Remote-sensing detectability of airborne Arctic dust

O'Neill, Norman T.; Ranjbar, Keyvan; Ivănescu, Liviu; Blanchard, Yann; Sayedain, Seyed Ali; AboEl-Fetouh, Yasmin

doi:https://doi.org/10.5194/acp-25-27-2025

Articles | Volume 25, issue 1

https://doi.org/10.5194/acp-25-27-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-25-27-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 1

Research article

|

06 Jan 2025

Research article |

| 06 Jan 2025

Remote-sensing detectability of airborne Arctic dust

Norman T. O'Neill, Keyvan Ranjbar, Liviu Ivănescu, Yann Blanchard, Seyed Ali Sayedain, and Yasmin AboEl-Fetouh

Supplement

https://doi.org/10.5194/acp-25-27-2025-supplement

Data sets

High Spectral Resolution Lidar (HSRL). 2015-03-22 to 2015-03-22, North Slope Alaska (NSA) Central Facility, Barrow AK (C1), Compiled by R. Bambha, E. Eloranta, J. Garcia, and B. Ermold ARM - Atmospheric Radiation Measurement user facility https://doi.org/10.5439/1984765

Active Remote Sensing of CLouds (ARSCL) product using Ka-band ARM Zenith Radars (ARSCLKAZRBND1KOLLIAS). 2015-03-22 to 2015-03-22, North Slope Alaska (NSA) Central Facility, Barrow AK (C1), Compiled by K. Johnson, S. Giangrande, and T. Toto ARM - Atmospheric Radiation Measurement user facility https://doi.org/10.5439/1393438

CALIPSO Infrared Imaging Radiometer (IIR) Level 2 Swath, V4-20 NASA/LARC/SD/ASDC https://doi.org/10.5067/CALIOP/CALIPSO/CAL_IIR_L2_Swath-Standard-V4-20

Remote-sensing detectability of airborne Arctic dust - dataset Norman T. O’Neil et al. https://doi.org/10.5281/zenodo.14507749

Model code and software

Remote-sensing detectability of airborne Arctic dust - code Norman T. O'Neill et al. https://doi.org/10.5281/zenodo.14201222

MISR Interactive eXplorer (MINX) v4.1 NASA Langley Atmospheric Science Data Center https://github.com/nasa/MINX

MODTRAN6: a major upgrade of the MODTRAN radiative transfer code A. Berk et al. https://doi.org/10.1117/12.2050433

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Short summary

Dust from mid-latitude deserts or from local drainage basins is a weak component of atmospheric aerosols in the Arctic. Satellite-based dust estimates are often overestimated because dust and cloud measurements can be confused. Illustrations are given with an emphasis on the flawed claim that a classic indicator of dust (negative brightness temperature differences) is proof of the presence of airborne Arctic dust. Low-altitude warm-water plumes are the likely source of such negative values.