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April 22, 20260 citationsOpen Access

Water vapor measurements throughout the planetary boundary layer (PBL) with the ATMONSYS DIAL: From short-term variability to the calculation of vertical fluxes

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JSJohannes SpeidelHVHannes VogelmannMPMatthias Perfahl

Key Points

  • This research aims to evaluate the capabilities of the ATMONSYS DIAL for measuring water vapor and its variability in the planetary boundary layer.
  • Utilized ATMONSYS DIAL system for water vapor measurements
  • Combined DIAL with Doppler wind lidars to capture vertical fluxes
  • Conducted intercomparisons of humidity lidars and radiosondes
  • Observed short-term variability of humidity in the PBL was approximately 20%
  • Successfully measured vertical fluxes of latent heat
  • Identified drift in radiosondes that affects measurement accuracy

Abstract

Water vapor measurements from the newly developed ATMONSYS DIAL system are presented. Besides the presentation of the overall system capabilities, we show that the system, in combination with Doppler wind lidars, is able to capture vertical fluxes of latent heat. In addition, we show a substantial natural short-term relative variability of humidity inside the PBL of ~20%. Finally, an extended intercomparison of 3 humidity lidars and radiosondes shows that the drift of the radiosondes can have substantial implications

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Cite This Study

Speidel et al. (2026) studied this question.

synapsesocial.com/papers/69e865b56e0dea528ddea37dhttps://doi.org/10.5445/ir/1000192371
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