clouds as result of mainly sulphate aerosols.

Dr Schmidt would probably count himself a «global dimming sceptic», citing doubts about the sunlight and evaporation data («birds drinking from evaporation pans» etc.).

About the comment on 5), the source was the Horizon transcript, where Dr. Michael Roderick from Australian National University combined global dimming and pan evaporation.

Air pressure changes, allergies increase, Alps melting, anxiety, aggressive polar bears, algal blooms, Asthma, avalanches, billions of deaths, blackbirds stop singing, blizzards, blue mussels return, boredom, budget increases, building season extension, bushfires, business opportunities, business risks, butterflies move north, cannibalistic polar bears, cardiac arrest, Cholera, civil unrest, cloud increase, cloud stripping, methane emissions from plants, cold spells (Australia), computer models, conferences, coral bleaching, coral reefs grow, coral reefs shrink, cold spells, crumbling roads, buildings and sewage systems, damages equivalent to $ 200 billion, Dengue hemorrhagic fever, dermatitis, desert advance, desert life threatened, desert retreat, destruction of the environment, diarrhoea, disappearance of coastal cities, disaster for wine industry (US), Dolomites collapse, drought, drowning people, drowning polar bears, ducks and geese decline, dust bowl in the corn belt, early spring, earlier pollen season, earthquakes, Earth light dimming, Earth slowing down, Earth spinning out of control, Earth wobbling, El Nià ± o intensification, erosion, emerging infections, encephalitis,, Everest shrinking, evolution accelerating, expansion of university climate groups, extinctions (ladybirds, pandas, pikas, polar bears, gorillas, whales, frogs, toads, turtles, orang - utan, elephants, tigers, plants, salmon, trout, wild flowers, woodlice, penguins, a million species, half of all animal and plant species), experts muzzled, extreme changes to California, famine, farmers go under, figurehead sacked, fish catches drop, fish catches rise, fish stocks decline, five million illnesses, floods, Florida economic decline, food poisoning, footpath erosion, forest decline, forest expansion, frosts, fungi invasion, Garden of Eden wilts, glacial retreat, glacial growth, global cooling, glowing clouds, Gore omnipresence, Great Lakes drop, greening of the North, Gulf Stream failure, Hantavirus pulmonary syndrome, harvest increase, harvest shrinkage, hay fever epidemic, heat waves, hibernation ends too soon, hibernation ends too late, human fertility reduced, human health improvement, hurricanes, hydropower problems, hyperthermia deaths, ice sheet growth, ice sheet shrinkage, inclement weather, Inuit displacement, insurance premium rises, invasion of midges, islands sinking, itchier poison ivy, jellyfish explosion, Kew Gardens taxed, krill decline, landslides, landslides of ice at 140 mph, lawsuits increase, lawyers» income increased (surprise surprise!)

Global temperature decoupled from solar radiation in the 1960s (http://iopscience.iop.org/article/10.1088/1748-9326/7/3/034020/pdf), there was global dimming / brightGlobal temperature decoupled from solar radiation in the 1960s (http://iopscience.iop.org/article/10.1088/1748-9326/7/3/034020/pdf), there was global dimming / brightglobal dimming / brightening.

There are serious problems with the IPCC models because to justify high AGW they assume «global dimming», mostly from polluted clouds, of nearly half present median AGW [AR4].

«A paper recently published in the journal Weather finds that global summer average sunshine [solar short - wave radiation that reaches Earth's surface] dimmed during the period 1958 - 1983 [prompting an ice age scare], but markedly increased from 1985 - 2010.»

Even with near zero CO2, and the Sun 3 - 4 % dimmer than now, the tropics require albedo help from clouds and encroaching sea ice for global freeze - 0ver — hence, an interesting science problem that needs careful cold - climate cloud and ocean dynamics modeling.

Probably because of both mid-century «global dimming» from aerosols, and subsequent «global brightening» from reduced aerosol pollution, a different interval — e.g., 1976 to the present — would have required a very different dividing up of attributions.

Their belief came about because the optical physics of aerosols, originating from Sagan and introduced to climate modelling by his ex-students, Lacis and Hansen in 1974 at GISS / NAS, predicts the cloud part of «global dimming», the increase of albedo by aerosols supposed to hide present CO2 - AGW.

During dimming (1950s — 80s) the decline in surface solar radiation (SSR) may have outweighed increasing atmospheric downwelling thermal radiation (LW) from enhanced greenhouse gases and effectively counteracted global warming, causing only little increase in surface thermal emission (LW).

Addendum: The opposing effect of cooling from airborne pollutants is often referred to as «Global Dimming ``, and Real Climate has a couple of articles on it:

There is one aspect of climate change that is not fully established: the role of aerosol pollution (aka global dimming) from mainly from sulfates and soot (black carbon and organic carbon).

Existing climate models with a positive feedback from H2O are plain wrong, since they don't allow the heated water vapour to rise, forming clouds that contribute to global dimming, offsetting CO2 effects on temperature.

We have recently discussed several papers which have found substantial global dimming as a result of increased human aerosol emissions from 1950 to 1980 and 2000 to 2010.

In addition to Adrian Burd's recommendation, Al should read the comprehensive review by Wild: «Global dimming and brightening: A review» http://www.leif.org/EOS/2008JD011470.pdf «Recent brightening can not supersede the greenhouse effect as the main cause of global warming, since land surface temperatures overall increased by 0.8 °C from 1960 to 2000, even though solar brightening did not fully outweigh prior dimming within this period...» The story is nowhere near as simplistic as Al would haGlobal dimming and brightening: A review» http://www.leif.org/EOS/2008JD011470.pdf «Recent brightening can not supersede the greenhouse effect as the main cause of global warming, since land surface temperatures overall increased by 0.8 °C from 1960 to 2000, even though solar brightening did not fully outweigh prior dimming within this period...» The story is nowhere near as simplistic as Al would haglobal warming, since land surface temperatures overall increased by 0.8 °C from 1960 to 2000, even though solar brightening did not fully outweigh prior dimming within this period...» The story is nowhere near as simplistic as Al would have it.