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The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter
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| Zeitschriftentitel: | Annals of Glaciology |
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| Personen und Körperschaften: | , , , , , , , |
| In: | Annals of Glaciology, 56, 2015, 69, S. 263-273 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
International Glaciological Society
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| Schlagwörter: |
| author_facet |
Paul, Stephan Willmes, Sascha Hoppmann, Mario Hunkeler, Priska A. Wesche, Christine Nicolaus, Marcel Heinemann, Günther Timmermann, Ralph Paul, Stephan Willmes, Sascha Hoppmann, Mario Hunkeler, Priska A. Wesche, Christine Nicolaus, Marcel Heinemann, Günther Timmermann, Ralph |
|---|---|
| author |
Paul, Stephan Willmes, Sascha Hoppmann, Mario Hunkeler, Priska A. Wesche, Christine Nicolaus, Marcel Heinemann, Günther Timmermann, Ralph |
| spellingShingle |
Paul, Stephan Willmes, Sascha Hoppmann, Mario Hunkeler, Priska A. Wesche, Christine Nicolaus, Marcel Heinemann, Günther Timmermann, Ralph Annals of Glaciology The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter Earth-Surface Processes |
| author_sort |
paul, stephan |
| spelling |
Paul, Stephan Willmes, Sascha Hoppmann, Mario Hunkeler, Priska A. Wesche, Christine Nicolaus, Marcel Heinemann, Günther Timmermann, Ralph 0260-3055 1727-5644 International Glaciological Society Earth-Surface Processes http://dx.doi.org/10.3189/2015aog69a715 <jats:title>Abstract</jats:title><jats:p>Up to now, snow cover on Antarctic sea ice and its impact on radar backscatter, particularly after the onset of freeze/thaw processes, are not well understood. Here we present a combined analysis of in situ observations of snow properties from the landfast sea ice in Atka Bay, Antarctica, and high-resolution TerraSAR-X backscatter data, for the transition from austral spring (November 2012) to summer (January 2013). The physical changes in the seasonal snow cover during that time are reflected in the evolution of TerraSAR-X backscatter. We are able to explain 76-93% of the spatio-temporal variability of the TerraSAR-X backscatter signal with up to four snowpack parameters with a root-mean-squared error of 0.87-1.62 dB, using a simple multiple linear model. Over the complete study, and especially after the onset of early-melt processes and freeze/thaw cycles, the majority of variability in the backscatter is influenced by changes in snow/ice interface temperature, snow depth and top-layer grain size. This suggests it may be possible to retrieve snow physical properties over Antarctic sea ice from X-band SAR backscatter.</jats:p> The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter Annals of Glaciology |
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| title |
The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter |
| title_unstemmed |
The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter |
| title_full |
The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter |
| title_fullStr |
The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter |
| title_full_unstemmed |
The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter |
| title_short |
The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter |
| title_sort |
the impact of early-summer snow properties on antarctic landfast sea-ice x-band backscatter |
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Earth-Surface Processes |
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http://dx.doi.org/10.3189/2015aog69a715 |
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2015 |
| physical |
263-273 |
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<jats:title>Abstract</jats:title><jats:p>Up to now, snow cover on Antarctic sea ice and its impact on radar backscatter, particularly after the onset of freeze/thaw processes, are not well understood. Here we present a combined analysis of in situ observations of snow properties from the landfast sea ice in Atka Bay, Antarctica, and high-resolution TerraSAR-X backscatter data, for the transition from austral spring (November 2012) to summer (January 2013). The physical changes in the seasonal snow cover during that time are reflected in the evolution of TerraSAR-X backscatter. We are able to explain 76-93% of the spatio-temporal variability of the TerraSAR-X backscatter signal with up to four snowpack parameters with a root-mean-squared error of 0.87-1.62 dB, using a simple multiple linear model. Over the complete study, and especially after the onset of early-melt processes and freeze/thaw cycles, the majority of variability in the backscatter is influenced by changes in snow/ice interface temperature, snow depth and top-layer grain size. This suggests it may be possible to retrieve snow physical properties over Antarctic sea ice from X-band SAR backscatter.</jats:p> |
