The aerosol-climate model ECHAM5-HAM
The aerosol-climate model ECHAM5-HAM
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DOI：
10.5194/acp-5-1125-2005
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发表时间：
2004-09
影响因子：
6.3
通讯作者：
P. Stier;J. Feichter;S. Kinne;S. Kloster;E. Vignati;J. Wilson;L. Ganzeveld;I. Tegen;M. Werner-M.-Werne
中科院分区：
文献类型：
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作者：
P. Stier;J. Feichter;S. Kinne;S. Kloster;E. Vignati;J. Wilson;L. Ganzeveld;I. Tegen;M. Werner-M.-Werne
介绍了气溶胶气候模拟系统ECHAM 5-HAM。它是基于一个灵活的微物理方法，并作为外部强加的参数的数量最小化，允许在广泛的气候制度的应用。ECHAM 5-HAM预测了微物理相互作用的内部和外部混合气溶胶种群以及它们的尺寸分布和组成的集合的演变。粒度分布由对数正态模式的叠加表示。在目前的设置中，主要的全球气溶胶化合物硫酸盐（SU），黑碳（BC），颗粒有机物（POM），海盐（SS）和矿物粉尘（DU）。2000年模拟的全球年度平均气溶胶负荷（寿命）为：SO 4：0.80 Tg（S）（3.9天），BC：0.11 Tg（5.4天），POM：0.99 Tg（5.4天），SS：10.5 Tg（0.8天），DU：8.28 Tg（4.6天）。一个广泛的评价与现场和遥感测量强调，模型的结果一般是在良好的协议与全球气溶胶系统的观测。模拟的全球年平均气溶胶光学厚度（AOD）为0.14，与AERONET测量的估计值（0.14）和MODIS-MISR卫星反演的合成值（0.16）非常一致。从区域来看，这些偏差是不可忽略的。然而，可归因于人类活动的AOD的主要模式再现。
The aerosol-climate modelling system ECHAM5-HAM is introduced. It is based on a flexible microphysical approach and, as the number of externally imposed parameters is minimised, allows the application in a wide range of climate regimes. ECHAM5-HAM predicts the evolution of an ensemble of microphysically interacting internally- and externally-mixed aerosol populations as well as their size-distribution and composition. The size-distribution is represented by a superposition of log-normal modes. In the current setup, the major global aerosol compounds sulfate (SU), black carbon (BC), particulate organic matter (POM), sea salt (SS), and mineral dust (DU) are included. The simulated global annual mean aerosol burdens (lifetimes) for the year 2000 are for SO4: 0.80 Tg(S) (3.9 days), for BC: 0.11 Tg (5.4 days), for POM: 0.99 Tg (5.4 days), for SS: 10.5 Tg (0.8 days), and for DU: 8.28 Tg (4.6 days). An extensive evaluation with in-situ and remote sensing measurements underscores that the model results are generally in good agreement with observations of the global aerosol system. The simulated global annual mean aerosol optical depth (AOD) is with 0.14 in excellent agreement with an estimate derived from AERONET measurements (0.14) and a composite derived from MODIS-MISR satellite retrievals (0.16). Regionally, the deviations are not negligible. However, the main patterns of AOD attributable to anthropogenic activity are reproduced.