LONG-TERM CHANGES IN COVARIABILITY BETWEEN CONTINENTAL-SCALE SNOW COVER AND ATMOSPHERIC CIRCULATION IN THE NORTHERN HEMISPHERE
Large-scale snow cover extent and the atmospheric circulation have recently been recognized to interact mutually. Understanding the snow-atmosphere interaction is important for a better predict-ability of the cryospheric climate variability under the future climate change. We investigated interactio...
Main Authors: | , , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.587.2625 http://las.physik.uni-oldenburg.de/eProceedings/vol04_2/04_2_saito1.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.587.2625 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.587.2625 2023-05-15T15:07:47+02:00 LONG-TERM CHANGES IN COVARIABILITY BETWEEN CONTINENTAL-SCALE SNOW COVER AND ATMOSPHERIC CIRCULATION IN THE NORTHERN HEMISPHERE Kazuyuki Saito Tetsuzo Yasunari Takeshi Yamazaki Kooiti Masuda Judah Cohen The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.587.2625 http://las.physik.uni-oldenburg.de/eProceedings/vol04_2/04_2_saito1.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.587.2625 http://las.physik.uni-oldenburg.de/eProceedings/vol04_2/04_2_saito1.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://las.physik.uni-oldenburg.de/eProceedings/vol04_2/04_2_saito1.pdf text ftciteseerx 2016-01-08T13:18:46Z Large-scale snow cover extent and the atmospheric circulation have recently been recognized to interact mutually. Understanding the snow-atmosphere interaction is important for a better predict-ability of the cryospheric climate variability under the future climate change. We investigated interactions between continental snow cover extent and the large-scale atmos-pheric circulation variability in the Northern Hemisphere, on a climatic scale (from seasonal to sub-decadal) for the recent three decades. Both observations and numerical simulations were used. Utilized snow cover data were derived from the visible sensor (AVHRR). The indices to present the atmospheric circulation variability, such as the Arctic Oscillation (AO), were computed from the re-analysis data. Statistical analyses showed that the Eurasian snow cover extent (SCEEUR) and the AO have a significant coherency in sub-decadal periods, with the former leading the latter by several months. A more detailed inspection revealed a climatological change in the sub-decadal covariability between snow and the atmosphere in the mid 1980s. The change may be attributed to changes in the seasonal persistency of SCEEUR, from autumn to winter, and in strength of winter-to-spring in-teraction between SCEEUR and the AO. A series of numerical experiments was performed with an Text Arctic Climate change Unknown Arctic |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Large-scale snow cover extent and the atmospheric circulation have recently been recognized to interact mutually. Understanding the snow-atmosphere interaction is important for a better predict-ability of the cryospheric climate variability under the future climate change. We investigated interactions between continental snow cover extent and the large-scale atmos-pheric circulation variability in the Northern Hemisphere, on a climatic scale (from seasonal to sub-decadal) for the recent three decades. Both observations and numerical simulations were used. Utilized snow cover data were derived from the visible sensor (AVHRR). The indices to present the atmospheric circulation variability, such as the Arctic Oscillation (AO), were computed from the re-analysis data. Statistical analyses showed that the Eurasian snow cover extent (SCEEUR) and the AO have a significant coherency in sub-decadal periods, with the former leading the latter by several months. A more detailed inspection revealed a climatological change in the sub-decadal covariability between snow and the atmosphere in the mid 1980s. The change may be attributed to changes in the seasonal persistency of SCEEUR, from autumn to winter, and in strength of winter-to-spring in-teraction between SCEEUR and the AO. A series of numerical experiments was performed with an |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Kazuyuki Saito Tetsuzo Yasunari Takeshi Yamazaki Kooiti Masuda Judah Cohen |
spellingShingle |
Kazuyuki Saito Tetsuzo Yasunari Takeshi Yamazaki Kooiti Masuda Judah Cohen LONG-TERM CHANGES IN COVARIABILITY BETWEEN CONTINENTAL-SCALE SNOW COVER AND ATMOSPHERIC CIRCULATION IN THE NORTHERN HEMISPHERE |
author_facet |
Kazuyuki Saito Tetsuzo Yasunari Takeshi Yamazaki Kooiti Masuda Judah Cohen |
author_sort |
Kazuyuki Saito |
title |
LONG-TERM CHANGES IN COVARIABILITY BETWEEN CONTINENTAL-SCALE SNOW COVER AND ATMOSPHERIC CIRCULATION IN THE NORTHERN HEMISPHERE |
title_short |
LONG-TERM CHANGES IN COVARIABILITY BETWEEN CONTINENTAL-SCALE SNOW COVER AND ATMOSPHERIC CIRCULATION IN THE NORTHERN HEMISPHERE |
title_full |
LONG-TERM CHANGES IN COVARIABILITY BETWEEN CONTINENTAL-SCALE SNOW COVER AND ATMOSPHERIC CIRCULATION IN THE NORTHERN HEMISPHERE |
title_fullStr |
LONG-TERM CHANGES IN COVARIABILITY BETWEEN CONTINENTAL-SCALE SNOW COVER AND ATMOSPHERIC CIRCULATION IN THE NORTHERN HEMISPHERE |
title_full_unstemmed |
LONG-TERM CHANGES IN COVARIABILITY BETWEEN CONTINENTAL-SCALE SNOW COVER AND ATMOSPHERIC CIRCULATION IN THE NORTHERN HEMISPHERE |
title_sort |
long-term changes in covariability between continental-scale snow cover and atmospheric circulation in the northern hemisphere |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.587.2625 http://las.physik.uni-oldenburg.de/eProceedings/vol04_2/04_2_saito1.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
http://las.physik.uni-oldenburg.de/eProceedings/vol04_2/04_2_saito1.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.587.2625 http://las.physik.uni-oldenburg.de/eProceedings/vol04_2/04_2_saito1.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766339214640676864 |