Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028973 |
Seasonal Variations in High Arctic Free Tropospheric Aerosols Over Ny-Alesund, Svalbard, Observed by Ground-Based Lidar | |
Shibata, T.1; Shiraishi, K.2; Shiobara, M.3; Iwasaki, S.4; Takano, T.5 | |
2018-11-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
![]() |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:21页码:12353-12367 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | Free tropospheric aerosols over the high Arctic were observed by lidar for about 4 years from March 2014 at Ny-Alesund (78.9 degrees N, 11.9 degrees E). Vertical profiles of aerosol backscattering coefficients at two wavelengths, 532 and 1,064 nm, and depolarization ratio at one wavelength, 532 nm, are derived from these observations. The aerosol backscattering coefficient, the particle depolarization ratio, and the color ratio (the ratio of the backscattering coefficients at the two wavelengths) are roughly proportional to mass concentration, nonsphericity, and size of the aerosol particles, respectively. The aerosol backscattering coefficients indicate that monthly averaged concentration of aerosols was largest in the lowest free troposphere at about 1 km in altitude and was an order of magnitude less at an about 10 km in altitude and that the concentration of aerosols was highest from late spring to summer and lowest from late summer to fall. The depolarization ratio was less than a few percent in the troposphere during the four observed years. The depolarization ratio and the color ratio were greatest from winter to spring and smallest from summer to fall. The maxima in the monthly averaged nonsphericity and size precede the maxima in the monthly averaged concentration by a few months, indicating a seasonal change in the morphology or the characteristics of the aerosol particles. The small particle depolarization ratio of less than a few percent is consistent with previous findings that Arctic free tropospheric aerosol particles in spring are composed of a mixture of liquid phase sulfate and soot particles. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452001400033 |
WOS关键词 | DEPOLARIZATION RATIO ; OPTICAL DEPTH ; DISTRIBUTIONS ; AIRBORNE ; SIZE ; CLASSIFICATION ; TRANSPORT ; EUREKA ; CLOUD ; HAZE |
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/31993 |
专题 | 气候变化 |
作者单位 | 1.Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi, Japan; 2.Fukuoka Univ, Dept Earth Syst Sci, Fukuoka, Fukuoka, Japan; 3.Natl Inst Polar Res, Tokyo, Japan; 4.Natl Def Acad Japan, Yokosuka, Kanagawa, Japan; 5.Chiba Univ, Grad Sch Engn, Chiba, Japan |
推荐引用方式 GB/T 7714 | Shibata, T.,Shiraishi, K.,Shiobara, M.,et al. Seasonal Variations in High Arctic Free Tropospheric Aerosols Over Ny-Alesund, Svalbard, Observed by Ground-Based Lidar[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(21):12353-12367. |
APA | Shibata, T.,Shiraishi, K.,Shiobara, M.,Iwasaki, S.,&Takano, T..(2018).Seasonal Variations in High Arctic Free Tropospheric Aerosols Over Ny-Alesund, Svalbard, Observed by Ground-Based Lidar.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(21),12353-12367. |
MLA | Shibata, T.,et al."Seasonal Variations in High Arctic Free Tropospheric Aerosols Over Ny-Alesund, Svalbard, Observed by Ground-Based Lidar".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.21(2018):12353-12367. |
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