G163S10L19_salt_and_abyssal_recipes

G163S10L19_salt_and_ - Frombefore, massseawater(S=1000*kgsalts/kgSW seaiceformation TheGlobalSalinityB

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The Global Salinity Budget From before, salinity is mass “salts” per  mass seawater  (S = 1000 * kg “salts” / kg SW) There is a riverine source …BUT… salinity  of the ocean is nearly constant sea ice formation Useful for budgeting water mass 
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The Global Salinity Budget 3.6x10 12  kg salts are added to ocean each  year from rivers Mass of the oceans is 1.4x10 21  kg  IF only riverine inputs, increase in salinity is  S  ~ 1000 * 3.6x10 12  kg/y / 1.4x10 21  kg = 2.6x10 -6  ppt per year Undetectable, but not geologically… 
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The Global Salinity Budget In reality, loss of salts in sediments is  thought to balance the riverine input Salinity is therefore constant (at least on  oceanographic time scales)
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Global Salinity Distribution
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The Global Salinity Budget Salinity follows E-P to high degree through  tropics and subtropics Degree of correspondence falls off towards  the poles (sea ice…) Atlantic salinities are much higher than  Pacific or Indian Oceans
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1 Sverdrup = 10 6  m 3  s -1 Why is the Atlantic so salty?
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Material Budgets
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Water Mass Budgeting Volume fluxes, V 1 , are determined from mean  velocities and cross-sectional areas   V 1  = u 1  A 1 Mass fluxes, M 1 , are determined from mean  velocities and cross-sectional areas  
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This note was uploaded on 12/28/2011 for the course GEOG 163 taught by Professor Siegel,d during the Fall '08 term at UCSB.

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G163S10L19_salt_and_ - Frombefore, massseawater(S=1000*kgsalts/kgSW seaiceformation TheGlobalSalinityB

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