Early 21st century snow cover state over the western river basins of the Indus River system
In this paper we assess the snow cover and its dynamics for the western river basins of the Indus River system (IRS) and their sub-basins located in Afghanistan, China, India and Pakistan for the period 2001–2012. First, we validate the Moderate Resolution Imaging Spectroradiometer (MODIS) daily sno...
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Copernicus Publications
2014
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ftunivzuerich:oai:www.zora.uzh.ch:101928 2024-05-12T08:08:19+00:00 Early 21st century snow cover state over the western river basins of the Indus River system Hasson, S Lucarini, Valerio Khan, Mobushir R Petitta, Marcello Bolch, Tobias Gioli, Giovanna 2014 application/pdf https://www.zora.uzh.ch/id/eprint/101928/ https://www.zora.uzh.ch/id/eprint/101928/1/HassonAl14_hess_SnowCoverWesternIndusBas.pdf https://doi.org/10.5167/uzh-101928 https://doi.org/10.5194/hess-18-4077-2014 eng eng Copernicus Publications https://www.zora.uzh.ch/id/eprint/101928/1/HassonAl14_hess_SnowCoverWesternIndusBas.pdf doi:10.5167/uzh-101928 doi:10.5194/hess-18-4077-2014 urn:issn:1027-5606 info:eu-repo/semantics/openAccess Creative Commons: Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/ Hasson, S; Lucarini, Valerio; Khan, Mobushir R; Petitta, Marcello; Bolch, Tobias; Gioli, Giovanna (2014). Early 21st century snow cover state over the western river basins of the Indus River system. Hydrology and Earth System Sciences, 18(10):4077-4100. Institute of Geography 910 Geography & travel Journal Article PeerReviewed info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2014 ftunivzuerich https://doi.org/10.5167/uzh-10192810.5194/hess-18-4077-2014 2024-04-17T15:17:43Z In this paper we assess the snow cover and its dynamics for the western river basins of the Indus River system (IRS) and their sub-basins located in Afghanistan, China, India and Pakistan for the period 2001–2012. First, we validate the Moderate Resolution Imaging Spectroradiometer (MODIS) daily snow products from Terra (MOD10A1) and Aqua (MYD10A1) against the Landsat Thematic Mapper/Enhanced Thematic Mapper plus (TM/ETM+) data set, and then improve them for clouds by applying a validated non-spectral cloud removal technique. The improved snow product has been analysed on a seasonal and annual basis against different topographic parameters (aspect, elevation and slope). Our results show a decreasing tendency for the annual average snow cover for the westerlies-influenced basins (upper Indus basin (UIB), Astore, Hunza, Shigar and Shyok) and an increasing tendency for the monsooninfluenced basins (Jhelum, Kabul, Swat and Gilgit). Seasonal average snow cover decreases during winter and autumn, and increases during spring and summer, which is consistent with the observed cooling and warming trends during the respective seasons. Sub-basins at relatively higher latitudes/altitudes show higher variability than basins at lower latitudes/middle altitudes. Northeastern and northwestern aspects feature greater snow cover. The mean end-of-summer regional snow line altitude (SLA) zones range from 3000 to 5000ma.s.l. for all basins. Our analysis provides an indication of a descending end-of-summer regional SLA zone for most of the studied basins, which is significant for the Shyok and Kabul basins, thus indicating a change in their water resources. Such results are consistent with the observed hydro-climatic data, recently collected local perceptions and glacier mass balances for the investigated period within the UIB. Moreover, our analysis shows a significant correlation between winter season snow cover and the North Atlantic Oscillation (NAO) index of the previous autumn. Similarly, the inter-annual variability of spring ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation University of Zurich (UZH): ZORA (Zurich Open Repository and Archive Western River ENVELOPE(-107.169,-107.169,66.367,66.367) |
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 Hasson, S Lucarini, Valerio Khan, Mobushir R Petitta, Marcello Bolch, Tobias Gioli, Giovanna Early 21st century snow cover state over the western river basins of the Indus River system |
