Water vapor observation in the lower atmospheric boundary layer at Dome C, East Antarctic plateau

DOI

The data set provides 3 years of almost continuous observation of water vapor in the air at 3 levels in the lowest 42 m above Dome C on the high antarctic plateau, 123° 21' E, 75° 06' S, 3233 m above sea level. Each data is an average over the previous ½ hour. The water vapor content is measured in a heated air flow to avoid that supersaturated air at ambient temperature deposits excess moisture (above 100% with respect to ice) before reaching the humidity sensor. In fact, many reports correspond to significant supersaturation (see references provided). HMP155 thermohygrometers are used, which for the hygrometer natively report relative humidity with respect to liquid water even below 0°C. This is the variable provided in the data set, along with temperature in the heated air flow and ambient temperature. There are several conversion formulae in the literature to convert to e.g. partial pressure and relative humidity with respect to ice. As there is no clear consensus on which should be preferred in the range of temperatures at Dome C, the user is left to carry our her/his own conversions.

Identifier
DOI https://doi.org/10.1594/PANGAEA.939425
Related Identifier IsSupplementTo https://doi.org/10.5194/essd-2021-412
Related Identifier References https://doi.org/10.1029/2017JD028111
Related Identifier References https://doi.org/10.5194/acp-17-691-2017
Related Identifier References https://doi.org/10.5194/essd-13-5731-2021
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.939425
Provenance
Creator Genthon, Christophe ORCID logo; Veron, Dana; Vignon, Etienne ORCID logo; Madeleine, Jean-Baptiste; Piard, Luc
Publisher PANGAEA
Publication Year 2021
Funding Reference Institut Polaire Français Paul Émile Victor https://doi.org/10.13039/501100004796 Crossref Funder ID 1013 Antartic field data for CALibration and VAlidation of meteorological and climate models and satellite retrievals, Antarctic Coast to Dome C
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Publication Series of Datasets; Collection
Format application/zip
Size 3 datasets
Discipline Earth System Research
Spatial Coverage (123.350 LON, -75.100 LAT); Dome C, Antarctica