Aerosol Measurements at Utqiagvik, Alaska, from 2022 to 2027 for Sustaining The Utqiagvik Aerosol Record of Decades (STUARD)

### Access

Dataset can be accessed and downloaded from the 'ADC' directory via: [http://arcticdata.io/data/10.18739/A24Q7QS1S](http://arcticdata.io/data/10.18739/A24Q7QS1S)

### Overview

The Arctic is warming faster than any other place on Earth, with sea ice declining rapidly and sources of sea spray and biogenic aerosol emissions changing by consequence. Utqiagvik is at the forefront of this change, abutting one of the largest areas of sea ice loss. This change will have far-reaching impacts to both the environment and the community. Because this change has happened largely in the last decade, now is an important time to both document that change and to continue a data record that will allow for a characterization of the New Arctic, as climate is already altering the Arctic landscape forever. The longest and most complete record of aerosol properties in the American Arctic is that of Utqiagvik, making this unique location serve as a regional record of changes in atmospheric aerosol properties. This dataset will extend the baseline measurements of this Arctic aerosol record, including and continuing the 15-year record of submicron inorganic components (Quinn et al., 2009; Quinn et al., 2002), re-instituting the 2-year record of organic components collected a decade ago (Frossard et al., 2011; Shaw et al., 2010), enhancing the chemical analysis with sulfur isotopes to improve interpretation of emission sources (Kunasek et al., 2010; Thiemens & Lin, 2019), continuing particle number size distribution measurements (Freud et al., 2017), and re-starting cloud condensation nuclei measurements (Schmale, Henning, et al., 2018).

### 获取途径
数据集可通过以下链接从「ADC」目录获取并下载：[http://arcticdata.io/data/10.18739/A24Q7QS1S](http://arcticdata.io/data/10.18739/A24Q7QS1S)

### 概况
北极是全球变暖速率最快的区域，海冰快速消退，海洋飞沫与生物源气溶胶(biogenic aerosol)的排放源随之发生改变。乌特恰维克(Utqiagvik)毗邻海冰消退规模最大的区域之一，处于这一变化的前沿。此类变化将对当地生态环境与社区造成深远影响。由于该类变化主要发生在近十年间，当前既是记录这一变化的关键节点，也是延续数据序列以实现「新北极」特征表征的重要契机——气候变迁已永久性地重塑了北极的地貌格局。乌特恰维克拥有美洲北极地区时长最长、数据最完整的气溶胶(aerosol)特性观测序列，使其成为记录大气气溶胶特性区域变化的标志性观测站点。本数据集将拓展该北极气溶胶观测序列的基线测量内容，具体包括：延续时长15年的亚微米无机组分观测记录（Quinn等，2009；Quinn等，2002）；重启十年前开展的为期2年的有机组分观测记录（Frossard等，2011；Shaw等，2010）；新增硫同位素分析以优化排放源解析工作（Kunasek等，2010；Thiemens & Lin，2019）；延续颗粒物数浓度粒径分布观测（Freud等，2017）；并重新启动云凝结核(cloud condensation nuclei)观测（Schmale、Henning等，2018）。