The Importance of Impoundment interception in Simulating Riverine Dissolved Organic Carbon
Liu, Jiao Jiao ; Liu, Jun Zhi ; Du, Xin Zhong ; Guo, Ren Kui LU
; Duan, Zheng
LU
; Yuan, Bin Jie
and Liu, Yong Qin
(2024)
In Water Resources Research
60(11).
- Abstract
Modeling of riverine dissolved organic carbon (DOC) dynamics is of great importance for the global carbon budget. Impoundment interception changes the travel time of water and DOC from upslope contributing areas, exerting substantial influence on riverine DOC dynamics in the catchments with many impoundments. However, the impact of impoundment interception representation on riverine DOC modeling has not been evaluated so far. This study investigated to what extent impoundment interception representation affects DOC simulations using a newly developed catchment-scale DOC model, which can represent the upslope contributing areas of impoundments and the impoundment interception process. The results showed that streamflow and DOC load... (More)
Modeling of riverine dissolved organic carbon (DOC) dynamics is of great importance for the global carbon budget. Impoundment interception changes the travel time of water and DOC from upslope contributing areas, exerting substantial influence on riverine DOC dynamics in the catchments with many impoundments. However, the impact of impoundment interception representation on riverine DOC modeling has not been evaluated so far. This study investigated to what extent impoundment interception representation affects DOC simulations using a newly developed catchment-scale DOC model, which can represent the upslope contributing areas of impoundments and the impoundment interception process. The results showed that streamflow and DOC load simulation were well simulated regardless of whether impoundment interception was represented, but the simulation of DOC concentrations was satisfiable only when impoundment interception was taken into account. The simulation without impoundment interception produced unrealistic fluctuation of DOC concentration due to the direct mixing of DOC from different sources with contrasting concentration gradients. These results underscored the significance of employing an appropriate model structure for riverine DOC simulation. It is strongly recommended that DOC concentration be utilized for model evaluation in order to attain robust simulation outcomes. Moreover, the newly developed model in this study keeps a balance between the completeness of process presentation and model complexity, occupying a unique “ecological niche” among catchment-scale riverine DOC models.
(Less)
- author
- Liu, Jiao Jiao
; Liu, Jun Zhi
; Du, Xin Zhong
; Guo, Ren Kui
LU
; Duan, Zheng
LU
; Yuan, Bin Jie
and Liu, Yong Qin
- organization
- publishing date
- 2024-11
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- carbon cycling, dissolved organic carbon, impoundment, river, watershed model
- in
- Water Resources Research
- volume
- 60
- issue
- 11
- article number
- e2024WR038133
- publisher
- American Geophysical Union (AGU)
- external identifiers
-
- scopus:85208593053
- ISSN
- 0043-1397
- DOI
- 10.1029/2024WR038133
- language
- English
- LU publication?
- yes
- id
- bc4a6705-7d97-48d0-84ec-aa8c6ee5761e
- date added to LUP
- 2025-01-15 11:25:30
- date last changed
- 2025-01-15 11:26:06
@article{bc4a6705-7d97-48d0-84ec-aa8c6ee5761e,
abstract = {{<p>Modeling of riverine dissolved organic carbon (DOC) dynamics is of great importance for the global carbon budget. Impoundment interception changes the travel time of water and DOC from upslope contributing areas, exerting substantial influence on riverine DOC dynamics in the catchments with many impoundments. However, the impact of impoundment interception representation on riverine DOC modeling has not been evaluated so far. This study investigated to what extent impoundment interception representation affects DOC simulations using a newly developed catchment-scale DOC model, which can represent the upslope contributing areas of impoundments and the impoundment interception process. The results showed that streamflow and DOC load simulation were well simulated regardless of whether impoundment interception was represented, but the simulation of DOC concentrations was satisfiable only when impoundment interception was taken into account. The simulation without impoundment interception produced unrealistic fluctuation of DOC concentration due to the direct mixing of DOC from different sources with contrasting concentration gradients. These results underscored the significance of employing an appropriate model structure for riverine DOC simulation. It is strongly recommended that DOC concentration be utilized for model evaluation in order to attain robust simulation outcomes. Moreover, the newly developed model in this study keeps a balance between the completeness of process presentation and model complexity, occupying a unique “ecological niche” among catchment-scale riverine DOC models.</p>}},
author = {{Liu, Jiao Jiao and Liu, Jun Zhi and Du, Xin Zhong and Guo, Ren Kui and Duan, Zheng and Yuan, Bin Jie and Liu, Yong Qin}},
issn = {{0043-1397}},
keywords = {{carbon cycling; dissolved organic carbon; impoundment; river; watershed model}},
language = {{eng}},
number = {{11}},
publisher = {{American Geophysical Union (AGU)}},
series = {{Water Resources Research}},
title = {{The Importance of Impoundment interception in Simulating Riverine Dissolved Organic Carbon}},
url = {{http://dx.doi.org/10.1029/2024WR038133}},
doi = {{10.1029/2024WR038133}},
volume = {{60}},
year = {{2024}},
}