Adapting Automatic Water Samplers for the Isotopic Study of Rainfall at High Temporal Resolution.

ABSTRACT:

Rationale

Stable water isotopes in precipitation are powerful tracers of atmospheric processes. Automatic rain samplers are valuable for high temporal resolution isotopic studies but building them from scratch requires significant financial and material resources. A commercial water autosampler has been modified to prevent post-sampling evaporation and to allow for intra-event precipitation sampling.

Methods

New sampling bottles were created by reducing the original volume and opening area. Evaporation tests were carried out on different volumes of water for 72 h under laboratory conditions. These were used to determine the minimum amount of rain to collect to minimize the impact of isotopic fractionation by evaporation. The impact of the autosampler's air moisture saturatio

SUBMITTER: Carton C 

PROVIDER: S-EPMC11886944 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature