Dust and Death: Evidence from the West African Harmattan
利用西非12个低收入国家20年的数据，研究发现哈马丹风带来的沙尘增加了婴幼儿死亡率，但健康投资和适应行为随时间降低了影响，其中公共卫生改善作用更大。
Abstract Using two decades of data from 12 low-income countries in West Africa, we show that dust carried by harmattan trade winds increases infant and child mortality. Health investments respond to dust exposure, consistent with compensating behaviours. Despite these efforts, surviving children still exhibit negative health impacts. Our data allow us to investigate differential impacts over time and across countries. We find declining impacts over time, suggesting adaptation. Using national-level measures of macroeconomic conditions and health resources, we find suggestive evidence that both economic development and public health improvements have contributed to this adaptation, with health improvements playing a larger role.