What is it about?
a) Earlier assessment studies point out that the solar energy resource in the Northeastern Brazilian region is higher than most of the European countries with a well-settled solar energy market. b) Kriging interpolation based on data acquired by 129 automated from 2008 till 2015 provided information on spatial distribution patterns and seasonal variability of the incoming solar irradiation. c) Cluster Analysis allowed to identify areas presenting diverse seasonal regimes of the incoming solar irradiation. d) Trend analysis provided preliminary information on future scenarios for the solar energy resource. e) Results can contribute to plan and encourage the solar power generation reducing the impact of the inherent intermittency of the solar power resource in the Brazilian electricity grid.
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Why is it important?
The manuscript provides information and knowledge on the spatial variability of the surface solar irradiation in the Northeastern region of Brazil (NEB). The study aimed at identifying trustful time series of surface solar irradiation using ground data acquired by the automated weather stations operating in NEB territory from 2008 to 2015. It also aimed at investigating the climatological trends in the surface solar radiation data. The results provide information for several issues of high relevance: better understanding and knowledge on the availability and variability of solar energy resource; supporting the methodology development for solar energy forecast, and supporting the Brazilian energy sector in planning and operating the Brazilian Electricity System with increasing solar power contribution.
Perspectives
The information on the spatial and seasonal patterns of the surface solar irradiation in NEB will be helpful in methodology development of forecast solar energy using satellite data, optimization/sizing of solar energy systems, and reducing the impact of the natural intermittency of the solar power resource in the Brazilian electricity grid. Besides that, the proposed methodology would be a useful tool for selecting proper sites to set-up a high-quality solar radiation measurement network. Finally, the results also could provide reliable and valuable data for application in other areas like planning crops and land usage taking into account the solar irradiation climatology.
Dr Fernando Ramos Martins
Universidade Federal de Sao Paulo
Read the Original
This page is a summary of: The seasonal variability and trends for the surface solar irradiation in northeastern region of Brazil, Sustainable Energy Technologies and Assessments, October 2019, Elsevier,
DOI: 10.1016/j.seta.2019.08.006.
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