Pan arctic terrestrial snowmelt trends (1979–2008) from spaceborne passive microwave data and correlation with the Arctic Oscillation
We report pan-arctic terrestrial snowmelt trends for the period 1979 – 2008 derived from spaceborne microwave brightness temperature (Tb) and study the correlation between these trends and the Arctic Oscillation (AO). Melting is detected using a spatially and temporally dynamic algorithm using the d...
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American Geophysical Union
2009
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Online Access: | https://doi.org/10.7916/D84Q7TWR |
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ftcolumbiauniv:oai:academiccommons.columbia.edu:10.7916/D84Q7TWR 2023-05-15T14:35:58+02:00 Pan arctic terrestrial snowmelt trends (1979–2008) from spaceborne passive microwave data and correlation with the Arctic Oscillation Tedesco, Marco Brodzik, M. Armstrong, R. Savoie, M. Ramage, J. 2009 https://doi.org/10.7916/D84Q7TWR English eng American Geophysical Union https://doi.org/10.7916/D84Q7TWR Climatic changes Meltwater Runoff Arctic oscillation Meteorology--Diurnal variations Geology Geomorphology Atmosphere Articles 2009 ftcolumbiauniv https://doi.org/10.7916/D84Q7TWR 2019-04-04T08:14:19Z We report pan-arctic terrestrial snowmelt trends for the period 1979 – 2008 derived from spaceborne microwave brightness temperature (Tb) and study the correlation between these trends and the Arctic Oscillation (AO). Melting is detected using a spatially and temporally dynamic algorithm using the difference between daytime and nighttime Tb values (Diurnal Amplitude Variations, DAV). Results indicate statistically significant negative trends for melt onset and end dates as well as for the length of the melt season. On the average, over the past 30 years melt has been starting (finishing) ∼0.5 days/year (∼1 days/year) earlier and the length of the melting season is shortening by ∼0.6 days/year. Results indicate that the AO index variability can explain up to 50% of the melt onset variability over Eurasia and only 10% of that over North America, consistent with spatial patterns of surface temperature changes related to the AO. Article in Journal/Newspaper Arctic Columbia University: Academic Commons Arctic |
institution |
Open Polar |
collection |
Columbia University: Academic Commons |
op_collection_id |
ftcolumbiauniv |
language |
English |
topic |
Climatic changes Meltwater Runoff Arctic oscillation Meteorology--Diurnal variations Geology Geomorphology Atmosphere |
spellingShingle |
Climatic changes Meltwater Runoff Arctic oscillation Meteorology--Diurnal variations Geology Geomorphology Atmosphere Tedesco, Marco Brodzik, M. Armstrong, R. Savoie, M. Ramage, J. Pan arctic terrestrial snowmelt trends (1979–2008) from spaceborne passive microwave data and correlation with the Arctic Oscillation |
topic_facet |
Climatic changes Meltwater Runoff Arctic oscillation Meteorology--Diurnal variations Geology Geomorphology Atmosphere |
description |
We report pan-arctic terrestrial snowmelt trends for the period 1979 – 2008 derived from spaceborne microwave brightness temperature (Tb) and study the correlation between these trends and the Arctic Oscillation (AO). Melting is detected using a spatially and temporally dynamic algorithm using the difference between daytime and nighttime Tb values (Diurnal Amplitude Variations, DAV). Results indicate statistically significant negative trends for melt onset and end dates as well as for the length of the melt season. On the average, over the past 30 years melt has been starting (finishing) ∼0.5 days/year (∼1 days/year) earlier and the length of the melting season is shortening by ∼0.6 days/year. Results indicate that the AO index variability can explain up to 50% of the melt onset variability over Eurasia and only 10% of that over North America, consistent with spatial patterns of surface temperature changes related to the AO. |
format |
Article in Journal/Newspaper |
author |
Tedesco, Marco Brodzik, M. Armstrong, R. Savoie, M. Ramage, J. |
author_facet |
Tedesco, Marco Brodzik, M. Armstrong, R. Savoie, M. Ramage, J. |
author_sort |
Tedesco, Marco |
title |
Pan arctic terrestrial snowmelt trends (1979–2008) from spaceborne passive microwave data and correlation with the Arctic Oscillation |
title_short |
Pan arctic terrestrial snowmelt trends (1979–2008) from spaceborne passive microwave data and correlation with the Arctic Oscillation |
title_full |
Pan arctic terrestrial snowmelt trends (1979–2008) from spaceborne passive microwave data and correlation with the Arctic Oscillation |
title_fullStr |
Pan arctic terrestrial snowmelt trends (1979–2008) from spaceborne passive microwave data and correlation with the Arctic Oscillation |
title_full_unstemmed |
Pan arctic terrestrial snowmelt trends (1979–2008) from spaceborne passive microwave data and correlation with the Arctic Oscillation |
title_sort |
pan arctic terrestrial snowmelt trends (1979–2008) from spaceborne passive microwave data and correlation with the arctic oscillation |
publisher |
American Geophysical Union |
publishDate |
2009 |
url |
https://doi.org/10.7916/D84Q7TWR |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
https://doi.org/10.7916/D84Q7TWR |
op_doi |
https://doi.org/10.7916/D84Q7TWR |
_version_ |
1766308693027061760 |