Precipitation records of anthropogenic nitrogen pollution in two metropolitan cities of Southeast Asia

Kun Zhang; Xue Yan Liu; Wei Song; To Thi Hien; Xianfeng Wang; Zhili Chen; Ho Truong Nam Hai; Shaoneng He

doi:10.1016/j.uclim.2023.101749

Precipitation records of anthropogenic nitrogen pollution in two metropolitan cities of Southeast Asia

Kun Zhang, Xue Yan Liu, Wei Song, To Thi Hien, Xianfeng Wang, Zhili Chen, Ho Truong Nam Hai, Shaoneng He^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Human activities have promoted a rapid and continuous increase in atmospheric nitrogen (N) emission and deposition, resulting in a series of ecological and environmental problems. However, our understanding of N deposition in densely populated tropical regions remains limited, particularly regarding the chemical composition, historical changes, and its association with human activities. In this research, we aim to address these gaps by analyzing concentrations of nitrate (NO₃⁻), ammonium (NH₄⁺) and dissolved organic N (DON) in daily precipitation samples collected in Singapore and Ho Chi Minh City, Vietnam between May 2019 and April 2020. Results reveal that wet N deposition in Singapore and Ho Chi Minh City averaged 31.3 and 30.4 kg N ha⁻¹ yr⁻¹, respectively. Compared to 2001 record, wet N deposition fluxes in Singapore and Hanoi, Vietnam have increased by an average of 78% and 87%, respectively, between 2001 and 2020. Emission data strongly indicate that fossil fuel combustion has significantly elevated both fluxes and chemical composition changes of N deposition in Vietnam. This study provides important observation data of N deposition in tropical urban areas, aiding the assessment of regional N pollution and the management of anthropogenic N emissions in densely populated tropical regions.

Original language	English
Article number	101749
Journal	Urban Climate
Volume	52
DOIs	https://doi.org/10.1016/j.uclim.2023.101749
Publication status	Published - Nov 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2023 Elsevier B.V.

ASJC Scopus Subject Areas

Geography, Planning and Development
Environmental Science (miscellaneous)
Urban Studies
Atmospheric Science

Keywords

Ammonium
Atmospheric nitrogen deposition
Dissolved organic nitrogen
Nitrate

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.uclim.2023.101749

Cite this

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title = "Precipitation records of anthropogenic nitrogen pollution in two metropolitan cities of Southeast Asia",

abstract = "Human activities have promoted a rapid and continuous increase in atmospheric nitrogen (N) emission and deposition, resulting in a series of ecological and environmental problems. However, our understanding of N deposition in densely populated tropical regions remains limited, particularly regarding the chemical composition, historical changes, and its association with human activities. In this research, we aim to address these gaps by analyzing concentrations of nitrate (NO3−), ammonium (NH4+) and dissolved organic N (DON) in daily precipitation samples collected in Singapore and Ho Chi Minh City, Vietnam between May 2019 and April 2020. Results reveal that wet N deposition in Singapore and Ho Chi Minh City averaged 31.3 and 30.4 kg N ha−1 yr−1, respectively. Compared to 2001 record, wet N deposition fluxes in Singapore and Hanoi, Vietnam have increased by an average of 78% and 87%, respectively, between 2001 and 2020. Emission data strongly indicate that fossil fuel combustion has significantly elevated both fluxes and chemical composition changes of N deposition in Vietnam. This study provides important observation data of N deposition in tropical urban areas, aiding the assessment of regional N pollution and the management of anthropogenic N emissions in densely populated tropical regions.",

keywords = "Ammonium, Atmospheric nitrogen deposition, Dissolved organic nitrogen, Nitrate",

author = "Kun Zhang and Liu, {Xue Yan} and Wei Song and Hien, {To Thi} and Xianfeng Wang and Zhili Chen and Hai, {Ho Truong Nam} and Shaoneng He",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = nov,

doi = "10.1016/j.uclim.2023.101749",

language = "English",

volume = "52",

journal = "Urban Climate",

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TY - JOUR

T1 - Precipitation records of anthropogenic nitrogen pollution in two metropolitan cities of Southeast Asia

AU - Zhang, Kun

AU - Liu, Xue Yan

AU - Song, Wei

AU - Hien, To Thi

AU - Wang, Xianfeng

AU - Chen, Zhili

AU - Hai, Ho Truong Nam

AU - He, Shaoneng

PY - 2023/11

Y1 - 2023/11

N2 - Human activities have promoted a rapid and continuous increase in atmospheric nitrogen (N) emission and deposition, resulting in a series of ecological and environmental problems. However, our understanding of N deposition in densely populated tropical regions remains limited, particularly regarding the chemical composition, historical changes, and its association with human activities. In this research, we aim to address these gaps by analyzing concentrations of nitrate (NO3−), ammonium (NH4+) and dissolved organic N (DON) in daily precipitation samples collected in Singapore and Ho Chi Minh City, Vietnam between May 2019 and April 2020. Results reveal that wet N deposition in Singapore and Ho Chi Minh City averaged 31.3 and 30.4 kg N ha−1 yr−1, respectively. Compared to 2001 record, wet N deposition fluxes in Singapore and Hanoi, Vietnam have increased by an average of 78% and 87%, respectively, between 2001 and 2020. Emission data strongly indicate that fossil fuel combustion has significantly elevated both fluxes and chemical composition changes of N deposition in Vietnam. This study provides important observation data of N deposition in tropical urban areas, aiding the assessment of regional N pollution and the management of anthropogenic N emissions in densely populated tropical regions.

AB - Human activities have promoted a rapid and continuous increase in atmospheric nitrogen (N) emission and deposition, resulting in a series of ecological and environmental problems. However, our understanding of N deposition in densely populated tropical regions remains limited, particularly regarding the chemical composition, historical changes, and its association with human activities. In this research, we aim to address these gaps by analyzing concentrations of nitrate (NO3−), ammonium (NH4+) and dissolved organic N (DON) in daily precipitation samples collected in Singapore and Ho Chi Minh City, Vietnam between May 2019 and April 2020. Results reveal that wet N deposition in Singapore and Ho Chi Minh City averaged 31.3 and 30.4 kg N ha−1 yr−1, respectively. Compared to 2001 record, wet N deposition fluxes in Singapore and Hanoi, Vietnam have increased by an average of 78% and 87%, respectively, between 2001 and 2020. Emission data strongly indicate that fossil fuel combustion has significantly elevated both fluxes and chemical composition changes of N deposition in Vietnam. This study provides important observation data of N deposition in tropical urban areas, aiding the assessment of regional N pollution and the management of anthropogenic N emissions in densely populated tropical regions.

KW - Ammonium

KW - Atmospheric nitrogen deposition

KW - Dissolved organic nitrogen

KW - Nitrate

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Precipitation records of anthropogenic nitrogen pollution in two metropolitan cities of Southeast Asia

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

UN SDGs

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