Sentences with phrase «aerosols impact clouds»
New research reveals insights into how black carbon aerosols impact cloud formation RENO — It is widely known that black carbon, or soot, aerosol particles emitted... Read more
http://www.dri.edu/ Not exact matches
She decided to study the role that organic particles play in cloud droplet formation, because a large proportion of marine aerosols — which have a significant climate impact — are organics.
«Tiny particles have outsize impact on storm clouds, precipitation: Amazon rainforest provides a unique natural lab to study effects of aerosols.»
They conducted nine separate analyses, which spanned 2003 to 2014 and covered all of China, to compare the impact of aerosols compared to clouds on solar power generation with and without technology that tracks the sun as it moves across the sky.
«Huge amounts of aerosols from Asia go as high as six miles up in the atmosphere and these have an unmistakable impact on cloud formations and weather.»
This mission is fulfilled by operating atmospheric observatories around the world that collect massive amounts of atmospheric measurements to provide data products that help scientists study the effects and interactions of clouds and aerosols and their impact on the earth's energy balance.
The ARM Facility has provided the world's atmospheric scientists with continuous observations of cloud and aerosol properties and their impacts on the Earth's energy balance for more than 20 years.
Microphysical effects determine macrophysical response for aerosol impacts on deep convective clouds, Proc Natl Acad Sci U S A, Early Edition online the week of November 11 - 15, 2013, DOI: 10.1073 / pnas.1316830110.
Most complete dataset ever collected helps scientists understand aerosols» impacts on clouds
Much of this uncertainty is due to the complexity of aerosols and their interactions with and impacts on cloud processes and properties, as well as the wide range of scales on which these interactions occur.
Because small - scale climate features, such as clouds and atmospheric aerosol particles, have a large impact on global climate, it's important to improve the methods used to represent those climate features in the models.
He is particularly interested in the role of aerosols and clouds in the atmosphere, and has worked on the processes that describe these components of the atmosphere, the computational details that are needed to describe them in computer models, and on their impact on climate.
The ARM data will provide more detailed measurements of both aerosols and clouds to assist the research team in quantifying the impacts of aerosols on precipitation under a variety of atmospheric and pollution conditions.
Within the integrated Earth system science paradigm, our major research thrusts include the physics and chemistry of aerosols, clouds and precipitation; integrating our understanding of climate, energy, and other human and natural systems through the development and application of models that span a wide range of spatial scales; and determining the impacts of and informing responses to climate and other global and regional environmental changes.
From its base in Namibia, the Observations of Clouds above Aerosols and their Interactions (ORACLES) study will use airborne instruments this fall to probe the impact on climate and rainfall of the interaction between clouds over the southeastern Atlantic Ocean and smoke from vegetation burning in southern Africa.
c) anthropogenic aerosols — mainly sulfate and nitrate (from emissions of SO2 and NOx / NH3) have a strong direct effect and undoubted liquid cloud nucleation impacts (the indirect effects).
Similarly, we have not been able to tell how much of the aerosol is capable of interacting with liquid or ice clouds (which depends on the different aerosols» affinity for water), and that impacts our assessment of the aerosol indirect effect.
Sulfate aerosol is a health hazard, limits visibility, degrades buildings, reflects solar radiation (cooling the climate) and also impacts cloud properties (increasing their lifetime and reducing rainfall).
To make such statements wouldn't we have to know the 3 - D dust field in the LGM and the impact of those aerosols on clouds (and planetary albedo)?
While many albedo - modification techniques have been proposed, the committee said two strategies that could potentially have a significant impact are injection of aerosols into the stratosphere and marine cloud brightening.
Since the true impacts of longer term natural variability are not known and the one confidence estimates of aerosol and cloud forcings used to tune the models to that «range of comfort» are quite a bit more uncertain that previously considered, that it might just be time for a do over.
Now, since the cloud / aerosols issue has reared its ugly head, internal ocean dynamics also can have a profound impact on climate.
