globalchange  > 气候减缓与适应
DOI: 10.1029/2017JD027949
Scopus记录号: 2-s2.0-85047786954
论文题名:
Low-Level Jets Over the Bohai Sea and Yellow Sea: Climatology, Variability, and the Relationship With Regional Atmospheric Circulations
作者: Li D.; von Storch H.; Yin B.; Xu Z.; Qi J.; Wei W.; Guo D.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:10
起始页码: 5240
结束页码: 5260
语种: 英语
英文关键词: Bohai Sea and Yellow Sea ; climatology ; COSMO-CLM ; low-level jet ; regional climate modeling
英文摘要: The present study reveals climate features of low-level jets (LLJs) over the Bohai Sea and Yellow Sea (BYS) based on a 35-year (1979–2013) high-resolution (7 km) atmospheric hindcast. The regional climate model COSMO-CLM driven by the ERA-Interim reanalysis data set was used to obtain the hindcast. Through comparison with observations, the hindcast was proved to robustly reproduce the climatology, the diurnal cycle, the variability of wind profiles, and specific LLJ cases. LLJs over the BYS feature a strong diurnal cycle, intra-annual, and interannual variability but weak decadal variability. LLJs are more frequent in April, May, and June (LLJ season) and less frequent in winter over the Bohai Sea and western coastal areas of the Yellow Sea, which is due to the intra-annual variations of large-scale circulation and local land-sea thermal contrast. In the LLJ season, the heights of jet cores are generally lower than 500 m above sea level. The maximum wind speed of LLJs is mostly in the range of 10–16 m/s, and prevailing wind directions are southerly and southwesterly. The LLJs are of the nocturnal type, with the highest occurrence frequency at approximately 2300 local time. Furthermore, a low-frequency link between anomalies of LLJ occurrence and regional large-scale barotropic circulation was identified using canonical correlation analysis and associated correlation patterns. Pressure systems over the East Asia-northwest Pacific region are significantly correlated with the variations of LLJ occurrence over the BYS in terms of the intra-annual and interannual variability. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113838
Appears in Collections:气候减缓与适应

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作者单位: Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Function Laboratory for Ocean Dynamics and Climate, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Institute of Coastal Research, Helmholtz Zentrum Geesthacht, Geesthacht, Germany; CliSAP, University of Hamburg, Hamburg, Germany; College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao, China; University of Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China; North China Sea Marine Forecasting Center of State Oceanic Administration, Qingdao, China

Recommended Citation:
Li D.,von Storch H.,Yin B.,et al. Low-Level Jets Over the Bohai Sea and Yellow Sea: Climatology, Variability, and the Relationship With Regional Atmospheric Circulations[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(10)
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