Climate Change and Crop Production

Pro: Climate Change Will Cause Food Shortages
Climate changes projected by global climate models are consistent with observed climate changes of concern to agriculture (Ch. 2: Climate).41,42,43 Climate change has the potential to adversely impact agricultural productivity at local, regional, and continental scales.44 Crop and livestock production in certain regions will be adversely impacted both by direct effects of climate change (such as increasing trends in daytime and nighttime temperatures; changes in rainfall patterns; and more frequent climate extremes, flooding, and drought) and consequent secondary effects (such as increased weed, pest, and disease pressures; reduced crop and forage production and quality; and damage to infrastructure). While climate change impacts on future agricultural production in specific regions of the United States remain uncertain, the ability of producers to adapt to climate change through planting decisions, farming practices, and use of technology can reduce its negative impact on production (Ch. 21: Midwest, Case Study “Adaptation in Forestry”).45

Risks associated with climate changes depend on the rate and severity of the changes and the ability of producers to adapt to changes. The severity of financial risks also depends on changes in food prices as well as local-to-global trade levels, as production and consumption patterns will likely be altered due to climate change.10,46 Many countries are already experiencing rapid price increases for basic food commodities, mainly due to production losses associated with more frequent weather extremes and unpredictable weather events. The United States is a major exporter of agricultural commodities,47 and a disruption in its agricultural production will affect the agricultural sector on a global scale. Food security, which is already a challenge across the globe, is likely to become an even greater challenge as climate change impacts agriculture.48,49 Food security will be further challenged by projected population growth and potential changes in diets as the world seeks to feed a projected 9.8 billion people by 2050.50,51,52

https://nca2018.globalchange.gov/chapter/10/  (Fourth National Climate Assessment)

https://everythingclimate.com/climate-change-and-crop-production/

Unverified and Unvalidated
23 hours ago Willis Eschenbach 
Guest Post by Willis Eschenbach (@WEschenbach on X, my personal blog is here)

Dear friends, pull up a chair and pour a good strong coffee.

Because today’s topic is a real treat: yet another “Indicators of Global Climate Change” paper, this time the 2025 update, in which a team of the usual suspects announce—for the thirty’leventh time—that the planet is warming, that evil humans did it, and they can now put single decimal numbers on “human induced warming” and the remaining carbon budget as though the climate system were a well debugged spreadsheet rather than a barely observed, non linear, chaotic, multiscale nightmare.

People misunderestimate the complexity of the climate. It has no less than six major subsystems: atmosphere, hydrosphere, lithosphere, biosphere, cryosphere, and electrosphere. Each of these systems has its own internal cycles, forcings, responses, and resonances. And all of them are constantly interacting at spatial scales from the molecular to the planetary, and temporal scales from nanoseconds to millennia. Willis’s First Rule of Climate states, “In the climate, everything is connected to everything else, which in turn is connected to everything else … except when it’s not”. It’s the most complex system we’ve ever tried to model, and we’ve barely scratched the surface.
 
Now, don’t get me wrong. I’ve written lots of computer models. I like indicators. I like data. I like having regular snapshots of where we are.

But what I don’t like is pretending that running the same assumptions through a slightly updated sausage machine counts as validation of anything. These folks are not testing the system. They’re just doing annual bookkeeping within an untested framework and then declaring victory. That’s not science; that’s climate accounting with a side of unwarranted confidence.

https://wattsupwiththat.com/2026/06/13/unverified-and-unvalidated/

This genie will never be put back into the bottle......

https://www.youtube.com/watch?v=aYywnZFPe6g

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