Oceanic Carbon Cycle Upwelling brings nutrients (e.g. PO 4 ) to euphotic zone Photosynthesis...
-
date post
21-Dec-2015 -
Category
Documents
-
view
240 -
download
5
Transcript of Oceanic Carbon Cycle Upwelling brings nutrients (e.g. PO 4 ) to euphotic zone Photosynthesis...
- Slide 1
- Slide 2
- Oceanic Carbon Cycle Upwelling brings nutrients (e.g. PO 4 ) to euphotic zone Photosynthesis (Dissolved Inorg Particulate Organic Matter) Recycling and consumption Sinking of particulate matter Remineralization (POM dissolved inorganic forms) S. Doney
- Slide 3
- Marine Productivity Upwelling brings from below the mixed layer: Nutrients and DIC increase pCO 2 Cold water decrease pCO 2 Chavez et al.
- Slide 4
- DIC = CO 2 + HCO 3 - + CO 3 = 1-2 % 90% CO 2 DIC, NO3 depth atm remineralization photosyn From the Atmospheres Perspective: 90 Pg C/yr
- Slide 5
- Terrestrial Carbon Cycle Growth, mortality, decay Population: {ages} Photosynthesis (climate, CO 2, soil H 2 O, resource limitation) Decay (T, soil H 2 O,..) 120 PgC/yr60 1200 PgC 800 PgC
- Slide 6
- Impact on Atmospheric CO 2 Photosynthesis Respiration JanDec From Atm To Atm CO 2 Flux Seasonal asynchrony between photosynthesis and decomposition net fluxes of CO 2 to and from atm seasonal cycle of CO 2 in atm Annual imbalance carbon source/sink
- Slide 7
- NOAA Observatories South Pole American Samoa MaunaLoa Pt Barrow, AK
- Slide 8
- NOAA-CMDL ~ 100 sites at remote marine locations Long-term increase Seasonal cycle N-S gradient Atm CO 2 measurements
- Slide 9
- Atmospheric CO 2 Budget Atmospheric Increase Fossil Fuel Emissions Land and Ocean Sinks Land & ocean sinks ~ 50% of FF emission sensitive to climate perturbations
- Slide 10
- Total CO 2 Emission: 1997 USA China Russian Federation JapanIndia Germany UK Canada
- Slide 11
- Amazon-fishbone
- Slide 12
- PerCapita CO 2 Emission: 1997
- Slide 13
- Depletion of Atm Oxygen: Burning of Fossil Fuels long term decrease Decomposition of Organic Carbon seasonal cycle
- Slide 14
- Vostok a station on Antarctica: Analysis of ice and gas bubbles trapped in ice yields past climate history of last 460,000 years Temperature Departure (K)
- Slide 15
- Slide 16
- Annual GHG Emissions per Vehicle
- Slide 17