Adaptation to Climate Change: Evidence from US Agriculture
利用美国近年气温和降水趋势的差异，识别农业对气候变化的适应程度，发现长期适应仅缓解了极端高温对生产率负面冲击的一半以下甚至为零，预示未来气候变化将导致重大损失。
Understanding the potential impacts of climate change on economic outcomes requires knowing how agents might adapt to a changing climate. We exploit large variation in recent temperature and precipitation trends to identify adaptation to climate change in US agriculture, and use this information to generate new estimates of the potential impact of future climate change on agricultural outcomes. Longer run adaptations appear to have mitigated less than half—and more likely none—of the large negative short-run impacts of extreme heat on productivity. Limited recent adaptation implies substantial losses under future climate change in the absence of countervailing investments.