Concentrations, optical and radiative properties of carbonaceous aerosols over urban Lanzhou, a typical valley city: Results from in-situ observations and numerical model
Concentrations, optical and radiative properties of carbonaceous aerosols over urban Lanzhou, a typical valley city: Results from in-situ observations and numerical model
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典型河谷城市兰州城区碳质气溶胶的浓度、光学和辐射特性：现场观测和数值模型结果
DOI：
10.1016/j.atmosenv.2019.06.046
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发表时间：
2019-09
影响因子：
5
通讯作者：
Qin Dahe
中科院分区：
文献类型：
--
作者：
Zhao Suping;Yu Ye;Yin Daiying;Yu Zhousuo;Dong Longxiang;Mao Zhuliang;He Jianjun;Yang Jiancai;Li Ping;Qin Dahe
含碳气溶胶的浓度、光学和辐射效应对于研究气候、环境和健康影响至关重要。以往的研究较少结合现场观测的数值模拟，尤其是气溶胶垂直廓线。在这项研究中，我们离线测量了2017年12月26日至2018年1月11日期间兰州市亚微米黑碳（BC）气溶胶的垂直廓线，并在线获得了气溶胶光学特性。使用气溶胶和云的光学特性（OPAC）和圣巴巴拉DISORT大气辐射传输（SBDART）模型评估了BC的光学特性和辐射效应。BC气溶胶的吸收系数、散射系数和光学厚度分别为9 ~ 83 M m−1、3-24 M m− 1和0.02 ~ 0.2，平均占研究期间总气溶胶光学特性的50%、3%和11%。大气层顶面BC气溶胶辐射强迫（ARF）为16.6 ~ 108.8 W m− 2，占总ARF的17.3%~ 97.4%，平均为66.6%，且随着BC浓度的增加，ARF的百分比显著增加。在研究期间，BC气溶胶引起的平均大气加热率（AHR）为1.94 K day− 1，范围为0.46至3.03 K day− 1。这项研究有助于了解吸光气溶胶对气候和城市山谷灰霾污染的影响。
The concentrations, optical and radiative effects of carbonaceous aerosols were essential to studies of the climatic, environmental and health effects. The previous studies less combined numerical simulation within-situobservations, especially for the aerosol vertical profiles. In this study, we off-line measured vertical profiles of submicron black carbon (BC) aerosols and on-line obtained aerosol optical properties over urban Lanzhou during 26 December 2017 to 11 January 2018. The BC optical properties and radiative effects were evaluated using Optical Properties of Aerosols and Clouds (OPAC) and Santa Barbara DISORT Atmospheric Radiative Transfer (SBDART) models. The absorption and scattering coefficients and optical depth of BC aerosols ranged from 9 to 83 M m−1, 3–24 M m−1and 0.02 to 0.2 respectively, which in average accounted for 50%, 3% and 11% of the optical properties of total aerosols during the study period. BC aerosol radiative forcing (ARF) within ATMOS (top-surface) varying from 16.6 to 108.8 W m−2accounted for 17.3%–97.4% of total aerosols ARF with an average of 66.6%, and the percentages increased significantly as BC concentrations increased during the period. The mean atmospheric heating rate (AHR) induced by BC aerosols was 1.94 K day−1ranging from 0.46 to 3.03 K day−1during the study period. This study contributes to understanding the impacts of light-absorbing aerosols on climate and haze pollution in an urban valley.
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影响因子：
6.3
作者：
R. Pokhrel;E. Beamesderfer;Nick L. Wagner;J. Langridge;D. Lack;T. Jayarathne;E. Stone;C. Stockwell-C.-S
通讯作者：
R. Pokhrel;E. Beamesderfer;Nick L. Wagner;J. Langridge;D. Lack;T. Jayarathne;E. Stone;C. Stockwell-C.-S
DOI：
10.1016/j.scitotenv.2012.05.058
发表时间：
2012-08
期刊：
The Science of the total environment
影响因子：
--
作者：
P. Safai;M. Prudhvi Raju;R. Maheshkumar;J. Kulkarni;P. Rao;P. Devara
通讯作者：
P. Safai;M. Prudhvi Raju;R. Maheshkumar;J. Kulkarni;P. Rao;P. Devara
DOI：
10.1002/2014jd021483
发表时间：
2014-05
期刊：
Journal of Geophysical Research: Atmospheres
影响因子：
--
作者：
R. Latha;B. S. Murthy;K. Lipi;Manoj Kumar;Subrata Kumar Das;N. Mahanti
通讯作者：
R. Latha;B. S. Murthy;K. Lipi;Manoj Kumar;Subrata Kumar Das;N. Mahanti
影响因子：
--
作者：
T. Novakov;D. Hegg;P. Hobbs
通讯作者：
T. Novakov;D. Hegg;P. Hobbs
影响因子：
5.5
作者：
S. Tiwari;U. Dumka;P. Hopke;P. Tunved;A. Srivastava;D. S. Bisht;R. Chakrabarty
通讯作者：
S. Tiwari;U. Dumka;P. Hopke;P. Tunved;A. Srivastava;D. S. Bisht;R. Chakrabarty