Using FTP to access files
Browsers are ending their support of FTP links so PSL has switched to https links instead. However, you can still ftp files using anonyomous ftp. The ftp path is ftp2.psl.noaa.gov and cd to the directory in the link. Note that ftp.cdc.noaa.gov, an older name, is currently still supported. The paths are the same as the https link after changing the prefix to 'https://downloads' to 'ftp://ftp2' in the link.
Please email psl.data@noaa.gov if you have questions