Michelsen, Nils ; Laube, Gerrit ; Friesen, Jan ; Weise, Stephan M. ; Bait Said, Ali Bakhit Ali ; Müller, Thomas (2019):
Technical note: A microcontroller-based automatic rain sampler for stable isotope studies.
23, In: Hydrology and Earth System Sciences, (6), pp. 2637-2645. Copernicus, ISSN 1607-7938,
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Item Type: | Article |
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Origin: | Secondary publication via sponsored Golden Open Access |
Title: | Technical note: A microcontroller-based automatic rain sampler for stable isotope studies |
Language: | English |
Abstract: | Automatic samplers represent a convenient way to gather rain samples for isotope (δ 18O and δ 2H) and water quality analyses. Yet, most commercial collectors are expensive and do not reduce post-sampling evaporation and the associated isotope fractionation sufficiently. Thus, we have developed a microcontroller-based automatic rain sampler for timer-actuated collection of integral rain samples. Sampling periods are freely selectable (minutes to weeks), and the device is low-cost, simple, robust, and customizable. Moreover, a combination of design features reliably minimizes evaporation from the collection bottles. Evaporative losses were assessed by placing the pre-filled sampler in a laboratory oven with which a diurnal temperature regime (21–31 ◦C) was simulated for 26 weeks. At the end of the test, all bottles had lost less than 1 % of the original water amount, and all isotope shifts were within the analytical precision. These results show that even multi-week field deployments of the device would result in rather small evaporative mass losses and isotope shifts. Hence, we deem our sampler a useful addition to devices that are currently commercially available and/or described in the scientific literature. To enable reproduction, all relevant details on hard- and software are openly accessible. |
Journal or Publication Title: | Hydrology and Earth System Sciences |
Series Volume: | 23 |
Issue Number: | 6 |
Place of Publication: | Darmstadt |
Publisher: | Copernicus |
Classification DDC: | 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften |
Divisions: | 11 Department of Materials and Earth Sciences > Earth Science |
Date Deposited: | 18 Oct 2019 14:05 |
Last Modified: | 13 Dec 2022 09:06 |
Corresponding Links: | |
URN: | urn:nbn:de:tuda-tuprints-91857 |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/9185 |
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