This dataset depends on the following independent variable (i.e, grid):
grid: /Z (depth) ordered [ (0.0) (10.0) (20.0) (30.0) (50.0) (75.0) (100.0) (125.0) (150.0) (200.0) (250.0) (300.0) (400.0) (500.0) (600.0) (700.0) (800.0) (900.0) (1000.0) (1100.0) (1200.0) (1300.0) (1400.0) (1500.0) (1750.0) (2000.0) (2500.0) (3000.0) (3500.0) (4000.0) (4500.0) (5000.0) (5500.0)] :grid
so there will be 33 links below for the different files.
You may want to get a utility like wget which can download sets of files. For example (all one line)
wget -r -l2 -nd --no-parent -e robots=off -v --relative 'http://iridl.ldeo.columbia.edu/SOURCES/.LEVITUS/ANNUAL+.SIO2/downloadsarcinfo.html'
single quotes are necessary in unix to protect the url from expansion; probably necessary in other cases as well
| 0.0 depth |  |
|---|---|
| 10.0 depth | |
| 20.0 depth | |
| 30.0 depth | |
| 50.0 depth | |
| 75.0 depth | |
| 100.0 depth | |
| 125.0 depth | |
| 150.0 depth | |
| 200.0 depth | |
| 250.0 depth | |
| 300.0 depth | |
| 400.0 depth | |
| 500.0 depth | |
| 600.0 depth | |
| 700.0 depth | |
| 800.0 depth | |
| 900.0 depth | |
| 1000.0 depth | |
| 1100.0 depth | |
| 1200.0 depth | |
| 1300.0 depth | |
| 1400.0 depth | |
| 1500.0 depth | |
| 1750.0 depth | |
| 2000.0 depth | |
| 2500.0 depth | |
| 3000.0 depth | |
| 3500.0 depth | |
| 4000.0 depth | |
| 4500.0 depth | |
| 5000.0 depth | |
| 5500.0 depth | |
