Daily MODIS composites of thin-ice thickness and ice-surface temperatures for the Southern Weddell Sea ...

Based upon high-resolution thermal-infrared Moderate-Resolution Imaging Spectroradiometer (MODIS) satellite imagery in combination with ERA-Interim atmospheric reanalysis data, we derived long-term polynya parameters such as polynya area, thin-ice thickness distribution and ice-production rates from...

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Bibliographic Details
Main Authors: Paul, Stephan, Willmes, Sascha, Heinemann, Günther
Format: Dataset
Language:English
Published: PANGAEA 2015
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Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158
Antarctic
Arctic
Austral
Brunt Ice Shelf
The Antarctic
Weddell
Weddell Sea
Antarc*
Ice Shelf
National Snow and Ice Data Center
Sea ice
Online Access:https://dx.doi.org/10.1594/pangaea.848612
https://doi.pangaea.de/10.1594/PANGAEA.848612
Description
Summary:Based upon high-resolution thermal-infrared Moderate-Resolution Imaging Spectroradiometer (MODIS) satellite imagery in combination with ERA-Interim atmospheric reanalysis data, we derived long-term polynya parameters such as polynya area, thin-ice thickness distribution and ice-production rates from daily cloud-cover corrected thin-ice thickness composites. Our study is based on a thirteen year investigation period (2002-2014) for the austral winter (1 April to 30 September) in the Antarctic Southern Weddell Sea. The focus lies on coastal polynyas which are important hot spots for new-ice formation, bottom-water formation and heat/moisture release into the atmosphere. MODIS has the capability to resolve even very narrow coastal polynyas. Its major disadvantage is the sensor limitation due to cloud cover. We make use of a newly developed and adapted spatial feature reconstruction scheme to account for cloud-covered areas. We find the sea-ice areas in front of Ronne and Brunt Ice Shelf to be the most active ... : This data set contains daily MODIS composites from April to September for the time interval from 2002 to 2014. Thin-ice thickness data up to 0.2m are derived from the MOD/MYD29 ice-surface temperature product of the National Snow and Ice Data Center (NSIDC) using a simple surface-energy-balance and thermodynamic sea-ice model. This data is corrected for influence of cloud cover and available for the complete coast line of the Southern Weddell Sea. For details on the procedures, please consult the given reference. This study was funded by the Deutsche Forschungs Gemeinschaft in the framework of the priority program SPP1158 "Antarctic Research with comparative investigations in Arctic ice areas" by grant HE2740/12. ...

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