Estimating Macro-Fiscal Effects of Climate Shocks From Billions of Geospatial Weather Observations
Estimating Macro-Fiscal Effects of Climate Shocks From Billions of Geospatial Weather Observations

Author: Berkay Akyapi

Publisher: International Monetary Fund

Published: 2022-07-29

Total Pages: 73

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A growing literature estimates the macroeconomic effect of weather using variations in annual country-level averages of temperature and precipitation. However, averages may not reveal the effects of extreme events that occur at a higher time frequency or higher spatial resolution. To address this issue, we rely on global daily weather measurements with a 30-km spatial resolution from 1979 to 2019 and construct 164 weather variables and their lags. We select a parsimonious subset of relevant weather variables using an algorithm based on the Least Absolute Shrinkage and Selection Operator. We also expand the literature by analyzing weather impacts on government revenue, expenditure, and debt, in addition to GDP per capita. We find that an increase in the occurrence of high temperatures and droughts reduce GDP, whereas more frequent mild temperatures have a positive impact. The share of GDP variations that is explained by weather as captured by the handful of our selected variables is much higher than what was previously implied by using annual temperature and precipitation averages. We also find evidence of counter-cyclical fiscal policies that mitigate adverse weather shocks, especially excessive or unusually low precipitation episodes.

On the Macro Impact of Extreme Climate Events in Central America: A Higher Frequency Investigation
On the Macro Impact of Extreme Climate Events in Central America: A Higher Frequency Investigation

Author: Hee Soo Kim

Publisher: International Monetary Fund

Published: 2022-12-02

Total Pages: 38

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Central America is one of the world’s most vulnerable regions to extreme climate events. The literature estimates the macroeconomic effects of climate events mainly using annual data, which might underestimate the true effects as these extreme events tend to be short-lived and generate government and family support in response. To overcome this limitation, this paper studies Central American countries’ macroeconomic impact of climatic disasters using high-frequency (monthly) data over the period 2000-2019. We identify extreme climate events by defining dummy variables related to storm and flood events reported in the EM-DAT (Emergency Events Database) and estimate country-specific VAR and panel VAR. The results suggest that a climatic disaster drops monthly economic activity in most countries in the region of around 0.5 to 1 percentage points on impact, with persistent effects on the level of GDP. We show that even as extreme climate events were relatively less severe under our sample period, quantitative effects are similar or larger than previously estimated for the region. In addition, remittances (transfers from family living abroad) increase for most countries in response to a extreme climate event, acting as a shock absorber. The results are robust to controlling for the severity of the climate events, for which we construct a monthly climate index measuring severity of weather indicators by following the spirit of the Actuaries Climate Index (ACI).

Rising Temperature, Nuanced Effects: Evidence from Seasonal and Sectoral Data
Rising Temperature, Nuanced Effects: Evidence from Seasonal and Sectoral Data

Author: Ha Nguyen

Publisher: International Monetary Fund

Published: 2024-09-20

Total Pages: 31

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Using quarterly temperature and sectoral value-added data for a large sample of advanced economies (AEs) and emerging markets and developing economies (EMDEs), this paper uncovers nuanced effects of temperature on economic activity. For EMDEs, hotter spring and summer temperatures reduce growth in real value-added of manufacturing, and most significantly, of agriculture, while a warmer winter boosts it. For advanced countries (AEs), a hotter spring hurts growth in real value-added of all considered sectors: services, manufacturing and agriculture. For both country groups, the negative effect of a hotter spring is larger and more persistent than the positive effect of a warmer winter. Furthermore, the adverse impacts of hotter temperatures in advanced economies have accentuated in recent decades. This result suggests increased vulnerability to rising temperatures.

Beyond the Annual Averages: Impact of Seasonal Temperature on Employment Growth in US Counties
Beyond the Annual Averages: Impact of Seasonal Temperature on Employment Growth in US Counties

Author: Ha Nguyen

Publisher: International Monetary Fund

Published: 2023-06-30

Total Pages: 34

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Using quarterly temperature and employment data between 1990 and 2021, this paper uncovers nuanced evidence on the impact of seasonal temperature within US counties: higher winter temperature increases private sector employment growth while higher summer temperature decreases it. The impacts of higher temperature in mild seasons, fall and spring, are statistically insignificant. Moreover, the negative impact of higher summer temperature persists while the positive impact of higher temperature in the winter is more short-lived. The negative effects of a hotter summer are pervasive and persistent in many sectors: most significantly in “Construction” and “Leisure and Hospitality” but also in “Trade, Transport, and Utilities” and “Financial Activities.” In contrast, the positive effects of a warmer winter are less pervasive. The employment effect of a hotter summer has been more severe in recent decades.

