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/ICON_AES/RCE_large300/1D/?show_all"

Name
ICON-CRM_RCE_large300_cldfrac_avg.nc
ICON-CRM_RCE_large300_cli_avg.nc
ICON-CRM_RCE_large300_clw_avg.nc
ICON-CRM_RCE_large300_hur_avg.nc
ICON-CRM_RCE_large300_hus_avg.nc
ICON-CRM_RCE_large300_pa_avg.nc
ICON-CRM_RCE_large300_pli_avg.nc
ICON-CRM_RCE_large300_plw_avg.nc
ICON-CRM_RCE_large300_ta_avg.nc
ICON-CRM_RCE_large300_theta_v_avg.nc
ICON-CRM_RCE_large300_tntrl_avg.nc
ICON-CRM_RCE_large300_tntrs_avg.nc
ICON-CRM_RCE_large300_ua_avg.nc
ICON-CRM_RCE_large300_va_avg.nc
ICON-CRM_RCE_large300_zg_avg.nc