In a new weekly update for PV -MagazineSolcast, a DNV company, reports that large parts of South America have recorded a small net increase in solar radiation this winter, despite sharp contrasts from month to month in June and July.
The winter in South America brought sharp contrasts from month to month for solar generation, because the region experienced fluctuations between unusually cold conditions and clear skies. While June and July largely compensated each other in terms of radiation deviations, August closed the season with more balanced conditions, which resulted in a slight net increase in available irradiation over large parts of the continent. In the meantime, extreme cold tested energy systems in the southern cone and brought rare winter events to some of the sunny regions in the world, according to analysis using the Solcast API.
June and July supplied almost set-up patterns and effectively neutralized the seasonal abnormalities until August. About the Andes, Brazil, Uruguay, Paraguay and in parts of Noord -Zuid -Arikika, the last winter photo showed a modest increase in the available solar resource. The variability from month to month was powered by reversations in dominant weather patterns, with more clouds than usual circumstances in one month that took place in the following month for clearer skies. Augustus led to more consistent circumstances, which led to a large part of the continent that experienced an almost average winter, despite variation from month to month, as seen in the example PV sitem modeling below.
Despite a neutral Enso -state in the Pacific, a rare Atlantic Niña event added complexity to regional weather dynamics. Unlike the counterpart of the Pacific, the effects of the Atlantic Niña are less known, but they are still associated with shifts in rainfall distribution in Brazil and the Amazon basin. Although direct effects on solar radiation remain difficult to quantify, shifts in cloud cover and precipitation patterns related to the Atlantic have played a role in the variability that was seen in Brazil.
A remarkable weather event had an influence on the renewable generation and the demand for energy at the end of June, when a polar anti -clone settled in South -South America. This high-pressure system locked in ice-cold air and pushed Argentina and Chile to record some of their coldest temperatures in decades-the lowest worldwide outside polar regions. The demand for energy enriches sharply, which led to black -outs and natural guest deficits in different regions. The cold Snap was strong enough to produce snow in the Atacama desert of Chile, an area that was usually noticed because of its dryness and high solar energy.
In Peru, a large fabric storm offered a clear example of how aerosols can match the cloud or even exceed their impact on solar radiation. Images of Nasa’s Aqua -Satellite showed thick fabric plumes that were driven in the interior by strong wind, where they collected along the western slopes of the Andes. The resulting radiation losses were more important than it caused by dense cloud cover, which emphasizes the relevance of aerosol monitoring in dry and semi-arid regions such as the west coast of South America.
Dissolved Produces these figures by following clouds and aerosols with a resolution of 1-2 km worldwide, with the help of satellite data and own Ai/ml -algorithms. This data is used to stimulate radiation models, so Solcast is able to calculate the radiation at high resolution, with a typical distortion of less than 2%, and also cloud-tracking predictions. This data is used by more than 350 companies that manage more than 300 GW of solar assets worldwide.
The views and opinions expressed in this article are the author, and do not necessarily reflect it by PV -Magazine.
This content is protected by copyright and may not be reused. If you want to work with us and reuse part of our content, please contact: editors@pv-magazine.com.
Popular content
