Isotope values of fresh snow samples and daily temperature from Neumayer station in the period 1981-2000
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2003
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| _version_ | 1867171418730397696 |
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| author | Schlosser, Elisabeth Reijmer, Carleen H Oerter, Hans Graf, Wolfgang |
| author_facet | Schlosser, Elisabeth Reijmer, Carleen H Oerter, Hans Graf, Wolfgang |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The relationship between d18O and air temperature at Neumayer station, Ekströmisen, Antarctica, was investigated using fresh-snow samples from the time period 1981-2000. A trajectory model that calculated 5 day-backward trajectories was used to study the influence of different synoptic weather situations and thus of different moisture sources on this correlation. Generally a high correlation between air temperature and d18O was found, but the quality of the d18O-T relationship varied with the different trajectory classes. Additionally, the sea-ice coverage on the travel path of the moist air was considered. The amount of open ocean water underneath the trajectory has a large influence on the d18O-T relationship. For trajectories that lead completely above open water, no significant correlation between d18O and T was found, because mixing with air masses containing additionally evaporated water vapour from the ocean influences the isotope ratio of precipitation. A very high correlation, however, was found for transports over the completely ice-covered Weddell Sea. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_119750 |
| institution | PANGAEA |
| language | en |
| publishDate | 2003 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Isotope values of fresh snow samples and daily temperature from Neumayer station in the period 1981-2000 Schlosser, Elisabeth Reijmer, Carleen H Oerter, Hans Graf, Wolfgang AWI_Glac; Calculated; DATE/TIME; Deuterium excess; Dronning Maud Land, Antarctica; Glaciology @ AWI; Neumayer; Neumayer_based; NEUMAYER III; Research station; RS; Temperature, air; WMO89002; δ18O, water; δ Deuterium The relationship between d18O and air temperature at Neumayer station, Ekströmisen, Antarctica, was investigated using fresh-snow samples from the time period 1981-2000. A trajectory model that calculated 5 day-backward trajectories was used to study the influence of different synoptic weather situations and thus of different moisture sources on this correlation. Generally a high correlation between air temperature and d18O was found, but the quality of the d18O-T relationship varied with the different trajectory classes. Additionally, the sea-ice coverage on the travel path of the moist air was considered. The amount of open ocean water underneath the trajectory has a large influence on the d18O-T relationship. For trajectories that lead completely above open water, no significant correlation between d18O and T was found, because mixing with air masses containing additionally evaporated water vapour from the ocean influences the isotope ratio of precipitation. A very high correlation, however, was found for transports over the completely ice-covered Weddell Sea. |
| title | Isotope values of fresh snow samples and daily temperature from Neumayer station in the period 1981-2000 |
| topic | AWI_Glac; Calculated; DATE/TIME; Deuterium excess; Dronning Maud Land, Antarctica; Glaciology @ AWI; Neumayer; Neumayer_based; NEUMAYER III; Research station; RS; Temperature, air; WMO89002; δ18O, water; δ Deuterium |
| url | https://doi.org/10.1594/PANGAEA.119750 |