FY-3星紫外臭氧总量探测仪(TOU)监测大气臭氧及吸收性气溶胶

Ozone and Absorbing Aerosol Measurements by Ultraviolet Total Ozone Unit (TOU) of FY-3 Satellites

    摘要
  • 摘要: FY-3卫星上搭载的紫外臭氧总量探测仪（Total Ozone Unit，TOU）是我国首台自主研制的用于全球臭氧总量监测的仪器，自2008年5月至今已有3台仪器搭载在气象卫星（FY-3A/FY-3B/FY-3C）上成功发射并在轨运行。TOU利用紫外波段进行臭氧总量反演，以获得全球臭氧的分布及其变化。2013年，针对我国灰霾、沙尘等气溶胶污染事件频发的环境问题，TOU紫外探测数据被成功用于吸收性气溶胶指数（AAI）的反演，之后TOU被用于我国吸收性气溶胶污染事件的监测，为沙尘、灰霾等的预报提供监测数据。对TOU的数据和产品的质量和应用进行了介绍，包括L1B数据、臭氧总量产品及AAI指数。在此基础上，根据现有仪器的不足，对后续仪器的发展方向进行了阐述。

     

    Abstract: Total Ozone Unit (TOU) is one of the main instruments on the FY-3A/B/C satellites and thefirst instruments in China to monitor daily total ozone coverage globally. They have been in orbit since May 2008. Total ozone is retrieved by ultraviolet radiance to observe global ozone distribution and its variation. Then, the absorbing aerosol index (AAI) is retrieved using 331 nm and 360 nm. Data from 2013 were used to observe atmospheric pollution such as smog, dust storm, and biomass burning in China.In this paper, the quality and application of TOU data are shown and discussed, which include L1B radiance, total zone, and AAI.The direction of future instruments is discussed.

     

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