气候变化领域集成服务门户(CCPortal): Spatial Dynamical Complexity of Precipitation and Temperature Extremes over Africa and South America

CCPortal

DOI	10.1007/s13143-019-00131-y
	Spatial Dynamical Complexity of Precipitation and Temperature Extremes over Africa and South America
	Ogunjo, Samuel; Fuwape, Ibiyinka; Oluyamo, Sunday; Rabiu, Babatunde
发表日期	2024
ISSN	1976-7633
EISSN	1976-7951
起始页码	60
结束页码	1
卷号	60 期号:1
英文摘要	This study investigates the linear and nonlinear dynamics of precipitation and temperature extremes. Monthly daily temperature range (DTR) and maximum 5-day precipitation (RX5) data for sixty three years were obtained from the archives of the Expert Team on Climate Change Detection and Indices (ETCCDI). Spatial maps were constructed for the descriptive statistics (mean, standard deviation, skewness, trend and variance) of both DTR and RX5, as well as nonlinear analysis (entropy, Hurst exponent, determinism and laminarity) for Africa and South America. The research focuses on identifying the unique signature of climate extremes using linear and nonlinear approaches. The deserts of Africa and South America were found to exhibit lower complexity (determinism greater than 0.7) and higher persistence in RX5 values compared to the rest of the continent. The high complexity observed on the African continent were attributed to dynamic atmospheric circulation patterns in the region. The dynamics of equatorial West Africa and Congo River basin were found to be less complex (determinism greater than 0.3) than the rest of the continent when DTR values were analyzed. Using determinism and laminarity (greater than 0.5), the complexity of the Brazilian highlands were observed to be the highest in both DTR and RX5 analysis. Quantitative analysis of climate extremes using nonlinear approaches have been found to be detailed and useful.
英文关键词	Recurrence quantification analysis; Daily temperature range; Entropy; rx5; Climate extremes; Climate change; African climate; South American climate
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001156836200001
来源期刊	ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/288899
推荐引用方式 GB/T 7714	Ogunjo, Samuel,Fuwape, Ibiyinka,Oluyamo, Sunday,et al. Spatial Dynamical Complexity of Precipitation and Temperature Extremes over Africa and South America[J],2024,60(1).
APA	Ogunjo, Samuel,Fuwape, Ibiyinka,Oluyamo, Sunday,&Rabiu, Babatunde.(2024).Spatial Dynamical Complexity of Precipitation and Temperature Extremes over Africa and South America.ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES,60(1).
MLA	Ogunjo, Samuel,et al."Spatial Dynamical Complexity of Precipitation and Temperature Extremes over Africa and South America".ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES 60.1(2024).