(Table 4) Daily mean spectral snow albedo at different wavelengths measured at Neumayer, Antarctica

DOI

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.

Supplement to: Wuttke, Sigrid; Seckmeyer, G; König-Langlo, Gert (2006): Measurements of spectral snow albedo at Neumayer, Antarctica. Annales Geophysicae, 24(1), 7-21

Identifier
DOI https://doi.org/10.1594/PANGAEA.859364
Related Identifier https://doi.org/10.5194/angeo-24-7-2006
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.859364
Provenance
Creator Wuttke, Sigrid; Seckmeyer, G; König-Langlo, Gert ORCID logo
Publisher PANGAEA
Publication Year 2006
Funding Reference German Research Foundation https://doi.org/10.13039/501100001659 Crossref Funder ID 5472008 https://gepris.dfg.de/gepris/projekt/5472008 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 48 data points
Discipline Earth System Research
Spatial Coverage (-8.250 LON, -70.650 LAT); Dronning Maud Land, Antarctica
Temporal Coverage Begin 2004-01-02T00:00:00Z
Temporal Coverage End 2004-01-08T00:00:00Z