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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/73870

    Title: 日本氣象同步衛星 Himawari-8 向日葵八號 之雲微物理參數反演驗證與評估;Evaluation of Retrieved Cloud Microphysical Parameters from Himawari-8 Observation
    Authors: 邱麒豪;Chiu, Chi-Hao
    Contributors: 大氣科學學系
    Keywords: 向日葵八號;雲微物理參數;對流系統;Himawari-8;cloud microphysics parameters;convection system
    Date: 2017-08-24
    Issue Date: 2017-10-27 12:28:04 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 2014年10月日本新一代的氣象同步衛星向日葵八號(Himawari-8)被送上軌道,其搭載涵蓋可見光、近紅外線與紅外線波段的Advanced Himawari Imager (AHI),提供高時間(10分鐘一筆)、高空間(2公里)解析度與多光譜(16個頻道)的觀測。本文將藉由AHI的觀測,反演高時空解析度雲微物理參數,此乃過往繞極衛星所無法提供的資料。隨後並透過被動式觀測的Aqua/MODIS、主動式觀測的CloudSat/CPR與CALIPSO/CALIOP交叉分析與驗證,評估參數的可靠性,期望未來能在一定可信度的情況下利用這些參數,探討雲的輻射效應收與氣候回饋過程。

    ;In October 2014, Japan launched Himawari-8 which is the most advanced geostationary orbit satellite in the world. Himawari-8/AHI provides high quality 16-channels reflectance/radiance data at every 10 minutes temporal resolution from 500 meter to 2 km spatial resolution. Because polar orbit satellite can’t provide the cloud microphysical parameters with high temporal and spatial resolution, this study develops the retrieval system that focuses on the Taiwan and its vicinity from the multichannel observation from geostationary orbit satellite.
    In order to make sure the parameters quality from AHI retrieved, the research compare the retrieved cloud microphysical parameters with NASA EOS A-Train Aqua/MODIS, CloudSat/CPR and CALIPSO/CALIOP cloud products.
    During the onset of Southeast Asia monsoon, the South China Sea (SCS) is the water vapor passage with large scale circulation, owning multiscale weather and climate phenomenon. It also contains rapid evolution for multiscale system, ranging from climate to weather. There are many kind of complex cloud system in summer monsoon onset, hence, the research region is chosen to conduct comprehensive comparison and verification study for retrieved cloud microphysical parameters among both passive and active seniors onboard polar orbiting satellites.
    Initial validation of retrieved cloud microphysical properties indicates that there are good agreement between part of AHI and MODIS cloud-top pressure retrieval. From the cross analysis of active sensor observation, AHI has better CTP retrieval performance because it has better sensitivity in cirrus. Cloud-top pressure, cloud-top height and cloud optical thickness are all shown a reliable and good agreement between AHI and MODIS retrievals. There is discrepancy in cloud droplet effective radius between AHI and MODIS retrieval, in particular, when the cloud is optically thin and ice phase at high altitude.
    Appears in Collections:[大氣物理研究所 ] 博碩士論文

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