Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session A16: From Grains to Complex Flows to Sustainable Materials: Soft Matter Meets Climate Change
8:00 AM–11:00 AM,
Monday, March 6, 2023
Room: Room 208
Sponsoring
Units:
DSOFT GSNP
Chair: Vinutha H.A., Georgetown University
Abstract: A16.00013 : Comparing Surface and Column-integrated Aerosol Loadings with Relative Humidity as a Correction Factor
10:48 AM–11:00 AM
Presenter:
Jeevan Regmi
(Tribhuvan University, Central Department of Physics)
Authors:
Jeevan Regmi
(Tribhuvan University, Central Department of Physics)
Rudra Aryal
(Franklin Pierce University, 40 University Drive, Rindge NH, USA)
Khem N Poudyal
(Tribhuvan University, Institute of Engineering, Pulchowk, Nepal)
Amod Pokhrel
(University of California, Berkeley, California, USA)
Nabin Malakar
(Worcester State University, Massachusetts, USA)
Madhu Gyawali
(Department of Physics, San Jacinto College, South Campus, 13735 Beamer Rd, Houston, TX 77089,USA)
The bimodal variation is seen in the hourly average PM2.5, with greatest levels in the morning and evening. A minimal concentration is seen in the afternoon and early morning, reflecting the impact of morning and evening cooking and transportation. As a result, it is possible to link the anthropogenic effect to the overall air pollution at the surface level. During the monsoon season, there was a significant drop in the surface level particle content, demonstrating the impact of rainfall and the atmospheric spread of air pollution. After March, there was a noticeable decrease in PM2.5 variability, which can be related to the COVID-19 lockdown's impact on traffic. The contribution of trans-boundary aerosols over the observation site is shown using trajectory cluster analysis.
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