University of Cambridge > Talks.cam > Economics & Policy Seminars, CJBS > LONG TERM MACROECONOMIC EFFECTS OF CLIMATE CHANGE: A CROSS COUNTRY ANALYSIS

LONG TERM MACROECONOMIC EFFECTS OF CLIMATE CHANGE: A CROSS COUNTRY ANALYSIS

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A light lunch will be available from 12:00 in room W4.05

We study the long term impact of climate change on economic activity across countries, using a stochastic growth model where labour productivity is affected by country specific climate variables. defined as deviations of temperature and precipitation from their historical norms. Using a panel data set of 174 countries over the years 1960 to 2014, we find that per capita real output growth is adversely affected by persistent changes in the temperature above or below its historical norm, but we do not obtain any statistically significant effects for changes in precipitation. Our counterfactual analysis suggests that a persistent increase in average global temperature by 0.04 degrees centigrade per year, in the absence of mitigation policies, reduces world real GDP per capita by more than 7 percent by 2100. On the other hand, abiding by the Paris Agreement, thereby limiting the temperature increase to 0.01 degrees centigrade per annum, reduces the loss substantially to about 1 percent. These effects vary significantly across countries depending on the pace of temperature increases and variability of climate conditions. We also provide supplementary evidence using data on a sample of 48 US states between 1963 and 2016, and show that climate change has a long lasting adverse impact on real output in various states and economic sectors, and on labour productivity and employment.

This talk is part of the Economics & Policy Seminars, CJBS series.

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