• This dataset is from the Northern Ireland (NI) DELTA® Gas and Aerosol Monitoring Network, and consists of monthly atmospheric concentrations of inorganic, water-soluble, reactive gases and aerosols measured with the UKCEH DELTA® method at 4 sites across NI for the years 2019 to 2020. (data.gov.uk)
  • Surface fluxes are binned by satellite-derived AOD value (e.g., high AOD and low AOD) to establish the relationship between aerosol concentrations and sensible heat flux (H) and latent heat flux (λE) partitioning. (confex.com)
  • The new and up to now unknown processes may be the reason why the atmospheric chemistry and physics of aerosol concentrations are often underestimated in models. (notrickszone.com)
  • Lower aerosol concentrations in Eemian ice compared to the Holocene are mainly due to shortened atmospheric residence time, while emissions changed little. (lu.se)
  • This dataset provides information on greenhouse gases and human-produced air pollution, including atmospheric concentrations of carbon dioxide (CO2), methane (CH4), tropospheric ozone (O3) and black carbon (BC) aerosols, collected during airborne campaigns conducted by NASA's Atmospheric Tomography (ATom) mission. (nasa.gov)
  • In addition to aerosol optical properties, between 2002-2006 a scanning humidograph system was operated, and inorganic ion and total aerosol mass concentrations were obtained from filter measurements. (copernicus.org)
  • Atmospheric potential gradient is a consequence of charge carried to the ionosphere through thunderstorms, and its value depends on highly electrically mobile ion concentrations, hence local conductivity of the air. (bris.ac.uk)
  • The technique is particularly appropriate for situations where aerosol concentrations are changing on a timescale of 1 s or faster. (wikipedia.org)
  • Quantification of aerosol climate and health effects requires a detailed knowledge of aerosol concentrations, chemical and physical properties, and atmospheric lifetimes. (psi.ch)
  • Mass concentrations, mass size distributions, time series, and diel variations for organic tracers and major inorganic ions in aerosols from K-puszta, Hungary, during a 2003 summer period are reported. (uantwerpen.be)
  • Paradoxically, the most pronounced feature in aerosol-induced surface temperature is an east-west dipole anomaly with strong cooling over the Caspian Sea and warming over central and northeastern Asia, where aerosol concentrations are low. (nasa.gov)
  • In atmospheric lidar applications we use the DIAL (DIfferential Absorption Lidar) technique to measure concentrations and fluxes of pollutants. (lu.se)
  • The trace metal dissolution kinetics of three rural atmospheric aerosols in a range of natural fresh water types. (lancs.ac.uk)
  • The dissolution kinetics of Pb, Zn and Cu from three rural atmospheric aerosols were studied in a range of natural fresh waters and a synthetic analogue, employing two different experimental systems and analytical techniques (AAS and ASV). (lancs.ac.uk)
  • Although aliphatic amines have been detected in both urban and rural atmospheric aerosols, little is known about the chemistry leading to particle formation or the potential aerosol yields from reactions of gas-phase amines. (copernicus.org)
  • Algorithms have been developed using a variety of satellite instruments to use these measurements to quantify the amount and sometimes the type of aerosols in the atmosphere. (databasefootball.com)
  • These had not been used widely for aerosol monitoring over land before, mainly because they lack measurements at several of the main wavelengths used for monitoring aerosols over land and their digitization (for the earlier members of the series) meant that the data could be noisy. (databasefootball.com)
  • These merged data products were derived by combining the NSF/NCAR G-V aircraft state parameters for position, time, temperature, pressure, and wind speed with meteorological, atmospheric chemistry and aerosol measurements made by several teams of investigators. (ucar.edu)
  • This platform can be expanded to enable other atmospheric measurements from a number of sensors. (aaqr.org)
  • This project will make PILS (Particle-into-Liquid Sampler) measurements on the AEROMMA WP-3 NOAA aircraft to provide aerosol composition data for the AEROMMA Campaign. (noaa.gov)
  • These measurements will provide high chemical specificity of sulfur species to complement other aerosol composition measurements to be deployed, such as aerosol mass spectrometry, and will be used to address the following research questions: (1) What are the differences in the type of sulfate observed in urban vs. marine emissions? (noaa.gov)
