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10 March 2023 Photovoltaic surfaces to reverse global warming (Conference Presentation)
Ian R. Sellers, Christiana B. Honsberg, Stuart G. Bowden, Richard R. King, Stephen M. Goodnick
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Proceedings Volume PC12416, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XII; PC1241604 (2023) https://doi.org/10.1117/12.2653272
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
Climate change and its many associated impacts are among the most serious and pressing global challenges. Photovoltaics (PV) is instrumental in the mitigation of CO2 through the generation of low carbon electricity. However, the goal of limiting global warming to 1.5°C requires additional approaches. This paper presents how PV surfaces can reverse the Earth’s radiative imbalance caused by increasing atmospheric greenhouse gases and thereby stabilize global temperatures. The benefits are realized by: (1) high effective albedo between 30 – 40% (2) maximizing thermally emitted radiation; and (3) active infrared emission averaging 300 W/m2 through atmospheric wavelength windows, e.g., at 1.5-1.75 micron. With such PV surfaces, we show that 25 TW of PV can reverse or mitigate global warming.
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Ian R. Sellers, Christiana B. Honsberg, Stuart G. Bowden, Richard R. King, and Stephen M. Goodnick "Photovoltaic surfaces to reverse global warming (Conference Presentation)", Proc. SPIE PC12416, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XII, PC1241604 (10 March 2023); https://doi.org/10.1117/12.2653272
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KEYWORDS
Photovoltaics
Climate change
Earth's atmosphere
Carbon
Carbon dioxide
Gases
Infrared radiation
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