http://www.aoml.noaa.gov/phod/research/moc/samoc/sam/data_access.php
ftp://ftp.aoml.noaa.gov/phod/pub/SAM/hydrographic_data/
ftp://ftp.aoml.noaa.gov/phod/pub/SAM/time-series_data/
(cc: @klaus-getzlaff )