Dissolved Gases in the Ocean Oxygen profile Anoxic environment

Dissolved Gases in the Ocean Oxygen profile Anoxic environment

Heat enters ocean-atmosphere in tropics, goes out at poles
(Pinet)
Major ocean current systems
Surface patterns extend as deep as 1000 m
Snapshot of ocean temperature – shows lots of eddies…
Warm-core
ring
Cold-core
ring
Dissolved Gases in the Ocean
Oxygen profile
Anoxic environment
Respiration:
Animal, plants and microbial decomposition
Dissolved Gases in the Ocean
Oxygen profile
Thermohaline sources
Mediterranean water North Atl Deep Water
Pacific Deep
water
Red
Sea
Ant. Inter.
water
Antarctic Bottom Water
Mediterranean and Red Sea make Atlantic and Indian Oceans salty
And warmer than the Pacific….
Atlantic temp and salinity
Atlantic – O2 and water mass types (along western Atlantic)
AAIW
NADW
Pacific (160W) temperature and salinity
Pacific O2 and water masses
AAIW
More sluggish in Indian and Pacific Oceans. Particle flux is
cumulative, means older water more nutrient enriched…
T-S curve
T-S diagram
T and S‰ as tracers of water masses
• ‘signature’ generally set at surface ocean
• T and S‰ are considered conservative
properties
• Conservative properties: altered only by
processes happening at the boundaries of
the oceans. Within the ocean interior, see
changes ONLY as a result of the mixing
of water masses
T/S for Atlantic
and Indian Oceans