Category Archives: Aerosols

New paper: man-made aerosols have had a net cooling effect since beginning of industrial revolution

More aerosols, means more clouds, which means cooler temperatures. Now that we are cleaning up aerosols worldwide, this may explain why the Earth is getting slightly warmer – more sunlight reaches the surface A paper published today in Science claims … Continue reading

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Posted in Aerosols, clouds, feedbacks | 52 Comments

Oops! ‘Dieselification’ of London due to CO2 regulations have increased actual air pollution

London’s Dirty Secret: Pollution Worse Than Beijing’s Reader Drew H. submits this story. It’s the law of unintended consequences at work. European Union efforts to fight climate change favored diesel fuel over gasoline because it emits less carbon dioxide, or … Continue reading

Posted in Aerosols, Air pollution, Government idiocy | 114 Comments

Some hype sorting on the claim that Asian pollution is intensifying Pacific Storms

Is Asian Pollution Intensifying Pacific Storms? Separating the Hype from Reality. By Cliff Mass The media over the past week have given a lot of play to a paper in the journal Proceedings of the National Academy of Sciences (PNAS) … Continue reading

Posted in Aerosols, extreme weather | 24 Comments

JPL Claim: Asian Pollution makes US Storms Worse

Story submitted by Eric Worrall A new study from NASA’s JPL claims Asian air pollution causes worse storms in North America, especially during winter. According to abstract, the study used a global climate-aerosol model to compare current conditions with modelled … Continue reading

Posted in Aerosols | 48 Comments

Volcano Activity, Temperature and Response Times:

Guest essay by Neil Catto In view of the possible reasons for the 17-20 year global temperature plateau and further to Willis’ post a couple of weeks ago “Volcanoes Erupt Again”, I have been working on the same subject from … Continue reading

Posted in Aerosols, Volcanoes | 48 Comments

A case of the vapours: source of ‘climate-active’ organic aerosol particles pinned down

From Forschungszentrum Juelich , comes what looks to be a pretty important discovery about how plant emitted aerosols like Great Smoky Mountains National Park haze comes about and grows large enough to reflect significant sunlight, something climate models don’t yet … Continue reading

Posted in Aerosols | 42 Comments

Study: Volcanoes contribute to recent warming ‘hiatus’

Researchers find models must account for volcanic eruptions to accurately predict climate change. From:MIT Joint Program on the Science and Policy of Global Change By the late 1990s, scientists had observed more than two decades of rapid global warming, and … Continue reading

Posted in Aerosols, Modeling, Volcanoes | 182 Comments

Picture of how our climate is affected by greenhouse gases is a ‘cloudy’ one

Cloud cover is a major forcing, and uncertain, say researchers from the Hebrew University, US and Australia Jerusalem, Jan. 26, 2014 – The warming effect of human-induced greenhouse gases is a given, but to what extent can we predict its … Continue reading

Posted in Aerosols, clouds, Weather | 103 Comments

‘Made in China’ – US air pollution tied to exports

Chinese air pollution blowing across the Pacific is often caused by manufacturing of goods for export to the US and Europe, according to findings by UC Irvine and others. Study finds blowback causes extra day per year of ozone smog … Continue reading

Posted in Aerosols | Tagged , , | 27 Comments

Yes, but what about all that extra UHI that water vapor will cause?

Not to mention the water pollution…from Springer Select: To curb China’s haze and air pollution, use water New geoengineering research suggests pollution-control measures inspired by watering a garden A new idea to cut back on air pollution: spray water into … Continue reading

Posted in Aerosols, Geoengineering, UHI | 39 Comments

First time in 20 years – more daily record lows than daily highs that were either tied or set in 2013

2013 was a cool year in many ways. Most interestingly, the last year this split between highs and lows happened in the USA, in 1993, we had the eruption from Mt. Pinatubo the prior year which ejected so much aerosol … Continue reading

Posted in Aerosols, Climate data, records, Temperature, Volcanoes, Weather | Tagged , , | 52 Comments

Environmental concern disappears with economic instability

From University of Southern California  another lesson from the economic train wreck that is Greece; people stop worrying about the environment when you make cleaner fuels too expensive to use. The price for heating oil has skyrocketed in Greece over … Continue reading

