Use this web page to find specific data files available from the public ftp file
archive of the ESRL Global Monitoring Division.
Alternatively, you can browse the GMD ftp server.
Click on the icons (
under the 'Data' table heading in the dataset description boxes to either download
the data file desired, or take you to the appropriate directory on the ftp server,
where you can make selections based on date.
Select from the following lists to narrow your search.