4031eddf-2472-4a33-b2f2-0f3c8e3964c2 eng 8b9c2992-728f-4618-9116-6f322c99a0b2 Institute for Atmospheric Sciences and Climate - National Research Council of Italy +39 051 6399597 +39 051 6399590 Via Gobetti 101 Bologna BO 40129 Italy a.marinoni@isac.cnr.it www.isac.cnr.it/cimone 2012-01-23T17:07:53 ISO 19115:2003/19139 1.0 1 WGS 1984 EPSG 7.4 Aerosol scattering coefficient 2011-04-05T03:00:00 A M9003 integrating nephelometer (ECOTECH) measures the aerosol scattering coefficient at 525 nm since May 2007. Ambient aerosol particles play an important role in the overall energy balance of the atmosphere by scattering and absorbing incoming and outgoing solar and terrestrial radiation (the “direct effect”) and by modifying microphysical properties of clouds (the “indirect effects”) through their role as cloud condensation nuclei. The determination of the direct effects of aerosols on the earth radiation balance requires quantitative information on the optical properties of atmospheric aerosols. Through scattering and absorption of solar radiation, aerosols can cool or warm the Earth’s atmosphere and alter the climate. Measuring the scattering variability is a try to understand how the aerosol optical properties vary with time, season and long range transport of pollutants. Moreover, information on the extinction coefficient, which is related to visibility in the atmosphere, is also an important parameter in global climate models. In general, the interaction of a scattering and absorbing aerosol with the radiative flux at various levels in the atmosphere could change the albedo of the earth and the temperature profile of the atmosphere: pure scattering will increase the albedo of the earth and reduce the amount of solar radiation incident on the earth, causing a net cooling of the earth-atmosphere system, while absorption of solar and terrestrial radiation by particles could cause a greenhouse effect near the earth's surface. Uncertainty on the aerosol effect on global radiative forcing is still very high, as also reported by the Intergovernmental Panel on Climate Change. The objective of this measurement program is to determine the variability of aerosol scattering coefficient at ICO-OV in relation to air mass origins, and to derive information to describe the most common conditions observed at ICO-OV. In addition, observed values of the scattering coefficient, combined with absorption, can be used to estimate the direct aerosol radiative forcing for the region. Paolo Bonasoni National Research Council (CNR – Consiglio Nazionale delle Ricerche). Institute for Atmospheric Science and Climate (ISAC – Istituto di Scienze dell’Atmosfera e del Clima) +39 0516399590 +39 0516399652 via Gobetti, 101 Bologna BO 40129 Italy p.bonasoni@isac.cnr.it Angela Marinoni National Research Council (CNR – Consiglio Nazionale delle Ricerche). Institute for Atmospheric Science and Climate (ISAC – Istituto di Scienze dell’Atmosfera e del Clima) +39 0516399597 +39 0516399652 via Gobetti, 101 Bologna BO 40129 Italy a.marinoni@isac.cnr.it https://geoportal.mountaingenius.org/geonetwork/srv/eng/resources.get?uuid=4031eddf-2472-4a33-b2f2-0f3c8e3964c2&fname=MntCimone_s.png thumbnail png https://geoportal.mountaingenius.org/geonetwork/srv/eng/resources.get?uuid=4031eddf-2472-4a33-b2f2-0f3c8e3964c2&fname=MntCimone.png large_thumbnail png Aerosol Scattering coefficient Apennines High Altitude SHARE Nephelometer Station Network GAW No conditions apply climatologyMeteorologyAtmosphere 6.62397 18.5144 36.6492 47.0946 http://isac.cnr.it/cimone WWW:LINK-1.0-http--link Mt. Cimone website Official website of the Mount Cimone Station - Italian Climate Observatory "Ottavio Vittori" http://ebas.nilu.no WWW:LINK-1.0-http--link EBAS Website Official website of EBAS -EBAS is a database hosting observation data of atmospheric chemical composition and physical properties. EBAS hosts data submitted by data originators in support of a number of national and international programs ranging from monitoring activities to research projects. EBAS is developed and operated by the Norwegian Institute for Air Research (NILU). http://ebas.nilu.no WWW:LINK-1.0-http--link GAW-WDCA Website EBAS hosts the World Data Centre for Aerosol (WDCA) of the Global Atmosphere Watch (GAW) https://geoportal.mountaingenius.org/geoserver/wms OGC:WMS-1.1.1-http-get-capabilities gn:share show map https://geoportal.mountaingenius.org/webapp/srv/en/resources.get?id=305&fname=gaw143_measurementguide.pdf&access=private WWW:DOWNLOAD-1.0-http--download gaw143_measurementguide.pdf In-situ Measurements of Aerosol Radiative Properties https://geoportal.mountaingenius.org/webapp/srv/en/resources.get?id=305&fname=gaw153.pdf&access=private WWW:DOWNLOAD-1.0-http--download gaw153.pdf AEROSOL MEASUREMENT PROCEDURES GUIDELINES AND RECOMMENDATIONS http://ebas.nilu.no/Pages/DataSetList.aspx?key=36AFD6108A0F42DE940267D766E55425 WWW:LINK-1.0-http--partners databases WMO - GAW - WDCA / EUSAAR - EBAS time resolution time resolution The time resolution of the records of aerosol optical variables should allow generation of hourly statistics, preferably from integrals taken over 1 to 3 minute periods. These should include arithmetic mean and standard deviation, median, 5%ile, and 95%ile values for each hour. Quality control of data is the responsibility of each observing station, data known to be contaminated or otherwise corrupted should be flagged. true The station is equipped to perform continuous measurements of optical (absorption and scattering coefficients) properties of aerosol. No conditions apply 2011-03-31