An effective method for retrieval of three kinds of aerosol properties focusing on a coming GCOM-C1 / SGLI in December of 2017
An effective method for retrieval of three kinds of aerosol properties focusing on a coming GCOM-C1 / SGLI in December of 2017
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DOI：
10.1117/12.2278159
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发表时间：
2017-10
期刊：
影响因子：
--
通讯作者：
I. Sano;S. Mukai;M. Nakata
中科院分区：
文献类型：
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作者：
I. Sano;S. Mukai;M. Nakata
这项工作描述了一种气溶胶反演算法，重点是安装在即将到来的全球变化观测任务第一颗气候卫星(GCOM-C1)上的第二个全球成像仪(SGLI)。SGLI具有测量地球大倾角(±45°)红光(678 Nm)和近红外(868 Nm)反射率的半斯托克斯分量(I、Q和U)的功能。沿着轨道方向。SGLI还测量从最低点位置到远红外(12μm)的近紫外线(380 Nm)的总反射率。SGLI的气溶胶反演算法利用倾斜路径方向的双通道偏振信息和蓝色通道(443 Nm)的最低点反射率来估计气溶胶光学厚度、ängström指数和粒子的单次散射反照率。该算法通过地球反射率(POLDER)测量的偏振和方向性进行了测试。
This work describes an algorithm for aerosol retrieval focusing on the second global imager (SGLI) mounted on the forthcoming global change observation mission - 1st climate satellite (GCOM-C1). The SGLI has a function to measure semi-Stokes components (I, Q, and U) of the Earth's reflectances at red (678 nm) and near infrared (868 nm) with large tilting angle (±45 deg.) along track direction. The SGLI also measures total reflectance from nadir looking position from near UV (380 nm) to far infrared (12 μm). The aerosol retrieval algorithm for the SGLI uses two-channel polarization information from slant path direction as well as nadir looking reflectance at blue channel (443 nm) to estimate aerosol optical thickness, Ångström exponent, and single scattering albedo of particles. The algorithm is tested by the polarization and directionality of the Earth's reflectances (POLDER) measurements.