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https://doi.org/10.5194/egusphere-2022-565
https://doi.org/10.5194/egusphere-2022-565
19 Aug 2022
 | 19 Aug 2022

Development of an automated pump efficiency measuring system for ozonesonde utilizing the airbag type flowmeter

Tatsumi Nakano and Takashi Morofuji

Abstract. We have developed a system to automatically measure the flow rate characteristics of the pump built in the ozonesonde, so called “pump efficiency”, under various pressure situations emulating upper air conditions. The system consists of a flow measurement unit that uses a polyethylene airbag, a pressure control unit that reproduces a low-pressure environment, and a control unit that integrates and controls these, and enables fully automatic measurement. The Japan Meteorological Agency (JMA) has been operationally measuring the pump efficiency of the Electrochemical Concentration Cell (ECC) ozonesondes using the system since 2009, and has accumulated a lot of measurement data. From the multiple measurements of the same ozonesonde pump for around eleven years, we confirmed the long-term stability of the system’s performance. The long-term measurement data also showed that the pump flow characteristics of ozonesondes differed among production lots. We evaluated the impacts of the variance in these characteristics on the observed ozone concentration data comparing with the reference ozone profiles, and found that the influences on total ozone estimation was about 4 % to the maximum, the standard deviation per lot was about 1 %, and the standard deviation among lots was about 0.6 %.

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Journal article(s) based on this preprint

27 Mar 2023
Development of an automated pump-efficiency measuring system for ozonesondes utilizing an airbag-type flowmeter
Tatsumi Nakano and Takashi Morofuji
Atmos. Meas. Tech., 16, 1583–1595, https://doi.org/10.5194/amt-16-1583-2023,https://doi.org/10.5194/amt-16-1583-2023, 2023
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We have developed a system that can automatically measure the pump efficiency of the ECC type...
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