Posted in Aerosols, Energy, Environment | Tagged , , , , , , , | 77 Comments

Pollen has bigger influences on optical properties of the atmosphere than previously known

From Leibniz-Institut für Troposphärenforschung something that could be a possible negative feedback to CO2. As plants proliferate more due to increased CO2, it follows that pollen load in the atmosphere would also increase. Laser measurements show: pollen has considerable influence … Continue reading

Posted in Aerosols, feedbacks | Tagged , , | 46 Comments

Real pollution (not ‘carbon’ pollution) increases storm clouds

From the Pacific Northwest National Laboratory: A common theme among climate alarmists is that the wrongly named ‘carbon pollution’ aka carbon dioxide, increases the frequency and intensity of storms. Observational data show that NOT to be true,  and this new study … Continue reading

Posted in Aerosols, clouds, thunderstorms, Weather | 26 Comments

Study: ‘Climate change scientists must turn their attention to clean skies’

From the University of Leeds  and the department of real problems, comes this paper: Natural aerosols, such as emissions from volcanoes or plants, may contribute more uncertainty than previously thought to estimates of how the climate might respond to greenhouse … Continue reading

Posted in Aerosols, Climate News | Tagged , , | 50 Comments

Better US air quality since 1990 offers health benefits

From Brigham Young University: Breathing better, living longer Arden Pope’s students know him as an excellent economics teacher, but some would be surprised to learn that, thanks to him, the air they breathe today is cleaner than the first breath … Continue reading

Posted in Aerosols, Environment | Tagged | 21 Comments

Is palm oil one of the largest sources on man made aerosols?

From NASA, while we wring our hands over coal fired power plants in the west, the rest of the world seems oblivious to creating even far worse air pollution. Hi-res sat image follows. Illegal Fires Set in Indonesia Cause Smog … Continue reading

Posted in Aerosols, Agriculture | Tagged , , , | 93 Comments

Shocker: Global warming may simply be an artifact of clean air laws

Pollution controls have contributed to a more transparent atmosphere, thus allowing for “…a staggering increase in surface solar radiation of the order of ∼20% over the last decade.” A new paper (O’Dowd et al.) from the National University of Ireland … Continue reading

Posted in Aerosols, Temperature | Tagged , , , | 183 Comments

Ocean warming – it’s the aerosols

From CSIRO, but sadly just with modeling, not empirical analysis: Rapid upper ocean warming linked to declining aerosols Australian scientists have identified causes of a rapid warming in the upper subtropical oceans of the Southern Hemisphere. They partly attribute the … Continue reading

Posted in Aerosols | Tagged , | 57 Comments

Wildfire aerosols not handled well in climate modeling

From Los Alamos National Laboratory: Wildfires may contribute more to global warming than previously predicted They suggest that fire emissions could contribute a lot more to the observed climate warming than current estimates show. Haze of smoke emanating from the … Continue reading

Posted in Aerosols, Carbon soot | Tagged , , , | 37 Comments

Asia’s air pollution may be keeping tropical storm activity down

From the Law of Unintended Consequences and The Clean Air Act, comes this bit of news. Since the 1970′s The Clean Air Act has benefited breathing in many American cities with tangible results (just look at Los Angeles), but it … Continue reading

Posted in Aerosols, hurricanes, Weather | Tagged , , , , , , , | 34 Comments

Whoops! An inconvenient truth for ‘global warming makes more rain’ advocates: reduced pollution increases rainfall

From the “Department of Unintended Consequences” and Georgia State University  comes this oops moment in science. And all that time we are being told by people like Peter Stott that it was the increase in “global warming” that has increased … Continue reading

Posted in Aerosols, Rainfall, Weather | Tagged , , , , , , , | 48 Comments

Cirrus Cloud seeds identified – will help in climate knowledge

From the Massachusetts Institute of Technology , a fairly important discovery, one that will help us understand the role clouds play in the Earth’s energy balance. The fact that mineral dust and metallic aerosols are identified would suggest that as … Continue reading

Posted in Aerosols | Tagged , , , , , | 36 Comments

A case of the vapors – another global cooling mechanism found

From the University of Manchester Organic vapors affect clouds leading to previously unidentified climate cooling University of Manchester scientists, writing in the journal Nature Geoscience, have shown that natural emissions and manmade pollutants can both have an unexpected cooling effect … Continue reading

Posted in Aerosols | Tagged , , , , , , , | 79 Comments

Those dirty trees: why hasn’t the EPA called for trees to be regulated?

