Abstract The use of air sensor technology is increasing worldwide for a variety of applications, however, with significant variability in data quality. The United States Environmental Protection Agency held a workshop in July 2019 to deliberate possible performance targets for air sensors measuring particles with aerodynamic diameters of 10 μm or less (PM10), nitrogen dioxide (NO2), carbon monoxide (CO), and sulfur dioxide (SO2). These performance targets were discussed from the perspective of non-regulatory applications and with the sensors operating primarily in a stationary mode in outdoor environments. Attendees included representatives from multiple levels of government organizations, sensor developers, environmental nonprofits, international organizations, and academia. The workshop addressed the current lack of sensor technology requirements, discussed fit-for-purpose data quality needs, and debated transparency issues. This paper highlights the purpose and key outcomes of the workshop. While more information on performance and applications of sensors is available than in past years, the performance metrics, or parameters used to describe data quality, vary among the studies reports and there is a need for more clear and consistent approaches for evaluating sensor performance. Organizations worldwide are increasingly considering, or are in the process of developing, sensor performance targets and testing protocols. Workshop participants suggested that these new guidelines are highly desirable, would help improve data quality, and would give users more confidence in their data. Given the wide variety of uses for sensors and user backgrounds, as well as varied sensor design features (e.g., communication approaches, data tools, processing/adjustment algorithms and calibration procedures), the need for transparency was a key workshop theme. Suggestions for increasing transparency included documenting and sharing testing and performance data, detailing best practices, and sharing data processing and correction approaches.

中文翻译：

---

审议性能目标：后续研讨会讨论 PM10、NO2、CO 和 SO2 空气传感器目标

摘要 空气传感器技术在全球范围内越来越多地用于各种应用，但数据质量存在显着差异。美国环境保护署于 2019 年 7 月举办了一次研讨会，审议了空气动力学直径为 10 μm 或更小的粒子 (PM10)、二氧化氮 (NO2)、一氧化碳 (CO) 和二氧化硫的空气传感器的可能性能目标（ SO2)。这些性能目标是从非监管应用的角度讨论的，传感器主要在室外环境中以固定模式运行。与会者包括来自各级政府组织、传感器开发商、环境非营利组织、国际组织和学术界的代表。研讨会解决了当前缺乏传感器技术要求的问题，讨论了适合用途的数据质量需求，并讨论了透明度问题。本文重点介绍了研讨会的目的和主要成果。虽然与过去几年相比，可以获得更多关于传感器性能和应用的信息，但用于描述数据质量的性能指标或参数因研究报告而异，因此需要更清晰、更一致的方法来评估传感器性能。世界各地的组织越来越多地考虑或正在开发传感器性能目标和测试协议。研讨会参与者表示，这些新指南非常可取，将有助于提高数据质量，并使用户对其数据更有信心。鉴于传感器和用户背景的广泛用途，以及各种传感器设计特征（例如，通信方法、数据工具、处理/调整算法和校准程序），对透明度的需求是研讨会的一个关键主题。提高透明度的建议包括记录和共享测试和性能数据、详细说明最佳实践以及共享数据处理和更正方法。