Weakening Dust Storm Intensity in Arid Central Asia Due to Global Warming Over the Past 160 Years
Dust storms occur frequently in arid central Asia (ACA) and greatly influence the regional ecology/environment, human health, and security, as well as the global climate. To date, neither the patterns nor the underlying mechanisms of dust storms in ACA are fully understood, partly due to the lack of...
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ftchinacascieeca:oai:ir.ieecas.cn:361006/15148 2023-05-15T16:39:18+02:00 Weakening Dust Storm Intensity in Arid Central Asia Due to Global Warming Over the Past 160 Years Zhang, Jin Xu, Hai Lan, Jianghu Ai, Li Sheng, Enguo Yan, Dongna Zhou, Kang'en Yu, Keke Song, Yunping Zhang, Shuang Torfstein, Adi 2020-07-21 http://ir.ieecas.cn/handle/361006/15148 https://doi.org/10.3389/feart.2020.00284 英语 eng FRONTIERS MEDIA SA FRONTIERS IN EARTH SCIENCE http://ir.ieecas.cn/handle/361006/15148 doi:10.3389/feart.2020.00284 dust storm global warming arid central Asia Lake Karakul grain size MALAN ICE CORE TIBETAN PLATEAU ATMOSPHERIC CIRCULATION EVENT FREQUENCY SOURCE AREA RECORD CHINA HOLOCENE DEPOSITS LAKE Geology Geosciences Multidisciplinary 期刊论文 2020 ftchinacascieeca https://doi.org/10.3389/feart.2020.00284 2020-12-07T07:31:54Z Dust storms occur frequently in arid central Asia (ACA) and greatly influence the regional ecology/environment, human health, and security, as well as the global climate. To date, neither the patterns nor the underlying mechanisms of dust storms in ACA are fully understood, partly due to the lack of long-term historical records. Here, we reconstruct a dust storm history of the past similar to 160 years in northwest China, based on high-resolution sedimentary proxies retrieved from Lake Karakul (located in the core zone of ACA). We find that changes in the sedimentary coarse fraction (grain size > 64 mu m) in Lake Karakul are correlated with both historical and modern observed dust storms. The reconstructed dust storm intensity shows a decreasing trend sinceAD1850s, with three high occurrence intervals atAD1870s-1910s,AD1930s-1940s, andAD1960s-1980s. We contend that changes in temperature and wind speed could have dominated the frequency and intensity of dust storms in northwest China during the record periods: temperature controls the wind speed and then the dust storm frequency/intensity; lower temperature corresponding to higher wind speed, and higher dust storm frequency/intensity, and vice versa. The observed anthropogenic global warming could have led to a decrease in atmospheric temperature gradients and decline in wind speed and then decreasing dust storm frequency/intensity. Providing this stands, less and weaker dust storms are expected under a continuously anthropogenic warming scenario. Report ice core Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Frontiers in Earth Science 8 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
dust storm global warming arid central Asia Lake Karakul grain size MALAN ICE CORE TIBETAN PLATEAU ATMOSPHERIC CIRCULATION EVENT FREQUENCY SOURCE AREA RECORD CHINA HOLOCENE DEPOSITS LAKE Geology Geosciences Multidisciplinary |
spellingShingle |
dust storm global warming arid central Asia Lake Karakul grain size MALAN ICE CORE TIBETAN PLATEAU ATMOSPHERIC CIRCULATION EVENT FREQUENCY SOURCE AREA RECORD CHINA HOLOCENE DEPOSITS LAKE Geology Geosciences Multidisciplinary Zhang, Jin Xu, Hai Lan, Jianghu Ai, Li Sheng, Enguo Yan, Dongna Zhou, Kang'en Yu, Keke Song, Yunping Zhang, Shuang Torfstein, Adi Weakening Dust Storm Intensity in Arid Central Asia Due to Global Warming Over the Past 160 Years |
topic_facet |
dust storm global warming arid central Asia Lake Karakul grain size MALAN ICE CORE TIBETAN PLATEAU ATMOSPHERIC CIRCULATION EVENT FREQUENCY SOURCE AREA RECORD CHINA HOLOCENE DEPOSITS LAKE Geology Geosciences Multidisciplinary |
description |
Dust storms occur frequently in arid central Asia (ACA) and greatly influence the regional ecology/environment, human health, and security, as well as the global climate. To date, neither the patterns nor the underlying mechanisms of dust storms in ACA are fully understood, partly due to the lack of long-term historical records. Here, we reconstruct a dust storm history of the past similar to 160 years in northwest China, based on high-resolution sedimentary proxies retrieved from Lake Karakul (located in the core zone of ACA). We find that changes in the sedimentary coarse fraction (grain size > 64 mu m) in Lake Karakul are correlated with both historical and modern observed dust storms. The reconstructed dust storm intensity shows a decreasing trend sinceAD1850s, with three high occurrence intervals atAD1870s-1910s,AD1930s-1940s, andAD1960s-1980s. We contend that changes in temperature and wind speed could have dominated the frequency and intensity of dust storms in northwest China during the record periods: temperature controls the wind speed and then the dust storm frequency/intensity; lower temperature corresponding to higher wind speed, and higher dust storm frequency/intensity, and vice versa. The observed anthropogenic global warming could have led to a decrease in atmospheric temperature gradients and decline in wind speed and then decreasing dust storm frequency/intensity. Providing this stands, less and weaker dust storms are expected under a continuously anthropogenic warming scenario. |
format |
Report |
author |
Zhang, Jin Xu, Hai Lan, Jianghu Ai, Li Sheng, Enguo Yan, Dongna Zhou, Kang'en Yu, Keke Song, Yunping Zhang, Shuang Torfstein, Adi |
author_facet |
Zhang, Jin Xu, Hai Lan, Jianghu Ai, Li Sheng, Enguo Yan, Dongna Zhou, Kang'en Yu, Keke Song, Yunping Zhang, Shuang Torfstein, Adi |
author_sort |
Zhang, Jin |
title |
Weakening Dust Storm Intensity in Arid Central Asia Due to Global Warming Over the Past 160 Years |
title_short |
Weakening Dust Storm Intensity in Arid Central Asia Due to Global Warming Over the Past 160 Years |
title_full |
Weakening Dust Storm Intensity in Arid Central Asia Due to Global Warming Over the Past 160 Years |
title_fullStr |
Weakening Dust Storm Intensity in Arid Central Asia Due to Global Warming Over the Past 160 Years |
title_full_unstemmed |
Weakening Dust Storm Intensity in Arid Central Asia Due to Global Warming Over the Past 160 Years |
title_sort |
weakening dust storm intensity in arid central asia due to global warming over the past 160 years |
publisher |
FRONTIERS MEDIA SA |
publishDate |
2020 |
url |
http://ir.ieecas.cn/handle/361006/15148 https://doi.org/10.3389/feart.2020.00284 |
genre |
ice core |
genre_facet |
ice core |
op_relation |
FRONTIERS IN EARTH SCIENCE http://ir.ieecas.cn/handle/361006/15148 doi:10.3389/feart.2020.00284 |
op_doi |
https://doi.org/10.3389/feart.2020.00284 |
container_title |
Frontiers in Earth Science |
container_volume |
8 |
_version_ |
1766029633625522176 |