topic_facet |
Institute of Geography 910 Geography & travel |
description |
In this paper we assess the snow cover and its dynamics for the western river basins of the Indus River system (IRS) and their sub-basins located in Afghanistan, China, India and Pakistan for the period 2001–2012. First, we validate the Moderate Resolution Imaging Spectroradiometer (MODIS) daily snow products from Terra (MOD10A1) and Aqua (MYD10A1) against the Landsat Thematic Mapper/Enhanced Thematic Mapper plus (TM/ETM+) data set, and then improve them for clouds by applying a validated non-spectral cloud removal technique. The improved snow product has been analysed on a seasonal and annual basis against different topographic parameters (aspect, elevation and slope). Our results show a decreasing tendency for the annual average snow cover for the westerlies-influenced basins (upper Indus basin (UIB), Astore, Hunza, Shigar and Shyok) and an increasing tendency for the monsooninfluenced basins (Jhelum, Kabul, Swat and Gilgit). Seasonal average snow cover decreases during winter and autumn, and increases during spring and summer, which is consistent with the observed cooling and warming trends during the respective seasons. Sub-basins at relatively higher latitudes/altitudes show higher variability than basins at lower latitudes/middle altitudes. Northeastern and northwestern aspects feature greater snow cover. The mean end-of-summer regional snow line altitude (SLA) zones range from 3000 to 5000ma.s.l. for all basins. Our analysis provides an indication of a descending end-of-summer regional SLA zone for most of the studied basins, which is significant for the Shyok and Kabul basins, thus indicating a change in their water resources. Such results are consistent with the observed hydro-climatic data, recently collected local perceptions and glacier mass balances for the investigated period within the UIB. Moreover, our analysis shows a significant correlation between winter season snow cover and the North Atlantic Oscillation (NAO) index of the previous autumn. Similarly, the inter-annual variability of spring ... |
format |
Article in Journal/Newspaper |
author |
Hasson, S Lucarini, Valerio Khan, Mobushir R Petitta, Marcello Bolch, Tobias Gioli, Giovanna |
author_facet |
Hasson, S Lucarini, Valerio Khan, Mobushir R Petitta, Marcello Bolch, Tobias Gioli, Giovanna |
author_sort |
Hasson, S |
title |
Early 21st century snow cover state over the western river basins of the Indus River system |
title_short |
Early 21st century snow cover state over the western river basins of the Indus River system |
title_full |
Early 21st century snow cover state over the western river basins of the Indus River system |
title_fullStr |
Early 21st century snow cover state over the western river basins of the Indus River system |
title_full_unstemmed |
Early 21st century snow cover state over the western river basins of the Indus River system |
title_sort |
early 21st century snow cover state over the western river basins of the indus river system |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://www.zora.uzh.ch/id/eprint/101928/ https://www.zora.uzh.ch/id/eprint/101928/1/HassonAl14_hess_SnowCoverWesternIndusBas.pdf https://doi.org/10.5167/uzh-101928 https://doi.org/10.5194/hess-18-4077-2014 |
long_lat |
ENVELOPE(-107.169,-107.169,66.367,66.367) |
geographic |
Western River |
geographic_facet |
Western River |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Hasson, S; Lucarini, Valerio; Khan, Mobushir R; Petitta, Marcello; Bolch, Tobias; Gioli, Giovanna (2014). Early 21st century snow cover state over the western river basins of the Indus River system. Hydrology and Earth System Sciences, 18(10):4077-4100. |
op_relation |
https://www.zora.uzh.ch/id/eprint/101928/1/HassonAl14_hess_SnowCoverWesternIndusBas.pdf doi:10.5167/uzh-101928 doi:10.5194/hess-18-4077-2014 urn:issn:1027-5606 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons: Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.5167/uzh-10192810.5194/hess-18-4077-2014 |
_version_ |
1798851282193088512 |