To download all objects using wget:

wget -r -H -N --cut-dirs=6 --include-directories="/v1/" "https://swiftbrowser.dkrz.de/public/dkrz_70a517a8-039d-4a1b-a30d-841923f8bc7a/RCEMIP/dam/RCE_small305/0D/?show_all"

Name
dam_RCE_small305_0D_clivi_avg.nc
dam_RCE_small305_0D_clwvi_avg.nc
dam_RCE_small305_0D_hfls_avg.nc
dam_RCE_small305_0D_hfss_avg.nc
dam_RCE_small305_0D_pr_avg.nc
dam_RCE_small305_0D_prw_avg.nc
dam_RCE_small305_0D_rlds_avg.nc
dam_RCE_small305_0D_rldscs_avg.nc
dam_RCE_small305_0D_rlus_avg.nc
dam_RCE_small305_0D_rluscs_avg.nc
dam_RCE_small305_0D_rlut_avg.nc
dam_RCE_small305_0D_rlutcs_avg.nc
dam_RCE_small305_0D_rsds_avg.nc
dam_RCE_small305_0D_rsdscs_avg.nc
dam_RCE_small305_0D_rsdt_avg.nc
dam_RCE_small305_0D_rsus_avg.nc
dam_RCE_small305_0D_rsuscs_avg.nc
dam_RCE_small305_0D_rsut_avg.nc
dam_RCE_small305_0D_rsutcs_avg.nc
dam_RCE_small305_0D_sprw_avg.nc
dam_RCE_small305_0D_spwr_avg.nc