To download all objects using wget:

wget -r -H -N --cut-dirs=5 --include-directories="/v1/" "https://swiftbrowser.dkrz.de/public/dkrz_70a517a8-039d-4a1b-a30d-841923f8bc7a/RCEMIP/WRF_GCM/cps3/?show_all"

Name
RCE_large295
RCE_large300
RCE_large305
RCE_small295
RCE_small300
RCE_small305