气候变化领域集成服务门户(CCPortal): Adriatic-Ionian air temperature and precipitation patterns derived from self-organizing maps: Relation to hemispheric indices

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DOI	10.3354/cr01565
	Adriatic-Ionian air temperature and precipitation patterns derived from self-organizing maps: Relation to hemispheric indices
	Matić F.; Kalinić H.; Vilibić I.; Grbec B.; Morožin K.
发表日期	2019
ISSN	0936-577X
起始页码	149
结束页码	163
卷号	78 期号:2
英文摘要	Normalized anomalies in air temperature and precipitation patterns derived from monthly data series collected at 28 in situ meteorological stations in the Adriatic-Ionian region between 1961 and 2015 were mapped by using the self-organizing map (SOM) method - an unsupervised neural network method - and connected with hemispheric indices in the atmosphere. Four indices were used: North Atlantic Oscillation (NAO), East Atlantic (EA), East Atlantic/West Russia (EAWR) and Scandinavian (SCA). Two experiments were conducted: the first combined normalized temperature anomalies with the indices, and the second combined normalized precipitation anomalies with the indices. Precipitation data better fit the SOM model than temperature data, while the SOM model has the best performance at a 3 × 3 matrix size. Region-wide negative precipitation anomalies are related to a combination of positive NAO and EAWR, and negative SCA indices, and vice versa. Positive air temperature anomalies are related to the positive EA index and vice versa. The mapped relations between the NAO index and precipitation anomalies indicate a nonlinear connection, because positive index values resemble 2 different precipitation patterns. The SOM-based nonlinear clustering might be useful in determining and forecasting precipitation and air temperature patterns from hemispheric indices. © Inter-Research 2019 · www.int-res.com
英文关键词	Air temperature; Central Mediterranean; Hemispheric indices; Precipitation; Self-organizing maps
语种	英语
scopus关键词	air temperature; artificial neural network; North Atlantic Oscillation; precipitation intensity; self organizing map; temperature anomaly; unsupervised classification; Atlantic Ocean; Atlantic Ocean (East); Atlantic Ocean (North); Russian Federation; Scandinavia
来源期刊	Climate Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146927
作者单位	Institute of Oceanography and Fisheries, Split, 21000, Croatia; Faculty of Science, University of Split, Split, 21000, Croatia; Department of Marine Studies, University of Split, Split, 21000, Croatia
推荐引用方式 GB/T 7714	Matić F.,Kalinić H.,Vilibić I.,et al. Adriatic-Ionian air temperature and precipitation patterns derived from self-organizing maps: Relation to hemispheric indices[J],2019,78(2).
APA	Matić F.,Kalinić H.,Vilibić I.,Grbec B.,&Morožin K..(2019).Adriatic-Ionian air temperature and precipitation patterns derived from self-organizing maps: Relation to hemispheric indices.Climate Research,78(2).
MLA	Matić F.,et al."Adriatic-Ionian air temperature and precipitation patterns derived from self-organizing maps: Relation to hemispheric indices".Climate Research 78.2(2019).