Course outline
Module 1
Module 1: What the IPCC Is and How It Works
What the IPCC Is and How It Works
Knowledge check
Q1. What does IPCC stand for?
- A. International Panel on Climate Change
- B. Intergovernmental Panel on Climate Change ✓
- C. International Program on Climate Consensus
- D. Intergovernmental Program on Carbon Cycles
Why: The IPCC is the Intergovernmental Panel on Climate Change, a body established under the United Nations to assess climate science. Its 'intergovernmental' nature means member governments participate in and approve its work.
Q2. In what year was the IPCC established?
- A. 1972
- B. 1988 ✓
- C. 1992
- D. 2001
Why: The IPCC was established in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP) to provide policymakers with regular scientific assessments of climate change.
Q3. What is the primary role of the IPCC?
- A. To conduct original climate experiments and collect new temperature data
- B. To assess the scientific, technical, and socio-economic literature on climate change ✓
- C. To set binding emissions targets for member countries
- D. To monitor compliance with the Paris Agreement
Why: The IPCC does not conduct its own research. Instead, it reviews and synthesizes existing peer-reviewed scientific, technical, and socio-economic literature to produce comprehensive assessment reports for policymakers.
Q4. Who approves the Summary for Policymakers in an IPCC report?
- A. Only the lead authors of each chapter
- B. The IPCC Secretariat alone
- C. Governments, through a line-by-line plenary approval process ✓
- D. The United Nations Security Council
Why: The Summary for Policymakers is approved line by line by member governments during a plenary session. This means government representatives and scientists negotiate the wording together, ensuring the summary is scientifically grounded and politically acceptable.
Q5. Approximately how often does the IPCC typically publish a full Assessment Report?
- A. Every year
- B. Every five to seven years ✓
- C. Every 20 years
- D. Only once
Why: The IPCC has traditionally released comprehensive Assessment Reports roughly every five to seven years, with each cycle incorporating the latest research. The Sixth Assessment Report cycle was completed in 2023.
Module 2
Module 2: Structure of an IPCC Assessment Report
Structure of an IPCC Assessment Report
Knowledge check
Q1. Which IPCC document is designed to provide policymakers with a concise summary of the key findings of a full assessment report?
- A. Technical Summary
- B. Summary for Policymakers (SPM) ✓
- C. Synthesis Report
- D. Special Report
Why: The Summary for Policymakers (SPM) is a concise, policy-relevant summary of the key findings of each Working Group contribution. It is approved line by line by member governments, while the underlying chapters are written by scientists.
Q2. How many Working Groups produce the content of an IPCC Assessment Report?
- A. Two
- B. Three ✓
- C. Four
- D. Five
Why: Three Working Groups produce the core content: Working Group I (physical science basis), Working Group II (impacts, adaptation and vulnerability), and Working Group III (mitigation of climate change). A fourth group handles national greenhouse gas inventories, but it is not one of the three report-writing groups.
Q3. Which document synthesizes the findings of the three Working Group contributions along with the Special Reports of a given assessment cycle?
- A. Synthesis Report ✓
- B. Technical Summary
- C. Glossary
- D. Methodology Annex
Why: The Synthesis Report integrates the findings from the Working Group contributions and any Special Reports produced during the assessment cycle. It is the overarching document that addresses the full scope of the assessment.
Q4. What is the main purpose of the Technical Summary within a Working Group report?
- A. To list all cited references
- B. To provide a more detailed bridge between the full chapters and the Summary for Policymakers ✓
- C. To define the IPCC's organizational structure
- D. To record the financial budget of the assessment
Why: The Technical Summary condenses the full chapter content into a more detailed document than the SPM, linking the scientific chapters to the policymaker summary. It is written by the authors and gives readers a fuller technical overview.
Q5. Which element of an IPCC report is typically written by the scientific authors and reviewed by experts, and forms the most detailed and comprehensive part of the assessment?
- A. The Summary for Policymakers
- B. The Synthesis Report
- C. The chapters of each Working Group report ✓
- D. The press release
Why: The chapters are the full scientific assessment, written by lead and contributing authors and reviewed by experts and governments. They contain the most detailed analysis, with the SPM and Technical Summary drawing from them.
Module 3
Module 3: Working Groups I, II, and III Explained
Working Groups I, II, and III Explained
Knowledge check
Q1. Which IPCC Working Group is responsible for assessing the physical science basis of climate change?
