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Discussion papers
https://doi.org/10.5194/amt-2019-499
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-2019-499
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 11 Feb 2020

Submitted as: research article | 11 Feb 2020

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This preprint is currently under review for the journal AMT.

A global analysis of climate-relevant aerosol properties retrieved from the network of GAW near-surface observatories

Paolo Laj1,2,3, Alessandro Bigi4, Clémence Rose5, Elisabeth Andrews6,7, Cathrine Lund Myhre8, Martine Collaud Coen9, Alfred Wiedensohler10, Michael Schultz11, John A. Ogren7, Markus Fiebig8, Jonas Gliß11, Augustin Mortier11, Marco Pandolfi12, Tuukka Petäjä3, Sang-Woo Kim13, Wenche Aas8, Jean-Phillipe Putaud14, Olga Mayol-Bracero15, Melita Keywood16, Lorenzo Labrador17, Pasi Aalto3, Erik Ahlberg18, Lucas Alados Arboledas19,20, Andrés Alastuey12, Marcos Andrade21, Begoña Artíñano22, Stina Ausmeel18, Todor Arsov23, Eija Asmi24, John Backman24, Urs Baltensperger25, Susanne Bastian26, Olaf Bath27, Johan Paul Beukes28, Benjamin T. Brem25, Nicolas Bukowiecki29, Sébastien Conil30, Cedric Couret27, Derek Day31, Wan Dayantolis32, Anna Degorska33, Sebastiao Martins Dos Santos14, Konstantinos Eleftheriadis34, Prodromos Fetfatzis34, Olivier Favez35, Harald Flentje36, Maria I. Gini34, Asta Gregorič37, Martin Gysel-Beer25, Gannet A. Hallar38, Jenny Hand31, Andras Hoffer39, Christoph Hueglin40, Rakesh K. Hooda24,41, Antti Hyvärinen24, Ivo Kalapov23, Nikos Kalivitis42, Anne Kasper-Giebl43, Jeong Eun Kim44, Giorgos Kouvarakis42, Irena Kranjc45, Radovan Krejci46, Markku Kulmala3, Casper Labuschagne47, Hae-Jung Lee44,a, Heikki Lihavainen24, Neng-Huei Lin48, Gunter Löschau26, Krista Luoma3, Angela Marinoni2, Frank Meinhardt27, Maik Merkel10, Jean-Marc Metzger49, Nikolaos Mihalopoulos42,50, Nhat Anh Nguyen51, Jakub Ondracek52, Noemi Peréz12, Maria Rita Perrone53, Jean-Eudes Petit54, David Picard5, Jean-Marc Pichon5, Véronique Pont55, Natalia Prats21, Anthony Prenni56, Fabienne Reisen16, Salvatore Romano53, Karine Sellegri5, Sangeeta Sharma57, Gerhard Schauer43, Patrick Sheridan7, James Patrick Sherman58, Maik Schütze27, Andreas Schwerin27, Ralf Sohmer27, Mar Sorribas59, Martin Steinbacher40, Junying Sun60, Gloria Titos12,19,20, Barbara Tokzko61, Thomas Tuch10, Pierre Tulet62, Peter Tunved46, Ville Vakkari24, Fernando Velarde21, Patricio Velasquez63, Paolo Villani5, Sterios Vratolis34, Sheng-Hsiang Wang48, Kay Weinhold10, Rolf Weller64, Margarita Yela59, Jesus Yus-Diez12, Vladimir Zdimal52, Paul Zieger46, and Nadezda Zikova52 Paolo Laj et al.
  • 1Univ. Grenoble-Alpes, CNRS, IRD, Grenoble-INP, IGE, 38000 Grenoble, France
  • 2Institute for Atmospheric and Earth System Research, University of Helsinki, Helsinki, Finland
  • 3Institute of Atmospheric Sciences and Climate, National Research Council of Italy, Bologna, Itay
  • 4Università di Modena e Reggio Emilia, Department of Engineering “Enzo Ferrari”, Modena, Italy
  • 5Université Clermont-Auvergne, CNRS, LaMP, OPGC, Clermont-Ferrand, France
  • 6Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, USA
  • 7NOAA/Earth Systems Research Laboratory, Boulder, CO, USA
  • 8NILU, Norwegian Institute for Air Research, Kjeller, Norway
  • 9Federal Office of Meteorology and Climatology, MeteoSwiss, Payerne, Switzerland
  • 10Institute for Tropospheric Research, Leipzig, Germany
  • 11Norwegian Meteorological Institute, Oslo, Norway
  • 12Institute of Environmental Assessment and Water Research (IDAEA), Spanish Research Council (CSIC), Barcelona, Spain
  • 13School of Earth and Environmental Sciences, Seoul National University, Seoul, Korea
  • 14European Commission, Joint Research Centre (JRC), Ispra, Italy
  • 15University of Puerto Rico, Rio Piedras Campus, San Juan, Puerto Rico
  • 16CSIRO Oceans and Atmosphere, PMB1 Aspendale VIC, Australia
  • 17World Meteorological Organisation, Global Atmosphere Watch Secretariat, Geneva, Switzerland
  • 18Lund University, Department of Physics, Division of Nuclear Physics, P.O. Box 118, 22100 Lund, Sweden
  • 19Department of Applied Physics, University of Granada, Granada, Spain
  • 20Andalusian Institute for Earth System Research (IISTA-CEAMA), University of Granada, Autonomous Government of Andalusia, Granada, Spain
