气候变化领域集成服务门户(CCPortal): Characteristics of low-level temperature inversions over the Arctic Ocean during the CHINARE 2018 campaign in summer

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DOI	10.1016/j.atmosenv.2021.118333
	Characteristics of low-level temperature inversions over the Arctic Ocean during the CHINARE 2018 campaign in summer
	Zhang L.; Li J.; Ding M.; Guo J.; Bian L.; Sun Q.; Yang Q.; Dou T.; Zhang W.; Tian B.; Lu C.; Zhang D.
发表日期	2021
ISSN	1352-2310
卷号	253
英文摘要	Across the Arctic Ocean, the semi-permanent sea-ice layer insulates the atmosphere from the Arctic Ocean, thereby influencing the lower boundary conditions of the atmosphere in this region. The presence of a temperature inversion predominantly characterizes the Arctic lower troposphere throughout the year. The 9th Chinese National Arctic Research Expedition took place in the Pacific Sectors of the Arctic Ocean from July to September 2018, gathering high-resolution radiosonde data to provide a detailed structure of the low-level temperature inversion (LLI) over the summer months. Statistical analyses showed that LLIs occurred most frequently below 500m and were generally weaker and shallower than those occurring during the winter months. Low-level inversions are influenced by both local meteorology and large scale synoptic conditions. The continual presence of low-level clouds or fog tends to lift the inversion layer at the local scale, transferring it from a surface-based inversion (SBI) to an elevated inversion (EI). By contrast, SBIs were found to dominate over regions of melting sea-ice. Regimes, where the cloud top penetrated the inversion base were more frequently observed than cloud capped by inversion regimes. Inversions tended to be deeper, stronger, and with a lower base during cloud top penetrating inversion base regimes. At the synoptical scale, the intense poleward intrusions of warm air brought moist air to the top of low-level inversions, creating a robust thermal stratification between layers and promoting extensive and frequency occurrences of low cloud/fog. Moreover, the polar high contributed to establishing a multilayer inversion structure at relatively high altitudes by subsidence. These findings contribute to an improving understanding of low-level vertical temperature structures and their influence on a rapidly warming Arctic. © 2021 Elsevier Ltd
关键词	Arctic ocean Large-scale circulation Local meteorology Low-level inversion
语种	英语
scopus关键词	Atmospheric temperature; Oceanography; Sea ice; Arctic ocean; Arctic research; Ice layers; Large-scale circulation; Local meteorology; Low-level inversion; Lower boundary conditions; Lower troposphere; Semi permanents; Temperature inversions; Climatology; low temperature; radiosonde; satellite data; sea ice; summer; temperature inversion; altitude; Arctic Ocean; article; melting point; meteorology; sea ice; summer; troposphere; warming; winter; Arctic Ocean
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248481
作者单位	State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing, 210044, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China; Key Laboratory of Research on Marine Hazards Forecasting, Ministry of Natural Resources, National Marine Environmental Forecasting Center, Beijing, 100081, China; School of Atmospheric Sciences, Sun Yat-sen University, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519082, China
推荐引用方式 GB/T 7714	Zhang L.,Li J.,Ding M.,et al. Characteristics of low-level temperature inversions over the Arctic Ocean during the CHINARE 2018 campaign in summer[J],2021,253.
APA	Zhang L..,Li J..,Ding M..,Guo J..,Bian L..,...&Zhang D..(2021).Characteristics of low-level temperature inversions over the Arctic Ocean during the CHINARE 2018 campaign in summer.ATMOSPHERIC ENVIRONMENT,253.
MLA	Zhang L.,et al."Characteristics of low-level temperature inversions over the Arctic Ocean during the CHINARE 2018 campaign in summer".ATMOSPHERIC ENVIRONMENT 253(2021).