If governments stick to their policies (which they have been notoriously bad at so far) then the reduction would only be 10-30%. I’d expect even a 10% decrease to have massive knock on effects to the nutrition and mortality of the world. I expect that is not included in the impact lab report because it is very hard to have papers that encompass the entire scope of the climate crisis.
Of course there could be a lot of changes to how and where we grow crops to avoid these problems, but making sure that we manage this transition well, so that people in the global south can adopt the appropriate crops for whatever their climate becomes seems like something that could use some detailed analysis. It seems neglected as far as I can tell, there may be simple things we can do to help. It is not mainstream climate change mitigation though, so might fit your bill?
You’d need to think there was a very significant failure of markets to assume that food supplies wouldn’t be adapted quickly enough to minimize this impact. That’s not impossible, but you don’t need central management to get people to adapt—this isn’t a sudden change that we need to prep for, it’s a gradual shift. That’s not to say there aren’t smart things that could significantly help, but there are plenty of people thinking about this, so I don’t see it as neglected of likely to be high-impact.
I’m expecting the richer nations to adapt more easily, So I’m expecting a swing away from food production in the less rich nations as poorer farmers would have a harder time adapting as there farms get less productive (and they have less food to sell). Also farmers with now unproductive land would struggle to buy food on the open market
I’d be happy to be pointed to the people thinking about this and planning on having funding for solving this problem. Who are the people that will be funding the teaching of subsistence rice farmers (of all nationalities) how to farm different crops they are not used to etc? Providing tools and processing equipment for the new crop. Most people interested in climate change I have met are still in the hopeful mitigation phase and if they are thinking about adaptation it is about their own localities.
This might not be a pressing problem now[1], but it could be worth having charities learning in the space about how to do it well (or how to help with migration if land becomes uninhabitable).
The way climate scientists use those terms, I think of safeguarding soil quality and genetically engineering or otherwise modifying new crops for the heat as more of climate change adaption than mainstream mitigation problem.
Tony Allan who I quoted in a different comment also believed that there are a bunch of other ecological problems with the future of our current soil quality. This does seem important?
I don’t know nearly enough about the field to have any opinions on tractability or neglectedness (David Manheim who commented below seems to know more).
That said, I personally would be quite surprised if worldwide crop yields actually ended up decreasing by 10-30%. (Not an informed opinion, just vague intuitions about econ).
That said, I personally would be quite surprised if worldwide crop yields actually ended up decreasing by 10-30%. (Not an informed opinion, just vague intuitions about econ).
I hope they won’t too, if we manage to develop the changes we need to make before we need them. Economics isn’t magic
But I wanted to point out that there will probably be costs associated with stopping deaths associated with food shortages with adaptation. Are they bigger or smaller than mitigation by reducing CO2 output or geoengineering?
This case hasn’t been made either way to my knowledge and could help allocate resources effectively.
I found this report on adaptation, which suggest adaptation with some forethought will be better than waiting for problems to get worse. Talks about things other than crops too. The headlines
Without adaptation, climate change may depress growth in global agriculture yields up to 30 percent by 2050. The 500 million small farms around the world will be most affected.
The number of people who may lack sufficient water, at least one month per year, will soar from 3.6 billion today to more than 5 billion by 2050.
Rising seas and greater storm surges could force hundreds of millions of people in coastal cities from their homes, with a total cost to coastal urban areas of more than $1 trillion each year by 2050.
Climate change could push more than 100 million people within developing countries below the poverty line by 2030. The costs of climate change on people and the economy are clear. The toll on human life is irrefutable. The question is how will the world respond: Will we delay and pay more or plan ahead and prosper?
On 1) not being able to read the full text of the impactlab report, but it seem they just model the link between heat and mortality, but not the impact of heat on crop production causing knock on health problems. E.g. http://dels.nas.edu/resources/static-assets/materials-based-on-reports/booklets/warming_world_final.pdf suggests that each degree of warming would reduce the current crop yields by 5-15%. So for 4 degrees warming (baseline according to https://climateactiontracker.org/global/temperatures/ ), this would be 20-60% of world food supply reduction.
If governments stick to their policies (which they have been notoriously bad at so far) then the reduction would only be 10-30%. I’d expect even a 10% decrease to have massive knock on effects to the nutrition and mortality of the world. I expect that is not included in the impact lab report because it is very hard to have papers that encompass the entire scope of the climate crisis.
Of course there could be a lot of changes to how and where we grow crops to avoid these problems, but making sure that we manage this transition well, so that people in the global south can adopt the appropriate crops for whatever their climate becomes seems like something that could use some detailed analysis. It seems neglected as far as I can tell, there may be simple things we can do to help. It is not mainstream climate change mitigation though, so might fit your bill?
You’d need to think there was a very significant failure of markets to assume that food supplies wouldn’t be adapted quickly enough to minimize this impact. That’s not impossible, but you don’t need central management to get people to adapt—this isn’t a sudden change that we need to prep for, it’s a gradual shift. That’s not to say there aren’t smart things that could significantly help, but there are plenty of people thinking about this, so I don’t see it as neglected of likely to be high-impact.
I’m expecting the richer nations to adapt more easily, So I’m expecting a swing away from food production in the less rich nations as poorer farmers would have a harder time adapting as there farms get less productive (and they have less food to sell). Also farmers with now unproductive land would struggle to buy food on the open market
I’d be happy to be pointed to the people thinking about this and planning on having funding for solving this problem. Who are the people that will be funding the teaching of subsistence rice farmers (of all nationalities) how to farm different crops they are not used to etc? Providing tools and processing equipment for the new crop. Most people interested in climate change I have met are still in the hopeful mitigation phase and if they are thinking about adaptation it is about their own localities.
This might not be a pressing problem now[1], but it could be worth having charities learning in the space about how to do it well (or how to help with migration if land becomes uninhabitable).
[1] https://blogs.ei.columbia.edu/2018/07/25/climate-change-food-agriculture/ suggests that some rice producing regions might have problems soon
The way climate scientists use those terms, I think of safeguarding soil quality and genetically engineering or otherwise modifying new crops for the heat as more of climate change adaption than mainstream mitigation problem.
Tony Allan who I quoted in a different comment also believed that there are a bunch of other ecological problems with the future of our current soil quality. This does seem important?
I don’t know nearly enough about the field to have any opinions on tractability or neglectedness (David Manheim who commented below seems to know more).
That said, I personally would be quite surprised if worldwide crop yields actually ended up decreasing by 10-30%. (Not an informed opinion, just vague intuitions about econ).
I hope they won’t too, if we manage to develop the changes we need to make before we need them. Economics isn’t magic
But I wanted to point out that there will probably be costs associated with stopping deaths associated with food shortages with adaptation. Are they bigger or smaller than mitigation by reducing CO2 output or geoengineering?
This case hasn’t been made either way to my knowledge and could help allocate resources effectively.
I found this report on adaptation, which suggest adaptation with some forethought will be better than waiting for problems to get worse. Talks about things other than crops too. The headlines
Without adaptation, climate change may depress growth in global agriculture yields up to 30 percent by 2050. The 500 million small farms around the world will be most affected.
The number of people who may lack sufficient water, at least one month per year, will soar from 3.6 billion today to more than 5 billion by 2050.
Rising seas and greater storm surges could force hundreds of millions of people in coastal cities from their homes, with a total cost to coastal urban areas of more than $1 trillion each year by 2050.
Climate change could push more than 100 million people within developing countries below the poverty line by 2030. The costs of climate change on people and the economy are clear. The toll on human life is irrefutable. The question is how will the world respond: Will we delay and pay more or plan ahead and prosper?