TY - JOUR
T1 - Feasibility study for future space-borne coherent doppler wind lidar, part 1
T2 - Instrumental overview for global wind profile observation
AU - Shoken, Ishii
AU - Philippe, Baron
AU - Makoto, Aoki
AU - Kohei, Mizutani
AU - Motoaki, Yasui
AU - Satoshi, Ochiai
AU - Atsushi, Sato
AU - Yohei, Satoh
AU - Takuji, Kubota
AU - Daisuke, Sakaizawa
AU - Riko, OKI
AU - Kozo, Okamoto
AU - Toshiyuki, Ishibashi
AU - Taichu Y, Tanaka
AU - Tsuyoshi T, Sekiyama
AU - Takashi, Maki
AU - Koji, Yamashita
AU - Tomoaki, Nishizawa
AU - Masaki, Satoh
AU - Toshiki, Iwasaki
N1 - Funding Information:
A part of this research was supported by JSPS KAKENHI under Grant Numbers 15K06129 and
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
KW - Doppler wind lidar
KW - Earth observation satellite
KW - Global wind profile observation
KW - Lidar simulator
KW - Numerical weather prediction
KW - Observing system simulation experiment
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U2 - 10.2151/jmsj.2017-017
DO - 10.2151/jmsj.2017-017
M3 - Article
AN - SCOPUS:85031126377
VL - 95
SP - 301
EP - 317
JO - Journal of the Meteorological Society of Japan
JF - Journal of the Meteorological Society of Japan
SN - 0026-1165
IS - 5
ER -