Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 18, issue 2
Articles | Volume 18, issue 2
https://doi.org/10.5194/amt-18-509-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-18-509-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 2
Research article
 | 
28 Jan 2025
Research article |  | 28 Jan 2025

Development of a Peltier-based chilled-mirror hygrometer, SKYDEW, for tropospheric and lower-stratospheric water vapor measurements

Takuji Sugidachi, Masatomo Fujiwara, Kensaku Shimizu, Shin-Ya Ogino, Junko Suzuki, and Ruud J. Dirksen

Data sets

Sounding Data from SKYDEW hygrometer Takuji Sugidachi https://doi.org/10.5281/zenodo.13957367

Years of the Maritime Continent JAMSTEC https://www.jamstec.go.jp/ymc/campaigns/IOP_YMC-BSM_2021.html

Technical characteristics and GRUAN data processing for the Meisei RS-11G and iMS-100 radiosondes (GRUAN-TD-5) Nobuhiko Kizu et al. https://www.gruan.org/documentation/gruan/td/gruan-td-5

Model code and software

GRUAN Monitor MW41 and the Vaisala RS41 Additional Sensor Interface Rev. 1.4 (2024-04-11) Peter Oelsner and Rico Tietz https://www.gruan.org/documentation/gruan/tn/gruan-tn-8

Python codes for describing the SKYDEW profile Takuji Sugidachi https://doi.org/10.5281/zenodo.14701212

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Short summary
A Peltier-based chilled-mirror hygrometer, SKYDEW, has been developed to measure tropospheric and stratospheric water vapor. Continuous accurate measurements of water vapor are essential for climate monitoring. More than 40 soundings with SKYDEW have been conducted since 2011 to evaluate the performance. The result of soundings at tropical and midlatitudes demonstrated that SKYDEW is able to measure up to an altitude of 20–25 km for daytime soundings and above 25 km for nighttime soundings.
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