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oe1(光电查) - 科学论文

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  • Improved Cloud Screening Method for the Analysis of Sky Radiometer Measurements and Application to Asian Dust Detection

    摘要： A cloud screening method employing two successive procedures of variability test and coarse mode test was developed, aiming at better elimination of cloud-contaminated data in the sky radiometer retrievals. The performance of the new cloud screening method was evaluated by examining statistical features with cloud coverage observations and lidar measurements. The variability test appeared to effectively eliminate data contaminated by relatively thick low-level clouds, whereas the coarse mode test appeared to eliminate data likely contaminated by thin cirrus-type clouds. Overall, the new method was considered to improve the current Sky Radiometer Network (SKYNET) data. The cloud screening method was then applied to dust detection from sky radiometer measurements. The detection performance was evaluated using surface synoptic observations (SYNOP) dust reports and the yellow sand index from NIES lidar measurements. It was shown that the new method helped to detect dust, effectively eliminating cloud-contaminated signals that were similar to those of the dust.

    关键词： dust,cloud screening,aerosol,SKYNET

    更新于2025-09-23 15:23:52

  • [IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia, Spain (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - A Study on the Aerosol Optical Property Over Validation Sites in Japan for Hisui Atmospherically Corrected Surface Reflectance

    摘要： The HISUI Hyperspectral Imager is being developed by Japanese Ministry of Economy, Trade, and Industry (METI), which will deploy on International Space Station (ISS) Japan Experiment Module (JEM) in FY2019. HISUI Level2 surface reflectance product (L2G) will be also provided for each of the VNIR and SWIR bands as research products. We have a plan of HISUI L2G validation, which includes not only surface reflectance itself also the atmospheric parameters, especially aerosol properties. We already have 3 sites that measures the atmospheric parameters day by day. This research shows the aerosol properties over validation sites in Japan on one of the HISUI calibration and validation activities.

    关键词： Validation,Skyradiometer,Atmospheric correction,HISUI Hyperspectral Imager,SKYNET

    更新于2025-09-23 15:21:21