  • 21Universidad Mayor de San Andres, Laboratorio de Fisica de la Atmosfera, La Paz, Boliv
  • 22Izaña Atmospheric Research Center (IARC), State Meteorological Agency (AEMET), Santa Cruz de Tenerife, Spain
  • 23Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgari
  • 24Atmospheric composition research, Finnish Meteorological Institute, Helsinki, Finland
  • 25Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen PSI, Switzerland
  • 26Saxon State Office for Environment, Agriculture and Geology (LfULG), Dresden, German
  • 27German Environment Agency (UBA), Zugspitze, Germany
  • 28Unit for Environmental Sciences and Management, North-West University, Potchefstroom, ZA-2520, South Africa
  • 29Atmospheric Sciences, Department of Environmental Sciences, University of Basel, Basel, Switzerland
  • 30ANDRA DRD/GES Observatoire Pérenne de l'Environnement, 55290 Bure, France
  • 31Cooperative Institute for Research in the Atmosphere, Colorado State University/ National Park Service
  • 32Meteorological Climatological and Geophysical Agency (BMKG), Jakarta, Indonesia
  • 33Institute of Environmental Protection – National Research Institute, Warsaw, Poland
  • 34Institute of Nuclear and Radiological Science & Technology, Energy & Safety N.C.S.R. "Demokritos", Attiki, Greece
  • 35Institut National de l'Environnement Industriel et des Risques (INERIS), Verneuil-en-Halatte, France
  • 36German Weather Service, Meteorological Observatory Hohenpeissenberg, Hohenpeißenberg, Germany
  • 37Aerosol d.o.o., Ljubljana, SI-1000, Sloveni
  • 38Department of Atmospheric Sciences, University of Utah, Salt Lake City, UT 84112
  • 39MTA-PE Air Chemistry Research Group, Veszprém, Hungary
  • 40Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland
  • 41The Energy and Resources Institute, IHC, Lodhi Road, New Delhi, India
  • 42Environmental Chemical Processes Laboratory (ECPL), University of Crete, Heraklion, Crete, 71003, Greece
  • 43ZAMG - Sonnblick Observatory Freisaalweg 165020 Salzburg Austria
  • 44Environmental Meteorology Research Division, National Institute of Meteorological Sciences, Seogwipo, Korea
  • 45Hydrometeorological Institute of Slovenia, Ljubljana, Slovenia
  • 46Department of Environmental Science and Analytical Chemistry (ACES) & Bolin Centre for Climate Research, Stockholm University, S-10691 Stockholm, Sweden
  • 47South African Weather Service, Research Department, Stellenbosch, South Africa
  • 48Department of Atmospheric Sciences, National Central University, Taoyuan, Taiwan
  • 49Observatoire des Sciences de l'Univers de La Réunion (OSUR), UMS3365, Saint-Denis de la Réunion, France
  • 50Institute of Environmental Research & Sustainable Development, National Observatory of Athens, Palea Penteli, 15236, Greece
  • 51Hydro-Meteorological Observation Center (HYMOC), Vietnam Meteorological and Hydrological Administration (VNMHA), Ministry of Natural Resources and Environment (MONRE), Ha Noi, Vietnam
  • 52Department of Aerosol Chemistry and Physics, Institute of Chemical Process Fundamentals, CAS, Prague, Czech Republic
  • 53Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia and Università del Salento, Lecce, Italy
  • 54Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, UMR 8212 CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France
  • 55Laboratoire d'Aérologie, CNRS-Université de Toulouse, CNRS, UPS, Toulouse, France
  • 56National Park Service, Air Resources Division, Lakewood, CO, USA
  • 57Environment and Climate Change Canada, Toronto, ON, Canada
  • 58Department of Physics and Astronomy, Appalachian State University, Boone, NC USA
  • 59Atmospheric Sounding Station, El Arenosillo, Atmospheric Research and Instrumentation Branch, INTA, 21130, Mazagón, Huelva, Spain
  • 60State Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry of CMA, Chinese Academy of Meteorological Sciences, Beijing 100081, China
  • 61Department of Environmental Monitoring, Assessment and Outlook, Chief Inspectorate of Environmental Protection, Warsaw, Poland
  • 62Laboratoire de l'Atmosphère et des Cyclones (LACy), UMR8105, Université de la Réunion – CNRS – Météo-France, Saint-Denis de La Réunion, France
  • 63Climate and Environmental Physics, University of Bern, Bern, Switzerland
  • 64Alfred Wegener Institute, 27570 Bremerhaven, Germany
  • anow at: National Council on Climate and Air Quality, Seoul, Korea

