For over a decade the BOM themselves ran ads on their website:
https://www.governmentnews.com.au/online-ads-now-permanent-f...
https://web.archive.org/web/20230605202001/http://www.bom.go...
They appear to have stopped the practice in June 2023:
https://web.archive.org/web/20230515000000*/http://www.bom.g...