  • Between April 2002 and June 2017, the Global Monitoring Laboratory (GML) of the National Oceanic and Atmospheric Administration (NOAA) made continuous measurements of a suite of in situ aerosol optical properties at a long-term monitoring site near Trinidad Head (THD), California. (copernicus.org)
  • Comparison of the THD aerosol climatology to that reported for other marine sites shows that the location is representative of clean marine measurements, even with the periodic influence of anthropogenic sources. (copernicus.org)
  • This method, while complementary to the Langley approach, uses consistency between the direct normal and diffuse horizontal measurements combined with a regression technique to simultaneously retrieve daily time series of column mean aerosol particle size, aerosol optical depth, NO 2 , and ozone amounts along with the instrument's calibration constants. (nasa.gov)
  • Ions attach to aerosol in the atmosphere, reducing their mobility and therefore increasing the potential gradient, and so potential gradient measurements have been suggested as a proxy for aerosol measurements. (bris.ac.uk)
  • This dataset contains chemical and optical measurements of PM2.5 aerosols collected in Singapore. (ntu.edu.sg)
  • Remote Sensing of Atmospheric Aerosols and Trace Gases by Means of Multifilter Rotating Shadowband Radiometer. (nasa.gov)
  • Alexandrov, M. D. , A. Lacis , B. E. Carlson , and B. Cairns (2002), Remote Sensing of Atmospheric Aerosols and Trace Gases by Means of Multifilter Rotating Shadowband Radiometer. (nasa.gov)
  • They are familiar with the most important variables and measurement techniques related to aerosols, clouds, and reactive trace gases, including their advantages and limitations. (actris.net)
  • Organic aerosols directly emitted from wood and pellet stove combustion are found to chemically transform (approximately 15 %-35 % by mass) under daytime aging conditions simulated in an environmental chamber. (copernicus.org)
  • The environmental sources of microbial aerosols and processes by which they are emitted into the atmosphere are not well characterized. (nature.com)
  • From these data, we estimate each fire aerosolized an average of 7 ± 4 × 10 9 cells and 2 ± 1 × 10 8 biological INPs per m 2 burned and conclude that emissions from wildland fire are sources of viable microbial aerosols to the atmosphere. (nature.com)
  • While the word 'aerosol' conjures up images of spray cans, to atmospheric scientists the term refers to something different: small particles suspended in the atmosphere, often many times smaller than the width of a human hair. (databasefootball.com)
  • The paper's abstract underscores that major gaps exist in the understanding of the physicochemical pathways that lead to aerosol growth in the atmosphere and that these pathways need to be considered by models. (notrickszone.com)
  • The Leibniz press release adds that aerosol particles in the atmosphere influence global climate because they reflect sunlight. (notrickszone.com)
  • Human activity is throwing up lots of aerosols (industry, agriculture, transportation, etc.) into the atmosphere and so are contributing to blocked sunlight. (notrickszone.com)
  • I think the main area of uncertainty in the Svensmark Hypothesis is how to get from the small aerosols initiated by muons (from the particl shower when a cosmic ray hits the upper atmosphere) to a size big enough to be a cloud condensation nucleus. (notrickszone.com)
  • The objective of this research is to estimate aerosol effects on radiative transfer through the atmosphere, particularly the contribution due to coastal surf-generated aerosol, and will include the characterization and measurement of marine aerosols, especially in coastal regions. (dtic.mil)
  • ATom deploys an extensive gas and aerosol payload on the NASA DC-8 aircraft for systematic, global-scale sampling of the atmosphere, profiling continuously from 0.2 to 12 km altitude. (nasa.gov)
  • Limited understanding of the production and loss of organic aerosol (OA) to the atmosphere has resulted in poorly constrained source estimates ranging from 140 to 910 TgCyr−1 [Goldstein and Galbally, 2007]. (nasa.gov)
  • Aerosols of industrial pollutants that contain sulphates and nitrates cause a cooling effect in the atmosphere as they reflect the incoming radiation, countering the warming effect of greenhouse gases. (researchmatters.in)
  • the course is organized by University of Helsinki, Institute of Atmospheric and Earth System Research (INAR) and ATM-MP Master Program, within the framework of the European research infrastructure ACTRIS and in collaboration with iLEAPS, PEEX, ATM-DP Doctoral Program, the Nordic Graduate School "Biosphere-Carbon-Aerosol-Cloud-Climate Interactions" (CBACCI) and Nordic Master's Degree Program "Atmosphere-Biosphere-Studies" (ABS). (actris.net)
