龙凤山大气气溶胶散射特性观测分析
Characteristics of aerosol scattering coefficient at Longfengshan regional background station
-
摘要: 利用2018年龙凤山区域大气本底站（简称龙凤山站）气溶胶散射系数、PM10质量浓度及常规气象观测资料，研究了东北本底地区气溶胶散射系数的变化特征.结果表明，2018年龙凤山站3个波长下气溶胶散射系数的均值为（194.1±202.4）Mm-1（450 nm）、（133.4±139.2）Mm-1（550 nm）、（81.8±85.3）Mm-1（700 nm）.龙凤山地区散射系数具有明显的日变化特征，且不同季节的日变化特征具有较大区别.龙凤山地区地处相对洁净的背景地区，气溶胶散射系数水平相对较低，春季受局地及长距离风沙的影响散射系数均值较高，冬季东北地区采暖燃烧排放量比较大，大气层相对稳定，不利于气溶胶污染物的扩散，冬季气溶胶散射系数最高.夏秋季受湿沉降与植被条件的影响气溶胶散射系数最低.散射系数与PM10质量浓度相关性较好，相关系数r为0.82.龙凤山PM10的质量散射效率为3.6 m2·g-1（550 nm）.2018年龙凤山PM10气溶胶的散射Angstrom指数（SAE）平均值为1.96±0.25，表明在观测期间气溶胶主要是以较小的粒子主导，夏季的SAE最大，秋季的SAE最低，春季和冬季居中.Abstract: Based on the aerosol scattering coefficient, PM10 mass concentration and meteorological data at Longfengshan Regional Atmospheric Background Station from Jan 2018 to Feb. 2019, the characteristics of aerosol scattering coefficient in Northeast China background area were investigated. The results showed that the mean values of aerosol scattering coefficients at Longfengshan station were (194.1±202.4) Mm-1(450 nm), (133.4±139.2) Mm-1(550 nm), (81.8±85.3) Mm-1(700 nm). The diurnal variation of scattering coefficient was obvious with great difference in different seasons. The Longfengshan area is located in a relatively clean background area, and the aerosol scattering coefficient was relatively low. The average value of the scattering coefficient in spring was relatively high due to the influence of local and long-distance dust. In winter, the aerosol scattering coefficient was the highest due to the relatively high emissions from heating and relatively stable atmosphere, which was not conducive to the diffusion of pollutants. The lowest aerosol scattering coefficient in summer and autumn was due to wet deposition and vegetation conditions. The scattering coefficient was significantly correlated with the mass concentration of PM10, with a correlation coefficient of 0.82. The PM10 mass scattering efficiency at the wavelength of 550 nm was 3.6 m2·g-1 at Longfengshan station. The average aerosol Scattering Angstrom Exponent (SAE) of the PM10 was 1.96±0.25, which indicated that the aerosol was mainly dominated by smaller particles during the observation period. The maximum value of SAE occurred in summer, the minimum value appeared in autumn, and the value in spring and winter was in between.
-
-
[1] CHARLSON R J, LANGNER J, RODHE H, et al. Perturbation of the northern hemisphere radiative balance by backscattering from anthropogenic sulfate aerosols[J]. Tellus, 1991, 43AB:152-163. [2] WANG P, CHE H Z, ZHANG X C, et al. Aerosol optical properties of regional background atmosphere in Northeast China[J]. Atmospheric Environment, 2010, 44(35):4404-4412. [3] 杨志峰. 中国特征区域大气气溶胶光学特性研究[D]. 北京:中国气象科学研究院,2008. YANG Z F, The aerosol optical characteristics in representative regions over China[D].Beijing:Chinese Academy of Meteorological Sciences, 2008(in Chinese). [4] CHE H Z, ZHAO H J, WU Y F, et al. Analyses of aerosol optical properties and direct radiative forcing over urban and industrial regions in Northeast China[J]. Meteorology and Atmospheric Physics, 2015, 127(3):345-354. [5] 宋建洋,郑向东,程兴宏,等.临安与龙凤山辐射数据质量及初步结果比较[J]. 应用气象学报,2013,24(1):65-74. SONG J Y, ZHENG X D, CHENG X H, et al. Quality evaluations and comparisons of radiation data at Lin'an and Longfengshan stations[J]. Journal of Applied Meteorological Science, 2013,24(1):65-74(in Chinese).
