This paper measures the marginal impact of climate variability on Vietnamese households’ income. We combine survey data from the Viet Nam Household Living Standard Survey (VHLSS) database with daily climate data from the Climate Prediction Center to estimate the response function of Vietnamese households’ revenues to past climate variability. We focus on the non-linearity of the response and notably on the impacts of extremely warm days. We find that on average an additional day above 33°C is associated with a decrease of the yearly income by 1.3%. This strong effect is not specific to the agricultural sector. It is highest for the lowest deciles of the revenue distribution. Using projection scenarios under the Representation Concentration Pathways (RCP) 8.5 and 4.5, we find an estimated impact of global warming of up to 100% of households’ revenues in 2090s in some regions (Northern region and the Red River Delta area) under RCP8.5. These strong negative impacts are also likely to be specifically concentrated on poor households and to increase revenue inequalities.
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