Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 17, issue 24
Articles | Volume 17, issue 24
https://doi.org/10.5194/amt-17-7097-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-17-7097-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 24
Research article
 | 
19 Dec 2024
Research article |  | 19 Dec 2024

An economical tunable diode laser spectrometer for fast-response measurements of water vapor in the atmospheric boundary layer

Emily D. Wein, Lars E. Kalnajs, and Darin W. Toohey

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Short summary
We describe a low-cost and small research-grade spectrometer for measurements of water vapor in the boundary layer. The instrument uses small Arduino microcontrollers and inexpensive laser diodes to reduce cost while maintaining high performance comparable to more expensive instruments. Performance was assessed with intercomparisons between commercially available instruments outdoors. The design's simplicity, performance, and price point allow it to be accessible to a variety of users.
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