[6] HEINTZENBERG J, CHARLSON R J. Design and applications of the integrating nephelometer:A review[J]. Journal of Atmospheric and Oceanic Technology, 1996, 13(5):987-1000. [7] 祁雪飞.华北地区大气气溶胶散射吸湿增长特性观测研究[D]. 北京:中国气象科学研究院, 2018. QI X F. Aerosol Hygroscopicity based on scattering measurements at a rural site of the North China Plain[D]. Beijing:Master Thesis of Chinese Academy of Meteorological Sciences, 2018(in Chinese). [8] 马楠,周秀骥,颜鹏,等. 一种改进的TSI3563积分浊度误差校正方法[J]. 应用气象学报, 2015, 26(1):12-21. MA N, ZHOU X J, YAN P, et al. A Modified method to correct the measurement error of TSI3563 integrating nephelometer[J]. Journal of Applied Meteorological Science, 2015, 26(1):12-21(in Chinese).
[9] 许建明, 耿福海, 甄灿明, 等. 上海浦东地区气溶胶散射系数及影响因子[J]. 环境科学学报, 2010, 30(1):211-216. XU J M, GENG F H, ZHEN C M, et al. Aerosol scattering coefficients and the factors affecting them in Shanghai Pudong[J]. Acta Scientiae Circumstantiae, 2010, 30(1):211-216(in Chinese).
[10] 岳建华,陶俊,林泽健,等. 成都春季生物质燃烧和沙尘期间气溶胶散射特征及其重建[J]. 环境科学,2012, 33(7):2151-2157. YUE J, TAO J, LIN Z J, et al. Characterization and reconstruction of aerosol light scattering coefficient at Chengdu during biomass burning and dust storm period in Spring[J]. Environmental Science, 2012, 33(7):2151-2157(in Chinese).
[11] 苏晨,张小玲,刘强,等. 上甸子本底站气溶胶散射系数变化特征的初步分析[J]. 气候与环境研究, 2009,14(5):537-545. SU C, ZHANG X L, LIU Q, et al. Analysis of the characteristics of aerosol scattering coefficient at Shangdianzi background station[J]. Climatic and Environmental Research, 2009, 14(5):537-545(in Chinese).
[12] XU J, BERGIN M H, YU X, et al. Measurement of aerosol chemical, physical and radiative properties in the Yangtze delta region of China[J]. Atmospheric Environment, 2002, 36:161-173. [13] 齐冰,杜荣光,徐宏辉,等. 杭州市区大气气溶胶散射特性观测分析[J]. 高原气象, 2014, 33(1):277-284. QI B, DU R G, XU H H, et al. An observational study on aerosol scattering properties in urban site of Hangzhou[J]. Plateau Meteorology, 2014, 33(1):277-284(in Chinese).
[14] 彭艳梅,高磊,王舒,等.塔克拉玛干沙漠腹地气溶胶不同波段散射系数比较[J]. 沙漠与绿洲气象,2018, 12(3):26-32. PENG Y M, GAO L, WANG S, et al. Comparison of aerosol scattering coefficients of different wavebands in the hinterland of the Taklimakan Desert[J]. Desert and Oasis Meteorology, 2018, 12(3):26-32(in Chinese).
[15] 姚青,蔡子颖,韩素琴,等. 天津冬季雾霾天气下颗粒物质量浓度分布与光学特性[J]. 环境科学研究,2014, 27(5):462-469. YAO Q, CAI Z Y, HAN S Q, et al. PM2.5 pollution characteristics and aerosol optical properties during fog-haze episodes in Tianjin[J]. Research of Environmental Sciences, 2014, 27(5):462-469(in Chinese).
[16] BERGIN M H, GASS G R, XU J, et al. Aerosol radiative, physical, and chemical properties in Beijing during June 1999[J]. Journal of Geophysical Research, 2001, 106(D16):17969-17980. [17] 延昊,矫梅燕,赵琳娜,等. 中国北方气溶胶散射和PM10浓度特征[J]. 高原气象, 2008, 27(4):852-858. YAN H, JIAO M Y, ZHAO L N, et al. Characteristics of aerosol light-scattering and PM10 concentration in North China[J]. Plateau Meteorology, 2008, 27(4):852-858(in Chinese).
[18] PEREIRA S, WAGNER F, SILVA A M. Scattering properties and mass concentration of local and long-range transported aerosols over the south western Iberia peninsula[J]. Atmospheric Environment, 2008, 42(33):7623-7631. -
点击查看大图
计量
- 文章访问数: 1475
- HTML全文浏览数: 1475
- PDF下载数: 31
- 施引文献: 0
下载:
