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| Titel |
Impact of biomass burning on ocean water quality in Southeast Asia through atmospheric deposition: eutrophication modeling |
| VerfasserIn |
P. Sundarambal, P. Tkalich, R. Balasubramanian |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 10, no. 23 ; Nr. 10, no. 23 (2010-12-01), S.11337-11357 |
| Datensatznummer |
250008925
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| Publikation (Nr.) |
 copernicus.org/acp-10-11337-2010.pdf |
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| Zusammenfassung |
| Atmospheric deposition of nutrients (N and P species) can intensify
anthropogenic eutrophication of coastal waters. It was found that the
atmospheric wet and dry depositions of nutrients was remarkable in the
Southeast Asian region during the course of smoke haze events, as discussed
in a companion paper on field observations (Sundarambal et al., 2010b). The
importance of atmospheric deposition of nutrients in terms of their
biological responses in the coastal waters of the Singapore region was
investigated during hazy days in relation to non-hazy days. The influence of
atmospherically-derived, bio-available nutrients (both inorganic and organic
nitrogen and phosphorus species) on the coastal water quality between hazy
and non-hazy days was studied. A numerical modeling approach was employed to
provide qualitative and quantitative understanding of the relative
importance of atmospheric and ocean nutrient fluxes in this region. A 3-D
eutrophication model, NEUTRO, was used with enhanced features to simulate
the spatial distribution and temporal variations of nutrients, plankton and
dissolved oxygen due to atmospheric nutrient loadings. The percentage
increase of the concentration of coastal water nutrients relative to the
baseline due to atmospheric deposition was estimated between hazy and
non-hazy days. Model computations showed that atmospheric deposition fluxes
of nutrients might account for up to 17 to 88% and 4 to 24% of total
mass of nitrite + nitrate-nitrogen in the water column, during hazy days and
non-hazy days, respectively. The results obtained from the modeling study
could be used for a better understanding of the energy flow in the coastal
zone system, exploring various possible scenarios concerning the atmospheric
deposition of nutrients onto the coastal zone and studying their impacts on
water quality. |
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