Identifying a regional aerosol baseline in the eastern North Atlantic using collocated measurements and a mathematical algorithm to mask high-submicron-number-concentration aerosol events

Gallo, Francesca; Uin, Janek; Springston, Stephen; Wang, Jian; Zheng, Guangjie; Kuang, Chongai; Wood, Robert; Azevedo, Eduardo B.; McComiskey, Allison; Mei, Fan; Theisen, Adam; Kyrouac, Jenni; Aiken, Allison C.

doi:https://doi.org/10.5194/acp-20-7553-2020

Articles | Volume 20, issue 12

https://doi.org/10.5194/acp-20-7553-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Marine aerosols, trace gases, and clouds over the North Atlantic...

https://doi.org/10.5194/acp-20-7553-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 12

Research article

| Highlight paper

|

30 Jun 2020

Research article | Highlight paper |

| 30 Jun 2020

Identifying a regional aerosol baseline in the eastern North Atlantic using collocated measurements and a mathematical algorithm to mask high-submicron-number-concentration aerosol events

Francesca Gallo, Janek Uin, Stephen Springston, Jian Wang, Guangjie Zheng, Chongai Kuang, Robert Wood, Eduardo B. Azevedo, Allison McComiskey, Fan Mei, Adam Theisen, Jenni Kyrouac, and Allison C. Aiken

Supplement

https://doi.org/10.5194/acp-20-7553-2020-supplement

Data sets

Eastern North Atlantic Aerosol Mask (ENA-AM) with the Condensation Particle Counter (CPC) at Supplementary Facility (S01) A. Aiken and F. Gallo https://doi.org/10.5439/1581730

Eastern North Atlantic Aerosol Mask (ENA-AM) with the Condensation Particle Counter (CPC) at Central Facility (C1) during Summer 2017 F. Gallo and A. Aiken https://doi.org/10.5439/1579567

Eastern North Atlantic Aerosol Mask (ENA-AM) with the Condensation Particle Counter (CPC) at Central Facility (C1) during Winter 2017 F. Gallo and A. Aiken https://doi.org/10.5439/1579568

2014, updated hourly. Ultra-High Sensitivity Aerosol Spectrometer (AOSUHSAS). 2017-07-22 to 2017-12-30, Eastern North Atlantic (ENA) Graciosa Island, Azores, Portugal (C1) Atmospheric Radiation Measurement (ARM) user facility https://doi.org/10.5439/1095587

2014, updated hourly. Ultra-High Sensitivity Aerosol Spectrometer (AOSUHSAS). 2017-07-22 to 2017-12-30, Eastern North Atlantic (ENA) Graciosa Island, Azores, Portugal; Supplemental Site (S1) Atmospheric Radiation Measurement (ARM) user facility https://doi.org/10.5439/1095587

2015, updated hourly. Meteorological Measurements associated with the Aerosol Observing System (AOSMET). 2017-07-22 to 2017-12-30, Eastern North Atlantic (ENA) Graciosa Island, Azores, Portugal (C1) Atmospheric Radiation Measurement (ARM) user facility https://doi.org/10.5439/1025153

2015, updated hourly. Meteorological Measurements associated with the Aerosol 10 Observing System (AOSMET). 2017-07-22 to 2017-12-30, Eastern North Atlantic (ENA) Graciosa Island, Azores, Portugal; Supplemental Site (S1) Atmospheric Radiation Measurement (ARM) user facility https://doi.org/10.5439/1025153

2017, updated hourly. Condensation particle counter aboard aircraft 20 (AAFCPCFISO). 2017-06-20 to 2017-07-20, Eastern North Atlantic (ENA) Gulfstream 159 Aircraft (F1) Atmospheric Radiation Measurement (ARM) user facility https://doi.org/10.5439/1368538

2019, updated hourly. Condensation Particle Counter (AOSCPCF). 2017-07-22 to 2018-01-31, Eastern North Atlantic (ENA) Graciosa Island, Azores, Portugal (C1) Atmospheric Radiation Measurement (ARM) user facility https://doi.org/10.5439/1046184

2019, updated hourly. Condensation Particle Counter (AOSCPCF). 2017-07-22 to 2017-12-30, Eastern North Atlantic (ENA) Graciosa Island, Azores, Portugal; Supplemental Site (S1) Atmospheric Radiation Measurement (ARM) user facility https://doi.org/10.5439/1046184

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Short summary

Continuous high-time-resolution ambient data can include periods when aerosol properties do not represent regional aerosol processes due to high-concentration local events. We develop a novel aerosol mask at the U.S. Department of Energy’s Atmospheric Radiation Measurement (ARM) facility in the eastern North Atlantic (ENA). We use two ground sites to validate the mask, include a comparison with aircraft overflights, and provide guidance to increase data quality at ENA and other locations.