The long - term impacts of aerosols on the vertical development of clouds and precipitation.
The meeting will mainly cover the following themes, but can include other topics related to understanding and modelling the atmosphere: ● Surface drag and momentum transport: orographic drag, convective momentum transport ● Processes relevant for polar prediction: stable boundary layers, mixed - phase clouds ● Shallow and deep convection: stochasticity, scale - awareness, organization, grey zone issues ● Clouds and circulation feedbacks: boundary - layer clouds, CFMIP, cirrus ● Microphysics and aerosol - cloud interactions: microphysical observations, parameterization, process studies on aerosol - cloud interactions ● Radiation: circulation coupling; interaction between radiation and clouds ● Land - atmosphere interactions: Role of land processes (snow, soil moisture, soil temperature, and vegetation) in sub-seasonal to seasonal (S2S) prediction ● Physics - dynamics coupling: numerical methods, scale - separation and grey - zone, thermodynamic consistency ● Next generation model development: the challenge of exascale, dynamical core developments, regional refinement, super-parametrization ● High Impact and Extreme Weather: role of convective scale models; ensembles; relevant challenges for model development
DMS is the primary source in the sulfate mass budget over the remote ocean west of 80 ° W. • The first aerosol indirect effect has been observationally quantified over the SEP, with cloud thinning of the more polluted coastal clouds mitigating the overall radiative impact.
There is a lot we do not know about cloud - aerosol interaction and that impacts what we do not know about climate sensitivity.
paper refers to a new model which makes it possible to study the globally impacts of aerosols on warm clouds (T > 0 ° C) thanks to a much higher resolution than former approaches.
This could mean that the impact of aerosols on clouds (which would generate such a pattern) is much lower than thought.
I have devoted 30 years to conducting research on topics including climate feedback processes in the Arctic, energy exchange between the ocean and atmosphere, the role of clouds and aerosols in the climate system, and the impact of climate change on the characteristics of tropical cyclones.
«Long - term impacts of aerosols on the vertical development of clouds and precipitation.»
28 29 7.4.5.2 Physical Mechanisms Linking Cosmic Rays to Cloudiness 30 31 The most widely studied mechanism proposed to explain the possible link between GCR and cloudiness is 32 the «ion - aerosol clear air» mechanism, in which atmospheric ions produced by GCR facilitate aerosol 33 nucleation and growth ultimately impacting CCN concentrations and cloud properties (Carslaw et al., 2002; 34 Usoskin and Kovaltsov, 2008).
«Aerosol impacts on drizzle properties in warm clouds from ARM Mobile Facility maritime and continental deployments.»
The most widely studied mechanism proposed to explain the possible link between GCR and cloudiness is the «ion - aerosol clear air» mechanism, in which atmospheric ions produced by GCR facilitate aerosol nucleation and growth ultimately impacting CCN concentrations and cloud properties (Carslaw et al., 2002; http://www.sciencemag.org/content/298/5599/1732.abstract
A five - year investigation, ORACLES is examining the impact aerosols from biomass burning in southern Africa has on climate as it mixes with clouds over the southeast Atlantic Ocean.
«Evidence for climate change in the satellite cloud record» «Cloud feedback mechanisms and their representation in global climate models» «A net decrease in the Earth's cloud, aerosol, and surface 340 nm reflectivity during the past 33 yr (1979 — 2011)» «New observational evidence for a positive cloud feedback that amplifies the Atlantic Multidecadal Oscillation» «Impact of dataset choice on calculations of the short - term cloud feedback&rcloud record» «Cloud feedback mechanisms and their representation in global climate models» «A net decrease in the Earth's cloud, aerosol, and surface 340 nm reflectivity during the past 33 yr (1979 — 2011)» «New observational evidence for a positive cloud feedback that amplifies the Atlantic Multidecadal Oscillation» «Impact of dataset choice on calculations of the short - term cloud feedback&rCloud feedback mechanisms and their representation in global climate models» «A net decrease in the Earth's cloud, aerosol, and surface 340 nm reflectivity during the past 33 yr (1979 — 2011)» «New observational evidence for a positive cloud feedback that amplifies the Atlantic Multidecadal Oscillation» «Impact of dataset choice on calculations of the short - term cloud feedback&rcloud, aerosol, and surface 340 nm reflectivity during the past 33 yr (1979 — 2011)» «New observational evidence for a positive cloud feedback that amplifies the Atlantic Multidecadal Oscillation» «Impact of dataset choice on calculations of the short - term cloud feedback&rcloud feedback that amplifies the Atlantic Multidecadal Oscillation» «Impact of dataset choice on calculations of the short - term cloud feedback&rcloud feedback»
According to Prather, the studies have given researchers a newfound understanding of the significance of the complicated relationships between the microbes that can be found in seawater and their impact in the composition and the ability to form clouds of sea spray aerosol.
