ch 9 Flashcards
what are the products of photosynth
O2
DMS
water vapour
the films in the two thin film model are _
stagnant
the two films in the thin film model are dominated by
diffusion
diffusion weakens the gradient
film thickness is _ dependent
not gas depenent
what is the net flux described by
ficks law
DA/z =
piston velocity or transfer velocity
DA
diffusion coefficient - diff for diff gasses
inc w inc temp
dec w inc MW
what is at a high concentration at the surface of the oean
DOM
O2
metals
bacteria
what happnes at high winds
microlayer dampens the impact of wind on current but at high winds there is no discernible SML and bubble transport dominates
non inert gasses fluxes
affected also by rxns that inc or dec solubiliyt
CO2 reacts w water forming H2CO3 changing conc in the seawater
what kind of gasses is the ocean a source for
sulfur gasses
halogen gasse
nitrogen gasses
carbon gasses
ocean as a source of gasses and their effects
Greenhouse gasses: CH4 and DMS (carbon and sulfur gasses)
air quality
ozone depletion
what is the ocean a sink for
O3
Persistant organic pollutants- PCBs, DDT, PFAAs
CFCs
SO2
what gasses vary in the ocean
ocean is not always a source or sink for them, they change in time and space
CO2
NH3
H2S
Hg
what are aerosols
solids or liquids suspended in gas phase