  • The objectives of this study were to determine if wildland fire smoke is an atmospheric source of viable microbes and biological INPs and estimate the scale of their emissions. (nature.com)
  • Aerosols can be natural or anthropogenic (the result of human activities), and include substances such as mineral dust (blown from deserts or bare soil by the wind), smoke (from wildfires as well as intentional burning), ash and sulphate from volcanic eruptions and degassing, sea spray, haze from industrial activities or vegetation emissions, and more. (databasefootball.com)
  • Rapid climate changes during the glacial have little effect on terrestrial biogenic aerosol emissions. (lu.se)
  • Glacial sea salt aerosol emissions in the North Atlantic region increase only moderately (50%), likely due to sea ice expansion. (lu.se)
  • Here we decouple source and processing effects through experiments on aerosol formation and aging using model compounds (e.g. glyoxal and alpha-pinene), selected sources (e.g. vehicle and cooking emissions), and ambient particles. (psi.ch)
  • Infrared spectroscopy is a cost-effective measurement technique to characterize chemical composition of organic aerosol emissions. (copernicus.org)
  • Natural sources of atmospheric vanadium include continental dust, marine aerosol, and volcanic emissions. (cdc.gov)
  • Accurate characterization of the electrical charging of the aerosol is therefore an essential component of device design. (wikipedia.org)
  • While the aerosol mass spectrometer provides high-time-resolution characterization of the overall extent of oxidation, the extensive fragmentation of molecules and specificity of the technique have posed challenges toward deeper understanding of molecular structures in aerosols. (copernicus.org)
  • Fast Response Classification of Fine Aerosols with a Differential Mobility Spectrometer" (PDF). (wikipedia.org)
  • This presentation summarizes science gaps associated with (1) the evolution and structure of ARs including cloud and precipitation processes and air-sea interaction, and (2) aerosol interaction with ARs and the impact on precipitation, including locally-generated aerosol effects on orographic precipitation along the U.S. West Coast. (confex.com)
  • Despite their impacts, the processes that are responsible for the creation and growth of these particles are among the least understood fields of atmospheric science. (notrickszone.com)
  • This research involves analysis of the aerosol data, specifically the total extinction coefficient, collected during CASPER Coupled Air Sea Processes and Electromagnetic Ducting Research-East from various sensors deployed off the coast of Duck, North Carolina, from 9 October 2015 to 6 November 2015. (dtic.mil)
  • Reactive conditions simulating atmospheric oxidation processes are controlled in parallel experiments using a stationary smogchamber, mobile smogchamber, and portable flow reactor. (psi.ch)
  • ACTRIS is the pan-European research infrastructure producing high-quality data and information on short-lived atmospheric constituents and on the processes leading to the variability of these constituents in natural and controlled atmospheres. (actris.net)
  • Analyses of circulation anomalies show that the dipole anomaly is a part of an atmospheric teleconnection pattern driven by atmospheric heating anomalies induced by absorbing aerosols in the source regions, but the influence was conveyed globally through barotropic energy dispersion and sustained by feedback processes associated with the regional circulations. (nasa.gov)
  • Secondary aerosol (SA) in East Asia exhibits complex features of condensation, evaporation, and chemical reactions due to the existence of large condensation and coagulation sinks (Kulmala et al . (aaqr.org)
  • Emphasis was placed on á-/â-pinene secondary organic aerosol (SOA) tracers comprising cis-pinic acid, 3-hydroxyglutaric acid, and 3-methyl-1,2,3-butanetricarboxylic acid. (uantwerpen.be)
  • We use a model (GEOS‐Chem) to remove the contribution of inorganic aerosol, dust and soot from the observed AOD and derive a continental OA production of 150 TgCyr−1 (equivalent burden of 2.5 TgC), with 80% uncertainty. (nasa.gov)
  • In this study, we test the hypothesis that chemistry of snow, wet deposition, and aerosols can be used as a surrogate for dust deposition to snow. (usgs.gov)
  • Spatial patterns in chemistry of snow, wet deposition, and aerosols indicate that dust deposition increases from north to south in the Rocky Mountains, and temporal trends indicate that winter/spring dust deposition increased by 81% in the southern Rockies during 1993-2014. (usgs.gov)
