海外之声 | 金融机构在应对气候变化挑战中的作用
导读
气候变化以及由此引发的自然灾害已经给全球带来了巨大的经济损失,并且在未来仍将对全球经济产生持续深远的影响。当然,这种由气候变化带来的经济影响最终将取决于自然灾害发生的频率和严重性,以及世界各国向绿色经济发展转型的速度。另外,金融机构在应对气候变化,促进低碳经济发展模式转变时同样可以发挥作用。建立一个强大的风险管理和具有前瞻性的计划可以帮助金融机构在应对气候变化风险时更具有韧性,并且更能帮助经济向可持续发展方向转变。总之,气候变化给金融机构带来了风险和机遇。
气候变化可以通过这两个渠道影响金融体系,包括“物理风险”和“过渡风险”。“物理风险”是指由于天气事件或其他气候变化的频率或严重性增加而造成的损害;而由于政策,技术或消费者行为的变化导致在向低碳经济转变过程中产生的风险,称为“过渡风险”。金融机构需要定义和开发新的风险管理框架,将这些与气候相关的金融风险纳入多层次的战略决策中。
金融机构在抵御与气候相关的风险时面临着诸多挑战,例如缺乏相关历史数据、对风险估计时面临较大不确定性。金融机构正在积极改善数据,制定统一的数据披露标准和度量标准。与此同时,为了应对有关未来气候变化的不确定性,金融机构也在积极使用新的工具,例如气候情景分析可以很好确定金融公司面临的与气候相关的风险,这相对于传统的压力测试是一次很好的探索。
在认识到风险与挑战的同时,美联储正在积极采取行动。美联储已宣布成立监督气候委员会(SCC),增强美联储确定和评估气候变化带来的金融风险的能力。气候变化是一项全球性挑战,因此美联储在国内和国际上同时开展合作,美联储将担任巴塞尔银行监管委员会气候金融风险工作组(TFCR)的联席主席,未来将把更多注意力放在缓解巴塞尔框架中可能存在缺口的与气候相关的金融风险上。在应对与气候变化有关的众多复杂性和挑战时,美联储将通过公开对话、信息共享和透明应对这些挑战,确保金融体系能够抵御气候变化带来的风险,支持向绿色经济发展模式的转变。
作者 | 莱尔·布雷纳德,美国联邦储备委员会成员
英文原文如下:
The Role of Financial Institutions in Tackling the Challenges of Climate Change
Lael Brainard, Member of the Board of Governors of the Federal Reserve System, at the"2021 IIF U.S. Climate Finance Summit: Financing a Pro Growth Pro Markets Transition to a Sustainable, Low-Carbon Economy", hosted by the Institute of International Finance, Washington DC, 18 February 2021.
I want to thank the Institute of International Finance for inviting me to join this discussion. Let me start by noting that these are my own views and do not necessarily reflect those of the Federal Reserve Board or the Federal Open Market Committee.[i]
Climate change is already imposing substantial economic costs and is projected to have a profound effect on the economy at home and abroad.[ii] Future financial and economic impacts will depend on the frequency and severity of climate-related event sand on the nature and the speed at which countries around the world transition to agree ner economy.[iii]
Climate change and the transition to a low-carbon economy create both risks and opportunities for the financial sector. Financial institutions that do not put in place frameworks to measure, monitor, and manage climate-related risks could face outsized losses on climate-sensitive assets caused by environmental shifts, by a disorderly transition to a low-carbon economy, or by a combination of both. Conversely, robust risk management, scenario analysis, and forward planning can help ensure financial institutions are resilient to climate-related risks and well-positioned to support the transition to a more sustainable economy.Making Progress on Climate Change
Uncertainty, Data, and Disclosure
While the scientific evidence for climate change is unequivocal, estimates of the magnitude of climate-related financial risks are highly uncertain.[xi] This uncertainty stems from a number of factors. Predicting the timing and magnitude of physical risk drivers such as hurricanes, wildfires, or droughts is inherently complex. The predicted path of climate change may be nonlinear and may include tipping points or critical thresholds that, when exceeded, can lead to a significant change in the state of the climate system.[xii] There is also transition-related uncertainty associated with policy developments, technological change, and shifts in behavior and preferences. Moreover, the economic and financial market impacts of climate-related risks vary across geographies, sectors, and jurisdictions and depend importantly on the existence of feedback loops. Finally, the long time horizon associated with climate change, the lack of historical data, the potential for sudden shifts in asset valuations, and the paucity of information on the climate-sensitivity of exposures complicate the translation of climate-related risks into measures of credit, market, liquidity, reputational, and operational risks.[xiii]
Improved data, disclosures, and modelling techniques will be crucial to reducing uncertainty around the potential magnitude of risks related to climate change. Financial institutions are collecting data and experimenting with scenario analysis and other techniques to better understand the potential impact of climate-related risks to their balance sheets and business models.[xiv] Similarly, the Federal Reserve is investing in data and empirical work to analyze the transmission of climate-related risks to the economy and developing methodologies to measure these risks, as are other central banks.[xv]
