Ozonesonde in pulse mode preliminary test (Toulouse, May 2011)

A first experiment was conducted on 12 May 2011 at a fixed outdoor place to investigate the behaviour of an ECC ozonesonde (experimental sonde) alternating quiescence (pump motor off) and run (pump motor on) phases, and to evaluate its ability to reproduce correct ozone mole fractions against reference measurements.<br />
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Observing strategy: <br />
The run/quiescence sequences were composed of 10min/10min, 5min/5min and 3min/3min periods during three stages of the test. The reference measurements were (i) a standard (En-Sci Z) ECC ozonesonde working as usual in continuous mode (reference sonde); (ii) a UV-absorption analyzer (TEI 42i).

2011年5月12日，于一处固定户外场地开展了首次实验，旨在探究实验用ECC臭氧探空仪（ECC ozonesonde）的工作特性——该探空仪会交替处于静止（泵机关闭）与运行（泵机开启）阶段，并对照参考测量结果，评估其复现准确臭氧摩尔分数的能力。

观测策略：
本次实验分为三个阶段，各阶段的运行/静止序列分别采用10min/10min、5min/5min及3min/3min的周期时长。参考测量包括：(i) 一台型号为En-Sci Z的标准ECC臭氧探空仪，以常规连续模式工作（作为参考探空仪）；(ii) 一台TEI 42i型紫外吸收分析仪。