Abstract. Aerosol particles are essential constituents of the Earth’s atmosphere, impacting the earth radiation balance directly by scattering and absorbing solar radiation, and indirectly by acting as cloud condensation nuclei. In contrast to most greenhouse gases, aerosol particles have short atmospheric residence time resulting in a highly heterogeneous distribution in space and time. There is a clear need to document this variability at regional scale through observations involving, in particular, the in-situ near-surface segment of the atmospheric observations system. This paper will provide the widest effort so far to document variability of climate-relevant in-situ aerosol properties (namely wavelength dependent particle light scattering and absorption coefficients, particle number concentration and particle number size distribution) from all sites connected to the Global Atmosphere Watch network. High quality data from more than 90 stations worldwide have been collected and controlled for quality and are reported for a reference year in 2017, providing a very extended and robust view of the variability of these variables worldwide. The range of variability observed worldwide for light scattering and absorption coefficients, single scattering albedo and particle number concentration are presented together with preliminary information on their long-term trends and comparison with model simulation for the different stations. The scope of the present paper is also to provide the necessary suite of information including data provision procedures, quality control and analysis, data policy and usage of the ground-based aerosol measurements network. It delivers to users of the World Data Centre on Aerosol, the required confidence in data products in the form of a fully-characterized value chain, including uncertainty estimation and requirements for contributing to the global climate monitoring system.

Paolo Laj et al.

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Latest update: 17 Feb 2020
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Short summary
The paper establishes the fiducial reference of the GAW aerosol network providing the fully characterized value chain to the provision of four climate-relevant aerosol properties from ground-based sites. Data from almost 90 stations worldwide are reported for a reference year 2017, providing a unique and very robust view of the variability of these variables worldwide. Current Gaps in the GAW network are analyzed and requirements for the Global Climate Monitoring System are proposed.
The paper establishes the fiducial reference of the GAW aerosol network providing the fully...
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