气候变化领域集成服务门户(CCPortal): Fifty-six years of surface solar radiation and sunshine duration over São Paulo, Brazil: 1961-2016

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DOI	10.5194/acp-21-6593-2021
	Fifty-six years of surface solar radiation and sunshine duration over São Paulo, Brazil: 1961-2016
	Akemi Yamasoe M.; Manuel Évora Rosário N.; Novaes Santos Martins Almeida S.; Wild M.
发表日期	2021
ISSN	1680-7316
起始页码	6593
结束页码	6603
卷号	21 期号:9
英文摘要	pA total of 56 years (1961-2016) of daily surface downward solar irradiation, sunshine duration, diurnal temperature range and the fraction of the sky covered by clouds in the city of São Paulo, Brazil, were analysed. The main purpose was to contribute to the characterization and understanding of the dimming and brightening effects on solar global radiation in this part of South America. As observed in most of the previous studies worldwide, in this study, during the period between 1961 and the early 1980s, a negative trend in surface solar irradiation was detected in São Paulo, characterizing the occurrence of a dimming effect. Sunshine duration and the diurnal temperature range also presented negative trends, in opposition to the positive trend observed in the cloud cover fraction. However, a brightening effect, as observed in western industrialized countries in more recent years, was not observed. Instead, for surface downward irradiation, the negative trend persisted, with a trend of span classCombining double low line"inline-formula"-0.13/span MJ mspan classCombining double low line"inline-formula"-2/span per decade, with a span classCombining double low line"inline-formula"ip/i/span value of 0.006, for the 56 years of data and in consonance with the cloud cover fraction increasing trend, but not statistically significant, of 0.3 % per decade (span classCombining double low line"inline-formula"ip/i/span value span classCombining double low line"inline-formula"Combining double low line/span 0.198). The trends for sunshine duration and the diurnal temperature range, by contrast, changed signal, as confirmed by a piecewise linear regression model. Some possible causes for the discrepancy are discussed, such as the frequency of fog occurrence, urban heat island effects, horizontal visibility (as a proxy for aerosol loading variability) and greenhouse gas concentration increase. Future studies on the aerosol effect are planned, particularly with higher temporal resolution, as well as modelling studies, to better analyse the contribution of each possible cause./p. © 2021 EDP Sciences. All rights reserved.
语种	英语
scopus关键词	cloud cover; heat island; irradiation; solar radiation; Brazil; Sao Paulo [Brazil]; Sao Paulo [Sao Paulo (STT)]
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246931
作者单位	Departamento de Ciências Atmosféricas, Instituto de Astronomia, Universidade de São Paulo, São Paulo, 05508-090, Brazil; Departamento de Ciências Ambientais, Universidade Federal de São Paulo, Diadema, São Paulo, Brazil; Seção de Serviços Meteorológicos Do Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo, Brazil; Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland
推荐引用方式 GB/T 7714	Akemi Yamasoe M.,Manuel Évora Rosário N.,Novaes Santos Martins Almeida S.,et al. Fifty-six years of surface solar radiation and sunshine duration over São Paulo, Brazil: 1961-2016[J],2021,21(9).
APA	Akemi Yamasoe M.,Manuel Évora Rosário N.,Novaes Santos Martins Almeida S.,&Wild M..(2021).Fifty-six years of surface solar radiation and sunshine duration over São Paulo, Brazil: 1961-2016.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(9).
MLA	Akemi Yamasoe M.,et al."Fifty-six years of surface solar radiation and sunshine duration over São Paulo, Brazil: 1961-2016".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.9(2021).