Arid
DOI10.1029/2018GL079376
Can Climate Models Reproduce the Decadal Change of Dust Aerosol in East Asia?
Wu, Chenglai1; Lin, Zhaohui1,2; Liu, Xiaohong1,3; Li, Ying4; Lu, Zheng3; Wu, Mingxuan3
通讯作者Liu, Xiaohong
来源期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2018
卷号45期号:18页码:9953-9962
英文摘要

Dust aerosol plays an important role in the Earth System. As a natural aerosol, dust aerosol is often calculated interactively in global climate models and temporal variations of dust emission in the past century are far less constrained compared to those of anthropogenic aerosol emissions. Here we evaluate dust emission in East Asia simulated by 15 climate models participating in the Coupled Model Intercomparison Project Phase 5. The results show that none of the models can reproduce the observed decline of dust event frequency during 1961-2005 over East Asia. The models tend to simulate either much less decline or even increase of dust emission. The discrepancy is mainly ascribed to weaker or opposite trends of surface wind speeds and precipitation in the models. These results cast a doubt on the interpretation of long-term variations of dust-affected fields in climate models and highlight the need for further improvements of the models.


Plain Language Summary Atmospheric aerosol is one of key factors that influence climate change. Aerosols include anthropogenic aerosols (such as sulfate aerosol and black carbon from fossil fuel burning) and natural aerosols (such as dust that is emitted by strong winds over bare soil). Climate models are important tools we use to predict the climate in the future, and the reliability of climate models lies in their ability to reproduce the change of climate system in the past. Here we examine the ability of climate models in reproducing the long-term change of dust storm frequency in East Asia. First, historical records of dust events show the dust activities decreased greatly during 1961 to 2005 over East Asia. Compared to this observation, current climate models are unable to reproduce the large decline of dust activities during 1961 to 2005. The reason is that climate models cannot capture the decrease of surface wind speed and increase of precipitation. These results imply that climate models may not represent well the change of meteorological elements (e.g., temperature and clouds) that will be affected by dust. Our results highlight urgent need to improve the performance of climate models in simulating long-term dust change.


英文关键词dust emission CMIP5 climate models dust storm long-term trend surface wind precipitation
类型Article
语种英语
国家Peoples R China ; USA
收录类别SCI-E
WOS记录号WOS:000447761300067
WOS关键词MINERAL DUST ; STORM FREQUENCY ; NORTHERN CHINA ; DESERT DUST ; PART I ; SIMULATION ; CYCLE ; CIRCULATION ; EVENTS ; REPRESENTATION
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
来源机构中国科学院大气物理研究所 ; 南京信息工程大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/209700
作者单位1.Chinese Acad Sci, Inst Atmospher Phys, Int Ctr Climate & Environm Sci, Beijing, Peoples R China;
2.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China;
3.Univ Wyoming, Dept Atmospher Sci, Laramie, WY 82071 USA;
4.China Meteorol Adm, Natl Climate Ctr, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Wu, Chenglai,Lin, Zhaohui,Liu, Xiaohong,et al. Can Climate Models Reproduce the Decadal Change of Dust Aerosol in East Asia?[J]. 中国科学院大气物理研究所, 南京信息工程大学,2018,45(18):9953-9962.
APA Wu, Chenglai,Lin, Zhaohui,Liu, Xiaohong,Li, Ying,Lu, Zheng,&Wu, Mingxuan.(2018).Can Climate Models Reproduce the Decadal Change of Dust Aerosol in East Asia?.GEOPHYSICAL RESEARCH LETTERS,45(18),9953-9962.
MLA Wu, Chenglai,et al."Can Climate Models Reproduce the Decadal Change of Dust Aerosol in East Asia?".GEOPHYSICAL RESEARCH LETTERS 45.18(2018):9953-9962.
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