Articles | Volume 23, issue 6
https://doi.org/10.5194/hess-23-2637-2019
https://doi.org/10.5194/hess-23-2637-2019
Technical note
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19 Jun 2019
Technical note | Highlight paper |  | 19 Jun 2019

Technical note: A microcontroller-based automatic rain sampler for stable isotope studies

Nils Michelsen, Gerrit Laube, Jan Friesen, Stephan M. Weise, Ali Bakhit Ali Bait Said, and Thomas Müller

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Cited articles

Akers, P. D., Welker, J. M., and Brook, G. A.: Reassessing the role of temperature in precipitation oxygen isotopes across the eastern and central United States through weekly precipitation-day data, Water Resour. Res., 53, 7644–7661, https://doi.org/10.1002/2017WR020569, 2017. 
Allen, S. T., Brooks, J. R., Keim, R. F., Bond, B. J., and McDonnell, J. J.: The role of pre-event canopy storage in throughfall and stemflow by using isotopic tracers, Ecohydrol., 7, 858–868, https://doi.org/10.1002/eco.1408, 2014. 
Allen, S. T., Keim, R. F., and McDonnell, J. J.: Spatial patterns of throughfall isotopic composition at the event and seasonal timescales, J. Hydrol., 522, 58–66, https://doi.org/10.1016/j.jhydrol.2014.12.029, 2015. 
Ankor, M. J., Tyler, J. J., and Hughes, C. E.: Development of an autonomous, monthly and daily, rainfall sampler for isotope research, J. Hydrol., 575, 31–41, https://doi.org/10.1016/j.jhydrol.2019.04.074, 2019. 
Berman, E. S. F., Gupta, M., Gabrielli, C., Garland, T., and McDonnell, J. J.: High-frequency field-deployable isotope analyzer for hydrological applications, Water Resour. Res., 45, W10201, https://doi.org/10.1029/2009WR008265, 2009. 
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Short summary
Most commercial automatic rain samplers are costly and do not prevent evaporation from the collection bottles. Hence, we have developed a microcontroller-based collector enabling timer-actuated integral rain sampling. The simple, low-cost device is robust and effectively minimizes post-sampling evaporation. The excellent performance of the collector during an evaporation experiment in a lab oven suggests that even multi-week field deployments in warm climates are feasible.