- A. Working Group I ✓
- B. Working Group II
- C. Working Group III
- D. Working Group IV
Why: Working Group I assesses the physical science basis of climate change, including observed changes in the climate system, attribution of causes, and projections of future climate. Working Group II covers impacts, adaptation, and vulnerability, and Working Group III covers mitigation. There is no Working Group IV.
Q2. Which Working Group focuses on impacts, adaptation, and vulnerability to climate change?
- A. Working Group I
- B. Working Group II ✓
- C. Working Group III
- D. Working Group V
Why: Working Group II assesses the impacts of climate change on natural and human systems, the vulnerability of those systems, and the options for adapting to climate change. Working Group I handles the physical science, and Working Group III handles mitigation options.
Q3. Which Working Group is primarily concerned with mitigation of greenhouse gas emissions?
- A. Working Group I
- B. Working Group II
- C. Working Group III ✓
- D. Working Group IV
Why: Working Group III assesses options for mitigating climate change by reducing or preventing greenhouse gas emissions and enhancing sinks. It evaluates technologies, policies, and economic and social considerations for mitigation.
Q4. What is the general purpose of the IPCC Working Group reports?
- A. To set binding international emissions targets
- B. To assess the scientific, technical, and socio-economic literature on climate change ✓
- C. To conduct original climate experiments
- D. To enforce national climate laws
Why: The IPCC does not conduct original research or set binding targets. Its Working Groups assess existing peer-reviewed scientific, technical, and socio-economic literature to provide policymakers with policy-relevant but policy-neutral information.
Q5. Which Working Group would most likely produce an assessment on projected sea-level rise and changes in global temperature?
- A. Working Group I ✓
- B. Working Group II
- C. Working Group III
- D. The IPCC Secretariat
Why: Projections of physical climate variables such as global temperature and sea-level rise are core topics of Working Group I, which addresses the physical science basis. Working Group II would address the consequences of these changes, while Working Group III addresses responses through mitigation.
Module 4
Module 4: The Summary for Policymakers
The Summary for Policymakers
Knowledge check
Q1. What is the primary purpose of the Summary for Policymakers (SPM) in an IPCC report?
- A. To provide detailed technical methodologies used by individual scientists
- B. To communicate the key findings of a report to policymakers in a concise, policy-relevant form ✓
- C. To list all the peer-reviewed papers cited in the report
- D. To propose specific national laws that governments should adopt
Why: The SPM distills the main findings of the full report into a concise document aimed at policymakers, while remaining policy-relevant rather than prescriptive.
Q2. Who approves the Summary for Policymakers line by line?
- A. Only the lead authors of the chapters
- B. A single IPCC scientific secretary
- C. Government representatives of IPCC member countries, together with the authors ✓
- D. The United Nations Secretary-General alone
Why: The SPM is approved line by line at plenary sessions by government representatives of IPCC member countries, in collaboration with the scientific authors, which gives it political legitimacy.
Q3. What principle governs the wording of the Summary for Policymakers?
- A. Policymakers may rewrite findings to suit political priorities
- B. Statements must be policy-relevant but policy-neutral, not prescriptive ✓
- C. Findings must always recommend a specific emissions target
- D. Only findings with 100% scientific certainty may be included
Why: The IPCC states that the SPM should be policy-relevant but never policy-prescriptive, meaning it informs choices without recommending particular policies.
Q4. How are levels of confidence and likelihood typically expressed in the SPM?
- A. As informal opinions of the lead authors
- B. Using a standardized calibrated language, such as 'very likely' or 'high confidence' ✓
- C. Using only numerical probabilities with no verbal terms
- D. Through a color-coded traffic light system
Why: The IPCC uses calibrated uncertainty language, with defined terms like 'very likely' (90 to 100% probability) and 'high confidence', so that readers interpret uncertainty consistently.
Q5. Why are SPM statements typically linked back to the underlying full report?
- A. To increase the length of the summary
- B. To allow readers to trace each key finding to its supporting evidence and assessment ✓
- C. Because the full report is legally required to be read first
- D. To hide controversial claims within technical detail
Why: Linking SPM statements to the underlying chapters lets readers trace each finding to the evidence and assessment that supports it, supporting transparency and credibility.
Module 5
Module 5: Scientific Consensus and Confidence Language
Scientific Consensus and Confidence Language
Knowledge check
Q1. In IPCC reports, what does the term 'very likely' conventionally indicate?
