Light-absorbing impurities in snow cover across Northern Xinjiang, China
Light-absorbing impurities (LAIs, e.g. black carbon (BC), organic carbon (OC), mineral dust (MD)) deposited on snow cover reduce albedo and accelerate its melting. Northern Xinjiang (NX) is an arid and semi-arid inland region, where snowmelt leads to frequent floods that have been a serious threat t...
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ftchinacascieeca:oai:ir.ieecas.cn:361006/12792 2023-06-11T04:13:31+02:00 Light-absorbing impurities in snow cover across Northern Xinjiang, China Zhong, Xinyue Kang, Shichang Zhang, Wei Yang, Junhua Li, Xiaofei Zhang, Yulan Liu, Yajun Chen, Pengfei 2019-12-01 http://ir.ieecas.cn/handle/361006/12791 http://ir.ieecas.cn/handle/361006/12792 https://doi.org/10.1017/jog.2019.69 英语 eng CAMBRIDGE UNIV PRESS JOURNAL OF GLACIOLOGY http://ir.ieecas.cn/handle/361006/12791 http://ir.ieecas.cn/handle/361006/12792 doi:10.1017/jog.2019.69 Light-absorbing impurities Northern Xinjiang radiative forcing snow albedo snowmelt BLACK CARBON DEPOSITION MINERAL DUST SPATIOTEMPORAL VARIABILITY ORGANIC-CARBON SEASONAL SNOW GLACIER MELT ICE ALBEDO ABSORPTION PARTICLES Physical Geography Geology Geography Physical Geosciences Multidisciplinary 期刊论文 2019 ftchinacascieeca https://doi.org/10.1017/jog.2019.69 2023-05-08T13:24:11Z Light-absorbing impurities (LAIs, e.g. black carbon (BC), organic carbon (OC), mineral dust (MD)) deposited on snow cover reduce albedo and accelerate its melting. Northern Xinjiang (NX) is an arid and semi-arid inland region, where snowmelt leads to frequent floods that have been a serious threat to local ecological security. There is still a lack of quantitative assessments of the effects of LAIs on snowmelt in the region. This study investigates spatial variations of LAIs in snow and its effect on snow albedo, radiative forcing (RF) and snowmelt across NX. Results showed that concentrations of BC, OC (only water-insoluble OC), MD ranged from 32 to 8841 ng g(-1), 77 to 8568 ng g(-1) and 0.46 to 236 mu g g(-1) respectively. Weather Research and Forecasting Chemistry model suggested that residential emission was the largest source of BC. Snow, Ice, and Aerosol Radiative modelling showed that the average contribution of BC and MD to snow albedo reduction was 17 and 3%, respectively. RF caused by BC significantly exceeded RF caused by MD. In different scenarios, changes in snow cover duration (SCD) caused by BC and MD decreased by 1.36 +/- 0.61 to 6.12 +/- 3.38 d. Compared with MD, BC was the main dominant factor in reducing snow albedo and SCD across NX. Report Journal of Glaciology Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Journal of Glaciology 65 254 940 956 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
Light-absorbing impurities Northern Xinjiang radiative forcing snow albedo snowmelt BLACK CARBON DEPOSITION MINERAL DUST SPATIOTEMPORAL VARIABILITY ORGANIC-CARBON SEASONAL SNOW GLACIER MELT ICE ALBEDO ABSORPTION PARTICLES Physical Geography Geology Geography Physical Geosciences Multidisciplinary |
spellingShingle |
Light-absorbing impurities Northern Xinjiang radiative forcing snow albedo snowmelt BLACK CARBON DEPOSITION MINERAL DUST SPATIOTEMPORAL VARIABILITY ORGANIC-CARBON SEASONAL SNOW GLACIER MELT ICE ALBEDO ABSORPTION PARTICLES Physical Geography Geology Geography Physical Geosciences Multidisciplinary Zhong, Xinyue Kang, Shichang Zhang, Wei Yang, Junhua Li, Xiaofei Zhang, Yulan Liu, Yajun Chen, Pengfei Light-absorbing impurities in snow cover across Northern Xinjiang, China |
topic_facet |
Light-absorbing impurities Northern Xinjiang radiative forcing snow albedo snowmelt BLACK CARBON DEPOSITION MINERAL DUST SPATIOTEMPORAL VARIABILITY ORGANIC-CARBON SEASONAL SNOW GLACIER MELT ICE ALBEDO ABSORPTION PARTICLES Physical Geography Geology Geography Physical Geosciences Multidisciplinary |
description |
Light-absorbing impurities (LAIs, e.g. black carbon (BC), organic carbon (OC), mineral dust (MD)) deposited on snow cover reduce albedo and accelerate its melting. Northern Xinjiang (NX) is an arid and semi-arid inland region, where snowmelt leads to frequent floods that have been a serious threat to local ecological security. There is still a lack of quantitative assessments of the effects of LAIs on snowmelt in the region. This study investigates spatial variations of LAIs in snow and its effect on snow albedo, radiative forcing (RF) and snowmelt across NX. Results showed that concentrations of BC, OC (only water-insoluble OC), MD ranged from 32 to 8841 ng g(-1), 77 to 8568 ng g(-1) and 0.46 to 236 mu g g(-1) respectively. Weather Research and Forecasting Chemistry model suggested that residential emission was the largest source of BC. Snow, Ice, and Aerosol Radiative modelling showed that the average contribution of BC and MD to snow albedo reduction was 17 and 3%, respectively. RF caused by BC significantly exceeded RF caused by MD. In different scenarios, changes in snow cover duration (SCD) caused by BC and MD decreased by 1.36 +/- 0.61 to 6.12 +/- 3.38 d. Compared with MD, BC was the main dominant factor in reducing snow albedo and SCD across NX. |
format |
Report |
author |
Zhong, Xinyue Kang, Shichang Zhang, Wei Yang, Junhua Li, Xiaofei Zhang, Yulan Liu, Yajun Chen, Pengfei |
author_facet |
Zhong, Xinyue Kang, Shichang Zhang, Wei Yang, Junhua Li, Xiaofei Zhang, Yulan Liu, Yajun Chen, Pengfei |
author_sort |
Zhong, Xinyue |
title |
Light-absorbing impurities in snow cover across Northern Xinjiang, China |
title_short |
Light-absorbing impurities in snow cover across Northern Xinjiang, China |
title_full |
Light-absorbing impurities in snow cover across Northern Xinjiang, China |
title_fullStr |
Light-absorbing impurities in snow cover across Northern Xinjiang, China |
title_full_unstemmed |
Light-absorbing impurities in snow cover across Northern Xinjiang, China |
title_sort |
light-absorbing impurities in snow cover across northern xinjiang, china |
publisher |
CAMBRIDGE UNIV PRESS |
publishDate |
2019 |
url |
http://ir.ieecas.cn/handle/361006/12791 http://ir.ieecas.cn/handle/361006/12792 https://doi.org/10.1017/jog.2019.69 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_relation |
JOURNAL OF GLACIOLOGY http://ir.ieecas.cn/handle/361006/12791 http://ir.ieecas.cn/handle/361006/12792 doi:10.1017/jog.2019.69 |
op_doi |
https://doi.org/10.1017/jog.2019.69 |
container_title |
Journal of Glaciology |
container_volume |
65 |
container_issue |
254 |
container_start_page |
940 |
op_container_end_page |
956 |
_version_ |
1768390663431258112 |