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Wuttke, Sigrid; Seckmeyer, G; König-Langlo, Gert (2006): (Table 4) Daily mean spectral snow albedo at different wavelengths measured at Neumayer, Antarctica [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.859364, Supplement to: Wuttke, S et al. (2006): Measurements of spectral snow albedo at Neumayer, Antarctica. Annales Geophysicae, 24(1), 7-21, https://doi.org/10.5194/angeo-24-7-2006

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Abstract:
Spectral albedo in high resolution, from 290 to 1050 nm, has been measured at Neumayer, Antarctica, (70°39' S, 8°15' W) during the austral summer 2003/2004. At 500 nm, the spectral albedo nearly reaches unity, with slightly lower values below and above 500 nm. Above 600 nm, the spectral albedo decreases to values between 0.45 and 0.75 at 1000 nm. For one cloudless case an albedo up to 1.01 at 500 nm could be determined. This can be explained by the larger directional component of the snow reflectivity for direct incidence, combined with a slightly mislevelled sensor and the snow surface not being perfectly horizontal. A possible explanation for an observed decline in albedo is an increase in snow grain size. The theoretically predicted increase in albedo with increasing solar zenith angle (SZA) could not be observed. This is explained by the small range of SZA during albedo measurements, combined with the effect of changing snow conditions outweighing the effect of changing SZA. The measured spectral albedo serves as input for radiative transfer models, describing radiation conditions in Antarctica.
Project(s):
Meteorological Long-Term Observations @ AWI (AWI_Meteo)
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas (SPP1158)
Funding:
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Latitude: -70.650000 * Longitude: -8.250000
Date/Time Start: 2004-01-02T00:00:00 * Date/Time End: 2004-01-08T00:00:00
Minimum Elevation: -999.0 m * Maximum Elevation: 40.0 m
Event(s):
Neumayer (WMO89002) * Latitude: -70.650000 * Longitude: -8.250000 * Date/Time: 1993-01-01T00:00:00 * Elevation Start: 40.0 m * Elevation End: -999.0 m * Location: Dronning Maud Land, Antarctica * Campaign: Neumayer_based * Basis: NEUMAYER III * Method/Device: Research station (RS)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 DATE/TIMEDate/TimeWuttke, SigridGeocode
2 Albedo, fractionAlb fracWuttke, Sigrid305 nm
3 Albedo, fractionAlb fracWuttke, Sigrid320 nm
4 Albedo, fractionAlb fracWuttke, Sigrid350 nm
5 Albedo, fractionAlb fracWuttke, Sigrid400 nm
6 Albedo, fractionAlb fracWuttke, Sigrid499 nm
7 Albedo, fractionAlb fracWuttke, Sigrid550 nm
8 Albedo, fractionAlb fracWuttke, Sigrid695 nm
9 Albedo, fractionAlb fracWuttke, Sigrid800 nm
10 Albedo, fractionAlb fracWuttke, Sigrid1000 nm
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
48 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Date/Time		2 
Alb frac
(305 nm)		3 
Alb frac
(320 nm)		4 
Alb frac
(350 nm)		5 
Alb frac
(400 nm)		6 
Alb frac
(499 nm)		7 
Alb frac
(550 nm)		8 
Alb frac
(695 nm)		9 
Alb frac
(800 nm)		10 
Alb frac
(1000 nm)
2004-01-020.950.950.940.95
2004-01-030.970.970.970.980.990.950.900.76
2004-01-040.970.960.970.970.970.960.920.860.71
2004-01-050.990.980.991.001.011.010.980.920.74
2004-01-060.980.970.980.980.970.970.900.830.65
2004-01-080.970.960.960.970.980.970.890.780.50