Retrieval of Melt Pond Coverage from MODIS using Optimal Estimation
Melt pond coverage on sea ice is an important influence on sea ice albedo reduction during the summer and can also affect the monitoring of sea ice extent, sea ice models and sea ice forecasting. Techniques to estimate melt pond coverage from global satellites have been developed in order to provide...
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The University of Edinburgh
2011
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ftunivedinburgh:oai:era.ed.ac.uk:1842/5190 2024-06-09T07:49:26+00:00 Retrieval of Melt Pond Coverage from MODIS using Optimal Estimation Dodd, Emma Merchant, Chris 24/11/2011 application/pdf http://hdl.handle.net/1842/5190 en eng The University of Edinburgh http://hdl.handle.net/1842/5190 Melt Ponds MODIS Sea Ice CASI MSc Geographical Information Science GIS Thesis or Dissertation Masters MSc Master of Science 2011 ftunivedinburgh 2024-05-10T03:12:17Z Melt pond coverage on sea ice is an important influence on sea ice albedo reduction during the summer and can also affect the monitoring of sea ice extent, sea ice models and sea ice forecasting. Techniques to estimate melt pond coverage from global satellites have been developed in order to provide large scale information on melt ponds, but these techniques have limitations. In this study a new approach to estimating melt pond coverage from MODIS data was developed, based on Optimal Estimation, to try and overcome these limitations using more spectral information. The technique was applied to a MODIS image of sea ice off the north coast of Svalbard for the 8th August 2003 and validated using CASI images. Comparison of the estimated results with actual results showed an error in melt pond coverage estimation of 1.1%. The technique was then applied to Svalbard sea ice over the 2003 melt season to produce an estimate of melt pond coverage evolution. This melt pond evolution showed a similar general trend to previous observations of melt pond evolution, with rapidly increasing melt pond coverage at the start of the melt season until maximum melt pond coverage before a steady decrease in melt pond coverage until freeze up in late August. The developed technique provides a new approach to melt pond coverage estimation but there is a lot of uncertainty about the accuracy of the produced results so conclusions about the usefulness of this new technique cannot be drawn without further study. Master Thesis Sea ice Svalbard Edinburgh Research Archive (ERA - University of Edinburgh) Svalbard |
institution |
Open Polar |
collection |
Edinburgh Research Archive (ERA - University of Edinburgh) |
op_collection_id |
ftunivedinburgh |
language |
English |
topic |
Melt Ponds MODIS Sea Ice CASI MSc Geographical Information Science GIS |
spellingShingle |
Melt Ponds MODIS Sea Ice CASI MSc Geographical Information Science GIS Dodd, Emma Retrieval of Melt Pond Coverage from MODIS using Optimal Estimation |
topic_facet |
Melt Ponds MODIS Sea Ice CASI MSc Geographical Information Science GIS |
description |
Melt pond coverage on sea ice is an important influence on sea ice albedo reduction during the summer and can also affect the monitoring of sea ice extent, sea ice models and sea ice forecasting. Techniques to estimate melt pond coverage from global satellites have been developed in order to provide large scale information on melt ponds, but these techniques have limitations. In this study a new approach to estimating melt pond coverage from MODIS data was developed, based on Optimal Estimation, to try and overcome these limitations using more spectral information. The technique was applied to a MODIS image of sea ice off the north coast of Svalbard for the 8th August 2003 and validated using CASI images. Comparison of the estimated results with actual results showed an error in melt pond coverage estimation of 1.1%. The technique was then applied to Svalbard sea ice over the 2003 melt season to produce an estimate of melt pond coverage evolution. This melt pond evolution showed a similar general trend to previous observations of melt pond evolution, with rapidly increasing melt pond coverage at the start of the melt season until maximum melt pond coverage before a steady decrease in melt pond coverage until freeze up in late August. The developed technique provides a new approach to melt pond coverage estimation but there is a lot of uncertainty about the accuracy of the produced results so conclusions about the usefulness of this new technique cannot be drawn without further study. |
author2 |
Merchant, Chris |
format |
Master Thesis |
author |
Dodd, Emma |
author_facet |
Dodd, Emma |
author_sort |
Dodd, Emma |
title |
Retrieval of Melt Pond Coverage from MODIS using Optimal Estimation |
title_short |
Retrieval of Melt Pond Coverage from MODIS using Optimal Estimation |
title_full |
Retrieval of Melt Pond Coverage from MODIS using Optimal Estimation |
title_fullStr |
Retrieval of Melt Pond Coverage from MODIS using Optimal Estimation |
title_full_unstemmed |
Retrieval of Melt Pond Coverage from MODIS using Optimal Estimation |
title_sort |
retrieval of melt pond coverage from modis using optimal estimation |
publisher |
The University of Edinburgh |
publishDate |
2011 |
url |
http://hdl.handle.net/1842/5190 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
Sea ice Svalbard |
genre_facet |
Sea ice Svalbard |
op_relation |
http://hdl.handle.net/1842/5190 |
_version_ |
1801381988759764992 |