Sentences with phrase «past grand minimum»

Lubin and other scientists predict a significant probability of a near - future grand minimum because the downward sunspot pattern in recent solar cycles resembles the run - ups to past grand minimum events.

Lubin and other scientists predict a significant probability of a near - future grand minimum because the downward sunspot pattern in recent solar cycles resembles the run - ups to past grand minimum events.

Not exact matches

However, in light of our substantiation of the effects of «grand solar minima» upon past global climates, it could be speculated that the current pausing of «Global Warming», which is frequently referenced by those sceptical of climate projections by the IPCC, might relate at least in part to a countervailing effect of reduced solar activity, as shown in the recent sunspot cycle.»

It remains to be seen whether this prognosis turns out to be true (there have been some doubts expressed), but since grand minima of solar activity did occur in the past, it is certainly interesting to explore what effects such a minimum might have on 21st century climate if it did occur.

A more detailed analysis of the past four major abrupt cooling events shows that all of them coincide with periods of one or a cluster of grand solar minima suggesting that they are mainly due to low solar activity.

I googled for De Jager and Duhau 2012 and found this, Sudden transitions and grand variations in the solar dynamo, past and future, a paper that attempts to forecast Solar Grand Minimums, not one that suggests the Grand Minimums are causing the changing ocean temperatgrand variations in the solar dynamo, past and future, a paper that attempts to forecast Solar Grand Minimums, not one that suggests the Grand Minimums are causing the changing ocean temperatGrand Minimums, not one that suggests the Grand Minimums are causing the changing ocean temperatGrand Minimums are causing the changing ocean temperatures.

There is ample circumstantial evidence that it has a significant impact, such as the Little Ice Age that occurred during the last grand minimum, as well as the unusually cold climates that also matched past weak cycles, now, and also in the early 19th and 20th centuries.

Its obvious the Sun is agitated on a regular basis in the past, because the Dalton finished early and we missed grand minimum at SC20, we have experienced a prolonged era of solar activity in recent times.

It also bears reminding that any offset from a solar Grand Minimum would be temporary as past minima only lasted a few decades to a century.

One could do far better with an empirical model of past grand solar minima.

The models heavily relied upon by the Intergovernmental Panel on Climate Change (IPCC) had not projected this multidecadal stasis in «global warming»; nor (until trained ex post facto) the fall in TS from 1940 - 1975; nor 50 years» cooling in Antarctica (Doran et al., 2002) and the Arctic (Soon, 2005); nor the absence of ocean warming since 2003 (Lyman et al., 2006; Gouretski & Koltermann, 2007); nor the onset, duration, or intensity of the Madden - Julian intraseasonal oscillation, the Quasi-Biennial Oscillation in the tropical stratosphere, El Nino / La Nina oscillations, the Atlantic Multidecadal Oscillation, or the Pacific Decadal Oscillation that has recently transited from its warming to its cooling phase (oceanic oscillations which, on their own, may account for all of the observed warmings and coolings over the past half - century: Tsoniset al., 2007); nor the magnitude nor duration of multi-century events such as the Mediaeval Warm Period or the Little Ice Age; nor the cessation since 2000 of the previously - observed growth in atmospheric methane concentration (IPCC, 2007); nor the active 2004 hurricane season; nor the inactive subsequent seasons; nor the UK flooding of 2007 (the Met Office had forecast a summer of prolonged droughts only six weeks previously); nor the solar Grand Maximum of the past 70 years, during which the Sun was more active, for longer, than at almost any similar period in the past 11,400 years (Hathaway, 2004; Solankiet al., 2005); nor the consequent surface «global warming» on Mars, Jupiter, Neptune's largest moon, and even distant Pluto; nor the eerily - continuing 2006 solar minimum; nor the consequent, precipitate decline of ~ 0.8 °C in TS from January 2007 to May 2008 that has canceled out almost all of the observed warming of the 20th century.