- A. A probability of 33 to 66 percent
- B. A probability of 90 to 100 percent ✓
- C. A probability of 50 to 80 percent
- D. A probability of 66 to 90 percent
Why: IPCC calibrated language assigns 'very likely' to outcomes with a 90 to 100 percent probability of occurring, based on expert judgment and the available evidence.
Q2. Which confidence term is used when there is high agreement but limited evidence?
- A. Very high confidence
- B. Medium confidence
- C. Low confidence
- D. High confidence ✓
Why: 'High confidence' is used when there is high agreement among experts and robust evidence, but the evidence base is not as extensive as for 'very high confidence'. Confidence is assessed separately from likelihood.
Q3. What is the main purpose of the calibrated uncertainty language used in IPCC assessment reports?
- A. To express the personal opinions of lead authors
- B. To provide a consistent way of communicating the degree of certainty in findings ✓
- C. To guarantee that every projection will occur
- D. To rank countries by their contribution to climate change
Why: Calibrated language ensures that terms like 'likely' or 'high confidence' carry consistent, defined meanings across the report, helping readers interpret the degree of certainty in each finding.
Q4. Which of the following best describes 'scientific consensus' as used in IPCC assessments?
- A. Unanimous agreement among every scientist in the world
- B. A decision made by government delegates by majority vote
- C. A synthesis of the weight of evidence and the degree of agreement in the peer-reviewed literature ✓
- D. The most recent single study published on a topic
Why: IPCC consensus reflects an assessment of the body of peer-reviewed evidence and the level of agreement among experts, not unanimity or a single study.
Q5. If a finding is described as 'virtually certain' by the IPCC, what probability range does this correspond to?
- A. 50 to 66 percent
- B. 66 to 90 percent
- C. 90 to 100 percent
- D. 99 to 100 percent ✓
Why: 'Virtually certain' is the highest likelihood category in IPCC calibrated language, corresponding to a 99 to 100 percent probability of occurrence.
Module 6
Module 6: Scenarios and Projections in IPCC Reports
Scenarios and Projections in IPCC Reports
Module 7
Module 7: From Assessment to Policy: Using IPCC Findings
From Assessment to Policy: Using IPCC Findings
Knowledge check
Q1. What does IPCC stand for?
- A. International Panel on Climate Change
- B. Intergovernmental Panel on Climate Change ✓
- C. International Program for Climate Change
- D. Intergovernmental Program on Climate Assessment
Why: IPCC stands for Intergovernmental Panel on Climate Change, the UN body established in 1988 by the World Meteorological Organization and the UN Environment Programme to assess scientific information on climate change.
Q2. Which IPCC product is primarily designed to give policymakers a concise, non-prescriptive overview of key findings?
- A. Working Group reports
- B. Special Reports
- C. Summary for Policymakers ✓
- D. Synthesis Report only
Why: The Summary for Policymakers (SPM) is approved line by line by member governments and distills the main findings for decision-makers. It is policy-relevant but explicitly policy-neutral, meaning it does not prescribe specific policies.
Q3. What does the IPCC's principle of being 'policy-relevant but not policy-prescriptive' mean?
- A. The IPCC recommends specific laws that governments must pass
- B. The IPCC provides information useful for policy choices without telling governments which choices to make ✓
- C. The IPCC only publishes findings that are relevant to policy in the United States
- D. The IPCC avoids any discussion of policy options entirely
Why: The IPCC aims to inform policy by presenting scientific findings and policy-relevant options, including their trade-offs, while leaving value judgments and political decisions to governments and societies.
Q4. Which term does the IPCC use to express the level of confidence in a finding, based on evidence and agreement among experts?
- A. Certainty scale
- B. Confidence language such as 'very likely' or 'high confidence' ✓
- C. Probability index from 1 to 10
- D. Consensus score
Why: The IPCC uses calibrated uncertainty language, combining confidence levels (e.g., low, medium, high, very high) based on evidence and agreement, and likelihood terms (e.g., likely, very likely) with defined probability ranges.
Q5. Why is the IPCC's Synthesis Report important for policy use?
- A. It replaces all earlier assessment reports with new data
- B. It integrates findings from the Working Group reports and Special Reports into a single overview for the policy community ✓
- C. It is written only by government officials without scientific input
- D. It focuses exclusively on economic costs of climate change
Why: The Synthesis Report brings together the findings of the three Working Group reports and any Special Reports in each assessment cycle, giving policymakers an integrated picture that links science to decisions such as emissions targets and adaptation planning.