Financial institutions note that “the development of uniform data standards and metrics for disclosures will be critical to adequately identify and compare climate risks across businesses and sectors.”[xvi] That underscores the importance of efforts such as the industry-led Task Force on Climate-related Financial Disclosures (TCFD) that work toward consistent climate-related financial disclosures to improve transparency, reduce uncertainty, and help market participants appropriately assess and price climate-related risks and opportunities.[xvii] Current voluntary disclosure practices are an important first step, but they are prone to variable quality, incompleteness, and a lack of actionable data.[xviii] Ultimately, moving toward standardized, reliable, and mandatory disclosures could provide better access to the data required to appropriately manage risks.
Even with improved data and disclosures, uncertainty about the future climate trajectory will remain.[xix] This residual uncertainty should not stand in the way of making prudent investments in risk-management practices in the near term to strengthen the financial sector against climate-related risks. Instead, supervisory approaches should encourage institutions to take the necessary risk-management steps to ensure their business models and strategies are robust to the wide range of potential outcomes that may evolve over time—including the possible use of new tools where appropriate.Tools
Climate-related risks have unique characteristics that may warrant consideration of new approaches to measuring and managing risk, and new or enhanced supervisory tools. Determining whether the existing supervisory tool kit is adequate or if changes are needed will require careful thought and rigorous analysis of the unique aspects of climate risks, including their long-time horizon, variability across geographies and sectors, and data challenges. As always, supervisory approaches will be informed by analytica lassessments and transparent discussions.
Supervised institutions are beginning to adapt their governance, risk-identification, and risk-management processes, and business models to reflect climate-related risks. It is clear that physical and transition risks could have significantly different impacts on institutions of varying sizes, complexities, and business models, andwith exposures to different geographies. Banks have told us that, “prospective guidance and regulation should be (1) designed to assist institutions of all types and sizes to measure, monitor, and disclose the associated financial risks [from climate change]; and(2) tailored to the complexity of specific types of institutions.”[xx]
In light of the high uncertainty inherent in estimating climate risks, scenario analysis may be a helpful tool to assess the micro prudential and macro prudential implications of climate-related risks under a wide range of assumptions. Climate scenario analysis identifies climate-related physical and transition risk factors facing financial firms, formulates appropriate stresses of those risk factors under different scenarios, and measures their effects on individual firms and the financial system as a whole.
To be clear, scenario analysis is distinct from our traditional regulatory stress testsat banks. Scenario analysis is an exploratory exercise that allows banks and supervisors to assess business model resilience to a range of long-run scenarios. It seeks to understand the effects of climate-related risks on a range of financial markets and institutions, as well as the potentially complex dynamics among them. By contrast, traditional stress tests are a regulatory exercise to assess the capital adequacy of banks tospecific macroeconomic scenarios and financial market shocks over the short-run. Weare closely following the climate scenarios being developed by other central banks and supervisory authorities and engaging with those institutions so we can learn from their experiences. It will be important to think carefully about the potential for scenario analysis to support micro prudential and macro prudential objectives and to consider how stress testing and scenario analysis may complement one another.Efficiency and Robustness
There is unlikely to be a single “right” approach to a challenge as complex as the financial impact of climate change. Micro prudential supervisors and regulators generally aim to promote the goals of a safe and sound banking system in the way that is as efficient and effective as possible.[xxi] Developing an effective framework is likely to be a complex undertaking in considering the linkages between climate change, the economy and financial markets, and ultimately the risks faced by individual banks.
