Det kan ju om inte annat ge en fingervisning om vilket matriel man bör ha hemma eller skaffa illa kvickt om vi får höra att Yellowstone nyss haft ett utbrott.
Man kan också få en fingervisning om hur nöd-växthus kan designas, och läsa mellan raderna att vi är helt körda på dessa breddgrader i ett sånt scenarie ifall vi inte kan hålla kärnkraften igång under tiden. Dessa nödväxthus är tänkta att användas på syderligare breddgrader.
edit: Verkar fortfarande nte gå att ladda upp PDF:er. Jag laddade upp den till IPFS: Scaling_of_Greenhouse_Crop_Production_in_Low_Sunlight_Scenarios.pdf
Abstract
Purpose
During a global catastrophe such as a nuclear winter, in which sunlight and
temperatures are reduced across every latitude, to maintain global agricultural output it
is necessary to grow some crops under structures. This study designs a method for
scaling up crop production in low-tech greenhouses to contribute to global food
sustainability during global catastrophic conditions. Constructing low-tech greenhouses
would obviate growing crops using more expensive and energy intensive artificial light.
Methods
A nuclear winter climate model is used to determine conditions for which greenhouses
would need to compensate. The greenhouse structures are designed to utilize global
markets of timber, polymer film, construction aggregates, and steel nails.
Results
The limiting market that determines the growth rate of the greenhouses is the rate at
which polymer film and sheet are currently extruded. Conditions under low-tech
greenhouses in the tropics would feasibly accommodate the production of nearly all
crops. Some supplemental lighting would be required for long day crops.
Conclusions
The analysis shows that the added cost of low-tech greenhouses is about two orders of
magnitude lower than the added cost of artificial light growth. The retail cost of food
from these low-tech greenhouses will be ~2.30 USD/kg dry food higher than current
costs; for instance, a 160% retail cost increase for rice. According to the proposed scaling
method, the greenhouses will provide 36% of food requirements for everyone by the end
of the first year, and feed everyone after 30 months.
