干旱区生态环境知识资源中心(Arid): The New Potential of Deep Convective Clouds as a Calibration Target for a Geostationary UV/VIS Hyperspectral Spectrometer

Arid

DOI	10.3390/rs12030446
	The New Potential of Deep Convective Clouds as a Calibration Target for a Geostationary UV/VIS Hyperspectral Spectrometer
	Lee, Yeeun 1; Ahn, Myoung-Hwan 1; Kang, Mina 2
通讯作者	Ahn, Myoung-Hwan
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2020
卷号	12 期号:3
英文摘要	As one of geostationary earth orbit constellation for environmental monitoring over the next decade, the Geostationary Environment Monitoring Spectrometer (GEMS) has been designed to observe the Asia-Pacific region to provide information on atmospheric chemicals, aerosols, and cloud properties. In order to continuously monitor sensor performance after its launch in early 2020, we suggest in this paper deep convective clouds (DCCs) as a possible target for the vicarious calibration of the GEMS, the first ultraviolet and visible hyperspectral sensor onboard a geostationary satellite. The Tropospheric Monitoring Instrument (TROPOMI) and the Ozone Monitoring Instrument (OMI) are used as a proxy for GEMS, and a conventional DCC-detection approach applying a thermal threshold test is used for DCC detection based on collocations with the Advanced Himawari Imager (AHI) onboard the Himawari-8 geostationary satellite. DCCs are frequently detected over the GEMS observation area at an average of over 200 pixels within a single observation scene. Considering the spatial resolution of the GEMS (3.5 8 km(2)), which is similar to the TROPOMI and its temporal resolution (eight times a day), the availability of DCCs is expected to be sufficient for the vicarious calibration of the GEMS. Inspection of the DCC reflectivity spectra estimated from OMI and TROPOMI data also shows promising results. The estimated DCC spectra are in good agreement within a known uncertainty range with comparable spectral features even with different observation geometries and sensor characteristics. When DCC detection is improved further by applying both visible and infrared tests, the variability of DCC reflectivity from TROPOMI data is reduced from 10% to 5%. This is mainly due to the efficient screening out of cold, thin cirrus clouds in the visible test and of bright, warm clouds in the infrared test. Precise DCC detection is also expected to contribute to the accurate characterization of cloud reflectivity, which will be investigated further in future research.
英文关键词	GEMS UV VIS hyperspectral data deep convective cloud vicarious calibration OMI TROPOMI
类型	Article
语种	英语
国家	South Korea
开放获取类型	Green Published, gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000515393800105
WOS关键词	RADIATIVE-TRANSFER ; SATELLITE ; RETRIEVAL ; TRMM ; VALIDATION ; RESOLUTION ; CHANNELS ; RAYLEIGH ; AEROSOL ; DESERT
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315416
作者单位	1.Ewha Womans Univ, Dept Climate & Energy Syst Engn, 52 Ewhayeodae Gil, Seoul 03760, South Korea; 2.Ewha Womans Univ, Dept Atmospher Sci & Engn, 52 Ewhayeodae Gil, Seoul 03760, South Korea
推荐引用方式 GB/T 7714	Lee, Yeeun,Ahn, Myoung-Hwan,Kang, Mina. The New Potential of Deep Convective Clouds as a Calibration Target for a Geostationary UV/VIS Hyperspectral Spectrometer[J],2020,12(3).
APA	Lee, Yeeun,Ahn, Myoung-Hwan,&Kang, Mina.(2020).The New Potential of Deep Convective Clouds as a Calibration Target for a Geostationary UV/VIS Hyperspectral Spectrometer.REMOTE SENSING,12(3).
MLA	Lee, Yeeun,et al."The New Potential of Deep Convective Clouds as a Calibration Target for a Geostationary UV/VIS Hyperspectral Spectrometer".REMOTE SENSING 12.3(2020).