Reply #2: solar irradiance is a mostly discredited hypothesis.

[laconicsax]

From the same article:

"His views are completely at odds with the mainstream scientific opinion," said Colin Wilson, a planetary physicist at England's Oxford University.

"And they contradict the extensive evidence presented in the most recent IPCC report."

Amato Evan, a climate scientist at the University of Wisconsin, Madison, added that "the idea just isn't supported by the theory or by the observations."

and

Perhaps the biggest stumbling block in Abdussamatov's theory is his dismissal of the greenhouse effect, in which atmospheric gases such as carbon dioxide help keep heat trapped near the planet's surface.

He claims that carbon dioxide has only a small influence on Earth's climate and virtually no influence on Mars.

But "without the greenhouse effect there would be very little, if any, life on Earth, since our planet would pretty much be a big ball of ice," said Evan, of the University of Wisconsin.

don't forget:

"The solar irradiance began to drop in the 1990s, and a minimum will be reached by approximately 2040," Abdussamatov said. "It will cause a steep cooling of the climate on Earth in 15 to 20 years."

If the solar irradiance hypothesis reflected an accurate model, then we'd be seeing a cooling period starting about 10 years ago, rather than a warming period starting well before that.