@article{fdi:010071883,
  title = {{S}easonal dynamics of atmospheric and river inputs of black carbon, and impacts on biogeochemical cycles in {H}along {B}ay, {V}ietnam},
  author = {{M}ari, {X}avier and {V}an, {T}. {C}. and {G}uinot, {B}. and {B}rune, {J}. and {L}efebvre, {J}ean-{P}ierre and {R}aimbault, {P}. and {D}ittmar, {T}. and {N}iggemann, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{E}missions of black carbon ({BC}), a product of incomplete combustion of fossil fuels, biofuels and biomass, are high in the {A}sia-{P}acific region, yet input pathways and rates to the ocean are not well constrained. {A}tmospheric and riverine inputs of {BC} in {H}along {B}ay ({V}ietnam), a hotspot of atmospheric {BC}, were studied at monthly intervals during one year. {C}limate in {H}along {B}ay is governed by the monsoon regime, characterized by a northeast winter monsoon (dry season) and southeast summer monsoon (wet season). {D}uring the dry season, atmospheric {BC} concentrations averaged twice those observed during the wet season. {I}n the sea surface microlayer ({SML}) and underlying water ({ULW}), concentrations of particulate {BC} ({PBC}) averaged 539 and 11 mu mol {C} {L}-1, respectively. {D}issolved {BC} ({DBC}) concentrations averaged 2.6 mu mol {C} {L}-1 in both the {SML} and {ULW}. {S}easonal variations indicated that {PBC} concentration in the {SML} was controlled by atmospheric deposition during the dry season, while riverine inputs controlled both {PBC} and {DBC} concentrations in {ULW} during the wet season. {S}patiotemporal variations of {PBC} and {DBC} during the wet season suggest that river runoff was efficient in transporting {PBC} that had accumulated on land during the dry season, and in mobilizing and transporting {DBC} to the ocean. {T}he annual river flux of {PBC} was about 3.8 times higher than that of {DBC}. {T}he monsoon regime controls {BC} input to {H}along {B}ay by favoring dry deposition of {BC} originating from the north during the dry season, and wet deposition and river runoff during the wet season. {H}igh {PBC} concentrations seem to enhance the transfer of organic carbon from dissolved to particulate phase by adsorbing dissolved organic carbon and stimulating aggregation. {S}uch processes may impact the availability and biogeochemical cycling of other dissolved substances, including nutrients, for the coastal marine ecosystem.},
  keywords = {{B}lack carbon ; {A}tmospheric deposition ; {R}iver input ; {S}ea surface microlayer ; {D}issolved organic carbon ; {P}articulate organic carbon ; {VIET} {NAM} ; {HA} {LONG} {BAIE}},
  booktitle = {},
  journal = {{E}lementa : {S}cience of the {A}nthropocene},
  volume = {5},
  numero = {},
  pages = {art. 75 [22 p.]},
  ISSN = {2325-1026},
  year = {2017},
  DOI = {10.1525/elementa.255},
  URL = {https://www.documentation.ird.fr/hor/fdi:010071883},
}