The Value of Better Weather Information to the Raisin Industry
更好天气信息对葡萄干产业的价值AI 解读 ↓
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更好天气信息对葡萄干产业的价值
- 研究问题
- 更准确的降雨预报如何影响加州葡萄干种植者及整个产业的收益？摘要关注单个生产者的信息价值能否直接加总为产业收益。
- 方法与思路
- 作者结合决策理论、供需曲线拟合与局部均衡分析，先研究单个种植者，再扩展到整个产业及土地、劳动的其他用途。
- 材料陈述的贡献
- 摘要称，单个种植者可从提前预报中获益，但产业需求缺乏弹性可能使短期利润下降，揭示信息价值加总中的合成谬误。
- 阅读关注点
- 应核对天气预报如何进入生产决策、供需弹性的估计依据，以及资源转用、短期约束和监管如何改变产业层面的收益评价。
- 阅读边界
- 仅依据所给 OpenAlex 摘要；无法核验收益计算、需求拟合及资源转用假设，也不能将摘要中的短期损失推广到长期或其他产业。
原文摘要
This report utilizes decision theory to investigate the possible benefits of better weather information to California raisin growers. A supply curve is fitted to the raisin industry and used to evaluate the importance of various factors: weather is of overwhelming importance. Subsequent analysis focuses on the most vulnerable aspect of raisin production: its dependence on early forecasts of rain in September and October when the grapes are being dried and in danger of being damaged by rain. Section 1, in the tradition of micro-economic, partial equilibrium analysis, is concerned with the value of weather information to a single grower. Only the grower focused upon is assumed to receive the better information. This assumption implies there is high value for forecasting rain three weeks in advance. A figure of 90.95 per acre is the value of perfect three week forecasts. Were this value to be realized for each bearing acre in 1960, the total value of better weather information to the raisin industry would be 20,300,000. But merely summing across firms to get industry totals may lead to a fallacy of composition: the analysis must be extended to a wider partial equilibrium framework. Section 2 examines the value of better weather information to the raisin industry as a whole. Since costs are not greatly affected by improved weather information, profit differences are closely approximated by changes in revenue. The elasticity of demand for raisins is calculated from a demand curve fitted to industry data. The inelasticity of demand causes profit to fall under the impact of better information, at least in the short run. The scope of the analysis is then extended to other industries. Using this wider viewpoint, the Conclusion examines the possibility of a simple tax that would reallocate land and labor. The presence of released resources seems to imply a clear gain for better information. However, the basis of such a gain is positive value for these resources in other uses. But the short run inelasticity of other possible products makes it clear that, at least in the short run, better weather information results in net loss. However, some relief is offered through the possibility of regulation. An Appendix examines the question of the value of inaccurate forecasts.