Two Days Workshop to Study Wintertime Urban Atmospheric Pollution Processes; Fairbanks, Alaska; Mid-May 2018

该项目支持将于2018年5月上旬至中旬在阿拉斯加州费尔班克斯举行的为期2天的"冬季城市大气污染过程研究研讨会"。 讲习班的目标是确定在了解寒冷和黑暗条件下发生的大气化学机制方面的基本知识差距，并制定战略，以评估冬季污染条件下的化学、微物理和动力过程。 预计讲习班将改进区域模型，以便更好地预测城市空气质量和设计城市地区冬季空气污染减轻战略，目前，在持续低于冰点温度的区域进行的有限测量导致区域空气质量模型不能正确反映污染物的变化。 研讨会将讨论的科学问题包括：（1）在寒冷和黑暗条件下，次生化学在增加细颗粒物污染方面的作用是什么？（2）冬季的主要排放源是什么，这些排放如何影响污染物的处理？ 该研讨会将作为国际全球大气化学（IGAC）/国际北极科学共同体（IASC）“北极空气污染：气候，环境和社会”（PACES）项目的一部分举行。

This project supports the "Workshop to study wintertime urban atmospheric pollution processes" to be held in Fairbanks Alaska during 2 days in early to mid-May 2018. The goals of the workshop are to identify fundamental knowledge gaps in the understanding of atmospheric chemical mechanisms occurring under cold and dark conditions, and to develop strategies for evaluating chemical, microphysical, and dynamical processes under polluted wintertime conditions. The workshop is expected to result in improved regional modeling for better predictions of urban air quality and design of wintertime air pollution mitigation strategies for urban areas.Currently, limited measurements in regions with persistent sub-freezing temperatures result in regional air quality models that do not properly reflect pollutant transformations. Scientific questions to be addressed in the workshop include the following: (1) What is the role of secondary chemistry in increasing fine particulate pollution under cold and dark conditions? and (2) What are the key wintertime emission sources, and how do these emissions impact processing of pollution? This workshop will be held as part of the International Global Atmospheric Chemistry (IGAC)/International Arctic Science Community (IASC) "Air Pollution in the Arctic: Climate, Environment, and Societies" (PACES) project.