Info about retracted_vars.json:
number of retracted datasets: 25092
date of latest retraction: 20190429
created at: 17 Dec 2019 02:26:39 UTC
created by: get_retracted_vars.py
search_esgf commit: 8a4114cea615fc5907af74cee17625c9afb3f68b
SHA256 chksum of retracted_vars.json: 365024bb7896e7f37e5fd5b9a972657ccef5d8e52697ba4c5c0a46e37fe7c0b4