Fertilization of the Northwest Pacific Ocean by East Asia air pollutants

Research output: Contribution to journalArticlepeer-review

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Fertilization of the Northwest Pacific Ocean by East Asia air pollutants. / Zhang, Chao; Ito, Akinori; Shi, Zongbo; Aita, Maki Noguchi; Yao, Xiaohong; Chu, Qiang; Shi, Jinhui; Gong, Xiang; Gao, Huiwang.

In: Global Biogeochemical Cycles, Vol. 33, No. 6, 10.07.2019, p. 690-702.

Research output: Contribution to journalArticlepeer-review

Harvard

Zhang, C, Ito, A, Shi, Z, Aita, MN, Yao, X, Chu, Q, Shi, J, Gong, X & Gao, H 2019, 'Fertilization of the Northwest Pacific Ocean by East Asia air pollutants', Global Biogeochemical Cycles, vol. 33, no. 6, pp. 690-702. https://doi.org/10.1029/2018GB006146

APA

Zhang, C., Ito, A., Shi, Z., Aita, M. N., Yao, X., Chu, Q., Shi, J., Gong, X., & Gao, H. (2019). Fertilization of the Northwest Pacific Ocean by East Asia air pollutants. Global Biogeochemical Cycles, 33(6), 690-702. https://doi.org/10.1029/2018GB006146

Vancouver

Author

Zhang, Chao ; Ito, Akinori ; Shi, Zongbo ; Aita, Maki Noguchi ; Yao, Xiaohong ; Chu, Qiang ; Shi, Jinhui ; Gong, Xiang ; Gao, Huiwang. / Fertilization of the Northwest Pacific Ocean by East Asia air pollutants. In: Global Biogeochemical Cycles. 2019 ; Vol. 33, No. 6. pp. 690-702.

Bibtex

@article{a1acbd5c8f704daca2187ada60c0d9d3,
title = "Fertilization of the Northwest Pacific Ocean by East Asia air pollutants",
abstract = "Haze particles as a key air pollutant contain high level of toxins, which were hypothesized to inhibit phytoplankton growth when deposited to the ocean, and thus indirectly affect the climate. However, field observations have yet to provide conclusive evidence to confirm this hypothesis. Onboard microcosm experiments in the Northwest Pacific Ocean (NWPO) show that haze particles collected at the East Asia continent had an inhibition impact on phytoplankton growth only when at very high particle loading (2 mg/L). In contrast, haze particles at low and medium loadings (0.03–0.6 mg/L) stimulated phytoplankton growth and shifted phytoplankton size structure toward larger cells, primarily due to the supply of inorganic nitrogen nutrients from the particles. Model simulations showed that haze particle loading in NWPO surface seawater was usually more than an order of magnitude lower than 2 mg/L. This indicates that haze particles are unlikely to cause harm but to stimulate phytoplankton growth in the nitrogen-limited NWPO. Ocean biogeochemical modeling further shows that deposited nitrogen significantly enhanced surface ocean chlorophyll a concentration in the winter and spring of 2014. Overall, these results demonstrate that haze particles stimulate rather than inhibit primary production in the NWPO.",
keywords = "aerosol, global warming, phyotoplankton, productivity, toxicity, trace metals",
author = "Chao Zhang and Akinori Ito and Zongbo Shi and Aita, {Maki Noguchi} and Xiaohong Yao and Qiang Chu and Jinhui Shi and Xiang Gong and Huiwang Gao",
year = "2019",
month = jul,
day = "10",
doi = "10.1029/2018GB006146",
language = "English",
volume = "33",
pages = "690--702",
journal = "Global Biogeochemical Cycles",
issn = "0886-6236",
publisher = "American Geophysical Union",
number = "6",

}

RIS

TY - JOUR

T1 - Fertilization of the Northwest Pacific Ocean by East Asia air pollutants

AU - Zhang, Chao

AU - Ito, Akinori

AU - Shi, Zongbo

AU - Aita, Maki Noguchi

AU - Yao, Xiaohong

AU - Chu, Qiang

AU - Shi, Jinhui

AU - Gong, Xiang

AU - Gao, Huiwang

PY - 2019/7/10

Y1 - 2019/7/10

N2 - Haze particles as a key air pollutant contain high level of toxins, which were hypothesized to inhibit phytoplankton growth when deposited to the ocean, and thus indirectly affect the climate. However, field observations have yet to provide conclusive evidence to confirm this hypothesis. Onboard microcosm experiments in the Northwest Pacific Ocean (NWPO) show that haze particles collected at the East Asia continent had an inhibition impact on phytoplankton growth only when at very high particle loading (2 mg/L). In contrast, haze particles at low and medium loadings (0.03–0.6 mg/L) stimulated phytoplankton growth and shifted phytoplankton size structure toward larger cells, primarily due to the supply of inorganic nitrogen nutrients from the particles. Model simulations showed that haze particle loading in NWPO surface seawater was usually more than an order of magnitude lower than 2 mg/L. This indicates that haze particles are unlikely to cause harm but to stimulate phytoplankton growth in the nitrogen-limited NWPO. Ocean biogeochemical modeling further shows that deposited nitrogen significantly enhanced surface ocean chlorophyll a concentration in the winter and spring of 2014. Overall, these results demonstrate that haze particles stimulate rather than inhibit primary production in the NWPO.

AB - Haze particles as a key air pollutant contain high level of toxins, which were hypothesized to inhibit phytoplankton growth when deposited to the ocean, and thus indirectly affect the climate. However, field observations have yet to provide conclusive evidence to confirm this hypothesis. Onboard microcosm experiments in the Northwest Pacific Ocean (NWPO) show that haze particles collected at the East Asia continent had an inhibition impact on phytoplankton growth only when at very high particle loading (2 mg/L). In contrast, haze particles at low and medium loadings (0.03–0.6 mg/L) stimulated phytoplankton growth and shifted phytoplankton size structure toward larger cells, primarily due to the supply of inorganic nitrogen nutrients from the particles. Model simulations showed that haze particle loading in NWPO surface seawater was usually more than an order of magnitude lower than 2 mg/L. This indicates that haze particles are unlikely to cause harm but to stimulate phytoplankton growth in the nitrogen-limited NWPO. Ocean biogeochemical modeling further shows that deposited nitrogen significantly enhanced surface ocean chlorophyll a concentration in the winter and spring of 2014. Overall, these results demonstrate that haze particles stimulate rather than inhibit primary production in the NWPO.

KW - aerosol

KW - global warming

KW - phyotoplankton

KW - productivity

KW - toxicity

KW - trace metals

UR - http://www.scopus.com/inward/record.url?scp=85067345107&partnerID=8YFLogxK

U2 - 10.1029/2018GB006146

DO - 10.1029/2018GB006146

M3 - Article

VL - 33

SP - 690

EP - 702

JO - Global Biogeochemical Cycles

JF - Global Biogeochemical Cycles

SN - 0886-6236

IS - 6

ER -