To download all objects using wget:

wget -r -H -N --cut-dirs=3 --include-directories="/v1/" "https://swiftbrowser.dkrz.de/public/dkrz_1e33ba3a-9ecb-452f-93b9-583cf4a66e57/ICON-NAWDEX/?show_all"

Name
20160923
IOP3 20160923
Movies
Quickplots
nawdexnwp-fh2-0020_2016092200
nawdexnwp-fh2-0021_2016092400
nawdex_combined_BT062_fh2-0020_2016092200.ogv
nawdex_combined_BT062_fh2-0021_2016092400.ogv
nawdex_combined_BT108_fh2-0020_2016092200.ogv
nawdex_combined_BT108_fh2-0021_2016092400.ogv