A quasi-daily pan-Arctic lead product derived from MODIS thermal infrared imagery.

Willmes, Sascha and Heinemann, Günther (2014) A quasi-daily pan-Arctic lead product derived from MODIS thermal infrared imagery. [Poster] In: International Sea Ice Concentration and Thickness Evaluation and Inter-Comparison Workshop. , 18.09.-19.09.2014, Hamburg .

[img]
Preview
Image (Poster)
2014_Willmes-Heinemann_7198670bf8bb8e59ed70e7f9cbb75529.pdf - Presentation
Available under License Creative Commons Attribution Non-commercial.

Download (1919Kb) | Preview

Abstract

Polynyas and leads are key elements of the wintertime Arctic sea-ice cover. They play a crucial role in surface heat loss, potential ice formation and consequently in the seasonal sea-ice budget. We apply and evaluate different lead segmentation techniques base on sea-ice surface temperatures as measured by the Moderate Resolution Imaging Spectroradiometer (MODIS). Daily lead composite maps indicate the presence of cloud artifacts that arise from ambiguities in the segmentation process and shortcomings in the data from thermal infrared image sequences, and applied to daily MODIS data from January to April 2008. The daily lead product can be used to deduct the occurrence, structure and dynamics of wintertime sea-ice leads and to assess seasonal divergence patterns of the Arctic Ocean.

Document Type: Conference or Workshop Item (Poster)
Keywords: Arctic; Sea-ice; MODIS
Related URLs:
Projects: Laptev Sea System, Transdrift
Date Deposited: 20 Jan 2015 12:01
Last Modified: 20 Jan 2015 12:01
URI: http://oceanrep.geomar.de/id/eprint/27024

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...