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A global analysis of climate-relevant aerosol properties retrieved from the network of Global Atmosphere Watch (GAW) near-surface observatories
Atmospheric measurement techniques, 2020-08, Vol.13 (8), p.4353-4392
2020
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Autor(en) / Beteiligte
Titel
A global analysis of climate-relevant aerosol properties retrieved from the network of Global Atmosphere Watch (GAW) near-surface observatories
Ist Teil von
  • Atmospheric measurement techniques, 2020-08, Vol.13 (8), p.4353-4392
Ort / Verlag
Katlenburg-Lindau: Copernicus GmbH
Erscheinungsjahr
2020
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
  • 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 times, 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 observation 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 almost 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 measurement 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.
Sprache
Englisch
Identifikatoren
ISSN: 1867-8548, 1867-1381
eISSN: 1867-8548
DOI: 10.5194/amt-13-4353-2020
Titel-ID: cdi_doaj_primary_oai_doaj_org_article_19a4fc184512448f83e72c5643d46ccd
Format
–
Schlagworte
Absorption, Absorption coefficient, Absorptivity, Aerosol particles, Aerosol properties, Aerosols, Air pollution, Air quality monitoring stations, Albedo, Albedo (solar), Analysis, Atmosphere, Atmospheric and Oceanic Physics, Carbon, Climate, Climate change, Climate monitoring, Climate variability, Climatic analysis, Cloud condensation nuclei, Coefficients, Computer simulation, Condensates, Condensation nuclei, Data centers, Earth atmosphere, Emissions, Endangered & extinct species, Environmental policy, Extinction, Gases, Global aerosols, Global climate, Greenhouse effect, Greenhouse gases, Information centres, Light, Light scattering, Monitoring systems, Observatories, Particle size, Particle size distribution, Physics, Properties, Quality control, Radiation balance, Size distribution, Solar radiation, Studies, Surface chemistry, Variability, Wavelength

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