Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-7229-2017 |
HSRL-2 aerosol optical measurements and microphysical retrievals vs. airborne in situ measurements during DISCOVER-AQ 2013: an intercomparison study | |
Sawamura, Patricia1,2; Moore, Richard H.1; Burton, Sharon P.1; Chemyakin, Eduard1,2; Mueller, Detlef2,3; Kolgotin, Alexei4; Ferrare, Richard A.1; Hostetler, Chris A.1; Ziemba, Luke D.1; Beyersdorf, Andreas J.5; Anderson, Bruce E.1 | |
2017-06-16 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; England; Russia |
英文摘要 | We present a detailed evaluation of remotely sensed aerosol microphysical properties obtained from an advanced, multi-wavelength high-spectral-resolution lidar (HSRL-2) during the 2013 NASA DISCOVER-AQ field campaign. Vertically resolved retrievals of fine-mode aerosol number, surface-area, and volume concentration as well as aerosol effective radius are compared to 108 collocated, airborne in situ measurement profiles in the wintertime San Joaquin Valley, California, and in summertime Houston, Texas. An algorithm for relating the dry in situ aerosol properties to those obtained by the HSRL at ambient relative humidity is discussed. We show that the HSRL-2 retrievals of ambient fine-mode aerosol surface-area and volume concentrations agree with the in situ measurements to within 25 and 10 %, respectively, once hygroscopic growth adjustments have been applied to the dry in situ data. Despite this excellent agreement for the microphysical properties, extinction and backscatter coefficients at ambient relative humidity derived from the in situ aerosol measurements using Mie theory are consistently smaller than those measured by the HSRL, with average differences of 31 +/- 5% and 53 +/- 11% for California and Texas, respectively. This low bias in the in situ estimates is attributed to the presence of coarse-mode aerosol that are detected by HSRL-2 but that are too large to be well sampled by the in situ instrumentation. Since the retrieval of aerosol volume is most relevant to current regulatory efforts targeting fine particle mass (PM2.5), these findings highlight the advantages of an advanced 3 beta + 2 alpha HSRL for constraining the vertical distribution of the aerosol volume or mass loading relevant for air quality. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403779200005 |
WOS关键词 | SPECTRAL-RESOLUTION LIDAR ; MULTIWAVELENGTH RAMAN LIDAR ; HYGROSCOPIC GROWTH ; RELATIVE-HUMIDITY ; ATMOSPHERIC AEROSOLS ; RADIATIVE PROPERTIES ; PARTICLE PARAMETERS ; UNITED-STATES ; SEA-SALT ; REGULARIZATION |
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/19476 |
专题 | 地球科学 |
作者单位 | 1.NASA, Langley Res Ctr, Hampton, VA 23665 USA; 2.Sci Syst & Applicat Inc, Hampton, VA 23666 USA; 3.Univ Hertfordshire, Hatfield, Herts, England; 4.Phys Instrumentat Ctr, Troitsk, Russia; 5.Calif State Univ San Bernardino, San Bernardino, CA 92407 USA |
推荐引用方式 GB/T 7714 | Sawamura, Patricia,Moore, Richard H.,Burton, Sharon P.,et al. HSRL-2 aerosol optical measurements and microphysical retrievals vs. airborne in situ measurements during DISCOVER-AQ 2013: an intercomparison study[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(11). |
APA | Sawamura, Patricia.,Moore, Richard H..,Burton, Sharon P..,Chemyakin, Eduard.,Mueller, Detlef.,...&Anderson, Bruce E..(2017).HSRL-2 aerosol optical measurements and microphysical retrievals vs. airborne in situ measurements during DISCOVER-AQ 2013: an intercomparison study.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(11). |
MLA | Sawamura, Patricia,et al."HSRL-2 aerosol optical measurements and microphysical retrievals vs. airborne in situ measurements during DISCOVER-AQ 2013: an intercomparison study".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.11(2017). |
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