Feasibility Study for Future Spaceborne Coherent Doppler Wind Lidar, Part 2: Measurement Simulation Algorithms and Retrieval Error Characterization

被引：15

作者：

Baron, Philippe ^{[1
]}

Ishii, Shoken ^{[1
]}

Okamoto, Kozo ^{[2
]}

Gamo, Kyoka ^{[3
]}

Mizutani, Kohei ^{[1
]}

Takahashi, Chikako ^{[3
]}

Itabe, Toshikazu ^{[1
]}

Iwasaki, Toshiki ^{[4
]}

Kubota, Takuji ^{[5
]}

Maki, Takashi ^{[2
]}

Oki, Riko ^{[5
]}

Ochiai, Satoshi ^{[1
]}

Sakaizawa, Daisuke ^{[5
]}

Satoh, Masaki ^{[6
]}

Satoh, Yohei ^{[7
]}

Tanaka, Taichu Y. ^{[2
]}

Yasui, Motoaki ^{[8
]}

机构：

[1] Natl Inst Informat & Commun Technol, Appl Electromagnet Res Inst, 4-2-1,Nukui Kitamachi, Koganei, Tokyo 1848795, Japan

[2] Japan Meteorol Agcy, Meteorol Res Inst, Tsukuba, Ibaraki, Japan

[3] Fujitsu FIP Corp, Tokyo, Japan

[4] Tohoku Univ, Grad Sch Sci, Sendai, Miyagi, Japan

[5] Japan Aerosp Explorat Agcy, Earth Observat Res Ctr, Tsukuba, Ibaraki, Japan

[6] Univ Tokyo, Kashiwa, Chiba, Japan

[7] Japan Aerosp Explorat Agcy, Satellite Technol Innovat Off, Tsukuba, Ibaraki, Japan

[8] Natl Inst Informat & Commun Technol, Social Innovat Unit, Strateg Program Produce Off, Koganei, Tokyo, Japan

来源：

JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN | 2017年 / 95卷 / 05期

关键词：

Doppler lidar; satellite; remote sensing; wind; aerosol; simulation; BACKSCATTER HETERODYNE LIDAR; DIFFERENTIAL ABSORPTION; AEROSOL OBSERVATIONS; PERFORMANCE; VELOCITY; WEATHER; ACCUMULATION; OPTIMIZATION; PREDICTION; TURBULENCE;

D O I：

10.2151/jmsj.2017-018

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

A feasibility study of tropospheric wind measurements using a coherent Doppler lidar aboard a super low altitude satellite is being conducted in Japan. The considered lidar uses a 2.05 mu m laser light source of 3.75 W. In order to assess the measurement performances, simulations of wind measurements were conducted. The mission definition is presented in a companion paper (Part 1) while, in this paper, we describe the measurement simulator and characterize the errors on the retrieved line-of-sight (LOS) winds. Winds are retrieved from the Doppler-shift of the noisy backscattered signal with a horizontal resolution of 100 km along the orbit track and a vertical resolution between 0.5 and 2 km. Cloud and wind fields are the pseudo-truth of an Observing System Simulation Experiment while aerosol data are from the Model-of-Aerosol-Species-IN-the-Global-AtmospheRe (MASINGAR) constrained with the pseudo-truth wind. We present the results of the analysis of a full month of data in summer time for a near-polar orbiting satellite and a LOS nadir angle of 35 degrees. Below approximate to 8 km, the ratio of good retrievals is 30-55 % and the median LOS wind error is better than 0.6 m s(-1) (1.04 m s(-1) for the horizontal wind). In the upper troposphere, the ratio is less than 15 % in the southern hemisphere and high-latitudes. However, the ratio is still 35 % in the northern Tropics and mid-latitudes where ice-clouds frequently occur. The upper-tropospheric median LOS-wind measurement error is between 1-2 m s(-1) depending on the latitude (1.74-3.5 m s(-1) for the horizontal wind). These errors are dominated by uncertainties induced by spatial atmospheric inhomogeneities.

引用

页码：319 / 342

页数：24