This is why the cyclones are building. All the extra heat from...

This is why the cyclones are building.

All the extra heat from solar panels.

Rooftop PV installations could raise daytime temperatures in urban environments by up to 1.5 C

New research from India shows that rooftop PV system may have “unintended” consequences on temperartures in urban environments. Rooftop arrays, for example, may potentially lower nighttime temperatures by up to 0.6  C.

An international group of scientists has created a new model for the assessment of rooftop photovoltaic solar panels (RPVSPs) in urban microclimates.

The combined approach, named the WRF/BEP + BEM model, can calculate heat exchange, momentum, humidity, and turbulent kinetic energy flux between buildings and the outdoor environment under stable atmospheric conditions. It was initially tested in the Indian city of Kolkata and then validated in Sydney, Australia; Austin, Texas, USA; Athens, Greece; and Brussels, Belgium, to ensure that the findings are not limited to a specific climatic zone.

According to the data collected in Kolkata, RPVSPs can increase daytime near-surface air temperatures by up to 1.5 C, as they absorb approximately 90% of solar energy, converting up to approximately 20% of it into electricity, while the remainder contributes to their warming. At nighttime, on the other hand, full city PV coverage can reduce nighttime maximum near-surface air temperatures by up to 0.6 C. In peak heat hours, the roof surface temperature would rise by up to 3.2 C and have an average cooling of 1.4 at night.

The near-surface air temperatures were similar across the board. Sydney experienced a 0.8 C cooling at night and a 1.9 C rise during the day; Austin showed a cooling of 0.7 C and a rise of 1.8 C, while Athens had 0.4 C and 1.2 C, respectively. Brussels's results showed a night cooling of 0.3 C and a day rise of 1.1 C.

Verdict - destroy all solar panels

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