Measurement Report: Long-Range Transport Patterns into the Tropical Northwest Pacific during the CAMP2Ex Aircraft Campaign: Chemical Composition, Size Distributions, and the Impact of Convection

The tropical Northwest Pacific (TNWP) is a receptor for pollution sources throughout Asia and is highly susceptible to climate change, making it imperative to understand long-range transport in this complex aerosol-meteorological environment. Measurements from the NASA Cloud, Aerosol, and Monsoon Pr...

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Main Authors: Hilario, Miguel Ricardo A, Crosbie, Ewan, Shook, Michael, Reid, Jeffrey S, Cambaliza, Maria Obiminda L, Simpas, James Bernard, Ziemba, Luke, DiGangi, Joshua P, Diskin, Glenn S, Nguyen, Phu, Turk, F. Joseph, Winstead, Edward, Robinson, Claire E, Wang, Jian, Zhang, Jiaoshi, Wang, Yang, Yoon, Subin, Flynn, James, Alvarez, Sergio L, Behrangi, Ali, Sorooshian, Armin
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Published: Archīum Ateneo 2021
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Online Access:https://archium.ateneo.edu/physics-faculty-pubs/69
https://archium.ateneo.edu/cgi/viewcontent.cgi?article=1071&context=physics-faculty-pubs
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spelling ph-ateneo-arc.physics-faculty-pubs-10712022-02-08T04:04:03Z Measurement Report: Long-Range Transport Patterns into the Tropical Northwest Pacific during the CAMP2Ex Aircraft Campaign: Chemical Composition, Size Distributions, and the Impact of Convection Hilario, Miguel Ricardo A Crosbie, Ewan Shook, Michael Reid, Jeffrey S Cambaliza, Maria Obiminda L Simpas, James Bernard Ziemba, Luke DiGangi, Joshua P Diskin, Glenn S Nguyen, Phu Turk, F. Joseph Winstead, Edward Robinson, Claire E Wang, Jian Zhang, Jiaoshi Wang, Yang Yoon, Subin Flynn, James Alvarez, Sergio L Behrangi, Ali Sorooshian, Armin The tropical Northwest Pacific (TNWP) is a receptor for pollution sources throughout Asia and is highly susceptible to climate change, making it imperative to understand long-range transport in this complex aerosol-meteorological environment. Measurements from the NASA Cloud, Aerosol, and Monsoon Processes Philippines Experiment (CAMP2Ex; 24 August to 5 October 2019) and back trajectories from the National Oceanic and Atmospheric Administration Hybrid Single Particle Lagrangian Integrated Trajectory Model (HYSPLIT) were used to examine transport into the TNWP from the Maritime Continent (MC), peninsular Southeast Asia (PSEA), East Asia (EA), and the West Pacific (WP). A mid-campaign monsoon shift on 20 September 2019 led to distinct transport patterns between the southwest monsoon (SWM; before 20 September) and monsoon transition (MT; after 20 September). During the SWM, long-range transport was a function of southwesterly winds and cyclones over the South China Sea. Low- (high-) altitude air generally came from MC (PSEA), implying distinct aerosol processing related to convection and perhaps wind shear. The MT saw transport from EA and WP, driven by Pacific northeasterly winds, continental anticyclones, and cyclones over the East China Sea. Composition of transported air differed by emission source and accumulated precipitation along trajectories (APT). MC air was characterized by biomass burning tracers while major components of EA air pointed to Asian outflow and secondary formation. Convective scavenging of PSEA air was evidenced by considerable vertical differences between aerosol species but not trace gases, as well as notably higher APT and smaller particles than other regions. Finally, we observed a possible wet scavenging mechanism acting on MC air aloft that was not strictly linked to precipitation. These results are important for understanding the transport and processing of air masses with further implications for modeling aerosol lifecycles and guiding international policymaking to public health and climate, particularly during the SWM and MT. 2021-03-15T07:00:00Z text application/pdf https://archium.ateneo.edu/physics-faculty-pubs/69 https://archium.ateneo.edu/cgi/viewcontent.cgi?article=1071&context=physics-faculty-pubs Physics Faculty Publications Archīum Ateneo CAMP2Ex Northwest Pacific chemical composition size distribution Atmospheric Sciences Physics
institution Ateneo De Manila University
building Ateneo De Manila University Library
continent Asia
country Philippines
Philippines
content_provider Ateneo De Manila University Library
collection archium.Ateneo Institutional Repository
topic CAMP2Ex
Northwest Pacific
chemical composition
size distribution
Atmospheric Sciences
Physics
spellingShingle CAMP2Ex
Northwest Pacific
chemical composition
size distribution
Atmospheric Sciences
Physics
Hilario, Miguel Ricardo A
Crosbie, Ewan
Shook, Michael
Reid, Jeffrey S
