Preprints
https://doi.org/10.5194/amt-2021-374
https://doi.org/10.5194/amt-2021-374
 
23 Feb 2022
23 Feb 2022
Status: this preprint is currently under review for the journal AMT.

Comparison of GRUAN Data Products for Meisei iMS-100 and Vaisala RS92 Radiosondes at Tateno, Japan

Shunsuke Hoshino1, Takuji Sugidachi2, Kensaku Shimizu2, Eriko Kobayashi3, Masatomo Fujiwara4, and Masami Iwabuchi3 Shunsuke Hoshino et al.
  • 1Office of Numerical Prediction Modeling Fundamental Technology, Numerical Prediction Division, Information Infrastructure Department, Japan Meteorological Agency, 1-2 Nagamine, Tsukuba, Ibaraki, 305-0052, Japan
  • 2Meisei Electric Co., Ltd., 2223 Naganumamachi, Isesaki, Gunma, 372-8585, Japan
  • 3Aerological Observatory, 1-2 Nagamine, Tsukuba, Ibaraki, 305-0052, Japan
  • 4Faculty of Environmental Earth Science, Hokkaido University, Kita 10 Nishi 5, Kita-ku, Sapporo, 060-0810, Japan

Abstract. A total of 99 dual soundings with Meisei iMS-100 radiosonde and Vaisala RS92 radiosondes were carried out at Aerological Observatory of the Japan Meteorological Agency, known as Tateno (36.06° N, 140.13° E, 25.2 m; WMO station number 47646), from September 2017 to January 2020. Global Climate Observing System (GCOS) Reference Upper-Air Network (GRUAN) data products (GDP) from both sets of radiosonde data for 57 flights were subsequently created using a documented processing program along with the provision of optimal estimates for measurement uncertainty. Differences in radiosonde performance were then quantified using these GDPs. For daytime observations, the iMS-100 temperature is around 0.5 K lower than RS92-GDP in the stratosphere with significant differences in the upper troposphere and lower stratosphere with RS92-GDP in consideration of combined uncertainties. For nighttime observations, the difference is around −0.1 K and data are mostly in agreement. For relative humidity (RH), iMS-100 is around 1–2 %RH higher in the troposphere and 1 %RH smaller in the stratosphere than RS92, but both GDPs are in agreement for most of the profile. The mean pressure difference is ≤ 0.1 hPa, the wind speed difference is from 0.15 m s−1 to 0.01 m s−1, the wind direction difference ≤ 5°, and the root mean square of vector difference (RMSVD) for wind is ≤ 0.72 m s−1.

Shunsuke Hoshino et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on amt-2021-374', Anonymous Referee #1, 03 Apr 2022
  • RC2: 'Comment on amt-2021-374', Anonymous Referee #2, 07 Apr 2022
  • RC3: 'Comment on amt-2021-374', Anonymous Referee #3, 20 Apr 2022

Shunsuke Hoshino et al.

Shunsuke Hoshino et al.

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Short summary
GRUAN data products from Meisei iMS-100 and Vaisala RS92 were compared with 57 dual sounding data. For daytime observations, the iMS-100 temperature is around 0.5 K lower than RS92-GDP in the stratosphere, but for nighttime observations, the difference is around −0.1 K and data are mostly in agreement. For relative humidity , iMS-100 is around 1–2 %RH higher in the troposphere and 1 %RH smaller in the stratosphere than RS92, but both GDPs are in agreement for most of the profile.