  • The authors find that anomalous atmospheric heat sources induced by absorbing aerosols (dust and black carbon) excite a planetary-scale teleconnection pattern in sea level pressure, temperature, and geopotential height spanning North Africa through Eurasia to the North Pacific. (nasa.gov)
  • Significant atmospheric heating is found in regions with large loading of dust (over northern Africa and the Middle East) and black carbon (over Southeast Asia). (nasa.gov)
  • NPF is associated with significant increase in the number concentration of nanoparticles (i.e., nucleation burst), and has been identified under various atmospheric conditions over East Asia. (aaqr.org)
  • A second is the presence of clouds, which must be distinguished from aerosols, and block the view of aerosols and the surface below them. (databasefootball.com)
  • According to a Leibniz Institute for Tropospheric Research press release , light causes the aerosols to grow in size and have an impact on clouds and climate. (notrickszone.com)
  • The cycling of atmospheric aerosols through clouds can change their chemical and physical properties and thus modify how aerosols affect cloud microphysics and, subsequently, precipitation and climate. (uni-bielefeld.de)
  • Current knowledge about aerosol processing by clouds is rather limited to chemical reactions within water droplets in warm low-altitude clouds. (uni-bielefeld.de)
  • However, in cold high-altitude cirrus clouds and anvils of high convective clouds in the tropics and midlatitudes, humidified aerosols freeze to form ice, which upon exposure to subsaturation conditions with respect to ice can sublimate, leaving behind residual modified aerosols. (uni-bielefeld.de)
  • Using a combination of satellite and radiosonde data, we show that highly porous aerosol formation can readily occur in highly convective clouds, which are widespread in the tropics and midlatitudes. (uni-bielefeld.de)
  • Formation of highly porous aerosol particles by atmospheric freeze-drying in ice clouds", Proceedings of the National Academy of Sciences , vol. 110, 2013, pp. 20414-20419. (uni-bielefeld.de)
  • Anthropogenic Aerosol Indirect Effects in Cirrus Clouds. (uni-bielefeld.de)
  • The direct effects of aerosols on global and regional climate during boreal spring are investigated based on numerical simulations with the NASA Global Modeling and Assimilation Office finite-volume general circulation model (fvGCM) with Microphyics of Clouds with the Relaxed-Arakawa Schubert Scheme (McRAS), using aerosol forcing functions derived from the Goddard Ozone Chemistry Aerosol Radiation and Transport model (GOCART). (nasa.gov)
  • The science of climate and climate change involves study of the interaction between clouds, atmospheric radiation and aerosol particles. (lu.se)
  • Atmospheric aerosols scatter and potentially absorb incoming solar radiation, thereby reducing the total amount of radiation reaching the surface and increasing the fraction that is diffuse. (confex.com)
  • Depending on the composition, aerosols scatter or absorb Sun's radiation, and thus affect Earth's energy budget. (researchmatters.in)
  • We find that highly porous aerosol particles scatter solar light less efficiently than nonporous aerosol particles. (uni-bielefeld.de)
  • Hazardous anthropogenic aerosol particles constitute a major pollution component and cause a direct risk factor. (lu.se)
  • abstract = "Inland sources of particulate chloride for atmospheric nitryl chloride (ClNO2) formation remain unknown and unquantified, hindering air quality assessments. (psu.edu)
  • Atmospheric Teleconnection over Eurasia Induced by Aerosol Radiative Forcing. (nasa.gov)
  • DOE's Atmospheric Radiation Measurement (ARM) program and NOAA are coordinating on deployment of airborne and ship-borne facilities for this period, including a DOE-sponsored study called ACAPEX (ARM Cloud Aerosol and Precipitation Experiment) that was proposed in the context of CalWater 2. (confex.com)
  • Electrical aerosol spectrometry (EAS) is a technique for measurement of the number-size distribution of aerosol using a combination of electrical charging and multiple solid state electrometer detectors. (wikipedia.org)
  • Applications include the measurement of engine exhaust, cigarette smoke, and ambient/atmospheric studies. (wikipedia.org)
  • In the figure below, the part of the extinction coefficient that originates from aerosol particles is shown as a function of height and time for one measurement performed in a rural part of Sweden and one in an urban part of China. (lu.se)
