Derivation and evaluation of a new extinction coefficient for use with the n-HUT snow emission model
In this study, snow slab data collected from the Arctic Snow Microstructure Experiment were used in conjunction with a six-directional flux coefficient model to calculate individual slab absorption and scattering coefficients. These coefficients formed the basis for a new semiempirical extinction co...
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ftunivreading:oai:centaur.reading.ac.uk:88639 2024-06-23T07:50:28+00:00 Derivation and evaluation of a new extinction coefficient for use with the n-HUT snow emission model Maslanka, Will Sandells, Melody Gurney, Robert Lemmetyinen, Juha Leppanen, Leena Kontu, Anna Matzl, Margret Rutter, Nick Watts, Tom Kelly, Richard 2019-06-06 text https://centaur.reading.ac.uk/88639/ https://centaur.reading.ac.uk/88639/1/IEEE-57-10.pdf en eng IEEE Xplore https://centaur.reading.ac.uk/88639/1/IEEE-57-10.pdf Maslanka, W. <https://centaur.reading.ac.uk/view/creators/90008650.html> orcid:0000-0002-1777-733X , Sandells, M., Gurney, R. <https://centaur.reading.ac.uk/view/creators/90000409.html>, Lemmetyinen, J., Leppanen, L., Kontu, A., Matzl, M., Rutter, N., Watts, T. and Kelly, R. (2019) Derivation and evaluation of a new extinction coefficient for use with the n-HUT snow emission model. IEEE Transactions on Geoscience and Remote Sensing, 57 (10). pp. 7406-7417. ISSN 0196-2892 doi: https://doi.org/10.1109/TGRS.2019.2913208 <https://doi.org/10.1109/TGRS.2019.2913208> Article PeerReviewed 2019 ftunivreading https://doi.org/10.1109/TGRS.2019.2913208 2024-06-11T15:10:14Z In this study, snow slab data collected from the Arctic Snow Microstructure Experiment were used in conjunction with a six-directional flux coefficient model to calculate individual slab absorption and scattering coefficients. These coefficients formed the basis for a new semiempirical extinction coefficient model, using both frequency and optical diameter as input parameters, along with the complex dielectric constant of snow. Radiometric observations, at 18.7, 21.0, and 36.5 GHz at both horizontal polarization (H-Pol) and vertical polarization (V-Pol), and snowpit data collected as part of the Sodankylä Radiometer Experiment were used to compare and contrast the simulated brightness temperatures produced by the multi-layer Helsinki University of Technology snow emission model, utilizing both the original empirical model and the new semiempirical extinction coefficient model described here. The results show that the V-Pol RMSE and bias values decreased when using the semiempirical extinction coefficient; however, the H-Pol RMSE and bias values increased on two of the lower microwave bands tested. The unbiased RMSE was shown to decrease across all frequencies and polarizations when using the semiempirical extinction coefficient. Article in Journal/Newspaper Arctic Sodankylä CentAUR: Central Archive at the University of Reading Arctic Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) IEEE Transactions on Geoscience and Remote Sensing 57 10 7406 7417 |
institution |
Open Polar |
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CentAUR: Central Archive at the University of Reading |
op_collection_id |
ftunivreading |
language |
English |
description |
In this study, snow slab data collected from the Arctic Snow Microstructure Experiment were used in conjunction with a six-directional flux coefficient model to calculate individual slab absorption and scattering coefficients. These coefficients formed the basis for a new semiempirical extinction coefficient model, using both frequency and optical diameter as input parameters, along with the complex dielectric constant of snow. Radiometric observations, at 18.7, 21.0, and 36.5 GHz at both horizontal polarization (H-Pol) and vertical polarization (V-Pol), and snowpit data collected as part of the Sodankylä Radiometer Experiment were used to compare and contrast the simulated brightness temperatures produced by the multi-layer Helsinki University of Technology snow emission model, utilizing both the original empirical model and the new semiempirical extinction coefficient model described here. The results show that the V-Pol RMSE and bias values decreased when using the semiempirical extinction coefficient; however, the H-Pol RMSE and bias values increased on two of the lower microwave bands tested. The unbiased RMSE was shown to decrease across all frequencies and polarizations when using the semiempirical extinction coefficient. |
format |
Article in Journal/Newspaper |
author |
Maslanka, Will Sandells, Melody Gurney, Robert Lemmetyinen, Juha Leppanen, Leena Kontu, Anna Matzl, Margret Rutter, Nick Watts, Tom Kelly, Richard |
spellingShingle |
Maslanka, Will Sandells, Melody Gurney, Robert Lemmetyinen, Juha Leppanen, Leena Kontu, Anna Matzl, Margret Rutter, Nick Watts, Tom Kelly, Richard Derivation and evaluation of a new extinction coefficient for use with the n-HUT snow emission model |
author_facet |
Maslanka, Will Sandells, Melody Gurney, Robert Lemmetyinen, Juha Leppanen, Leena Kontu, Anna Matzl, Margret Rutter, Nick Watts, Tom Kelly, Richard |
author_sort |
Maslanka, Will |
title |
Derivation and evaluation of a new extinction coefficient for use with the n-HUT snow emission model |
title_short |
Derivation and evaluation of a new extinction coefficient for use with the n-HUT snow emission model |
title_full |
Derivation and evaluation of a new extinction coefficient for use with the n-HUT snow emission model |
title_fullStr |
Derivation and evaluation of a new extinction coefficient for use with the n-HUT snow emission model |
title_full_unstemmed |
Derivation and evaluation of a new extinction coefficient for use with the n-HUT snow emission model |
title_sort |
derivation and evaluation of a new extinction coefficient for use with the n-hut snow emission model |
publisher |
IEEE Xplore |
publishDate |
2019 |
url |
https://centaur.reading.ac.uk/88639/ https://centaur.reading.ac.uk/88639/1/IEEE-57-10.pdf |
long_lat |
ENVELOPE(26.600,26.600,67.417,67.417) |
geographic |
Arctic Sodankylä |
geographic_facet |
Arctic Sodankylä |
genre |
Arctic Sodankylä |
genre_facet |
Arctic Sodankylä |
op_relation |
https://centaur.reading.ac.uk/88639/1/IEEE-57-10.pdf Maslanka, W. <https://centaur.reading.ac.uk/view/creators/90008650.html> orcid:0000-0002-1777-733X , Sandells, M., Gurney, R. <https://centaur.reading.ac.uk/view/creators/90000409.html>, Lemmetyinen, J., Leppanen, L., Kontu, A., Matzl, M., Rutter, N., Watts, T. and Kelly, R. (2019) Derivation and evaluation of a new extinction coefficient for use with the n-HUT snow emission model. IEEE Transactions on Geoscience and Remote Sensing, 57 (10). pp. 7406-7417. ISSN 0196-2892 doi: https://doi.org/10.1109/TGRS.2019.2913208 <https://doi.org/10.1109/TGRS.2019.2913208> |
op_doi |
https://doi.org/10.1109/TGRS.2019.2913208 |
container_title |
IEEE Transactions on Geoscience and Remote Sensing |
container_volume |
57 |
container_issue |
10 |
container_start_page |
7406 |
op_container_end_page |
7417 |
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1802641371928985600 |