Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau
The Tibetan Plateau (TP) has recently been polluted by anthropogenic emissions transported from South Asia, but the mechanisms conducive to this aerosol delivery are poorly understood. Here we show that winter loss of Arctic sea ice over the subpolar North Atlantic boosts aerosol transport toward th...
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Online Access: | https://hdl.handle.net/11250/2729475 https://doi.org/10.1038/s41558-020-0881-2 |
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ftnilu:oai:nilu.brage.unit.no:11250/2729475 2023-07-30T04:01:15+02:00 Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau Li, Fei Wang, Huijun Orsolini, Yvan J. Cong, Zhiyuan Gao, Yongqi Kang, Shichang 2020 application/pdf https://hdl.handle.net/11250/2729475 https://doi.org/10.1038/s41558-020-0881-2 eng eng NILU - Norsk institutt for luftforskning: 115089 Norges forskningsråd: 244166 Nordforsk: 76654 Nature Climate Change. 2020, 10, 1037-1044. urn:issn:1758-678X https://hdl.handle.net/11250/2729475 https://doi.org/10.1038/s41558-020-0881-2 cristin:1828282 1037-1044 10 Nature Climate Change Peer reviewed Journal article 2020 ftnilu https://doi.org/10.1038/s41558-020-0881-2 2023-07-08T19:54:20Z The Tibetan Plateau (TP) has recently been polluted by anthropogenic emissions transported from South Asia, but the mechanisms conducive to this aerosol delivery are poorly understood. Here we show that winter loss of Arctic sea ice over the subpolar North Atlantic boosts aerosol transport toward the TP in April, when the aerosol loading is at its climatological maximum and preceding the Indian summer monsoon onset. Low sea ice in February weakens the polar jet, causing decreased Ural snowpack via reduced transport of warm, moist oceanic air into the high-latitude Eurasian interior. This diminished snowpack persists through April, reinforcing the Ural pressure ridge and East Asian trough, segments of a quasi-stationary Rossby wave train extending across Eurasia. These conditions facilitate an enhanced subtropical westerly jet at the southern edge of the TP, invigorating upslope winds that combine with mesoscale updrafts to waft emissions over the Himalayas onto the TP. acceptedVersion Article in Journal/Newspaper Arctic North Atlantic Sea ice NILU – Norwegian Institute for Air Research: NILU Brage Arctic Indian Nature Climate Change 10 11 1037 1044 |
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Open Polar |
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NILU – Norwegian Institute for Air Research: NILU Brage |
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ftnilu |
language |
English |
description |
The Tibetan Plateau (TP) has recently been polluted by anthropogenic emissions transported from South Asia, but the mechanisms conducive to this aerosol delivery are poorly understood. Here we show that winter loss of Arctic sea ice over the subpolar North Atlantic boosts aerosol transport toward the TP in April, when the aerosol loading is at its climatological maximum and preceding the Indian summer monsoon onset. Low sea ice in February weakens the polar jet, causing decreased Ural snowpack via reduced transport of warm, moist oceanic air into the high-latitude Eurasian interior. This diminished snowpack persists through April, reinforcing the Ural pressure ridge and East Asian trough, segments of a quasi-stationary Rossby wave train extending across Eurasia. These conditions facilitate an enhanced subtropical westerly jet at the southern edge of the TP, invigorating upslope winds that combine with mesoscale updrafts to waft emissions over the Himalayas onto the TP. acceptedVersion |
format |
Article in Journal/Newspaper |
author |
Li, Fei Wang, Huijun Orsolini, Yvan J. Cong, Zhiyuan Gao, Yongqi Kang, Shichang |
spellingShingle |
Li, Fei Wang, Huijun Orsolini, Yvan J. Cong, Zhiyuan Gao, Yongqi Kang, Shichang Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau |
author_facet |
Li, Fei Wang, Huijun Orsolini, Yvan J. Cong, Zhiyuan Gao, Yongqi Kang, Shichang |
author_sort |
Li, Fei |
title |
Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau |
title_short |
Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau |
title_full |
Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau |
title_fullStr |
Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau |
title_full_unstemmed |
Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau |
title_sort |
arctic sea-ice loss intensifies aerosol transport to the tibetan plateau |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2729475 https://doi.org/10.1038/s41558-020-0881-2 |
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Arctic Indian |
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Arctic Indian |
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Arctic North Atlantic Sea ice |
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Arctic North Atlantic Sea ice |
op_source |
1037-1044 10 Nature Climate Change |
op_relation |
NILU - Norsk institutt for luftforskning: 115089 Norges forskningsråd: 244166 Nordforsk: 76654 Nature Climate Change. 2020, 10, 1037-1044. urn:issn:1758-678X https://hdl.handle.net/11250/2729475 https://doi.org/10.1038/s41558-020-0881-2 cristin:1828282 |
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https://doi.org/10.1038/s41558-020-0881-2 |
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Nature Climate Change |
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11 |
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1037 |
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1044 |
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