Observations and Atmospheric Simulations of Trifluoroacetate (TFA) in Precipitation and Surface Waters in Switzerland

This record contains observations and simulations of trifluoroacetate (TFA) concentrations in Swiss precipitation and surface waters as presented by Henne et al., (2025). All relevant description of observational methods, sampling strategies and simulation details can be found there. Relevant metadata is contained within the individual files. A short summary is given below. Licence, fair use and liability: The licensing conditions of the CC BY 4.0 licence apply. Under this licence derived products and redistribution are allowed, but you are required to always inform users of the original source of the data used, refer them to the licence text and the original source for possible updates or uploads. Use of the data requires proper reference and citation (including the provided DOI). Should you use this data for publication(s) please contact the data creators and inform them abou the publication and possibly grant them co-authorship or acknowledge them appropriately if this data set contributes substantially to the publication. The data product is without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose, title and non-infringement. In no event shall the copyright holders or anyone distributing the data product be liable for any damages or other liability, whether in contract, tort or otherwise, arising from, out of or in connection with the data product. Contained files: Swiss_TFA_observations_BAFU_20240725.xlsx: Individual TFA observations for different sample types and locations. Format: excel spreadsheet (xlsx) Relevant columns: Type, type of sample location and media, possible values: precipitation, Surface water Lake, Surface water River PointOfMeasurement_ID, site identifier, given as character PointOfMeasurement_Name, site full name, given as character Coord_X, site location x position in Swiss LV95 coordinates Coord_Y, site location y position in Swiss LV95 coordinates Sampling Type, type of sample collection, possible values: Total sample, Grab sample, Total sample - flow proportional, Total sample - time proportional Compound, analysed compound, possible values: TFA, reported as as trifluoroacetic acid (protonated, molar mass 114 g/mol). Value, concentration of analysed compound, given as float Units, concentration units, possible vlaues: ug/l TFA measurement technique was described by Scheurer et al. (2017) FLEXPART_simulations_at_sites_daily.nc: Simulated time series of HFO-1234yf and degradation products at selected sites Format: netcdf 4 Model variables HFO_1234yf: atmospheric mole fractions TFA_WD: TFA deposited through wet deposition TFA_DD: TFA deposited through dry deposition TFA_rain: TFA concentration in rainwater FLEXPART_simulations_monthly.nc: Simulated HFO-1234yf mole fraction and deposition of degradation products Format: netcdf 4 Model variables HFO_1234yf: atmospheric mole fractions TFA_WD: TFA deposited through wet deposition TFA_DD: TFA deposited through dry deposition TFA_rain: TFA concentration in rainwater TFA_deposition_from_longLived_compounds.nc: Simulated monthly TFA deposition rates from degradation of long-lived HCFC/HFCs Format: netcdf 4 Model variables (compound <cmp> stands for each treated HCFC/HFC and 'Total' for the sum over all compounds): <cmp>_min: TFA deposition rate given minimal TFA yields (northern hemisphere average) <cmp>_max: TFA deposition rate given maximal TFA yields (northern hemisphere average) <cmp>_mean: TFA deposition rate given mean TFA yields (northern hemisphere average)