  • Here we simulate an atmospheric freeze-drying cycle of aerosols in laboratory experiments using proxies for atmospheric aerosols. (uni-bielefeld.de)
  • Future work includes evaluating the stability and potential interference of multiple organic sulfur compounds in laboratory mixtures and ambient aerosol. (copernicus.org)
  • In a recent project, laboratory observations of a new type of fragmentation involving freezing raindrops were done, enabling its representation in atmospheric models. (lu.se)
  • There are multiple potential approaches, with stratospheric aerosol injection (SAI) being the most-studied method, followed by marine cloud brightening (MCB). (wikipedia.org)
  • It is estimated that the cooling impact from SAI would cease 1-3 years after the last aerosol injection, while the impact from marine cloud brightening would disappear in just 10 days. (wikipedia.org)
  • These observations may have implications for subsequent cloud formation cycles and aerosol albedo near cloud edges. (uni-bielefeld.de)
  • Each cloud droplet and each initial ice crystal is initiated by an aerosol particle. (lu.se)
  • The cloud properties are controlled by the aerosol conditions of the environment. (lu.se)
  • Primary biological aerosol particle (PBAPs) have a distinctive role because they initiate both cloud droplets and, at remarkably warm sub-zero temperatures, ice crystals. (lu.se)
  • Aerosol particles are used within nanotechnology (for instance solar cells), in health care (for instance the Turbuhaler®), but also have adverse health effects during deposition in our lungs and affect climate through the reflection and absorption of solar light and through cloud formation. (lu.se)
  • They now plan to apply their new algorithms to the full AVHRR records and merge them with MODIS and other advanced sensor records, more than doubling the available length of Deep Blue data sets and improving our understanding of how and where the Earth's aerosol burden has been changing. (databasefootball.com)
  • Hvidtfeldt et al observed an association between residential exposure to fine atmospheric particulate matter, including black carbon, and the development of non-Hodgkin lymphoma in children. (medscape.com)
  • The combustion in industries also consists of PM2.5 aerosols, which has large portions of toxic metals and volatile organic carbons, which are extremely harmful to human health. (researchmatters.in)
  • Two sources of environmental data were used as input to the surfacing algorithm, US Environmental Protection Agency (EPA) Air Quality System (AQS) PM2.5 in-situ data and National Aeronautics and Space Administration (NASA) Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth remotely sensed data. (cdc.gov)
  • Knut Deppert works as professor at Lund University in Sweden with the application of aerosol methods to generate novel nanomaterials and -devices. (lu.se)
  • The approach takes advantage of recent investments in new instrumentation, such as the new sophisticated instrumentation developed at UC San Diego to measure the chemical composition of nucleated aerosols, and also in observing systems, including HMT, the NASA Global Hawk, and relevant satellite and airborne remote sensing observing systems. (confex.com)
  • This study provides experimental evidence of the connection between road salt and air quality through the production of this important reservoir for nitrogen oxides and chlorine radicals, which significantly impact atmospheric composition and pollutant fates. (psu.edu)
  • The identification of road salt as a ClNO2 source links this common deicing practice to atmospheric composition and air quality in the urban wintertime environment. (psu.edu)
  • However, such quantification has proven extremely challenging, particularly for the organic fraction, because of spatial and temporal variability in the sources of aerosols and their precursor gaes, the complexity of particle composition, and uncertainties regarding the nature and timescales of atmospheric chemical processing of existing particles. (psi.ch)
  • In the nanometer range we encounter aerosols, their impact on the environment and public health greatly depend on their chemical composition and sizes. (lu.se)
  • This comprehensive dataset will be used to improve the representation of chemically reactive gases and short-lived climate forcers in global models of atmospheric chemistry and climate. (nasa.gov)
  • Atmospheric aerosols, tiny solid or liquid particles suspended in air, also called Particulate Matter (PM), are responsible for the myriad hues created by the evening sky. (researchmatters.in)
