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Feasibility study for future space-borne coherent doppler wind lidar,part 1: Instrumental overview for global wind profile observation
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نویسنده
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shoken i. ,philippe b. ,makoto a. ,kohei m. ,motoaki y. ,satoshi o. ,atsushi s. ,yohei s. ,takuji k. ,daisuke s. ,riko o. ,kozo o. ,toshiyuki i. ,taichu y t. ,tsuyoshi t s. ,takashi m. ,koji y. ,tomoaki n. ,masaki s. ,toshiki i.
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منبع
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journal of the meteorological society of japan - 2017 - دوره : 95 - شماره : 5 - صفحه:301 -317
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چکیده
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A working group is studying the feasibility of a future japanese space-borne coherent doppler wind lidar (cdwl) for global wind profile observation. this study is composed of two companion papers: an instrumental overview of the space-borne cdwl for global wind profile observation (part 1),and the wind measurement performance (error and bias) investigated using a full-fledged space-borne cdwl simulator (part 2). this paper aims to describe the future space-borne cdwl in terms of technical points and observation user requirements. the future mission concept is designed to have two looks for vector wind measurement with vertical resolutions of 0.5 (lower troposphere: 0 – 3 km),1 (middle troposphere: 3 – 8 km),and 2 km (upper troposphere: 8 – 20 km) and horizontal resolution of < 100 km along a satellite. the altitude and orbit of the satellite arediscussed from a scientific viewpoint. the candidate altitude and orbit of the satellite are 220 km and an inclination angle of 96.4° (polar orbit) or 35.1° (low-inclination-angle orbit). the technical requirements of the space-borne cdwl are a single-frequency 2-μm pulse laser with an average laser power of 3.75 w,two effective 40-cm-diameter afocal telescopes,a wide-bandwidth (> 3.4 ghz) detector,a high-speed analog-to-digital converter,and a systematic lidar efficiency of 0.08. the space-borne cdwl looks at two locations at a nadir angle of 35° at two azimuth angles of 45° and 135° (225° and 315°) along the satellite track. the future space-borne cdwl wind profile observation will fill the gap of the current global wind observing systems and contribute to the improvement of the initial conditions for numerical weather prediction (nwp),the prediction of typhoons and heavy rain,and various meteorological studies. © 2017,meteorological society of japan. all rights reserved.
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کلیدواژه
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Doppler wind lidar; Earth observation satellite; Global wind profile observation; Lidar simulator; Numerical weather prediction; Observing system simulation experiment
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آدرس
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applied electromagnetic research institute,national institute of information and communications technology,koganei, Japan, applied electromagnetic research institute,national institute of information and communications technology,koganei, Japan, applied electromagnetic research institute,national institute of information and communications technology,koganei, Japan, applied electromagnetic research institute,national institute of information and communications technology,koganei, Japan, applied electromagnetic research institute,national institute of information and communications technology,koganei, Japan, applied electromagnetic research institute,national institute of information and communications technology,koganei, Japan, graduate department of environmental information engineering,tohoku institute of technology,sendai,japan,national institute of information and communications technology,koganei, Japan, japan aerospace exploration agency,tsukuba, Japan, japan aerospace exploration agency,tsukuba, Japan, japan aerospace exploration agency,tsukuba, Japan, japan aerospace exploration agency,tsukuba, Japan, national institute of information and communications technology,koganei,japan,meteorological research institute,japan meteorological agency,tsukuba, Japan, meteorological research institute,japan meteorological agency,tsukuba, Japan, meteorological research institute,japan meteorological agency,tsukuba, Japan, meteorological research institute,japan meteorological agency,tsukuba, Japan, meteorological research institute,japan meteorological agency,tsukuba, Japan, numerical prediction division,japan meteorological agency,chiyoda, Japan, atmospheric environment division,national institute for environmental studies,tsukuba, Japan, atmosphere and ocean research institute,the university of tokyo,tokyo, Japan, graduate school of science,tohoku university,sendai,japan,meteorological satellite center of japan meteorological agency,tokyo, Japan
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Authors
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