From the University of North Carolina at Chapel Hill one wonders why they have not thrown the  PM10 hammer (or ax) at trees to save humans from their terrible effects /sarc. Researchers pinpoint how trees play role in smog production … Continue reading

Posted in Aerosols | Tagged , , | 95 Comments

Study: Black carbon aerosol forcing may be an important factor affecting the snow & ice cover in the Northern Hemisphere

We’ve had several essays here at WUWT  on the role of Black Carbon soot and its role in affecting surface albedo. Anyone who has ever witnessed “dirty snow” knows that it tends to melt faster than white snow under sunlight … Continue reading

Posted in Aerosols, Carbon soot | Tagged , | 58 Comments

Aerosols from Moderate Volcanos Now Blamed for Global Warming Hiatus

While looking for quotes on an upcoming post about Ocean Heat Content, I ran across the press release for a new paper (in press) by Neely et al, which blames the recent slowdown in global warming on smaller more moderate … Continue reading

Posted in Aerosols, Consensus, Global warming, Uncertainty, Volcanoes | 276 Comments

Dust’s excellent global adventure ends in California’s Sierra Nevada

From the Scripps Institute: Saharan and Asian Dust, Biological Particles End Global Journey in California UCSD, NOAA study is the first to show that dust and other aerosols from one side of the world influence rainfall in another Scripps Institution … Continue reading

Posted in Aerosols, Rainfall, Weather | Tagged , , , , , | 49 Comments

Harvesting Fog: The No-Regrets Option

Guest Post by Willis Eschenbach I’ve written before about the “no-regrets” option when one is faced with uncertainty. It relates to one of my favorite rules of thumb. I often live my life by my “rules of thumb”, general guidelines … Continue reading

Posted in Aerosols, Curious things, fog, Weather | Tagged , , | 106 Comments

PODEX Experiment to reshape future of Atmospheric Science by getting a handle on aerosols and clouds

Polarimeter Definition Experiment (PODEX) in Southern California. The brightness, or “intensity,” and polarization of reflected light provide different information about the elements that make up a scene, apparent in this set of images collected by the Airborne Multiangle SpectroPolarimetric Imager … Continue reading

Posted in Aerosols | Tagged , , , | 15 Comments

A bit of a bombshell from the AGU IGBR: Black carbon is a larger cause of climate change than previously assessed

From the International Geosphere-Biosphere Programme via Eurekalert, some of the heat gets taken off CO2 as the ‘big kahuna’ of forcings, now there is another major player, one that we can easily do something about. I’ve often speculated that black … Continue reading

Posted in Aerosols, Carbon soot, Global warming | Tagged , , , | 169 Comments

Law of unintended consequences – fuel tax designed to lower air pollution actually creates more air pollution

Another application of the Grecian government formula blows up in their faces. From EuroNews: Smog hits Athens as cash-strapped residents choose fire over fuel Bad news for austerity-stricken Greeks is also proving to be bad news for the environment – … Continue reading

Posted in Aerosols, Government idiocy | Tagged , , , , | 99 Comments

Why doesn’t the AR5 SOD’s climate sensitivity range reflect its new aerosol estimates?

This article is a detailed complement to Matt Ridley’s Op-Ed today in the Wall Street Journal: Cooling Down the Fears of Climate Change Evidence points to a further rise of just 1°C by 2100. The net effect on the planet … Continue reading

Posted in Aerosols, Climate sensitivity, IPCC, IPCC AR5 leak | Tagged , , , , , , , | 83 Comments

Another hole in the climate models – no lamp black forcing

Interesting point, but I wonder how such a change would come about when people often can’t afford an alternative? Let there be clean light: Kerosene lamps spew black carbon, should be replaced, study says By Sarah Yang, Media Relations BERKELEY … Continue reading

Posted in Aerosols, Carbon soot | Tagged , , , , | 128 Comments

Some new climate surprises blow in with the dust

From NASA: Dust’s Warming Counters Half of its Cooling Effect Dust that routinely rises above the world’s deserts causes a more significant localized warming effect than previously thought, a new study based on NASA field research shows. In April 2008, … Continue reading

Posted in Aerosols | Tagged , , , | 37 Comments