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The CAMS reanalysis of atmospheric composition
- Source :
- Atmospheric Chemistry and Physics, Vol 19, Pp 3515-3556 (2019), Atmospheric Chemistry and Physics, Atmospheric Chemistry and Physics, European Geosciences Union, 2019, 19 (6), pp.3515-3556. ⟨10.5194/acp-19-3515-2019⟩, Atmospheric Chemistry and Physics, 2019, 19 (6), pp.3515-3556. ⟨10.5194/acp-19-3515-2019⟩
- Publication Year :
- 2019
- Publisher :
- Copernicus Publications, 2019.
-
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.
- Subjects :
- Horizontal resolution
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]
0303 health sciences
Atmospheric Science
010504 meteorology & atmospheric sciences
010501 environmental sciences
01 natural sciences
lcsh:QC1-999
Atmospheric composition
Troposphere
Atmosphere
lcsh:Chemistry
03 medical and health sciences
lcsh:QD1-999
13. Climate action
Greenhouse gas
Climatology
Temporal resolution
Satellite
Optical depth
lcsh:Physics
030304 developmental biology
0105 earth and related environmental sciences
Subjects
Details
- Language :
- English
- ISSN :
- 16807324 and 16807316
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- Atmospheric Chemistry and Physics
- Accession number :
- edsair.doi.dedup.....627b959f0c241d3b5d6d7f9eb3cafe35