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Effects of Meteorology,
Emissions, and Regional Transport
on Atmospheric Nr Deposition in Lake Taihu, China
Mingrui Ma (15279299)
Yuan Ji (5702)
Boqiang Qin (331589)
Guang Gao (17581)
Ao Shen (127290)
Yu Zhao (104852)
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Ecology
Sociology
Biological Sciences not elsewhere classified
Developmental Biology
Marine Biology
Inorganic Chemistry
source apportionment module
provides scientific evidence
major influencing factors
increasingly important contributor
55 ± 0
2017 – 2020
increasingly important role
china atmospheric deposition
meteorological factors played
chinese eutrophic lakes
atmospheric nr deposition
3 </ sub
eutrophic lakes
greater role
nr deposition
x </
nr inputs
sub ><
study advances
regional transport
reduced nitrogen
reactive nitrogen
range transport
partly offsetting
oxidized nitrogen
main drivers
lake taihu
interannual variability
interannual change
external nitrogen
emission abatement
aquatic ecosystems
applied wrf
annual average
agricultural activities
abundant nh
></ sub
Atmospheric deposition has played an increasingly important
role
of reactive nitrogen (Nr) loading in Chinese eutrophic lakes, while
its major influencing factors and sources remained insufficiently
understood. Here, we applied WRF-CMAQ and its source apportionment
module to investigate the interannual change and main drivers of atmospheric
Nr deposition by species and form over Lake Taihu during 2017–2020.
The annual average of Nr deposition was estimated at 6.55 ± 0.18
Gg N yr<sup>–1</sup>, and reduced nitrogen (RDN) accounted
for 70% resulting from abundant NH<sub>3</sub> emissions from agricultural
activities and continuous NO<sub><i>x</i></sub> controls
in the Basin. Meteorological factors played a greater role than emission
abatement in driving the interannual variability of Nr deposition
for both summer and winter. Long-range transport from outside of the
basin became an increasingly important contributor to oxidized nitrogen
(OXN) deposition, partly offsetting the benefits of local NO<sub><i>x</i></sub> controls. Upwind cities were identified with greater
contributions to Nr deposition in winter, whereas the circulation
pattern strongly affected the contributions of cities in summer. This
study advances our understanding of Nr inputs from the atmosphere
to aquatic ecosystems and provides scientific evidence for the management
of external nitrogen to eutrophic lakes.
2026-09-28T00:00:00Z
Text
Journal contribution
10.1021/acs.est.6c08714.s001
https://figshare.com/articles/journal_contribution/Effects_of_Meteorology_Emissions_and_Regional_Transport_on_Atmospheric_Nr_Deposition_in_Lake_Taihu_China/34020592
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