The findings will help scientists disentangle inputs and outputs in places like the Amazon rainforest, where there are both big emissions from deforestation and big
sinks from photosynthesis.
Not exact matches
Forests remove carbon
from the air during
photosynthesis and store it in wood and roots, making these forests what scientists call carbon
sinks.
Because carbon cycle processes such as
photosynthesis fractionate the heavy isotope 13C
from the lighter 12C, isotopic analysis can usually be used to «trace» sources and
sinks of carbon.
Not so much by direct photolysis of water vapor (not generally a lot of that in the stratosphere), but
from CH4, which could build up in a nearly oxygen - free atmosphere, and being largerly of biotic origin, with the H coming
from photosynthesis (releasing O); O2 buildup itself was delayed because of geologic O2
sinks (in particular, the conversion of ferrous Fe (naturally present in the crust and mantle and which can dissolve in the oceans) to ferric Fe (precipitates out of the water, the source of banded - iron formations, which humans have used to get Fe).
Not only are they one of the most important carbon
sinks, storing more carbon than both the atmosphere and the world's oil reserves, they also constantly remove carbon
from the atmosphere through
photosynthesis, which converts atmospheric carbon to organic matter.
The main natural
sinks are the oceans and plants and other organisms that use
photosynthesis to remove carbon
from the atmosphere by incorporating it into biomass.
where Ea represents annual carbon emissions
from anthropogenic sources (fossil fuel use and land use change), En represents the carbon emissions
from all natural sources (the oceans, soil respiration, volcanos etc.) and Un represent the uptake of carbon by all natural carbon
sinks (oceans,
photosynthesis, etc.).
Is there any likelihood a bloom of plankton (
from a freshwater pulse, or fallout of a dust cloud full of minerals, for example) would change the temperature of the surface water (change the reflectivity, I suppose, or change how much is absorbed by making more complicated molecules for
photosynthesis)-- sufficient to make the water mass density change, affecting whether it
sinks or not?