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Smoke from fires reduced solar radiation by 20% in August

According to Tempo OK, the North and Central-West regions were the most affected due to the accumulation of particulate matter in the atmosphere.

Smoke from fires reduced solar radiation by 20% in August

Smoke from forest fires spreads across Brazil and poses health risks. Photo: Freepik

The meteorological company Tempo OK found that the solar radiation in August presented reduction of up to 20% em various regions of the country because smoke from the fires. 

The most affected states were Rondônia, Acre, Amazonas, Mato Grosso and Mato Grosso do Sul. These regions concentrate about 2,5 GW in photovoltaic systems. 

Second Jorge Rosas, radiative transfer specialist at Tempo OK, the high concentration of particles suspended in the atmosphere, known as aerosols, was the main factor behind this drop.

“It is as if a dense and constant cloud was present over the areas affected by the fires throughout the month,” explains the weatherman.

Increase in fires impacts the electricity sector, warns Climatempo

Solar energy generation was most affected in the North and Central-West regions of Brazil, due to the accumulation of particulate matter in the atmosphere. 

No Rio Grande do Sul, the drop in solar radiation resulted from both variable cloudiness throughout August and the presence of aerosols from the fires, transported by the winds.

Yes, in eastern Bahia, the reduction in irradiation was less influenced by these aerosols and occurred mainly due to cloud cover account.

Irradiation: Climatology for August, total recorded in August, anomaly recorded in August (from left to right). Image: Weather OK/Disclosure

A solar irradiation climatology varies between 5.5 kWh/m^2 day and 6 kWh/m^2 day in Rondônia, Acre, southern Amazonas and western Mato Grosso and from 4.5 kWh/m^2 day to 5.5 kWh/m^2 day in western Mato Grosso do Sul. 

However, the values ​​recorded throughout the month were between 4 kWh/m^2 day and 5 kWh/m^2 day, a reduction of approximately 20% compared to the average. 

Most critical days of the month: August 28, 29, 30 and 31 Image: Tempo OK/Disclosure

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Wagner Freire
About the Author
Wagner Freire

Wagner Freire is a journalist graduated from FMU. He worked as a reporter for Jornal da Energia, Canal Energy and Agência Estado. Covering the electricity sector since 2011. Has experience in covering events such as energy auctions, conventions, lectures, fairs, congresses and seminars.

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