Dataset Open Access

Combined SMOS and SMAP sea ice thickness Arctic

Schmitt, Amelie; Kaleschke, Lars


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{
  "DOI": "10.5281/zenodo.1631856", 
  "abstract": "<p>This data set contains Arctic sea ice thicknesses derived from L-band passive microwave brightness temperatures. For this purpose, brightness temperatures at 40&deg; incidence angle from the SMOS (Soil Moisture and Ocean Salinity) and SMAP (Soil Moisture Active Passive) satellites were combined to a homogenised data set (see also related data sets). Sea ice thicknesses were then derived using the algorithm described in Tian-Kunze et al. (2014).</p>\n\n<p>Data are generally produced for the freeze-up period from 15 October to 15 April. This data set contains data from on 1 April 2015 (first available SMAP data) to 15 April 2015 and for the winter seasons 2015/16 to 2017/18.</p>\n\n<p>A detailed description of the data set can be found Schmitt and Kaleschke (2018) and in the document <em>1_Documentation_Combined_SIT.pdf</em>.</p>\n\n<p><strong>Please note</strong>: Sea ice thicknesses from L-band are most suitable for thin ice and reach saturation for thicker sea ice (above 0.5 m - 1 m, depending on ice salinity and temperature). Thickness values with a saturation ratio of 100 % should be discarded (depending on the application)!</p>\n\n<p>Version 1.0 of this data set is based on SMOS version v620 and SMAP version 3 data.</p>\n\n<p>The files contain the following data fields:<br>\n<strong>sea_ice_thickness</strong> - sea ice thickness with post-processing to account for the thickness distribution<br>\n<strong>plane_layer_thickness</strong> - sea ice thickness using the plane layer assumption<br>\n<strong>thickness_uncertainty_upper</strong> - upper limit of the sea ice thickness uncertainty interval<br>\n<strong>thickness_uncertainty_lower</strong> - lower limit of the sea ice thickness uncertainty interval<br>\n<strong>saturation_ratio</strong> - ratio of plane layer thickness and maximum retrievable thickness (%)<br>\n<strong>TB_intensity</strong> - brightness temperature intensity combined from SMOS and SMAP at 40&deg; incidence angle</p>\n\n<p>The grid coordinates are provided as a separate file <em>Latlon_e12.5.nc</em></p>", 
  "author": [
    {
      "family": "Schmitt, Amelie"
    }, 
    {
      "family": "Kaleschke, Lars"
    }
  ], 
  "id": "1631856", 
  "issued": {
    "date-parts": [
      [
        2018, 
        11, 
        28
      ]
    ]
  }, 
  "publisher": "Zenodo", 
  "title": "Combined SMOS and SMAP sea ice thickness Arctic", 
  "type": "dataset", 
  "version": "1.0"
}
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