Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-181-2019 |
Modelling black carbon absorption of solar radiation: combining external and internal mixing assumptions | |
Curci, Gabriele1,2; Alyuz, Ummugulsum3; Baro, Rocio4; Bianconi, Roberto5; Bieser, Johannes6; Christensen, Jesper H.7; Colette, Augustin8; Farrow, Aidan9; Francis, Xavier9; Jimenez-Guerrero, Pedro4; Im, Ulas7; Liu, Peng10; Manders, Astrid11; Palacios-Pena, Laura4; Prank, Marje12,13; Pozzoli, Luca3,13; Sokhi, Ranjeet9; Solazzo, Efisio14; Tuccella, Paolo12; Unal, Alper3; Vivanco, Marta G.15; Hogrefe, Christian16; Galmarini, Stefano14 | |
2019-01-07 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
![]() |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:1页码:181-204 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy; Turkey; Spain; Germany; Denmark; France; England; USA; Netherlands; Finland |
英文摘要 | An accurate simulation of the absorption properties is key for assessing the radiative effects of aerosol on meteorology and climate. The representation of how chemical species are mixed inside the particles (the mixing state) is one of the major uncertainty factors in the assessment of these effects. Here we compare aerosol optical properties simulations over Europe and North America, coordinated in the framework of the third phase of the Air Quality Model Evaluation International Initiative (AQMEII), to 1 year of AERONET sunphotometer retrievals, in an attempt to identify a mixing state representation that better reproduces the observed single scattering albedo and its spectral variation. We use a single post-processing tool (FlexAOD) to derive aerosol optical properties from simulated aerosol speciation profiles, and focus on the absorption enhancement of black carbon when it is internally mixed with more scattering material, discarding from the analysis scenes dominated by dust. We found that the single scattering albedo at 440nm (omega(0,440)) is on average overestimated (underestimated) by 3-5% when external (core-shell internal) mixing of particles is assumed, a bias comparable in magnitude with the typical variability of the quantity. The (unphysical) homogeneous internal mixing assumption underestimates omega(0,440) by 14%. The combination of external and core-shell configurations (partial internal mixing), parameterized using a simplified function of air mass aging, reduces the omega(0,440) bias to-1/-3%. The black carbon absorption enhancement (E-abs) in core-shell with respect to the externally mixed state is in the range 1.8-2.5, which is above the currently most accepted upper limit of 1.5. The partial internal mixing reduces E-abs to values more consistent with this limit. However, the spectral dependence of the absorption is not well reproduced, and the absorption Angstrom exponent AAE(675)(440) is overestimated by 70-120%. Further testing against more comprehensive campaign data, including a full characterization of the aerosol profile in terms of chemical speciation, mixing state, and related optical properties, would help in putting a better constraint on these calculations. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000455220500001 |
WOS关键词 | AEROSOL OPTICAL-PROPERTIES ; BOUNDARY-CONDITIONS ; ANGSTROM EXPONENT ; BROWN CARBON ; STATE ; EMISSIONS ; PARTICLES ; CHEMISTRY ; SYSTEMS ; AERONET |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/28429 |
专题 | 地球科学 |
作者单位 | 1.Univ Aquila, Dept Phys & Chem Sci, Laquila, Italy; 2.Univ Aquila, Ctr Excellence Telesening Environm & Model Predic, Laquila, AQ, Italy; 3.Istanbul Tech Univ, Eurasia Inst Earth Sci, TR-34469 Istanbul, Turkey; 4.Univ Murcia, Dept Phys, Murcia 30003, Spain; 5.Enviroware Srl, I-20863 Concorezzo, MB, Italy; 6.Zentrum Mat & Kustenforsch GmbH, Helmholtz Zentrum Geesthacht, D-21502 Geesthacht, Germany; 7.Aarhus Univ, Dept Environm Sci, Atmospher Modelling Secton ATMO, Frederiksborgvej 399, DK-4000 Roskilde, Denmark; 8.INERIS, Atmospher Modelling & Environm Mapping Unit, BP2, F-60550 Verneuil En Halatte, France; 9.Univ Hertfordshire, CAIR, Coll Lane, Hatfield AL10 9AB, Herts, England; 10.US EPA, NRC Res Associate Computat Exposure Div, Natl Exposure Res Lab, Res Triangle Pk, NC 27711 USA; 11.TNO, POB 80015, NL-3508 TA Utrecht, Netherlands; 12.Finnish Meteorol Inst, Atmospher Composit Res Unit, Helsinki 00560, Finland; 13.Cornell Univ, Dept Earth & Atmospher Sci, Ithaca, NY 14853 USA; 14.European Commiss, Joint Res Ctr, I-21027 Ispra, VA, Italy; 15.CIEMAT, E-28040 Madrid, Spain; 16.US EPA, Computat Exposure Div, Natl Exposure Res Lab, Res Triangle Pk, NC 27711 USA |
推荐引用方式 GB/T 7714 | Curci, Gabriele,Alyuz, Ummugulsum,Baro, Rocio,et al. Modelling black carbon absorption of solar radiation: combining external and internal mixing assumptions[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(1):181-204. |
APA | Curci, Gabriele.,Alyuz, Ummugulsum.,Baro, Rocio.,Bianconi, Roberto.,Bieser, Johannes.,...&Galmarini, Stefano.(2019).Modelling black carbon absorption of solar radiation: combining external and internal mixing assumptions.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(1),181-204. |
MLA | Curci, Gabriele,et al."Modelling black carbon absorption of solar radiation: combining external and internal mixing assumptions".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.1(2019):181-204. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论