106CO2 + 50 SiO4 + 16HNO3 + H3PO4 + 0.001 Fe + 122H2O → og gnibuloni bos ((CH2O) 106 (SiO4) 50 (NH3) 16(H3PO4) Fe0.001 + 13802 a. Calculate the change in (total) CO2 in the ocean surface mixed (Temp = 25C, Salinity = 35 ppt) layer if 1 nM of iron is added (and consumed), assuming it is indeed the limiting nutrient. b. Would this change in total CO2 affect the alkalinity of the surface ocean? Why/why not? c. How much would the pH of the surface change following this primary production (assuming no respiration/gas exchange)? Use pCO2 = 420 ppm and total alkalinity = 2.2 mM to start your calculations.

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106CO2 + 50 SiO, + 16HNO, + H,PO, + 0.001FE + 122H,O →
(CH,0),06(SiO,)so(NH3),e(H3PO,)Feo.001 + 13802
a. Calculate the change in (total) CO, in the ocean surface mixed (Temp = 25C, Salinity =
35 ppt) layer if 1 nM of iron is added (and consumed), assuming it is indeed the limiting
nutrient.
%3D
b. Would this change in total CO, affect the alkalinity of the surface ocean? Why/why not?
c. How much would the pH of the surface change following this primary production
(assuming no respiration/gas exchange)? Use pCO2 = 420 ppm and total alkalinity = 2.2
mM to start your calculations.
%3D
Transcribed Image Text:106CO2 + 50 SiO, + 16HNO, + H,PO, + 0.001FE + 122H,O → (CH,0),06(SiO,)so(NH3),e(H3PO,)Feo.001 + 13802 a. Calculate the change in (total) CO, in the ocean surface mixed (Temp = 25C, Salinity = 35 ppt) layer if 1 nM of iron is added (and consumed), assuming it is indeed the limiting nutrient. %3D b. Would this change in total CO, affect the alkalinity of the surface ocean? Why/why not? c. How much would the pH of the surface change following this primary production (assuming no respiration/gas exchange)? Use pCO2 = 420 ppm and total alkalinity = 2.2 mM to start your calculations. %3D
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