Spatial distribution of riverine DOC inputs to the ocean: an updated global synthesis
On the basis of most up-to-date literature data, this study evaluated the influxes of dissolved organic carbon (DOC) to the ocean. Using the DOC concentrations in 118 world rivers and long-term average river discharges, we estimated the river influxes of DOC to the coastal seas as 0.21 Pg C yr(-1)....
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ftxiamenuniv:oai:dspace.xmu.edu.cn:2288/15492 2023-05-15T15:02:15+02:00 Spatial distribution of riverine DOC inputs to the ocean: an updated global synthesis Dai, Minhan 戴民汉 Yin, Zhiqiang Meng, Feifei Liu, Qian Cai, Wei-Jun 2013-04-03 https://doi.org/10.1016/j.cosust.2012.03.003 http://dspace.xmu.edu.cn/handle/2288/15492 en eng 1877-3435 http://dx.doi.org/10.1016/j.cosust.2012.03.003 WOS:000304734500003 http://dspace.xmu.edu.cn/handle/2288/15492 DISSOLVED ORGANIC-CARBON SUBMARINE GROUNDWATER DISCHARGE FRESH-WATER DISCHARGE NUTRIENT FLUXES PORE-WATER SUBTERRANEAN ESTUARY COASTAL OCEAN AMAZON RIVER ARCTIC-OCEAN TRACE-METAL Article 2013 ftxiamenuniv https://doi.org/10.1016/j.cosust.2012.03.003 2020-07-21T11:24:54Z On the basis of most up-to-date literature data, this study evaluated the influxes of dissolved organic carbon (DOC) to the ocean. Using the DOC concentrations in 118 world rivers and long-term average river discharges, we estimated the river influxes of DOC to the coastal seas as 0.21 Pg C yr(-1). This flux was reduced to 0.19 Pg C yr(-1) when we took into account DOC removal during its transport into the Arctic. When we further adopted an average removal rate of 10% for the rest of the river DOC input into the coastal ocean, we obtained an estimate of the global river DOC flux of 0.17 Pg C yr(-1), which is at the lower end of prior estimations. Considering the seasonal variation of the river end-member DOC concentration, our current estimate of the global river DOC discharge is subject to an uncertainty of similar to 30%.DOC fluxes into the ocean have significant spatial variations in terms of their continents of origin, recipient coastal seas, ocean basins and latitudinal zones. The highest DOC flux was from South America into the western ocean boundaries and eventually into the Atlantic Ocean. The most abundant riverine DOC discharge was in the low latitudinal zones with 38.0 and 90.0 Tg C yr(-1) in the 0-30 degrees N and 0-30 degrees S zones, respectively, the combination of which accounted for similar to 62% of the global DOC input. On the basis of these updated fluxes, we estimated a global river mean DOC concentration of 5.29 mg L-1. National Basic Research Program of China (973 Program) [2009CB421204]; State Oceanic Administration People's Republic of China [200905012, 200905012-6]; National Natural Science Foundation of China [41121091, 90711005] Article in Journal/Newspaper Arctic Arctic Ocean Xiamen University Institutional Repository Arctic Arctic Ocean Current Opinion in Environmental Sustainability 4 2 170 178 |
institution |
Open Polar |
collection |
Xiamen University Institutional Repository |
op_collection_id |
ftxiamenuniv |
language |
English |
topic |
DISSOLVED ORGANIC-CARBON SUBMARINE GROUNDWATER DISCHARGE FRESH-WATER DISCHARGE NUTRIENT FLUXES PORE-WATER SUBTERRANEAN ESTUARY COASTAL OCEAN AMAZON RIVER ARCTIC-OCEAN TRACE-METAL |
spellingShingle |
DISSOLVED ORGANIC-CARBON SUBMARINE GROUNDWATER DISCHARGE FRESH-WATER DISCHARGE NUTRIENT FLUXES PORE-WATER SUBTERRANEAN ESTUARY COASTAL OCEAN AMAZON RIVER ARCTIC-OCEAN TRACE-METAL Dai, Minhan 戴民汉 Yin, Zhiqiang Meng, Feifei Liu, Qian Cai, Wei-Jun Spatial distribution of riverine DOC inputs to the ocean: an updated global synthesis |
topic_facet |
DISSOLVED ORGANIC-CARBON SUBMARINE GROUNDWATER DISCHARGE FRESH-WATER DISCHARGE NUTRIENT FLUXES PORE-WATER SUBTERRANEAN ESTUARY COASTAL OCEAN AMAZON RIVER ARCTIC-OCEAN TRACE-METAL |
description |
On the basis of most up-to-date literature data, this study evaluated the influxes of dissolved organic carbon (DOC) to the ocean. Using the DOC concentrations in 118 world rivers and long-term average river discharges, we estimated the river influxes of DOC to the coastal seas as 0.21 Pg C yr(-1). This flux was reduced to 0.19 Pg C yr(-1) when we took into account DOC removal during its transport into the Arctic. When we further adopted an average removal rate of 10% for the rest of the river DOC input into the coastal ocean, we obtained an estimate of the global river DOC flux of 0.17 Pg C yr(-1), which is at the lower end of prior estimations. Considering the seasonal variation of the river end-member DOC concentration, our current estimate of the global river DOC discharge is subject to an uncertainty of similar to 30%.DOC fluxes into the ocean have significant spatial variations in terms of their continents of origin, recipient coastal seas, ocean basins and latitudinal zones. The highest DOC flux was from South America into the western ocean boundaries and eventually into the Atlantic Ocean. The most abundant riverine DOC discharge was in the low latitudinal zones with 38.0 and 90.0 Tg C yr(-1) in the 0-30 degrees N and 0-30 degrees S zones, respectively, the combination of which accounted for similar to 62% of the global DOC input. On the basis of these updated fluxes, we estimated a global river mean DOC concentration of 5.29 mg L-1. National Basic Research Program of China (973 Program) [2009CB421204]; State Oceanic Administration People's Republic of China [200905012, 200905012-6]; National Natural Science Foundation of China [41121091, 90711005] |
format |
Article in Journal/Newspaper |
author |
Dai, Minhan 戴民汉 Yin, Zhiqiang Meng, Feifei Liu, Qian Cai, Wei-Jun |
author_facet |
Dai, Minhan 戴民汉 Yin, Zhiqiang Meng, Feifei Liu, Qian Cai, Wei-Jun |
author_sort |
Dai, Minhan |
title |
Spatial distribution of riverine DOC inputs to the ocean: an updated global synthesis |
title_short |
Spatial distribution of riverine DOC inputs to the ocean: an updated global synthesis |
title_full |
Spatial distribution of riverine DOC inputs to the ocean: an updated global synthesis |
title_fullStr |
Spatial distribution of riverine DOC inputs to the ocean: an updated global synthesis |
title_full_unstemmed |
Spatial distribution of riverine DOC inputs to the ocean: an updated global synthesis |
title_sort |
spatial distribution of riverine doc inputs to the ocean: an updated global synthesis |
publishDate |
2013 |
url |
https://doi.org/10.1016/j.cosust.2012.03.003 http://dspace.xmu.edu.cn/handle/2288/15492 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_relation |
1877-3435 http://dx.doi.org/10.1016/j.cosust.2012.03.003 WOS:000304734500003 http://dspace.xmu.edu.cn/handle/2288/15492 |
op_doi |
https://doi.org/10.1016/j.cosust.2012.03.003 |
container_title |
Current Opinion in Environmental Sustainability |
container_volume |
4 |
container_issue |
2 |
container_start_page |
170 |
op_container_end_page |
178 |
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1766334219279138816 |