Cambaliza, Maria Obiminda L
Simpas, James Bernard
Ziemba, Luke
DiGangi, Joshua P
Diskin, Glenn S
Nguyen, Phu
Turk, F. Joseph
Winstead, Edward
Robinson, Claire E
Wang, Jian
Zhang, Jiaoshi
Wang, Yang
Yoon, Subin
Flynn, James
Alvarez, Sergio L
Behrangi, Ali
Sorooshian, Armin
Measurement Report: Long-Range Transport Patterns into the Tropical Northwest Pacific during the CAMP2Ex Aircraft Campaign: Chemical Composition, Size Distributions, and the Impact of Convection
description The tropical Northwest Pacific (TNWP) is a receptor for pollution sources throughout Asia and is highly susceptible to climate change, making it imperative to understand long-range transport in this complex aerosol-meteorological environment. Measurements from the NASA Cloud, Aerosol, and Monsoon Processes Philippines Experiment (CAMP2Ex; 24 August to 5 October 2019) and back trajectories from the National Oceanic and Atmospheric Administration Hybrid Single Particle Lagrangian Integrated Trajectory Model (HYSPLIT) were used to examine transport into the TNWP from the Maritime Continent (MC), peninsular Southeast Asia (PSEA), East Asia (EA), and the West Pacific (WP). A mid-campaign monsoon shift on 20 September 2019 led to distinct transport patterns between the southwest monsoon (SWM; before 20 September) and monsoon transition (MT; after 20 September). During the SWM, long-range transport was a function of southwesterly winds and cyclones over the South China Sea. Low- (high-) altitude air generally came from MC (PSEA), implying distinct aerosol processing related to convection and perhaps wind shear. The MT saw transport from EA and WP, driven by Pacific northeasterly winds, continental anticyclones, and cyclones over the East China Sea. Composition of transported air differed by emission source and accumulated precipitation along trajectories (APT). MC air was characterized by biomass burning tracers while major components of EA air pointed to Asian outflow and secondary formation. Convective scavenging of PSEA air was evidenced by considerable vertical differences between aerosol species but not trace gases, as well as notably higher APT and smaller particles than other regions. Finally, we observed a possible wet scavenging mechanism acting on MC air aloft that was not strictly linked to precipitation. These results are important for understanding the transport and processing of air masses with further implications for modeling aerosol lifecycles and guiding international policymaking to public health and climate, particularly during the SWM and MT.
format text
author Hilario, Miguel Ricardo A
Crosbie, Ewan
Shook, Michael
Reid, Jeffrey S
Cambaliza, Maria Obiminda L
Simpas, James Bernard
Ziemba, Luke
DiGangi, Joshua P
Diskin, Glenn S
Nguyen, Phu
Turk, F. Joseph
Winstead, Edward
Robinson, Claire E
Wang, Jian
Zhang, Jiaoshi
Wang, Yang
Yoon, Subin
Flynn, James
Alvarez, Sergio L
Behrangi, Ali
Sorooshian, Armin
author_facet Hilario, Miguel Ricardo A
Crosbie, Ewan
Shook, Michael
Reid, Jeffrey S
Cambaliza, Maria Obiminda L
Simpas, James Bernard
Ziemba, Luke
DiGangi, Joshua P
Diskin, Glenn S
Nguyen, Phu
Turk, F. Joseph
Winstead, Edward
Robinson, Claire E
Wang, Jian
Zhang, Jiaoshi
Wang, Yang
Yoon, Subin
Flynn, James
Alvarez, Sergio L
Behrangi, Ali
Sorooshian, Armin
author_sort Hilario, Miguel Ricardo A
title Measurement Report: Long-Range Transport Patterns into the Tropical Northwest Pacific during the CAMP2Ex Aircraft Campaign: Chemical Composition, Size Distributions, and the Impact of Convection
title_short Measurement Report: Long-Range Transport Patterns into the Tropical Northwest Pacific during the CAMP2Ex Aircraft Campaign: Chemical Composition, Size Distributions, and the Impact of Convection
title_full Measurement Report: Long-Range Transport Patterns into the Tropical Northwest Pacific during the CAMP2Ex Aircraft Campaign: Chemical Composition, Size Distributions, and the Impact of Convection
title_fullStr Measurement Report: Long-Range Transport Patterns into the Tropical Northwest Pacific during the CAMP2Ex Aircraft Campaign: Chemical Composition, Size Distributions, and the Impact of Convection
title_full_unstemmed Measurement Report: Long-Range Transport Patterns into the Tropical Northwest Pacific during the CAMP2Ex Aircraft Campaign: Chemical Composition, Size Distributions, and the Impact of Convection
title_sort measurement report: long-range transport patterns into the tropical northwest pacific during the camp2ex aircraft campaign: chemical composition, size distributions, and the impact of convection
publisher Archīum Ateneo
publishDate 2021
url https://archium.ateneo.edu/physics-faculty-pubs/69
https://archium.ateneo.edu/cgi/viewcontent.cgi?article=1071&context=physics-faculty-pubs
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