Solar linked 2C downturn in Canadian prairie temperatures affecting grain yields.

Quiet sun [image credit: NASA]

H/t to Electroverse for the heads up on this paper detailing the effect of reduced solar activity and cyclic oceanic oscillations on Canadian agriculture. Let’s hope the policymakers see through the warming dogma in time.

Is Diminishing Solar Activity Detrimental to Canadian Prairie Agriculture?

Ray Garnett¹*, Madhav Khandekar² and Rupinder Kaur³

Abstract: During the grain growing months of May-July, the mean temperature on the Canadian prairies has cooled down by 2ºC in the last 30 years. The cooling appears to be most certainly linked to diminishing solar activity as the Sun approaches a Grand Solar Minimum in the next decade or so. This cooling has led to a reduction in Growing Degree Days (GDDs) and has also impacted the precipitation pattern. The GDDs in conjunction with mean temperature and precipitation are important parameters for the growth of various grains (wheat, barley, canola etc.) on the prairies.

In this study, we investigate the impact of declining GDDs and associated temperature and precipitation patterns on Prairie grain yields and quality. Our analysis shows that there has been a loss of about 100 GDDs over the time frame of 1985-2019. The loss in GDDs is also linked to some of the large-scale Atmosphere-Ocean parameters like the Pacific Decadal Oscillation (PDO), North Pacific Index (NPI) and Arctic Oscillation (AO). Our analysis suggests grain yield and quality could be significantly impacted in the coming years as solar activity continues to diminish.

Full paper here

via Tallbloke’s Talkshop

October 26, 2020 at 01:51PM

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