ERA5 wave climatology

21 August 2024

Photo: FS

Climatological (1980-2019) intra-seasonal (DJF) variability of the zonal wind at 200 hPa. Winds were obtained by summation of all unbalanced (inertia-gravity and Kelvin) wave modes.

The fifth European reanalysis, ERA5, is the most widely used dataset for understanding atmospheric circulation and trends since the mid-20th century. The Atmospheric Dynamics and Predictability Group at the Meteorological Institute has analysed ERA5 in terms of wave motions and published an online atlas that includes mean fields and variability associated with two linear wave regimes: Rossby waves and inertia-gravity waves, as well as the Kelvin wave and mixed Rossby-gravity wave in forthcoming versions. The ERA5 atlas plots can be downloaded, and the data are available upon request.

Contact
Frank Lunkeit, Frank Sielmann, and Nedjeljka Žagar
Universität Hamburg
CEN – Center for Earth System Research and Sustainability
Telefon: +49 40 42838-5073
Email: frank.lunkeit@uni-hamburg.de