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| DOI | 10.1016/j.atmosenv.2020.117616 |
| Parametric analysis for global single scattering albedo calculations | |
| Jeong J.I.; Jo D.S.; Park R.J.; Lee H.-M.; Curci G.; Kim S.-W. | |
| 发表日期 | 2020 |
| ISSN | 1352-2310 |
| 卷号 | 234 |
| 英文摘要 | Single scatter albedo (SSA) is a key parameter in radiative transport models for estimating aerosol direct radiative forcing (DRF) and is also a major contributor to DRF uncertainty. We investigate the sensitivity of SSA calculations to physical input parameters (e.g., mixing state, size distribution, density, and refractive index of aerosols) associated with absorbing aerosols (e.g., black carbon [BC], brown carbon [BrC], and soil dust). We attempted to estimate global aerosol SSAs using the 3-D global chemical transport model (GEOS-Chem) and a post-processing tool of aerosol optical properties (FlexAOD) and evaluated the model by comparing it with observed values. The model reproduces the observed variability of both the surface aerosol concentrations and aerosol optical depth (AOD) obtained from the Surface Particulate Matter Network (SPARTAN), the global Aerosol Mass Spectrometer (AMS), and the Aerosol Robotic Network (AERONET). Our sensitivity tests show that the physical input parameters, which are not as well understood as aerosol mass concentrations, can lead to large uncertainties in global SSA values. We find that BC mixing state, BrC, and a dust size distribution have significant impacts on the global SSA calculation. Their combined use can reduce aerosol SSA bias in the model by 43% at 440 nm, compared to observations. We also find that the direct radiative effect (DRE) of global aerosols increases by 10% (from −2.62 W m−2 to −2.36 W m−2) when the SSA bias is corrected. © 2020 Elsevier Ltd |
| 关键词 | Black carbonBrown carbonDirect radiative effectSingle scattering albedo |
| 语种 | 英语 |
| scopus关键词 | Aerosols; Atmospheric radiation; Bromine compounds; Carbon; Dust; Mixing; Refractive index; Size distribution; Soil testing; Solar radiation; Uncertainty analysis; Aerosol direct radiative forcing; Aerosol mass concentration; Aerosol optical depths; Aerosol optical property; Aerosol robotic networks; Chemical transport models; Dust size distribution; Single scattering albedo; Atmospheric movements; black carbon; carbon; chlormethine; lead; aerosol; albedo; atmospheric transport; black carbon; brown carbon; global change; parameter estimation; radiative transfer; scattering; uncertainty analysis; aerosol; albedo; Article; concentration (parameter); controlled study; density; dust; optical depth; particle size; particulate matter; priority journal; refraction index; single scatter albedo; soil |
| 来源期刊 | ATMOSPHERIC ENVIRONMENT
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/249102 |
| 作者单位 | School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Department of Chemistry, University of Colorado, Boulder, CO, United States; Department of Physical and Chemical Sciences, University of L'Aquila, L'Aquila, Italy; Center of Excellence in Telesensing of Environment and Model Prediction of Severe Events (CETEMPS), University of L'Aquila, L'Aquila, Italy |
| 推荐引用方式 GB/T 7714 | Jeong J.I.,Jo D.S.,Park R.J.,et al. Parametric analysis for global single scattering albedo calculations[J],2020,234. |
| APA | Jeong J.I.,Jo D.S.,Park R.J.,Lee H.-M.,Curci G.,&Kim S.-W..(2020).Parametric analysis for global single scattering albedo calculations.ATMOSPHERIC ENVIRONMENT,234. |
| MLA | Jeong J.I.,et al."Parametric analysis for global single scattering albedo calculations".ATMOSPHERIC ENVIRONMENT 234(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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