3 New Studies Find Increasing Trends In Solar Radiation Since The 1980s – Easily Explaining Warming
By Kenneth Richard on 22. June 2026
“These findings indicate that the primary driver of air temperature increase in Kraków is the rise in SD (solar radiation influx) rather than [CO2] radiative forcing (∆F).”
New research shows internal or natural changes in cloud structure have allowed more solar radiation to reach the surface in recent decades as documented by the widespread increase in sunshine duration (SD).
The increase in SD is the primary driver of warming since the 1980s, explaining both the temperature variability and trend.
“…the main factor driving the rise in temperature after 1988 was also a radical increase in sunshine. These results indicate the fundamental role of changes in cloud structure, and consequently sunshine, in shaping the observed rise in air temperature.”
“The regression analysis revealed that the variability of the three considered factors – SD, the intensity of the western circulation in winter (NAO), and radiative forcing (∆F) – completely explained (within the estimation errors) the observed increase in annual air temperature in Kraków.”
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