JoNova

A science presenter, writer, speaker & former TV host; author of The Skeptic's Handbook (over 200,000 copies distributed & available in 15 languages).


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In a warming world we may get overun by cheap soy and corn

New research shows that the impending climate disaster puts the world in danger of growing too much corn and soy. People won’t know what starving is!

H/t to CO2Science

Qiao et al discovered that when temperatures are raised by a “catastrophic” 2 degrees C, and CO2 is raised to 700 unthinkable ppm corn (aka maize) increases its yield by a remarkable 25%. When hit by both high temperatures and extra CO2, soy bean yield increased even more — by 31%.

Presumably this means crop prices will fall and corn and soy may take over your garden. (So make sure you put in a solar panel to control those new weeds!)

Rumour that nutrient densities will fall — proved to be false. Increased temperature raised the oil content of both crops. And the combo of warmer weather plus CO2 increased most of the nutrients as well. Both crops had more phosphorus, potassium, iron, and zinc. There was a statistically small decrease in calcium in maize, so small it may not be there. The only mineral that definitely declined was manganese in soybeans, and as far as humans go, there is apparently no one on Earth who has a clinical manganese deficiency [...]

Burn oil so we can eat more chocolate

The fake scare of the season — “climate change is impacting chocolate production”.

Chocolate is produced from the beans that grow on cocoa trees. These plants can only grow in a fairly narrow range of conditions, which makes them vulnerable to changes in the environment.

Unfortunately, climate change is threatening some of these key growing regions. According to the IPCC, rising temperatures and a relative reduction in rainfall could make areas like West Africa less suitable for cocoa production in the future. Changes to the climate are also pushing cocoa-growing regions to higher altitudes in some parts of the world, which can make some crops unsustainable.

We can see just how hard cocoa crops have been hit by record heat and 500 billion tons of carbon.

Global Cocoa production

Since 1989 humans have put out more than 50% of all anthropogenic CO2 emissions since homo sapiens went sapien. There is an undeniable trend here.

Happy Easter to everyone.

h/t Dave B

If world warmed — crops could grow another 1,200 km further North

Climate change might bring more food as it expands into the arctic. In a big surprise, scientists found that agriculture works best in places without much snow and ice.

Burn oil and feed the world

Only a third of the giant northern boreal forest is able to be cropped at the moment. With any luck, serious global warming will set in, allowing us to raise the edge of the zone of arable land and feed millions more hungry people.

Obviously , we need to spend billions to stop this.

Though Canadians and Russians may disagree (especially if they thought CO2 actually mattered, but who does?).

Given CO2′s mixed performance in the last hundred years, I predict disappointment…

[...]

Record hottest year means record bumper wheat crop, opposite of crop models

Last year there were warnings from crop modelers in Nature that heat kills wheat and yields were going to fall in the “near future”, if temperatures rose. In fact global warming was “already slowing wheat gains”. What followed was a record El Nino, and 2015 was the hottest ever year, with 2016 vying to beat it. But instead of wheat doom, this month the USDA forecasts a record yield of wheat with bumper crops globally. Wheat output has grown in Australia, the US, Russia, Ukraine, everywhere pretty much, except the EU where it has been too rainy. Where are the mea culpas? h/t to the GWPF

Jan 2015, published in Nature. “Global Wheat Yield May Drop as Temperatures Rise”

“… researchers are now letting farmers know that the world’s wheat yields are excepted decline in the near future, with the world standing to lose six percent of its wheat crop for every degree Celsius that the annual global temperature increases.

“The simulations with the multi-crop models showed that warming is already slowing yield gains, despite observed yield increases in the past, at a majority of wheat-growing locations across the globe,” researcher Senthold Asseng, at the University [...]

18 million square kilometers more greenery due to “carbon pollution” that the Greens hate

What kind of pollution do you want to feed your plants? The carbon kind.

Yet again, a satellite study of leaf area shows that the world is greener than it was in 1982. There are more plants mostly thanks to CO2 aerial fertilization. The biggest benefits from CO2 are in the warm tropics. The extra greenery in colder areas was due to that other disaster called “global warming”. About a tenth of the greening had nothing to do with either carbon pollution or extra warmth and was apparently thanks to nitrogen from man-made fertilizers.

Obviously we need a $10 billion dollar program to stop this immediately.

Click to enlarge.

Humans are Greening planet Earth — ABC

The most comprehensive modelling of remote sensing data so far shows the area on Earth covered by plants in this time has increased by 18 million square kilometres — about 2.5 times the size of the Australian continent — largely due to the fertilising effect of carbon dioxide (CO2).

“[The greening] has the ability to fundamentally change the cycling of water and carbon in the climate system,” said Dr Zaichun Zhu, from Peking University in China and lead author [...]

Death, disease, coming in 2050 says model of model

“Half a million deaths by 2050!”

The Lancet study in a nutshell: Take climate models that don’t work, and guesstimate what might happen to agriculture because of the climate we probably won’t get. Then use those guesses of food production in 2050 to fantasize what that means for human mortality. After all, we don’t know how many people are killed today by “4% less fruit and vege and 0.7% less meat”, but we can estimate what that dietary change will do in 2050 after a medical revolution, 35 years of plant breeding and agricultural changes. Not to mention a few more rounds of global food fads and phases of Vegan, Paleo, Atkins, and 5:2 Fasting. (But how did they factor in the mortality effect from another 2,000 episodes of MasterChef?)

Seriously, CO2 has increased crop yields, and will continue to do so until we hit 1000ppm (or maybe 2000). Around the planet, plants grow in warm places, and shrivel up and die in cold ones. So do people. Cold kills 20 times as many people as heat does. It must take a lot of modeling to calculate “more deaths” from two good outcomes.

Look at where fruit grows. [...]