Assessing the Impacts of Future Global Air Pollution Scenarios: Implications for HTAP2, AMAP, and Global IAMs

• What are the most important policy-relevant science questions to address with respect to atmospheric modeling of air pollution due to sources inside and outside the Arctic?
• Are there additional relevant activities (completed, ongoing, or planned) that should be considered as we assess future opportunities?
• What questions can be addressed in the short term (i.e., what analysis can be completed by Dec 2016 for inclusion in the ACP special issue)?
• What questions can be addressed over the next 2-3 years?
• What opportunities are there to build upon past and ongoing work within TF HTAP and AMAP to address new questions?
• What are the critical steps necessary to advance this work in the short (2016) and longer terms (2017-2018)?

• What are the most important uncertainties with respect to current and future air pollution emissions within and near the Arctic?
• What policies or development scenarios should be investigated?
• Are there additional relevant activities (completed, ongoing, or planned) that should be considered as we assess future opportunities?
• What questions can be addressed in the short term (i.e., what analysis can be completed by Dec 2016 for inclusion in the ACP special issue)?
• What questions can be addressed over the next 2-3 years?
• What opportunities are there to build upon past and ongoing work within TF HTAP and AMAP to address new questions?
• What are the critical steps necessary to advance this work in the short (2016) and longer terms (2017-2018)?

• What are the most important impact endpoints to focus on with respect to Arctic inhabitants, ecosystems, and climate?
• Are there challenges for impact assessment that are specific to the Arctic, as compared to other regions of the world?
• Are there additional relevant activities (completed, ongoing, or planned) that should be considered as we assess future opportunities?
• What questions can be addressed in the short term (i.e., what analysis can be completed by Dec 2016 for inclusion in the ACP special issue)?
• What questions can be addressed over the next 2-3 years?
• What opportunities are there to build upon past and ongoing work within TF HTAP and AMAP to address new questions?
• What are the critical steps necessary to advance this work in the short (2016) and longer terms (2017-2018)?

• What are the most important policy-relevant science questions or insights from HTAP2 simulations and other recent efforts to model air pollution at the global to regional scale?
• Are there additional relevant activities (completed, ongoing, or planned) that should be considered as we assess future opportunities?
• What questions can be addressed in the short term (i.e., what analysis can be completed by Dec 2016 for inclusion in the ACP special issue)?
• What questions can be addressed over the next 2-3 years?
• What opportunities are there to build upon past and ongoing work within TF HTAP and AMAP to address new questions?
• What are the critical steps necessary to advance this work in the short (2016) and longer terms (2017-2018)?

• What are the biggest deficiencies in our ability to represent air pollution sources and their health, ecosystem, and climate impacts at the global and regional scale in integrated assessment models and decision support tools?
• Are there additional relevant activities (completed, ongoing, or planned) that should be considered as we assess future opportunities?
• What opportunities exist for the work of HTAP2 and other recent air pollution modeling efforts to inform future integrated assessment modeling efforts?

• Given the scope of impacts considered and methods employed in current IAMs and in HTAP2, what improvements are most needed to improve estimation of air pollution health impacts on the global and regional scale?
• Are there additional relevant activities (completed, ongoing, or planned) that should be considered as we assess future opportunities?
• What questions can be addressed in the short term (i.e., what analysis can be completed by Dec 2016 for inclusion in the ACP special issue)?
• What questions can be addressed over the next 2-3 years?
• What are the critical steps necessary to advance this work in the short (2016) and longer terms (2017-2018)?

• Given the scope of impacts considered and methods employed in current IAMs and in HTAP2, what improvements are most needed to improve estimation of ecosystem impacts of air pollution on the global and regional scale?
• Are there additional relevant activities (completed, ongoing, or planned) that should be considered as we assess future opportunities?
• What questions can be addressed in the short term (i.e., what analysis can be completed by Dec 2016 for inclusion in the ACP special issue)?
• What questions can be addressed over the next 2-3 years?
• What are the critical steps necessary to advance this work in the short (2016) and longer terms (2017-2018)?

• Are there additional relevant activities (completed, ongoing, or planned) that should be considered as we assess future opportunities?
• Given the air pollution emissions scenarios that have been developed, what additional scenarios or specific policies should be assessed?
• How might the effectiveness of mitigation policies differ in different regions of the world and how might the results of HTAP2 and other information be used to characterize those differences?
• What questions can be addressed in the short term (i.e., what analysis can be completed by Dec 2016 for inclusion in the ACP special issue)?
• What questions can be addressed over the next 2-3 years?
• What are the critical steps necessary to advance this work in the short (2016) and longer terms (2017-2018)?

Western NA Performance Evaluation

• How can insights from current global and regional model evaluation efforts be used to characterize (qualitatively or quantitatively) our level of confidence in the information (e.g. source/receptor relationships) carried into integrated assessment and impact assessment modeling?
• Are there additional relevant activities (completed, ongoing, or planned) that should be considered as we assess future opportunities?
• How does the uncertainty in the atmospheric modeling results compare to the uncertainty in other information included in impact and integrated assessment?
• What methods, tools, or analyses could be used practically to improve the characterization of uncertainty in assessments of air pollution and its impacts?
• What questions can be addressed in the short term (i.e., what analysis can be completed by Dec 2016 for inclusion in the ACP special issue)?
• What questions can be addressed over the next 2-3 years?
• What are the critical steps necessary to advance this work in the short (2016) and longer terms (2017-2018)?