Articles | Volume 28, issue 1
https://doi.org/10.5194/npg-28-111-2021
https://doi.org/10.5194/npg-28-111-2021
Research article
 | 
09 Feb 2021
Research article |  | 09 Feb 2021

Training a convolutional neural network to conserve mass in data assimilation

Yvonne Ruckstuhl, Tijana Janjić, and Stephan Rasp

Viewed

Total article views: 2,999 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
2,292 668 39 2,999 56 41
  • HTML: 2,292
  • PDF: 668
  • XML: 39
  • Total: 2,999
  • BibTeX: 56
  • EndNote: 41
Views and downloads (calculated since 25 Sep 2020)
Cumulative views and downloads (calculated since 25 Sep 2020)

Viewed (geographical distribution)

Total article views: 2,999 (including HTML, PDF, and XML) Thereof 2,733 with geography defined and 266 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 29 Jun 2024
Download
Short summary
The assimilation of observations using standard algorithms can lead to a violation of physical laws (e.g. mass conservation), which is shown to have a detrimental impact on the system's forecast. We use a neural network (NN) to correct this mass violation, using training data generated from expensive algorithms that can constrain such physical properties. We found that, in an idealized set-up, the NN can match the performance of these expensive algorithms at negligible computational costs.