主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2022, Vol. 38 ›› Issue (5): 42-48.doi: 10.3969/j.issn.1673-503X.2022.05.005

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Analysis of aerosol optical characteristics of Longfengshan regional background station in Heilongjiang province

Peng WANG1,2(),Hu-jia ZHAO1,*(),Yan-jun MA1,Jing-min SUN2,Tong-chuan XIE2,Jia-geng DAI2,Xu-li HOU3,Ming-jia LV4   

  1. 1. Institute of Atmospheric Environment, China Meteorological Administration, Shenyang 110166, China
    2. Longfengshan Regional Atmospheric Background Station, Harbin 150200, China
    3. Hegang Meteorological Service, Hegang 154100, China
    4. Meteorological Satellite Earth Station of Jiamusi, Jiamusi 154008, China
  • Received:2021-11-15 Online:2022-10-28 Published:2022-11-04
  • Contact: Hu-jia ZHAO E-mail:lfswangpeng@yeah.net;tjzhj4659@sina.com

Abstract:

Based on the long-term observation data of aerosol optical properties at Longfengshan regional background station in Heilongjiang province from 2010 to 2020, the variation of aerosol optical depth, Angström exponent, single scattering albedo, particle volume size distribution, and aerosol direct radiative effect were analyzed.The results show that the maximum aerosol optical depth in the background area appears in July, with an average value of 0.67.The smaller values occur in December, January, and February, with an average value of 0.17, 0.02, and 0.18, respectively.The daily aerosol optical depth reaches the highest value of 0.39 at 17:00. The Angström exponent decreases significantly in April and May, with an average value of 1.20 and 1.21, respectively.The Angström exponent reaches the largest value in December, with an average value of 1.74.The low value of single scattering albedo (SSA) occurs in April, August, and October, with the average values of 0.84, 0.82, and 0.84, respectively.The peak Angström exponent reaches 1.44 at noon.The maximum volume of coarse mode particles appears in May, which is about 0.04 μm3·μm-2, and the effective radius is about 3.85 μm.The maximum volume of fine mode particles is 0.06 μm3·μm-2 with an effective radius of 0.19 μm appeared in July.In autumn and winter, the volume of fine and coarse mode particles further decreases in Longfengshan.The maximum values of aerosol direct radiative effect at the ground and on the top of the atmosphere appear in July with values of -94.44 W·m-2 and -22.33 W·m-2, respectively.

Key words: Aerosol, Optical properties, Aerosol radiation effect, Volume size distribution

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