Please use this identifier to cite or link to this item:
Surface solar extremes in the most irradiated region on earth, Altiplano
Title: Surface solar extremes in the most irradiated region on earth, Altiplano
Authors: Cordero, Raul R.Feron, SarahDamiani, AlessandroSepúlveda, EdgardoJorquera, Jose A.Redondas, Alberto ORCID RESEARCHERID Autor AEMETSeckmeyer, GuntherCarrasco, JorgeRowe, Penny M.Ouyang, Zutao
Keywords: Atmosphere; South America; Extreme events; Surface observations; Shortwave radiation; Renewable energy
Issue Date: 2023
Publisher: AMS
Citation: Bulletin of the American Meteorological Society. 2023, 104(6), E1206–E1221
Publisher version:
Abstract: Satellites have consistently pointed to the Altiplano of the Atacama Desert as the place on Earth where the world’s highest surface irradiance occurs. This region, near the Tropic of Capricorn, is characterized by its high elevation, prevalent cloudless conditions, and relatively low concentrations of ozone, aerosols, and precipitable water. Aimed at studying the variability of the surface solar irradiance and detecting atmospheric composition changes in the Altiplano, an atmospheric observatory was set up in 2016 at the northwestern border of the Chajnantor Plateau (5,148 m MSL, 22.95°S, 67.78°W, Chile). Here, we report on the first 5 years of measurements at this observatory that establish the Altiplano as the region that receives the highest-known irradiation on Earth and illuminate the unique features of surface solar extremes at high-altitude locations. We found that the global horizontal shortwave (SW) irradiance on the plateau is on average 308 W m−2 (equivalent to an annual irradiation of 2.7 MWh m−2 yr−1, the highest worldwide). We also found that forward scattering by broken clouds often leads to intense bursts of SW irradiance; a record of 2,177 W m−2 was measured, equivalent to the extraterrestrial SW irradiance expected at approximately 0.79 astronomical units (AU) from the Sun. These cloud-driven surface solar extremes occur on the Chajnantor Plateau at a frequency, intensity, and duration not previously seen anywhere in the world, making the site an ideal location for studying the response of photovoltaic (PV) power plants to periods of enhanced SW variability.
ISSN: 0003-0007
Appears in Collections:Artículos científicos 2023-2026

Files in This Item:
  File Description SizeFormat 
1,57 MBAdobe PDFThumbnail
Show full item record

Items in Arcimis are protected by Creative Commons License, unless otherwise indicated.

Arcimis Repository
Nota Legal Contacto y sugerencias