Feasibility study for future spaceborne coherent Doppler wind lidar, part 2: Measurement simulation algorithms and retrieval error characterization

Philippe Baron, Shoken Ishii, Kozo Okamoto, Kyoka Gamo, Kohei Mizutani, Chikako Takahashi, Toshikazu Itabe, Toshiki Iwasaki, Takuji Kubota, Takashi Maki, Riko Oki, Satoshi Ochiai, Daisuke Sakaizawa, Masaki Satoh, Yohei Satoh, Taichu Y. Tanaka, Motoaki Yasui

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8 Citations (Scopus)


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 µm 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 of35°. Below ≈ 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.

Original languageEnglish
Pages (from-to)3l9-342
JournalJournal of the Meteorological Society of Japan
Issue number5
Publication statusPublished - 2017


  • Aerosol
  • Doppler lidar
  • Remote
  • Satellite
  • Sensing
  • Simulation
  • Wind

ASJC Scopus subject areas

  • Atmospheric Science


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