For instance, consider model development and scenario analysis. At first glance, it might appear most efficient and least burdensome to apply a prescriptive approach that specifies the appropriate data and a scenario and leverages a particular credit model to produce a standardized output across firms. Although there are benefits to standardization in some areas such as data and taxonomies, it is not clear a highly prescriptive approach would be the most effective way to ensure financial institutions are well-prepared for the range of possible impacts of climate change, even if the execution burden is low. Ultimately, the outcomes are likely to be more robust if we innovate and experiment, and leverage a range of complementary approaches being developed in both the private and the public sectors.[xxii] In considering the trade-off here, we should strive for an appropriate balance that allows for innovation and learning across the public and private sectors, iterating in the most effective way possible.The Path Ahead
While recognizing the challenges, the Federal Reserve is making strides in better understanding climate-related risks and determining how best to incorporate them into our supervisory framework. The Federal Reserve announced last month the creation of a Supervision Climate Committee (SCC).[xxiii] It will strengthen the Federal Reserve’s capacity to identify and assess financial risks from climate change. The SCC will work to develop an appropriate program to ensure the resilience of supervised firms to climate-related financial risks. It will leverage expertise from across the Federal Reserve System to develop a robust, tailored program that reflects risk differences across types of firm sand geographies.
The SCC is focusing on engagement with the private and official sectors to understand the potential impact of climate-related risks. It is engaging with a diverse group of supervised institutions and industry groups to learn how banks of different sizes, with different business models and different geographic exposures are considering both climate risks and opportunities and what they are doing to prepare for the transition to a low-carbon economy. We are learning a great deal from these discussions, and we look forward to continued engagement with the industry on this topic.
The micro prudential work of the SCC is one part of our efforts to take into account climate-related risks in carrying out the responsibilities Congress has assigned to us. The SCC will work with staff in our financial stability, community development, international coordination, and research and data areas to build a coordinated approach to integrating climate-related risks where they affect our responsibilities.
The Federal Reserve is engaging with colleagues from other regulatory agencies, central banks, and standard-setting bodies. At home, this includes exploring with members of the U.S. Global Change Research Program the ways additional scientific data, models, and other information would be used to expand our analysis of weather-related disasters and climate-related risks.
Climate change is a global challenge, and we recognize the benefit of collaboration across the official sector, while also taking into account important differences across jurisdictions. The Federal Reserve is co-chairing the Basel Committee on Banking Supervision’s Task Force on Climate-Related Financial Risks (TFCR).[xxiv]Having completed a stock-take of members’ existing regulatory and supervisory initiatives on climate-related financial risks, the TFCR is now focused on finalizing by midyear a report exploring the transmission channels of climate risks to the banking system and a report that describes the methodologies used by banks and supervisors to measure these risks. Next, the TFCR will turn its attention to developing supervisory practices to mitigate climate-related financial risks where there are potential gaps in the Basel framework. Already, many banks are incorporating supervisory expectations with regard to management of climate-related risks in foreign jurisdictions, for instance from the European Central Bank and the UK Prudential Regulatory Authority.[xxv] The TCFR’s work will be helpful in strengthening supervisory collaboration across jurisdictions, which is important to banks that are internationally active.
We also participate in the Financial Stability Board’s (FSB) work on climate change. Building on previous reports on climate-related risk-transmission channels in the financial system, with a particular focus on amplification mechanisms and cross-border effects, the FSB is now assessing the availability of data through which climate-related risks to financial stability could be monitored, as well as any data gaps. [xxvi]In addition, the FSB is exploring ways to promote globally comparable, high-quality and auditable standards of disclosure based on the recommendations in the TCFD.
The Federal Reserve recently became a full member of the Network for Greening the Financial System (NGFS), a network of more than 80 central banks and supervisory authorities from around the world that focuses on sharing research and identifying best practices to ensure the financial system is resilient to climate-related risks. Through the NGFS, we are engaged in work on the micro prudential and macro financial impacts of climate change, trends in green finance, data gaps, and research.
