| 生物质燃烧输送对青藏高原气溶胶光学辐射特性的影响研究 |
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| 引用本文： | 刘颖,朱君.生物质燃烧输送对青藏高原气溶胶光学辐射特性的影响研究[J].气象科技,2022,50(6):878-884. |
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| 作者姓名： | 刘颖 朱君 |
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| 作者单位： | 1 南京信息工程大学环境科学与工程学院，江苏省大气环境监测与污染控制研究实验室，江苏 南京 210044；2 江苏省响水县气象局，江苏响水 224600 |
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| 基金项目： | 国家自然科学基金项目(No.41975161, 42030612, 42030608)资助 |
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| 摘 要： | 利用青藏高原拉萨(Lhasa)和珠峰(QOMS_CAS)站点地基CE 318太阳光度计观测数据，研究了2012年4月2日至4月5日一次生物质燃烧输送对青藏高原气溶胶光学和辐射特性的影响；并结合卫星遥感产品以及后向轨迹模式分析了本次生物质燃烧输送的可能来源。结果表明：本次气溶胶污染期间Lhasa和QOMS_CAS站点的主要气溶胶类型变为生物质燃烧气溶胶，气溶胶粒子的消光性增大(气溶胶光学厚度(AOD)增大，Lhasa和QOMS_CAS站点AOD最大值分别为0.4和0.29)，尺度减小(消光波长指数(EAE)>1.5)，吸收性增大(吸收波长指数(AAE)>1.3)，细模态粒子体积浓度增大，而细模态粒子峰值半径减小。气溶胶辐射强迫表明此次输送过程使得Lhasa和QOMS_CAS站点的气溶胶对大气顶和地表的降温作用增强，对大气的增温作用也增强。生物质燃烧输送的可能来源为南亚的印度东北部，尼泊尔与不丹地区。
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| 关 键 词： | 生物质燃烧 青藏高原 气溶胶光学和辐射特性 |
| 收稿时间： | 2021/11/29 0:00:00 |
| 修稿时间： | 2022/8/22 0:00:00 |
Influence of a Biomass Burning Transport Process on Aerosol Optical and Radiation Properties over Tibet Plateau |
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| LIU Ying,ZHU Jun.Influence of a Biomass Burning Transport Process on Aerosol Optical and Radiation Properties over Tibet Plateau[J].Meteorological Science and Technology,2022,50(6):878-884. |
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| Authors: | LIU Ying ZHU Jun |
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| Abstract: | Using the observation of CE 318 sunphotometer at Lhasa and QOMS_CAS stations in Tibet Plateau, the impact of biomass burning transportation on the aerosol optical radiation properties over the Tibet Plateau is studied during a case of April 2 to 5, 2012. Besides, the possible aerosol sources are analyzed with the satellite remote sensing products and backward trajectory model. The results show that the dominant aerosol types at Lhasa and QOMS_CAS stations changed to biomass burning aerosol. The extinction of aerosol particles increased,AOD (Aerosol Optical Depth) increased, and the maximum AOD of Lhasa and QOMS_CAS sites were 0.4 and 0.29. Aerosol size decreased, EAE(Extinction Angstrom Exponent)>1.5, aerosol absorption increased, AAE (Absorption Angstrom Exponent) >1.3, and the volume concentration of fine mode particles increased. The peak radius of fine mode particles decreased. The aerosol direct radiation forcing shows that aerosol effect of cooling the top of the atmosphere and the surface at Lhasa and QOMS_CAS stations strengthened, and the effect of heating the atmosphere also strengthened. The possible sources of smoke aerosol were the transportation of biomass burning from Northeast India, Nepal and Bhutan in South Asia. |
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| Keywords: | biomass burning Tibet Plateau aerosol optical and radiation characteristic |
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