A new look at sunspots

NASA’s extensive fleet of spacecraft allows scientists to study the Sun extremely close-up – one of the agency’s spacecraft is even on its way to fly through the Sun’s outer atmosphere. But sometimes taking a step back can provide new insight.

The dimmest state of the Sun: TSI and Global warming

This new paper raises some questions about the role of total solar irradiance (TSI) and global warming. OTOH hand its all computer modeling, so take it with a grain of salt. h/t to Dr. Leif Svalgaard. The role of solar forcing in global warning is unclear due to the uncertainty in the change in TSI…

New prediction of Solar Cycle 25

Prediction of Solar Cycle 25 Leif Svalgaard1* 1W.W. Hansen Experimental Physics Laboratory, Stanford University Cypress Hall, C3, 466 Via Ortega, Stanford, CA 94305-4085 *Corresponding author: Leif Svalgaard (leif@leif.org) ABSTRACT Prediction of solar cycle is an important goal of Solar Physics both because it serves as a touchstone for our understanding of the sun and also…

New Solar Orbiter data reveals the sun at its quietest

Three of the Solar Orbiter spacecraft’s instruments, including Imperial’s magnetometer, have released their first data. The European Space Agency’s Solar Orbiter spacecraft launched in February 2020 on its mission to study to Sun and it began collecting science data in June. Now, three of its ten instruments have released their first tranche of data, revealing the state…

Solar Cycle 25 has officially begun

Solar Cycle 25 is officially underway. NASA and NOAA made the announcement during a media teleconference earlier today. According to an international panel of experts, sunspot counts hit rock bottom in Dec. 2019, and have been slowly increasing since. NASA and NOAA made the announcement during a media teleconference earlier today. According to an international panel of…

The Carrington Event: September 1st, 1859

In fact, it was this same time of year back in 1859 when a super solar storm – now known as the “Carrington Event” – took place during another weak solar cycle (#10). The event has been named for the British astronomer, Richard Carrington, as he observed from his own private observatory the largest solar flare which caused a major coronal mass ejection (CME) to travel directly toward Earth.

Squeezing The Sponge

Over in the Tweetosphere, where I’m @WEschenbach, I read that we’re in for rainy times: The atmosphere cools and shrinks when the Sun gets sleepy. Rain is wrung out of it like a sponge. We have been entering a solar grand minimum since 2008. The bottom of it will be around 2035. There are two…