In wrestling with the many complexities and challenges related to climate change, there are likely to be significant opportunities for collaboration with the private and official sectors. These are not easy problems, and they will not have easy solutions. We will undoubtedly reach better outcomes if we tackle these challenges through open dialogue, information sharing, and transparency. Together, we can help ensure the financial system is resilient to the risks that arise from climate change and well-positioned to support the transition to a greener economy.Reference
[ii] U.S. Global Change Research Program, Impacts, Risks, and Adaptation in the United States: Fourth National Climate Assessment, Volume II, D.R. Reidmiller, C.W. Avery, D.R. Easterling, K.E. Kunkel, K.L.M. Lewis, T.K. Maycock, and B.C. Stewart (eds.) (Washington: USGCRP, 2018), https://nca2018.globalchange.gov/.[iii] Intergovernmental Panel on Climate Change (IPCC), “Summary for Policymakers” in: Global Warming of 1.5°C: An IPCC Special Report, V. Masson-Delmotte, P. Zhai, H.O. Pörtner, D. Roberts, J. Skea, P.R. Shukla, A. Pirani, W. Moufouma-Okia, C. Péan, R. Pidcock, S. Connors, J.B.R. Matthews, Y. Chen, X. Zhou, M.I. Gomis, E. Lonnoy, T. Maycock, M. Tignor, T. Waterfield (eds.), 2018, https://www.ipcc.ch/2018/10/08/summary-for-policymakers-of-ipcc-special-report-on-global-warming-of-1-5c-approved-by-governments/; on the impacts of global warming of 1.5°C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty.[iv] See World Meteorological Organization (WMO) Task Team, Global Warming and Hurricanes: An Overview of Current Research Results (Princeton: Geophysical Fluid Dynamics Laboratory, 2020), https://www.gfdl.noaa.gov/global-warming-and-hurricanes/; and The Intergovernmental Panel on Climate Change, Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation (Geneva: IPCC, 2012), 44–8, https://www.ipcc.ch/report/managing-the-risks-of-extreme-events-and-disasters-to-advance-climate-change-adaptation/changes-in-climate-extremes-and-their-impacts-on-the-natural-physical-environment/.[v] Munich Re, “Risks Posed by Natural Disasters,” 2020, https://www.munichre.com/en/risks/natural-disasters-losses-are-trending-upwards.html#-1624621007.[vi] See, for example, Jean-Noel Barrot and Julien Sauvagnat, “Input Specificity and the Propagation of Idiosyncratic Shocks in Production Networks,” The Quarterly Journal of Economics 131 (3): 1,543–92.[vii] Also Francesc Ortega and Süleyman Taspinar, “Rising Sea Levels and Sinking Property Values: The Effects of Hurricane Sandy on New York’s Housing Market.” Journal of Urban Economics, 2018, 106: 81–100.[viii] See, for example, COP26 Private Finance Hub, “Building a Private Financial System for Net Zero,” 2020.Also, Taskforce on Scaling Voluntary Carbon Markets, “Final Report,” January 2021,https://www.iif.com/Portals/1/Files/TSVCM_Report.pdf; Climate Policy Initiative, “Global Landscape ofClimate Finance 2019,” November 7, 2019, https://www.climatepolicyinitiative.org/publication/global-landscape-of-climate-finance-2019/.[ix] Federal Advisory Council (FAC) Record of Meeting, (February 4, 2021), https://www.federalreserve.gov/aboutthefed/files/fac-20210204.pdf.[x] Basel Committee on Banking Supervision, Climate-Related Financial Risks: A Survey on Current Initiatives, April 2020, https://www.bis.org/bcbs/publ/d502.pdf.[xi] USGCRP, “Climate Science Special Report: Fourth National Climate Report,” U.S. Global Change Research Program.[xii] IPCC, Impacts of 1.5⁰C Global Warming on Natural and Human Systems, 2018, pp. 262.[xiii] Glenn D. Rudebusch, “Climate Change Is a Source of Financial Risk,” Federal Reserve Bank of SanFrancisco Economic Letter, February 8, 2021, https://www.frbsf.org/economic-research/publications/economic-letter/2021/february/climate-change-is-source-of-financial-risk/.[xiv] See, for example, United Nations Environment Programme–Finance Initiative (UNEP-FI), “Extending Our Horizons: Assessing Credit Risk and Opportunity in a Changing Climate” (Geneva: UNEP-FI, April 2018), https://www.unepfi.org/news/themes/climate-change/extending-our-horizons/; UNEP-FI, “Beyond the Horizon: New Tools and Frameworks for Transition Risk Assessments from UNEP FI’s TCFD Banking Programme,” (Geneva: UNEP-FI, October 2020), https://www.unepfi.org/publications/banking- publications/beyond-the-horizon/.