Genthon, Christophe; Veron, Dana; Vignon, Etienne; Madeleine, Jean-Baptiste; Piard, Luc (2021): Water vapor observation at 42 m height above ground at Dome C, East Antarctic plateau (2018-2020) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.939424, In: Genthon, C et al. (2021): Water vapor observation in the lower atmospheric boundary layer at Dome C, East Antarctic plateau [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.939425
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Abstract:
The data set provides 3 years of almost continuous observation of water vapor in the air at 42m height 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.
Keyword(s):
Related to:
Genthon, Christophe; Forbes, Richard; Vignon, Etienne; Gettelman, Andrew; Madeleine, Jean-Baptiste (2018): Comment on “Surface Air Relative Humidities Spuriously Exceeding 100% in CMIP5 Model Output and Their Impact on Future Projections” by K. Ruosteenoja et al. (2017). Journal of Geophysical Research: Atmospheres, 123(16), 8724-8727, https://doi.org/10.1029/2017JD028111
Genthon, Christophe; Piard, Luc; Vignon, Etienne; Madeleine, Jean-Baptiste; Casado, Mathieu; Gallée, Hubert (2017): Atmospheric moisture supersaturation in the near-surface atmosphere at Dome C, Antarctic Plateau. Atmospheric Chemistry and Physics, 17(1), 691-704, https://doi.org/10.5194/acp-17-691-2017
Genthon, Christophe; Veron, Dana; Vignon, Etienne; Madeleine, Jean-Baptiste; Piard, Luc (accepted): Water vapor in cold and clean atmosphere: a 3-year data set in the boundary layer of Dome C, East Antarctic Plateau. Earth System Science Data Discussions, https://doi.org/10.5194/essd-2021-412
Genthon, Christophe; Veron, Dana; Vignon, Etienne; Six, Delphine; Dufresne, Jean Louis; Madeleine, Jean-Baptiste; Sultan, Emmanuelle; Forget, François (2021): 10 years of temperature and wind observation on a 45 m tower at Dome C, East Antarctic plateau. Earth System Science Data, 13, 5731-5746, https://doi.org/10.5194/essd-13-5731-2021
Project(s):
Funding:
Institut Polaire Français Paul Emile Victor (IPEV), grant/award no. 1013: Antartic field data for CALibration and VAlidation of meteorological and climate models and satellite retrievals, Antarctic Coast to Dome C
Coverage:
Latitude: -75.100000 * Longitude: 123.350000
Minimum HEIGHT above ground: 42 m * Maximum HEIGHT above ground: 42 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Date/Time local | Date/Time local | Genthon, Christophe | local time (= UTC+08) | ||
| 2 | HEIGHT above ground | Height | m | Genthon, Christophe | Geocode – mean height over period | |
| 3 | Temperature, air | TTT | °C | Genthon, Christophe | Shielded ventilated ambient air | |
| 4 | Temperature, air | TTT | °C | Genthon, Christophe | Heated shielded air | |
| 5 | Humidity, relative | RH | % | Genthon, Christophe | Humidity-Temperature probe, Vaisala, HMP155 | w.r.t. liquid |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
202740 data points
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