Monster minimum or short solar cycle? Guest essay by David Archibald This recent post was on the fact that the Sun’s EUV emissions had fallen to solar minimum-like levels well ahead of solar minimum. The implication was that the Solar Cycle 24/25 minimum was either going to be very deep and prolonged, or that Solar…
Guest essay by David Archibald The people of Canberra are the richest in Australia so they voted in a provincial government that proved how virtuous they were by increasing the proportion of their power supply that came from wind and solar sources. As a consequence, the cost of power went up and the people of…
Guest essay by David Archibald From a post a couple of days ago: “an F10.7 flux above 100 causes warming and below that level causes cooling.” Greg asked “Can you prove that?” I already had in this WUWT post from 2012. But it is worth revisiting the subject because it answers the big question –…
Guest essay by David Archibald Back in late April, European wine growers were hit by the most damaging frost since 1991. That frost affected vines as far south as Tuscany. More recently it is the western Corn Belt that has been affected by late Spring frost. The following two figures show damage to crops from…
Guest essay by Mike Jonas “And what might they be?” – Dr. Leif Svalgaard For a long time, I have been bitterly disappointed at the blinkered lopsided attitude of the IPCC and of many climate scientists, by which they readily accepted spurious indirect effects from CO2-driven global warming (the “feedbacks”), yet found a range of…
Solar cycle 24 has seen very low solar activity thus far, likely the lowest in 100 years. Guest essay by David Archibald Figure 1: F10.7 Flux 2014 – 2017 The F10.7 flux shows that over the last three and a half years the Sun has gone from solar maximum through a bounded decline to…
Our resident solar physicist, Dr. Leif Svalgaard sends word of this paper: Climate responses to SATIRE and SIM-based spectral solar forcing in a 3D atmosphere-ocean coupled GCM Abstract We apply two reconstructed spectral solar forcing scenarios, one SIM (Spectral Irradiance Monitor) based, the other the SATIRE (Spectral And Total Irradiance REconstruction) modeled, as inputs…
