The influence of spatial variability of polar firn on microwave emission
Precise measurements of snow structural parameters and stratigraphy are essential to understand and model the radiative properties of the snow cover. However, most snow measurements are limited in spatial resolution and by extensive measurement times, which particularly constrains their applicabilit...
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ftawi:oai:epic.awi.de:37205 2023-05-15T13:40:26+02:00 The influence of spatial variability of polar firn on microwave emission Proksch, Martin Löwe, Henning Weißbach, Stefanie Schneebeli, Martin 2014-04-29 https://epic.awi.de/id/eprint/37205/ https://hdl.handle.net/10013/epic.44895 unknown Proksch, M. , Löwe, H. , Weißbach, S. and Schneebeli, M. (2014) The influence of spatial variability of polar firn on microwave emission , EGU General Assembly, 27 April 2014 - 2 May 2014 . hdl:10013/epic.44895 EPIC3EGU General Assembly, 2014-04-27-2014-05-02 Conference notRev 2014 ftawi 2021-12-24T15:40:12Z Precise measurements of snow structural parameters and stratigraphy are essential to understand and model the radiative properties of the snow cover. However, most snow measurements are limited in spatial resolution and by extensive measurement times, which particularly constrains their applicability in harsh polar environments. For this reason, we developed a statistical model to derive three major snow structural parameters, density, correlation length and specific surface area solely from a portable, high-resolution penetrometer. We demonstrate the potential of the method by a 25 m long and 1.1 m deep transect through Antarctic firn at Kohnen Station, Antarctica, which reveals the stratigraphic features of the firn clearly. Based on these data, we run the Microwave Emission Model of Layered Snowpacks (MEMLS) and analyze the influence of the spatial variability of the firn around Kohnen Station on the microwave emission of the snowpack. We discuss the potential and limitations of the method and highlight the need for spatially distributed, quantitative measurements for modeling the microwave emission from polar snow and firn. Conference Object Antarc* Antarctic Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Kohnen ENVELOPE(0.000,0.000,-75.000,-75.000) Kohnen Station ENVELOPE(0.000,0.000,-75.000,-75.000) |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
Precise measurements of snow structural parameters and stratigraphy are essential to understand and model the radiative properties of the snow cover. However, most snow measurements are limited in spatial resolution and by extensive measurement times, which particularly constrains their applicability in harsh polar environments. For this reason, we developed a statistical model to derive three major snow structural parameters, density, correlation length and specific surface area solely from a portable, high-resolution penetrometer. We demonstrate the potential of the method by a 25 m long and 1.1 m deep transect through Antarctic firn at Kohnen Station, Antarctica, which reveals the stratigraphic features of the firn clearly. Based on these data, we run the Microwave Emission Model of Layered Snowpacks (MEMLS) and analyze the influence of the spatial variability of the firn around Kohnen Station on the microwave emission of the snowpack. We discuss the potential and limitations of the method and highlight the need for spatially distributed, quantitative measurements for modeling the microwave emission from polar snow and firn. |
format |
Conference Object |
author |
Proksch, Martin Löwe, Henning Weißbach, Stefanie Schneebeli, Martin |
spellingShingle |
Proksch, Martin Löwe, Henning Weißbach, Stefanie Schneebeli, Martin The influence of spatial variability of polar firn on microwave emission |
author_facet |
Proksch, Martin Löwe, Henning Weißbach, Stefanie Schneebeli, Martin |
author_sort |
Proksch, Martin |
title |
The influence of spatial variability of polar firn on microwave emission |
title_short |
The influence of spatial variability of polar firn on microwave emission |
title_full |
The influence of spatial variability of polar firn on microwave emission |
title_fullStr |
The influence of spatial variability of polar firn on microwave emission |
title_full_unstemmed |
The influence of spatial variability of polar firn on microwave emission |
title_sort |
influence of spatial variability of polar firn on microwave emission |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/37205/ https://hdl.handle.net/10013/epic.44895 |
long_lat |
ENVELOPE(0.000,0.000,-75.000,-75.000) ENVELOPE(0.000,0.000,-75.000,-75.000) |
geographic |
Antarctic Kohnen Kohnen Station |
geographic_facet |
Antarctic Kohnen Kohnen Station |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
EPIC3EGU General Assembly, 2014-04-27-2014-05-02 |
op_relation |
Proksch, M. , Löwe, H. , Weißbach, S. and Schneebeli, M. (2014) The influence of spatial variability of polar firn on microwave emission , EGU General Assembly, 27 April 2014 - 2 May 2014 . hdl:10013/epic.44895 |
_version_ |
1766134353372381184 |