Shedding Light on the Local Impact of Temperature
Shedding Light on the Local Impact of Temperature

Author: Da Hoang

Publisher: International Monetary Fund

Published: 2024-08-16

Total Pages: 30

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We use a new dataset to estimate the impact of temperature on economic activity at a more geographically and temporally disaggregated level than the existing literature. Analyzing 30-kilometer grid cells at a monthly frequency, temperature has a negative, highly statistically significant, and quantitatively large effect on output: a 1 °C increase in monthly temperature is associated with a 0.77 percent reduction in nighttime lights, a proxy for local economic activity. The effects of even a temporary increase in temperature persist for almost one year after the shock. Increases in temperature have an especially large, negative impact on growth in poorer countries, indicating that they are more vulnerable to the impact of climate change.

Togo
Togo

Author: International Monetary Fund. African Dept.

Publisher: International Monetary Fund

Published: 2024-09-23

Total Pages: 103

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This Is Going to Hurt: Weather Anomalies, Supply Chain Pressures and Inflation
This Is Going to Hurt: Weather Anomalies, Supply Chain Pressures and Inflation

Author: Mr. Serhan Cevik

Publisher: International Monetary Fund

Published: 2024-04-05

Total Pages: 31

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As climate change accelerates, the frequency and severity of extreme weather events are expected to worsen and have greater adverse consequences for ecosystems, physical infrastructure, and economic activity across the world. This paper investigates how weather anomalies affect global supply chains and inflation dynamics. Using monthly data for six large and well-diversified economies (China, the Euro area, Japan, Korea, the United Kingdom, and the United States) over the period 1997-2021, we implement a structural vector autoregressive model and document that weather anomalies could disrupt supply chains and subsequently lead to inflationary pressures. Our results—based on high-frequency data and robust to alternative estimation methodologies—show that these effects vary across countries, depending on the severity of weather shocks and vulnerability to supply chain disruptions. The impact of weather shocks on supply chains and inflation dynamics is likely to become more pronounced with accelerating climate change that can have non-linear effects. These findings have important policy implications. Central bankers should consider the impact of weather anomalies on supply chains and inflation dynamics to prevent entrenching second-round effects and de-anchoring of inflation expectations. More directly, however, governments can invest more for climate change adaptation to strengthen critical infrastructure and thereby minimize supply chain disruptions.

Global Economic Impacts of Physical Climate Risks
Global Economic Impacts of Physical Climate Risks

Author: Caterina Lepore

Publisher: International Monetary Fund

Published: 2023-09-08

Total Pages: 125

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This paper evaluates the global economic consequences of physical climate risks under two Shared Socioeconomic Pathways (SSP 1-2.6 and SSP 2-4.5) using firm-level evidence. Firstly, we estimate the historical sectoral productivity changes from chronic climate risks (gradual changes in temperature and precipitation) and extreme climate conditions (representative of heatwaves, coldwaves, droughts, and floods). Secondly, we produce forward-looking sectoral productivity changes for a global multisectoral sample of firms. For floods, these estimates account for the persistent productivity changes from the damage to firms’ physical capital. Thirdly, we assess the macroeconomic impact of these shocks within the global, multisectoral, intertemporal general equilibrium model: G-Cubed. The results indicate that, in the absence of additional adaptation relative to that already achieved by 2020, all the economies would experience substantial losses under the two climate scenarios and the losses would increase with global warming. The results can be useful for policymakers and practitioners interested in conducting climate risk analysis.

Sectoral Impact and Propagation of Weather Shocks
Sectoral Impact and Propagation of Weather Shocks

Author: Guglielmo Zappalà

Publisher: International Monetary Fund

Published: 2023-03-10

Total Pages: 85

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Local weather shocks have been shown to affect local economic output, however, little is known about their propagation through production networks. Using a six-sector global dataset over the past fifty years, this paper examines the effect of weather fluctuations and extreme weather events on sectoral economic production and the transmission of weather shocks across sectors, countries and over time. I document that agriculture is the most harmed sector by heat shocks, droughts and cyclones. Using input-output interlinkages, I find that sectors at later stages of the supply chain suffer from substantial and persistent losses over time due to domestic and foreign heat shocks in other sectors. A counterfactual analysis of the average annual output loss accounting for heat shocks across trade partners shows a substantial underestimation of the economic cost of temperature increases since 2000.

Assessing Recent Climate Policy Initiatives in the
Assessing Recent Climate Policy Initiatives in the

Author: Chen Chen

Publisher: International Monetary Fund

Published: 2023-03-13

Total Pages: 43

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The Netherlands has committed to the EU’s ambitious targets for cutting greenhouse gas emissions by 2030 and emissions neutrality in 2050 but at the same time is also vulnerable to sea-level rise and flood risks. This paper reviews recent mitigation policy initiatives in the Netherlands, including carbon levies for the industry and power sectors, energy and car tax reforms, and air passenger taxes, and recommends some modifications to these initiatives. The paper also provides assessments of hazards and macroeconomic risks from weather shocks and climate change and assesses the adaption plan against key principles on mainstream climate change into macro-fiscal planning.