  • Here we use high-resolution aerosol records from the Greenland NEEM ice core to reconstruct the environmental alterations in aerosol source regions accompanying these changes. (lu.se)
  • The lidar technique has over many years developed to become an important method to measure the aerosol particle concentration with the help of the backscattered light. (lu.se)
  • What is generally shown when the aerosol particle concentration is measured with lidar is the extinction coefficient as a function of height. (lu.se)
  • Bryophytes (mosses) have long been used to determine the concentration of heavy metals as an alternative to the collection of atmospheric aerosols. (bvsalud.org)
  • Low-cost sensors for aerosol optical thickness, ozone, temperature, relative humidity, and pressure were combined with a low-cost computer (Raspberry Pi) for automated monitoring. (aaqr.org)
  • We find that attributing the mid‐visible continental aerosol optical depth (AOD) observed by the MISR satellite entirely to OA implies a global source of 430 TgCyr−1 of sub‐micron OA. (nasa.gov)
  • While the influences of local anthropogenic sources from vehicular and marine traffic are visible in the optical aerosol data, their influence is largely dictated by the wind direction at the site. (copernicus.org)
  • Rapid elemental analysis of aerosols using atmospheric glow discharge optical emission spectroscopy. (cdc.gov)
  • Vertical profile of atmospheric nanoparticle was observed at rural area in East Asia. (aaqr.org)
  • Aerosols: ammonium (NH4+), nitrate (NO3-), sulphate (SO42-), chloride (Cl-), sodium (Na+), calcium (Ca2+), Magnesium (Mg2+) The network is operated jointly by Agri-Food and Biosciences Institute (AFBI) and the UK Centre for Ecology & Hydrology (UKCEH), and funded by the Department of Agriculture, Environment and Rural Affairs (DAERA), Northern Ireland. (data.gov.uk)
  • Though subject to significant uncertainty, the calculated dissociation equilibrium constant for diethylammonium nitrate is found to be sufficiently small to allow for its atmospheric formation, even in the presence of ammonia which competes for available nitric acid. (copernicus.org)
  • Indoor Air: Ammonia can be released into indoor air as a liquid spray (aerosol) or as a vapor. (cdc.gov)
  • Agricultural: If ammonia is released into the air as a liquid spray (aerosol), it has the potential to contaminate agricultural products. (cdc.gov)
  • The latest gap is revealed by an experiment by an international team of scientists that shows evidence of a new mechanism where light causes atmospheric aerosols to increase in size. (notrickszone.com)
  • We designed and fabricated an aerosol collector with high collection efficiency that enables quantitative infrared spectroscopy analysis. (copernicus.org)
  • A combined analysis of these datasets demonstrates consistent patterns in aerosol climatology and highlights changes in sources throughout the year. (copernicus.org)
  • Here, we identify road salt aerosol as the primary chloride aerosol source, accounting for 80-100% of ClNO2 formation, at an inland urban area in the wintertime. (psu.edu)
  • One shortcoming to date has been that the types of instrument which can quantify aerosol loading over land robustly have only been flying since around the start of the 21st century. (databasefootball.com)
  • this can make it difficult to definitively characterize the natural marine aerosol. (copernicus.org)
  • Liu, X. , Easter, C. , Ghan, S. J. , (2012). Toward a minimal representation of aerosols in climate models: Description and evaluation in the Community Atmospheric Model CAM5 , Geosci. (dri.edu)
  • All amines studied form aerosol when photooxidized in the presence of NO x with the majority of the aerosol mass present at the peak of aerosol growth consisting of aminium (R 3 NH + ) nitrate salts, which repartition back to the gas phase as the parent amine is consumed. (copernicus.org)
  • The non-salt organic aerosol formed appears to be more stable than the nitrate salts and does not quickly repartition back to the gas phase. (copernicus.org)
  • Find news and information on the latest results, outcomes and upcoming events in the domain of short-lived atmospheric constituents. (actris.net)
  • A number of atmospheric constituents can influence our health or economy. (lu.se)
  • This can be used to classify aerosols and distinguish harmful particles from, e.g., natural constituents such as moisture. (lu.se)
  • Crippa, P. and Pryor, S. C. (2013), Spatial and temporal scales of new particle formation events in eastern North America, Atmospheric Environment, 75, 257-264. (nd.edu)
  • EOL data archive -- HIPPO-3 Merged 1-second Meteorology, Atmospheric Chemistry, and Aerosol Data [Wofsy, et. (ucar.edu)