Global and regional impacts of HONO on the chemical composition of clouds and aerosols.
Aerosol collections on the NOAA Ron Brown for subsequent processing of INP activation temperature spectra and composition analyses, add a valuable measurement to the ACAPEX and related CalWater2 (NOAA) studies for use in parameterizing and modeling the impacts of marine boundary layer and other aerosols on climate and radiation via aerosol - indirect effects on mixed phase Aerosol collections on the NOAA Ron Brown for subsequent processing of INP activation temperature spectra and composition analyses, add a valuable measurement to the ACAPEX and related CalWater2 (NOAA) studies for use in parameterizing and modeling the impacts of marine boundary layer and other aerosols on climate and radiation via aerosol - indirect effects on mixed phase aerosol - indirect effects on mixed phase clouds.
[~ 17 model years](Motivation: Variation in the climate response across models will be a function of (a) different climate sensitivity in the GCMs, (b) different impact of aerosols on climate (due to location with respect to clouds, water uptake, natural aerosols, mixing, etc), and (c) different 3D constituent fields from the composition models.
25 Uncertainties Changes in atmospheric water vapor — Changes in cloudiness — Changes in albedo Carbon budgets Aerosol particles — Direct effects — Impact on clouds — Black carbon
effects of aerosols on cloud properties (including cloud fraction, cloud microphysical parameters, and precipitation efficiency), which may modify the hydrological cycle without significant radiative impacts;
It has been hypothesized that galactic cosmic rays (GCR) create atmospheric ions which facilitates aerosol nucleation and new particle formation with a further impact on the cloud formation (Kazil et al., 2012; Pierce and Adams, 2009).
The ARM Facility has provided the world's atmospheric scientists with continuous observations of cloud and aerosol properties and their impacts on the Earth's energy balance for more than 20 years.
This mission is fulfilled by operating atmospheric observatories around the world that collect massive amounts of atmospheric measurements to provide data products that help scientists study the effects and interactions of clouds and aerosols and their impact on the earth's energy balance.
Volcanic aerosols scatter as well as reflect, impact cloud water droplet size and have a stronger impact in day than night and greater impact in the northern hemisphere than the southern hemisphere on surface air temperatures.
Menon, S., and A.D. Del Genio, 2007: Evaluating the impacts of carbonaceous aerosols on clouds and climate.
Interactions with the hydrological cycle, and additional impacts on the radiation budget, occur through the role of aerosols in cloud microphysical processes, as aerosol particles act as cloud condensation nuclei (CCN) and ice nuclei (IN).
The suite of possible impacts of aerosols through the modification of cloud properties is called «indirect effects».
The direct RF of sulphate and of soot aerosols was likewise quantified along with that of contrails, but the impact on cirrus clouds that are sometimes generated downwind of contrails was not.
The forcing aspect of the indirect effect at the top of the atmosphere is discussed in Chapter 2, while the processes that involve feedbacks or interactions, like the «cloud lifetime effect» [6], the «semi-direct effect» and aerosol impacts on the large - scale circulation, convection, the biosphere through nutrient supply and the carbon cycle, are discussed here.