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| author | Paul, Stephan, Willmes, Sascha, Hoppmann, Mario, Hunkeler, Priska A., Wesche, Christine, Nicolaus, Marcel, Heinemann, Günther, Timmermann, Ralph |
| author_facet | Paul, Stephan, Willmes, Sascha, Hoppmann, Mario, Hunkeler, Priska A., Wesche, Christine, Nicolaus, Marcel, Heinemann, Günther, Timmermann, Ralph, Paul, Stephan, Willmes, Sascha, Hoppmann, Mario, Hunkeler, Priska A., Wesche, Christine, Nicolaus, Marcel, Heinemann, Günther, Timmermann, Ralph |
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| description | <jats:title>Abstract</jats:title><jats:p>Up to now, snow cover on Antarctic sea ice and its impact on radar backscatter, particularly after the onset of freeze/thaw processes, are not well understood. Here we present a combined analysis of in situ observations of snow properties from the landfast sea ice in Atka Bay, Antarctica, and high-resolution TerraSAR-X backscatter data, for the transition from austral spring (November 2012) to summer (January 2013). The physical changes in the seasonal snow cover during that time are reflected in the evolution of TerraSAR-X backscatter. We are able to explain 76-93% of the spatio-temporal variability of the TerraSAR-X backscatter signal with up to four snowpack parameters with a root-mean-squared error of 0.87-1.62 dB, using a simple multiple linear model. Over the complete study, and especially after the onset of early-melt processes and freeze/thaw cycles, the majority of variability in the backscatter is influenced by changes in snow/ice interface temperature, snow depth and top-layer grain size. This suggests it may be possible to retrieve snow physical properties over Antarctic sea ice from X-band SAR backscatter.</jats:p> |
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| spelling | Paul, Stephan Willmes, Sascha Hoppmann, Mario Hunkeler, Priska A. Wesche, Christine Nicolaus, Marcel Heinemann, Günther Timmermann, Ralph 0260-3055 1727-5644 International Glaciological Society Earth-Surface Processes http://dx.doi.org/10.3189/2015aog69a715 <jats:title>Abstract</jats:title><jats:p>Up to now, snow cover on Antarctic sea ice and its impact on radar backscatter, particularly after the onset of freeze/thaw processes, are not well understood. Here we present a combined analysis of in situ observations of snow properties from the landfast sea ice in Atka Bay, Antarctica, and high-resolution TerraSAR-X backscatter data, for the transition from austral spring (November 2012) to summer (January 2013). The physical changes in the seasonal snow cover during that time are reflected in the evolution of TerraSAR-X backscatter. We are able to explain 76-93% of the spatio-temporal variability of the TerraSAR-X backscatter signal with up to four snowpack parameters with a root-mean-squared error of 0.87-1.62 dB, using a simple multiple linear model. Over the complete study, and especially after the onset of early-melt processes and freeze/thaw cycles, the majority of variability in the backscatter is influenced by changes in snow/ice interface temperature, snow depth and top-layer grain size. This suggests it may be possible to retrieve snow physical properties over Antarctic sea ice from X-band SAR backscatter.</jats:p> The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter Annals of Glaciology |
| spellingShingle | Paul, Stephan, Willmes, Sascha, Hoppmann, Mario, Hunkeler, Priska A., Wesche, Christine, Nicolaus, Marcel, Heinemann, Günther, Timmermann, Ralph, Annals of Glaciology, The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter, Earth-Surface Processes |
| title | The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter |
| title_full | The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter |
| title_fullStr | The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter |
| title_full_unstemmed | The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter |
| title_short | The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter |
| title_sort | the impact of early-summer snow properties on antarctic landfast sea-ice x-band backscatter |
| title_unstemmed | The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter |
| topic | Earth-Surface Processes |
| url | http://dx.doi.org/10.3189/2015aog69a715 |