[xv] See, for example, Network for Greening the Financial System (NGFS), “Guide to Climate Scenario Analysis for Central Banks and Supervisors,” June 2020,https://www.ngfs.net/sites/default/files/medias/documents/ngfs_guide_scenario_analysis_final.pdf.[xvi] Federal Advisory Council (FAC) Record of Meeting, (February 4, 2021), https://www.federalreserve.gov/aboutthefed/files/fac-20210204.pdf.[xvii] Task Force on Climate-related Financial Disclosures, Final Report: Recommendations of the Task Force on Climate-related Financial Disclosures” (New York: TCFD, June 2017), https://assets.bbhub.io/company/sites/60/2020/10/FINAL-2017-TCFD-Report-11052018.pdf.[xviii] See, for example, Pedro Faria, Tony Rooke, and Esben Madsen, Pitfalls of Climate-Related Disclosures, Climate Disclosure Project, https://b8f65cb373b1b7b15feb-c70d8ead6ced550b4d987d7c03fcdd1d.ssl.cf3.rackcdn.com/comfy/cms/files/files/000/000/784/original/Pitfalls-of-Climate-Related-Disclosure.pdf.[xix] Patrick Bolton, Morgan Després, Luiz Awazu Pereira da Silva, Frédéric Samama, and Romain Svartzman, The Green Swan: Central Banking and Financial Stability in the Age of Climate Change (Basel: Bank for International Settlements, January 20, 2020), https://www.bis.org/publ/othp31.htm.[xx] Federal Advisory Council (FAC) Record of Meeting, (February 4, 2021), https://www.federalreserve.gov/aboutthefed/files/fac-20210204.pdf.[xxi] Kevin J. Stiroh, “Policy Efficiency in Supervision,” remarks at Bank Regulation, Lending, and Growth Conference, Bank Policy Institute and Columbia University’s School of International and Public Affairs, March 1, 2019, https://www.newyorkfed.org/newsevents/speeches/2019/sti190301.[xxii] In our supervision of banks’ capital stress testing (Comprehensive Capital Analysis and Review, or, CCAR), we learned it was important to avoid “model monoculture” that would expose all firms to the same model risk and uncertainty and could be vulnerable to a single, common failure. Instead, CCAR leverages internal bank models that capture banks’ idiosyncratic risks and allows for diversity and innovation of models and risk management tools across the banking sector. See Ben Bernanke, “Stress Testing Banks—What Have We Learned?” speech at “Maintaining Financial Stability: Holding a Tiger by the Tail” financial markets conference sponsored by the Federal Reserve Bank of Atlanta, Stone Mountain, Georgia, April 8, 2013, https://www.federalreserve.gov/newsevents/speech/bernanke20130408a.htm.[xxiii] Federal Reserve Bank of New York, “Kevin Stiroh to Step Down as Head of New York Fed Supervision to Assume New System Leadership Role at Board of Governors on Climate,” news release, January 25, 2021, https://www.newyorkfed.org/newsevents/news/aboutthefed/2021/20210125.[xxiv] Kevin J. Stiroh, “The Basel Committee’s Initiatives on Climate-Related Financial Risks,” remarks at the 2020 IIF Annual Membership Meeting,” October 14, 2020, https://www.bis.org/speeches/sp201014.htm.[xxv] European Central Bank, Guide on Climate-Related and Environmental Risks: Supervisory Expectations Relating to Risk Management and Disclosure, (Frankfurt: ECB, November 2020), https://www.bankingsupervision.europa.eu/ecb/pub/pdf/ssm.202011finalguideonclimate-relatedandenvironmentalrisks~58213f6564.en.pdf; and Bank of England Prudential Regulatory Authority,“Managing Climate-Related Financial Risk—Thematic Feedback from the PRA’s Review of Firms’ Supervisory Statement 3/19 (SS3/19) Plans and Clarification of Expectations,” letter, July 1, 2020, https://www.bankofengland.co.uk/-/media/boe/files/prudential-regulation/letter/2020/managing-the-financial-risks-from-climate-change.pdf?la=en&hash=A6B4DD1BE45B2762900F54B2F5BF2F99FA448424.[xxvi] Financial Stability Board, The Implications of Climate Change for Financial Stability, November 23, https://www.fsb.org/wp-content/uploads/P231120.pdf.
编译 艾建伟
编辑 查王皓天
来源 BIS
责编 李锦璇、蒋旭
监制 朱霜霜
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