Multiyear Ice Concentration, Antarctic, 12.5 km grid, cold seasons 2013-2018 (from satellite)

DOI

The corrected multiyear ice (MYI) concentration product from the University of Bremen, Institute of Environmental Physics (IUP), is being retrieved with a two-step algorithm:(1) A constrained optimisation technique that uses different sets of microwave satellite data and the probability distributions of radiometric signatures of different ice types whose concentration (area fraction) is to be retrieved. This is the Environment Canada Ice Concentration Extractor (ECICE) [Shokr et al. 2008, Shokr and Agnew 2013]. The input data used here are microwave radiometer data at 18 and 37 GHz (horizontal and vertical polarisation) from the instrument AMSR2 (Advanced Microwave Scanning Radiometer 2) on the JAXA satellite GCOM-W1, as well as microwave scatterometer data from ASCAT on the European satellites MetOp-A and -B.(2) Two correction schemes for the output from ECICE in order to correct for anomalous radiometric and backscatter observations. Such anomalies are caused by snow wetness and metamorphism. This happens when air temperature rises and approaches the melting point. Air temperature from meteorological reanalysis data used in one correction scheme and sea ice drift is used in the second [Ye et al. 2016a, 2016b]. The data are gridded on a polar stereographic grid (EPSG code 3412, Antarctic) with 12.5 km grid resolution. Further details are explained in the MYI User Guide (https://seaice.uni-bremen.de/data/MultiYearIce/MYIuserguide.pdf).Caveats: This is the first data set of Antarctic multiyear sea ice. Rough young ice and first year ice might erroneously be detected as MYI, and in the vicinity of grounded icebergs, spurious MYI can occur that further spreads during the freezing season.

Identifier
DOI https://doi.org/10.1594/PANGAEA.909054
Related Identifier https://doi.org/10.1016/j.rse.2012.10.016
Related Identifier https://doi.org/10.1109/tgrs.2008.2000624
Related Identifier https://doi.org/10.1109/TGRS.2015.2503884
Related Identifier https://doi.org/10.3390/rs8050397
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.909054
Provenance
Creator Melsheimer, Christian ORCID logo; Spreen, Gunnar ORCID logo; Ye, Yufang ORCID logo; Shokr, Mohammed
Publisher PANGAEA
Publication Year 2019
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 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 30 data points
Discipline Earth System Research
Spatial Coverage (180.000W, -80.000S, 180.000E, -66.000N)