The CAMS reanalysis of atmospheric composition
The CAMS reanalysis of atmospheric composition
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DOI：
10.5194/acp-19-3515-2019
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发表时间：
2019-03-20
影响因子：
6.3
通讯作者：
Suttie, Martin
中科院分区：
文献类型：
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作者：
Inness, Antje;Ades, Melanie;Suttie, Martin
哥白尼大气监测服务（CAMS）再分析是欧洲中期天气预报中心（ECMWF）制作的最新全球大气成分再分析数据集，由三维时间一致的大气成分场组成，包括气溶胶和化学物种。该数据集目前涵盖2003-2016年期间，今后将每年增加一年。对温室气体的重新分析正在单独进行。CAMS再分析建立在早期监测大气成分和气候（MACC）再分析和CAMS中期再分析过程中获得的经验基础上。卫星反演的总柱CO;对流层柱NO2;气溶胶光学厚度（AOD）;和总柱，部分柱和剖面臭氧反演同化的CAMS再分析与ECMWF的综合预报系统。新的再分析有一个增加的水平分辨率约80公里，并提供了更多的化学物种在一个更好的时间分辨率（3小时的分析领域，3小时的预测领域和每小时的表面预测领域）比以前产生的CAMS中期再分析。CAMS再分析有较小的偏差相比，大多数独立的臭氧，一氧化碳，二氧化氮和气溶胶光学厚度观测用于验证在本文中比前两个再分析，是大大改善，更一致的时间，特别是相比MACC再分析。CAMS再分析是一个数据集，可用于计算气候，研究趋势，评估模型，基准其他再分析或作为过去时期区域模型的边界条件。
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.