Maqola

The CAMS reanalysis of atmospheric composition

Antje InnessECMWF, Shinfield Park, Reading, RG2 9AX, UKMelanie AdesECMWF, Shinfield Park, Reading, RG2 9AX, UKAnna Agustí‐PanaredaECMWF - European Centre for Medium-Range Weather Forecasts (Shinfield Park, RG2 9AX Reading - United Kingdom)Jérôme BarréACOML - Atmospheric Chemistry Observations and Modeling Laboratory (3090 Center Green Drive, Boulder, CO 80301 - United States)Anna BenedictowNorwegian Meteorological Institute, Postboks 43 Blindern, 0313 Oslo, NorwayAnne‐Marlene BlechschmidtInstitute of Environmental Physics, University of Bremen, Bremen, GermanyJuan J. DominguezECMWF, Shinfield Park, Reading, RG2 9AX, UKRichard EngelenECMWF, Shinfield Park, Reading, RG2 9AX, UKHenk EskesRoyal Netherlands Meteorological Institute, De Bilt, the NetherlandsJohannes FlemmingECMWF, Shinfield Park, Reading, RG2 9AX, UKVincent HuijnenRoyal Netherlands Meteorological Institute, De Bilt, the NetherlandsLuke JonesECMWF, Shinfield Park, Reading, RG2 9AX, UKZak KiplingECMWF, Shinfield Park, Reading, RG2 9AX, UKS. MassartECMWF, Shinfield Park, Reading, RG2 9AX, UKMark ParringtonECMWF, Shinfield Park, Reading, RG2 9AX, UKVincent‐Henri PeuchECMWF, Shinfield Park, Reading, RG2 9AX, UKMiha RazingerECMWF, Shinfield Park, Reading, RG2 9AX, UKSamuel RémyIPSL, CNRS/UPMC, Paris, FranceMichael SchulzNorwegian Meteorological Institute, Postboks 43 Blindern, 0313 Oslo, NorwayMartin SuttieECMWF, Shinfield Park, Reading, RG2 9AX, UK

2019en

ABI

Annotatsiya

Abstract. The Copernicus Atmosphere Monitoring Service (CAMS) reanalysis is the latest global reanalysis dataset of atmospheric composition produced by the European Centre for Medium-Range Weather Forecasts (ECMWF), consisting of three-dimensional time-consistent atmospheric composition fields, including aerosols and chemical species. The dataset currently covers the period 2003–2016 and will be extended in the future by adding 1 year each year. A reanalysis for greenhouse gases is being produced separately. The CAMS reanalysis builds on the experience gained during the production of the earlier Monitoring Atmospheric Composition and Climate (MACC) reanalysis and CAMS interim reanalysis. Satellite retrievals of total column CO; tropospheric column NO2; aerosol optical depth (AOD); and total column, partial column and profile ozone retrievals were assimilated for the CAMS reanalysis with ECMWF's Integrated Forecasting System. The new reanalysis has an increased horizontal resolution of about 80 km and provides more chemical species at a better temporal resolution (3-hourly analysis fields, 3-hourly forecast fields and hourly surface forecast fields) than the previously produced CAMS interim reanalysis. The CAMS reanalysis has smaller biases compared with most of the independent ozone, carbon monoxide, nitrogen dioxide and aerosol optical depth observations used for validation in this paper than the previous two reanalyses and is much improved and more consistent in time, especially compared to the MACC reanalysis. The CAMS reanalysis is a dataset that can be used to compute climatologies, study trends, evaluate models, benchmark other reanalyses or serve as boundary conditions for regional models for past periods.

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DOI: 10.5194/acp-19-3515-2019

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