To download all objects using wget:

wget -r -H -N --cut-dirs=3 --include-directories="/v1/" "https://swiftbrowser.dkrz.de/public/dkrz_0913c8f3-e7b6-4f94-9221-06880d4ccfea/DELTAS_INT/?show_all"

Name
DELTAS_INT.ref
hur_delta.nc
hurs_delta.nc
ps_delta.nc
ta_delta.nc
tas_delta.nc
tos_delta.nc
ts_delta.nc
ua_delta.nc
va_delta.nc
zg_delta.nc