Rimbu, Norel; Lohmann, Gerrit; König-Langlo, Gert; Necula, Cristian; Ionita, Monica (2012): 30 years of synoptic observations from Neumayer Station with links to datasets. doi:10.1594/PANGAEA.804156, Supplement to: Rimbu, N et al. (2013): Daily to intraseasonal oscillations at Antarctic research station Neumayer. Antarctic Science, 26(02), 193-204, doi:10.1017/S0954102013000540
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High temporal resolution (three hours) records of temperature, wind speed and sea level pressure recorded at Antarctic research station Neumayer (70°S, 8°W) during 1982-2011 are analysed to identify oscillations from daily to intraseasonal timescales. The diurnal cycle dominates the three-hourly time series of temperature during the Antarctic summer and is almost absent during winter. In contrast, the three-hourly time series of wind speed and sea level pressure show a weak diurnal cycle. The dominant pattern of the intraseasonal variability of these quantities, which captures the out-of-phase variation of temperature and wind speed with sea level pressure, shows enhanced variability at timescales of ~ 40 days and ~ 80 days, respectively. Correlation and composite analysis reveal that these oscillations may be related to tropical intraseasonal oscillations via large-scale eastward propagating atmospheric circulation wave-trains. The second pattern of intraseasonal variability, which captures in-phase variations of temperature, wind and sea level pressure, shows enhanced variability at timescales of ~ 35, ~ 60 and ~ 120 days. These oscillations are attributed to the Southern Annular Mode/Antarctic Oscillation (SAM/AAO) which shows enhanced variability at these timescales. We argue that intraseasonal oscillations of tropical climate and SAM/AAO are related to distinct patterns of climate variables measured at Neumayer.
Latitude: -70.650000 * Longitude: -8.250000
Date/Time Start: 1992-01-01T00:00:00 * Date/Time End: 1992-01-01T00:00:00
Minimum Elevation: 42.0 m * Maximum Elevation: 42.0 m
GVN (Georg von Neumayer) * Latitude: -70.650000 * Longitude: -8.250000 * Date/Time: 1992-01-01T00:00:00 * Elevation: 42.0 m * Location: Dronning Maud Land, Antarctica * Campaign: WCRP/GEWEX * Device: Monitoring station (MONS) * Comment: BSRN station no: 13; Surface type: iceshelf; Topography type: flat, rural; Horizon from 1992 to 2009-01: doi:10.1594/PANGAEA.669516; Horizon after 2009-01: doi:10.1594/PANGAEA.757811; Station scientist: Gert König-Langlo (Gert.Koenig-Langlo@awi.de). Station description see hdl:10013/epic.28566.d001
The data collection contains 360 links to meteorological synoptical observations from Neumayer Station. It covers the time period between 1982-01 and 2011-12.
Any user who accepts the BSRN data release guidelines (http://bsrn.awi.de/data/conditions-of-data-release) may ask Gert König-Langlo (Gert.Koenig-Langlo@awi.de) to obtain an account to download these datasets.
1800 data points