Estimation of Pollutant Discharge in the Bohai Sea with Variational Assimilation Method

DOI

10.2991/rsete.2013.175How to use a DOI?

Keywords

VA; Time-varying; IPs; CCs; Pollutant flux

Abstract

Based on the hydrodynamic background field, a Variational Assimilation (VA) Model of pollutant in the Bohai Sea is constructed. The time-varying contamination concentrations (CCs) from the pollution source (PS) are estimated using this model and a new inversion theory is proposed. Some points in the time series are selected as the independent points (IPs), while concentrations of other points are calculated through linear interpolation of these IPs. Through twin numerical experiment, all the given time-varying concentrations are successfully estimated through adjoint method. The cost function decrease greatly, and the ratio of the cost function to its initial value can even reach the magnitude of 10-5, indicating that the adjoint technique is computationally efficient to recover the CCs from the PS.

Copyright

© 2013, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Shen Youli
AU  - Wang Chunhui
AU  - Lv Xianqing
PY  - 2013/08
DA  - 2013/08
TI  - Estimation of Pollutant Discharge in the Bohai Sea with Variational Assimilation Method
BT  - Proceedings of the 2013 the International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE 2013)
PB  - Atlantis Press
SP  - 723
EP  - 726
SN  - 1951-6851
UR  - https://doi.org/10.2991/rsete.2013.175
DO  - 10.2991/rsete.2013.175
ID  - Youli2013/08
ER  -