EGU22-4062
https://doi.org/10.5194/egusphere-egu22-4062
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Climatological Ocean Surface Wave Projections using Deep Learning

Peter Mlakar1,6, Davide Bonaldo2, Antonio Ricchi2,3, Sandro Carniel4, and Matjaž Ličer1,5
Peter Mlakar et al.
  • 1Slovenian Environment Agency, Ljubljana, Slovenia
  • 2Institute of Marine Sciences of the National Research Council (CNR-ISMAR), Venice, Italy
  • 3University of L'Aquila/CETEMPS, L'Aquila, Italy
  • 4NATO STO Centre for Maritime Research and Experimentation, La Spezia, Italy
  • 5National Institute of Biology, Marine Biology Station, Piran, Slovenia
  • 6Faculty of Computer and Information Science, University of Ljubljana, Slovenia

We present a numerically cheap machine-learning model which accurately emulates the performances of the surface wave model Simulating WAves Near Shore (SWAN) in the Adriatic basin (north-east Mediterranean Sea).

A ResNet50 inspired deep network architecture with customized spatio-temporal attention layers was used, the network being trained on a 1970-1997 dataset of time-dependent features based on wind fields retrieved from the COSMO-CLM regional climate model (The authors acknowledge Dr. Edoardo Bucchignani (Meteorology Laboratory, Centro Italiano Ricerche Aerospaziali -CIRA-, Capua, Italy), for providing the COSMO-CLM wind fields). SWAN surface wave model outputs for the period of 1970-1997 are used as labels. The period 1998-2000 is used to cross-validate that the network very accurately reproduces SWAN surface wave features (i.e. significant wave height, mean wave period, mean wave direction) at several locations in the Adriatic basin. 

After successful cross validation, a series of projections of ocean surface wave properties based on climate model projections for the end of 21st century (under RCP 8.5 scenario) are performed, and shifts in the emulated wave field properties are discussed.

How to cite: Mlakar, P., Bonaldo, D., Ricchi, A., Carniel, S., and Ličer, M.: Climatological Ocean Surface Wave Projections using Deep Learning, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-4062, https://doi.org/10.5194/egusphere-egu22-4062, 2022.