TL;DR
Climate hazards will increase in frequency and severity as we are already locked into a certain amount of global warming (how much the world warms, is up to us). The financial impacts of these hazards are vast, so measuring and evaluating climate risk is becoming an essential business practice. To evaluate risk from climate change, we need to look at the full picture: hazards, exposure (physical presence), and vulnerability (the likelihood of harm).
- TL;DR
- What is Climate Risk?
- IPCC definitions of the terms
- Types of climate risk
- Physical risk
- Transition risk
- Impacts of climate risk
- Assessing risk
- Hazards
- Vulnerability and Exposure
- Task Force on Climate-Related Financial Disclosures (TCFD)
- The TCFD in use
- On the plus side...
- Resources
What is Climate Risk?
Climate risk refers to the interaction of climate-related hazards with the vulnerability and exposure of human and natural systems. So it is a combination of the likelihood of harm, the potential of an event to occur, and physical presence.
The components of risk are driven by both climate and socioeconomic aspects.
IPCC definitions of the terms
Types of climate risk
Physical risk
- Local changes directly related to climate effects
- Will increase in frequency and magnitude under a "business as usual scenario"
- Can be acute (i.e. extreme weather events) or chronic:
- Acute: Higher frequency and severity Examples: floods, droughts, heatwaves, cold waves, wildfires, hurricanes, tornados
- Chronic: Due to sustained shifts over time Examples: temperature, precipitation, sea-level rise
Transition risk
- Arise from actions taken to manage climate change in terms of policy, liability, and technology
- Includes the risk of stranded assets: carbon-intensive assets (physical and financial) that become unusable or reduced in value
- Will increase as the world shifts to address climate change
Impacts of climate risk
Climate change poses significant financial challenges, and the risk-return profile of companies exposed to climate-related risks may change significantly as more companies are affected by climate change, climate policy, and new technologies.
Climate change is poised to reduce global GDP by 11 to 14% by 2050 (or up to $23 trillion according to The New York Times) and in the EU alone, climate-related financial losses are already averaging over ā¬12 billion per year.
It is important to remember that climate hazards alone do not translate into impacts. The elements of exposure and vulnerability are equally as important in determining the potential impacts of risk.
Potential Impact | Example |
---|---|
Sea level rise causes flooding of beachfront properties in Florida. | |
Labor loss in East Africa from increased malaria exposure. | |
Drought leads to failure of wheat crops in Canada. | |
More unpredictable tornadoes in Kansas leads to an increase in the cost of homeowners insurance and a decrease in the number of people who can afford to purchase or maintain coverage. | |
The switch to solar energy in India leads to abandoned coal power plants. |
Assessing risk
When assessing risk, it's important to look at all aspects, remember:
Climate risk = hazards + vulnerability + exposure
Hazards
Traditional climate models are not fit for purpose when it comes to predicting hazards with accuracy and precision because that is not what they were designed to do. These models were designed to understand global climate change rather than to make precise regional predictions.
Researchers are using machine learning to correct conventional climate model outputs. For this method, machine learning and AI models can be trained by comparing hindcasts (predictions of past conditions) with recorded observations.
Vulnerability and Exposure
The ability to adapt is a key component of vulnerability, and so the world's poorest countries are likely to be at more exposure risk than those with greater financial security.
Once we understand what and where the hazards are, we need to look at vulnerability and exposure to fully understand climate risk. This is where geospatial data around assets and supply chains become important.
Task Force on Climate-Related Financial Disclosures (TCFD)
Created at COP21 in 2015 by The Financial Stability Board to "develop recommendations for more effective climate-related disclosures." The TCFD outlines what to disclose against (rather than how to disclose) and consists of three parts:
- Core recommendations (around four themes with a total of 11 recommended disclosures)
- Principles for effective disclosure
- Disclosures should representĀ relevantĀ information
- Disclosures should beĀ specificĀ andĀ complete
- Disclosures should beĀ clear,Ā balanced, andĀ understandable
- Disclosures should beĀ consistentĀ over time
- Disclosures should beĀ comparableĀ among companies within a sector, industry, or portfolio
- Disclosures should beĀ reliable
- Disclosures should be provided on aĀ timelyĀ basis
- Scenario analysis: hypothetical situations that consider a range of possible conditions
The TCFD in use
There are 2700 corporations, banks, national governments and government ministries that have officially supported the TCFH. Signing on as a supporter itself does not have any requirements or mean the organization is using the TCFD, rather it is a statement that the recommendations "provide a useful framework to increase transparency on climate-related risks and opportunities within financial markets." A full list of supporters is available on the TCFD website.
It should also be noted that supporting, or even using, the TCFD does not imply a commitment to reducing carbon emissions or changing business practices. The TCFD is purely a framework for disclosing risk, not fighting climate change.
Countries with mandatory TCFD reporting
Countries with regulations in progress
- United Kingdom: rolling out April 2022
- Switzerland: expected by 2024
- Hong Kong: expected by 2025
- United States: TCFD is "likely" to be the basis for disclosure
On the plus side...
There are benefits to understanding and disclosing climate risk, including:
- The ability to make more informed decisions and strategic planning
- Attracting more investors and getting better ratings for bond issuance and bank loans
- Improved social reputation
Resources
- Business risk and the emergence of climate analytics (Fiedler et al., 2021)
- Climate change risk assessment 2021 (Chatham House, 2021)
- Opportunities and challenges for machine learning in weather and climate modelling: hard, medium and soft AI. (Chantry et al., 2021)
- Towards implementing artificial intelligence post-processing in weather and climate: proposed actions from the Oxford 2019 workshop. (Haupt et al., 2021)
- Climate services for managing societal risks and opportunities (Hewitt & Stone, 2021)
- Agriculture's contribution to climate change and role in mitigation is distinct from predominantly fossil CO2-emitting sectors. (Lynch et al., 2021)
- US may join Europe in mandating climate risk disclosures. (Financial Times, 2021)
- Shareholders Are Pressing for Climate Risk Disclosures. Thatās Good for Everyone. (Harvard Business Review, 2021)
- What is the TCFD? Task Force on Climate-Related Financial Disclosures (worldfavor, 2021)
- Climate policy, stranded assets, and investorsā expectations (Sen et al. 2020)
- Climate risk report 2020 (ING)
- Climate change and P&C insurance: The threat and opportunity. (McKinsey & Company, 2020)
- Pushing the Computational Limits of Climate Simulation. (Stanley, 2020)
- Climate risk and response: Physical hazards and socioeconomic impacts. (McKinsey Global Institute, 2020)
- Climate change managing a new financial risk. (Oliver Wyman for the IACPM, 2019)
- The scientific challenge of understanding and estimating climate change. (Palmer & Stevens, 2019)
- What are stranded assets? (Grantham Research Institute on Climate Change and the Environment, 2018)
- Use of Climate Predictions to Manage Risks. (World Meteorological Organization, 2016)
- Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part A: Global and Sectoral Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC, 2014)
- What is SFDR, EUās sustainable finance disclosure regulation? (worldfavor)
- Climate-related Physical Risks (Resource Watch)
- Shades of climate risk. Categorizing climate risk for investors. (CICERO)
Last updated: Aug 2022