Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD030967 |
Direct Radiative Effect of Absorbing Aerosols: Sensitivity to Mixing State, Brown Carbon, and Soil Dust Refractive Index and Shape | |
Tuccella, Paolo1,2; Curci, Gabriele1,2; Pitari, Giovanni1; Lee, Seungun3; Jo, Duseong S.4,5 | |
2020-01-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy; South Korea; USA |
英文摘要 | Black carbon (BC), brown carbon (BrC), and soil dust are the most relevant radiation-absorbing aerosols in the climate system, and uncertainties of their absorbing optical properties are large. We performed a 5-year simulation with the GEOS-Chem global chemistry and transport model and calculated the aerosol optical properties testing different mixing state assumptions and absorption properties of BC and BrC, refractive index, and shape of soil dust. We found that the core-shell (CS) internal mixing representation produces the most accurate absorption aerosol optical depth and single-scattering albedo at Aerosol Robotic Network (AERONET) Sun photometers site observations dominated by carbonaceous absorption. Dust absorption is sensitive to the assumed refractive index. The nonspherical shape of dust improves the simulation at sites dominated by dust absorption. Global mean of all-sky direct radiative effect (DRE) by BC is +0.13 and +0.25 W/m(2) for external and CS mixing state assumptions, respectively. Adding BrC in CS mixing state, the BC-BrC DRE mixture increases to +0.40 W/m(2), indicating an absorption enhancement with respect to external mixing state of +0.27 W/m(2), which is less than the +0.51 W/m(2) previously reported. The difference is attributed to the inclusion of the blanching process of BrC from biomass burning. Dust DREs are -0.10, +0.11, and +0.22 W/m(2) for "low," "middle," and "high" dust absorption scenarios, respectively. Considering the nonspherical shape, these values change by up to 0.03 W/m(2). All-sky DRE by all radiation-absorbing aerosols is +0.46 W/m(2). Aerosol mixing state, BrC treatment, and dust optical property uncertainties suggest a total DRE uncertainty of -57%/+59%. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000521080000020 |
WOS关键词 | ABSORPTION ANGSTROM EXPONENT ; MODELING BLACK CARBON ; SEA-SALT AEROSOLS ; LIGHT-ABSORPTION ; OPTICAL-PROPERTIES ; ORGANIC AEROSOL ; SAHARAN DUST ; OBSERVATIONAL CONSTRAINTS ; CHEMICAL-PROPERTIES ; UNITED-STATES |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/280023 |
专题 | 气候变化 |
作者单位 | 1.Univ LAquila, Dept Phys & Chem Sci, Laquila, Italy; 2.Univ LAquila, Ctr Excellence Telesensing Environm & Model Predi, Laquila, Italy; 3.Seoul Natl Univ, Sch Earth & Environm Sci, Seoul, South Korea; 4.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 5.Univ Colorado, Dept Chem, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | Tuccella, Paolo,Curci, Gabriele,Pitari, Giovanni,et al. Direct Radiative Effect of Absorbing Aerosols: Sensitivity to Mixing State, Brown Carbon, and Soil Dust Refractive Index and Shape[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(2). |
APA | Tuccella, Paolo,Curci, Gabriele,Pitari, Giovanni,Lee, Seungun,&Jo, Duseong S..(2020).Direct Radiative Effect of Absorbing Aerosols: Sensitivity to Mixing State, Brown Carbon, and Soil Dust Refractive Index and Shape.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(2). |
MLA | Tuccella, Paolo,et al."Direct Radiative Effect of Absorbing Aerosols: Sensitivity to Mixing State, Brown Carbon, and Soil Dust Refractive Index and Shape".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.2(2020). |
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