Perennial snow and ice variations (2000–2008) in the Arctic circumpolar land area from satellite observations
Perennial snow and ice (PSI) extent is an important parameter of mountain environments with regard to its involvement in the hydrological cycle and the surface energy budget. We investigated interannual variations of PSI in nine mountain regions of interest (ROI) between 2000 and 2008. For that purp...
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American Geophysical Union
2010
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ftunivzuerich:oai:www.zora.uzh.ch:39562 2024-06-23T07:48:34+00:00 Perennial snow and ice variations (2000–2008) in the Arctic circumpolar land area from satellite observations Fontana, F M A Trishchenko, A P Luo, Y Khlopenkov, K V Nussbaumer, S U Wunderle, S 2010-11 application/pdf https://www.zora.uzh.ch/id/eprint/39562/ https://www.zora.uzh.ch/id/eprint/39562/14/Fontana_Trishchenko_Perennial_Snow_Ice_Variations_2010V.pdf https://doi.org/10.5167/uzh-39562 https://doi.org/10.1029/2010JF001664 eng eng American Geophysical Union https://www.zora.uzh.ch/id/eprint/39562/14/Fontana_Trishchenko_Perennial_Snow_Ice_Variations_2010V.pdf doi:10.5167/uzh-39562 doi:10.1029/2010JF001664 urn:issn:0148-0227 info:eu-repo/semantics/openAccess Fontana, F M A; Trishchenko, A P; Luo, Y; Khlopenkov, K V; Nussbaumer, S U; Wunderle, S (2010). Perennial snow and ice variations (2000–2008) in the Arctic circumpolar land area from satellite observations. Journal of Geophysical Research, 115:F04020. Institute of Geography 910 Geography & travel Journal Article PeerReviewed info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2010 ftunivzuerich https://doi.org/10.5167/uzh-3956210.1029/2010JF001664 2024-06-12T00:15:37Z Perennial snow and ice (PSI) extent is an important parameter of mountain environments with regard to its involvement in the hydrological cycle and the surface energy budget. We investigated interannual variations of PSI in nine mountain regions of interest (ROI) between 2000 and 2008. For that purpose, a novel MODIS data set processed at the Canada Centre for Remote Sensing at 250 m spatial resolution was utilized. The extent of PSI exhibited significant interannual variations, with coefficients of variation ranging from 5% to 81% depending on the ROI. A strong negative relationship was found between PSI and positive degree‐days (threshold 0°C) during the summer months in most ROIs, with linear correlation coefficients (r) being as low as r = −0.90. In the European Alps and Scandinavia, PSI extent was significantly correlated with annual net glacier mass balances, with r = 0.91 and r = 0.85, respectively, suggesting that MODIS‐derived PSI extent may be used as an indicator of net glacier mass balances. Validation of PSI extent in two land surface classifications for the years 2000 and 2005, GLC‐2000 and Globcover, revealed significant discrepancies of up to 129% for both classifications. With regard to the importance of such classifications for land surface parameterizations in climate and land surface process models, this is a potential source of error to be investigated in future studies. The results presented here provide an interesting insight into variations of PSI in several ROIs and are instrumental for our understanding of sensitive mountain regions in the context of global climate change assessment. Article in Journal/Newspaper Arctic Arctic Climate change glacier* University of Zurich (UZH): ZORA (Zurich Open Repository and Archive Arctic Canada Psi ENVELOPE(-63.000,-63.000,-64.300,-64.300) |
institution |
Open Polar |
collection |
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
op_collection_id |
ftunivzuerich |
language |
English |
topic |
Institute of Geography 910 Geography & travel |
spellingShingle |
Institute of Geography 910 Geography & travel Fontana, F M A Trishchenko, A P Luo, Y Khlopenkov, K V Nussbaumer, S U Wunderle, S Perennial snow and ice variations (2000–2008) in the Arctic circumpolar land area from satellite observations |
topic_facet |
Institute of Geography 910 Geography & travel |
description |
Perennial snow and ice (PSI) extent is an important parameter of mountain environments with regard to its involvement in the hydrological cycle and the surface energy budget. We investigated interannual variations of PSI in nine mountain regions of interest (ROI) between 2000 and 2008. For that purpose, a novel MODIS data set processed at the Canada Centre for Remote Sensing at 250 m spatial resolution was utilized. The extent of PSI exhibited significant interannual variations, with coefficients of variation ranging from 5% to 81% depending on the ROI. A strong negative relationship was found between PSI and positive degree‐days (threshold 0°C) during the summer months in most ROIs, with linear correlation coefficients (r) being as low as r = −0.90. In the European Alps and Scandinavia, PSI extent was significantly correlated with annual net glacier mass balances, with r = 0.91 and r = 0.85, respectively, suggesting that MODIS‐derived PSI extent may be used as an indicator of net glacier mass balances. Validation of PSI extent in two land surface classifications for the years 2000 and 2005, GLC‐2000 and Globcover, revealed significant discrepancies of up to 129% for both classifications. With regard to the importance of such classifications for land surface parameterizations in climate and land surface process models, this is a potential source of error to be investigated in future studies. The results presented here provide an interesting insight into variations of PSI in several ROIs and are instrumental for our understanding of sensitive mountain regions in the context of global climate change assessment. |
format |
Article in Journal/Newspaper |
author |
Fontana, F M A Trishchenko, A P Luo, Y Khlopenkov, K V Nussbaumer, S U Wunderle, S |
author_facet |
Fontana, F M A Trishchenko, A P Luo, Y Khlopenkov, K V Nussbaumer, S U Wunderle, S |
author_sort |
Fontana, F M A |
title |
Perennial snow and ice variations (2000–2008) in the Arctic circumpolar land area from satellite observations |
title_short |
Perennial snow and ice variations (2000–2008) in the Arctic circumpolar land area from satellite observations |
title_full |
Perennial snow and ice variations (2000–2008) in the Arctic circumpolar land area from satellite observations |
title_fullStr |
Perennial snow and ice variations (2000–2008) in the Arctic circumpolar land area from satellite observations |
title_full_unstemmed |
Perennial snow and ice variations (2000–2008) in the Arctic circumpolar land area from satellite observations |
title_sort |
perennial snow and ice variations (2000–2008) in the arctic circumpolar land area from satellite observations |
publisher |
American Geophysical Union |
publishDate |
2010 |
url |
https://www.zora.uzh.ch/id/eprint/39562/ https://www.zora.uzh.ch/id/eprint/39562/14/Fontana_Trishchenko_Perennial_Snow_Ice_Variations_2010V.pdf https://doi.org/10.5167/uzh-39562 https://doi.org/10.1029/2010JF001664 |
long_lat |
ENVELOPE(-63.000,-63.000,-64.300,-64.300) |
geographic |
Arctic Canada Psi |
geographic_facet |
Arctic Canada Psi |
genre |
Arctic Arctic Climate change glacier* |
genre_facet |
Arctic Arctic Climate change glacier* |
op_source |
Fontana, F M A; Trishchenko, A P; Luo, Y; Khlopenkov, K V; Nussbaumer, S U; Wunderle, S (2010). Perennial snow and ice variations (2000–2008) in the Arctic circumpolar land area from satellite observations. Journal of Geophysical Research, 115:F04020. |
op_relation |
https://www.zora.uzh.ch/id/eprint/39562/14/Fontana_Trishchenko_Perennial_Snow_Ice_Variations_2010V.pdf doi:10.5167/uzh-39562 doi:10.1029/2010JF001664 urn:issn:0148-0227 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5167/uzh-3956210.1029/2010JF001664 |
_version_ |
1802638939008270336 |