Journal article 866 views 139 downloads
Diffusive CH4 fluxes from aquaculture ponds using floating chambers and thin boundary layer equations
Atmospheric Environment, Volume: 253, Start page: 118384
Swansea University Author: Kam Tang
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DOI (Published version): 10.1016/j.atmosenv.2021.118384
Abstract
Static floating chambers (FCs) and thin boundary layer (TBL) modelling were compared for estimating CH4 fluxes across the water-air interface in aquaculture ponds in southeastern China. The surface water CH4 concentrations ranged from 0.4 to 9.1 μmol L-1 and averaged 4.8 ± 0.8 μmol L-1. The ponds we...
Published in: | Atmospheric Environment |
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ISSN: | 1352-2310 |
Published: |
Elsevier BV
2021
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Online Access: |
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URI: | https://cronfa.swan.ac.uk/Record/cronfa56626 |
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Abstract: |
Static floating chambers (FCs) and thin boundary layer (TBL) modelling were compared for estimating CH4 fluxes across the water-air interface in aquaculture ponds in southeastern China. The surface water CH4 concentrations ranged from 0.4 to 9.1 μmol L-1 and averaged 4.8 ± 0.8 μmol L-1. The ponds were a persistent source of CH4 to the atmosphere. Mean CH4 flux based on different TBL models was highly variable and ranging between 19 and316 μmol m-2 h-1. Compared against FCs, three TBL models developed for the open sea, flowing estuarine system and lentic ecosystem overestimated CH4 emission by 40–200%, while the wind tunnel-based TBL model underestimated CH4 emission. Two TBL models developed for lakes gave estimates similar to FCs. |
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Keywords: |
Methane fluxes; Thin boundary layer models; Floating chambers; Water-air interface; Shallow aquaculture pond; Subtropical estuary |
College: |
Faculty of Science and Engineering |
Start Page: |
118384 |