Total solar irradiance on Earth appears to have decreased, from when measurements began in the 1950s. It continued into the 1990s, and has started to slowly re

Total solar irradiance on Earth appears to have decreased, from when measurements began in the 1950s. It continued into the 1990s, and has started to slowly reverse in recent decades. [1] Gasses and particulate pollution from industrial combustion is thought to be much of the reason. The dimming is worse over large industrialized regions. Greying out the sky with ash and smog. It likely began in the 19th century, and was probably masking the effects of greenhouse-gas-driven warming. [1] https://en.wikipedia.org/wiki/Global_dimming https://en.wikipedia.org/wiki/Global_dimming