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CTD
DBO
37
DBO5
18
DBO6
6
DBO3
5
Distributed Biological Observatory
4
ammonium
4
chlorophyll a concentrations
4
delta O-18
4
dissolved oxygen concentration
4
nitrate
4
nitrite
4
nutrients
4
phosphate
4
pressure
4
salinity
4
silica
4
temperature
4
Chukchi Sea
2
DBO4
2
physical oceanography
2
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