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_large295/2D/?show_all"

Name
ICON-CRM_RCE_large295_clivi.nc
ICON-CRM_RCE_large295_clwvi.nc
ICON-CRM_RCE_large295_hfls.nc
ICON-CRM_RCE_large295_hfss.nc
ICON-CRM_RCE_large295_pr.nc
ICON-CRM_RCE_large295_prw.nc
ICON-CRM_RCE_large295_psl.nc
ICON-CRM_RCE_large295_rlds.nc
ICON-CRM_RCE_large295_rldscs.nc
ICON-CRM_RCE_large295_rlus.nc
ICON-CRM_RCE_large295_rlut.nc
ICON-CRM_RCE_large295_rlutcs.nc
ICON-CRM_RCE_large295_rsds.nc
ICON-CRM_RCE_large295_rsdscs.nc
ICON-CRM_RCE_large295_rsdt.nc
ICON-CRM_RCE_large295_rsus.nc
ICON-CRM_RCE_large295_rsuscs.nc
ICON-CRM_RCE_large295_rsut.nc
ICON-CRM_RCE_large295_rsutcs.nc
ICON-CRM_RCE_large295_tabot.nc
ICON-CRM_RCE_large295_tas.nc
ICON-CRM_RCE_large295_uabot.nc
ICON-CRM_RCE_large295_uas.nc
ICON-CRM_RCE_large295_vabot.nc
ICON-CRM_RCE_large295_vas.nc
ICON-CRM_RCE_large295_wa500.nc