My research has focused on planetary boundary layer dynamics, atmospheric remote sensing, and air quality. This work reflects my broader interest in understanding how boundary-layer processes influence weather, climate, and environmental conditions. A complete list of my publications is available on Google Scholar; selected publications are highlighted below.

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• ​Elum, D., N. N. Karle, R. K. Sakai, X. Ren, P. Stratton, N. R. Nalli, M. Walker, A. Flores, J. R.

Villanueva, and J. Wilkins (2026). “High Resolution UAV-Based Monitoring of Ambient Methane:

Field Deployment and Intercomparison with Reference Standards”. In: Remote Sensing 18.549. doi:

10.3390/rs18040549.

 

• Karle, N. N., R. K. Sakai, R. D. Rossi, A. Flores, and S. Chiao (2025). “Vertical profiling of Canadian

wildfire smoke in the Baltimore-Washington Corridor – interactions with the planetary boundary layer

and impact on surface air quality”. In: Atmospheric Measurement Techniques 18.22, pp. 6727–6746.

doi: 10.5194/amt-18-6727-2025.

 

• Penland, R., S. Flanagan, L. Ellison, M. Abdurrahman, C. K. Glenn, O. El Hajj, A. Anosike, K. Kumar,

M. A. Callaham, E. L. Loudermilk, N. N. Karle, R. K. Sakai, A. Flores, T. Hewagam, C. Ichoku, J.

O’Brien, and R. Saleh (2025). “The Effect of Combustion Conditions on Emissions of Elemental Carbon

and Organic Carbon and Formation of Secondary Organic Carbon in Simulated Wildland Fires”. In:

ACS ES&T Air 2.10, pp. 2056–2070. doi: 10.1021/acsestair.4c00300.

 

• Guzman-Gonzalez, J., R. M. Fitzgerald, N. N. Karle, R. K. Sakai, and W. R. Stockwell (2024). “Particulate

matter in the American southwest: detection and analysis of dust storms using surface measurements

and ground-based LIDAR”. In: Atmosphere 15.1, p. 110. doi: 10.3390/atmos15010110.

 

• Karle, N. N., R. K. Sakai, S. Chiao, R. M. Fitzgerald, and W. R. Stockwell (2024). “Reinterpreting

Trends: The Impact of Methodological Changes on Reported Sea Salt Aerosol Levels”. In: Atmosphere

15.7, p. 740. doi: 10.3390/atmos15070740.​

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• Karle, N. N., R. K. Sakai, R. M. Fitzgerald, C. Ichoku, F. Mercado, and W. R. Stockwell (2023). “Systematic

analysis of virga and its impact on surface particulate matter observations”. In: Atmospheric

Measurement Techniques 16.4, pp. 1073–1085. doi: 10.5194/amt-16-1073-2023.

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• Lara, P., R. M. Fitzgerald, N. N. Karle, J. Talamantes, M. Miranda, D. Baumgardner, and W. R.

Stockwell (2022). “Winter and wildfire season optical characterization of black and brown carbon in

the El Paso-Ciudad JuÅLarez airshed”. In: Atmosphere 13.8, p. 1201. doi: 10.3390/atmos13081201.​

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• Karle, N. N., R. M. Fitzgerald, R. K. Sakai, D. W. Sullivan, and W. R. Stockwell (2021). “Multiscale

atmospheric emissions, circulation, and meteorological drivers of ozone episodes in El Paso-JuÅLarez

airshed”. In: Atmosphere 12.12, p. 1575. doi: 10.3390/atmos12121575.

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• Karle, N. N., S. Mahmud, R. K. Sakai, R. M. Fitzgerald, V. R. Morris, and W. R. Stockwell (2020).

“Investigation of the successive ozone episodes in the El Paso–Juarez region in the summer of 2017”.

In: Atmosphere 11.5, p. 532. doi: 10.3390/atmos11050532.

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