- to
speak of
thousands or
millions of tonnes. Kilotonne, megatonne, and
gigatonne are more
usually used for the
energy of
nuclear explosions and
other events...
- (approximately 900
gigatonnes of
carbon — each ppm
corresponds to 2.13 Gt) and
dissolved in all
water bodies (approximately 36,000
gigatonnes of carbon). Carbon...
- of CO2 in the
atmosphere represents approximately 2.13
gigatonnes of carbon, or 7.82
gigatonnes of CO2. It was
pointed out in 2021 that "the
current rates...
-
those ecosystems.
Plants form
about 80% of the
world biom**** at
about 450
gigatonnes (4.4×1011 long tons; 5.0×1011
short tons) of carbon.
Numerous animals...
- The world's
forests contain about 606
gigatonnes of
living biom**** (above- and below-ground) and 59
gigatonnes of dead wood. The
total biom**** has decreased...
-
mantle has
roughly one
billion gigatonnes of
carbon (for comparison, the atmosphere-ocean
system has
about 44,000
gigatonnes).
Carbon has two
stable isotopes...
-
prevented an
average of 1.84
million air pollution-related
deaths and 64
gigatonnes of CO2-equivalent (GtCO2-eq)
greenhouse gas (GHG)
emissions that would...
-
marine sediments would be
exposed to oxidation. But 6,500–8,400
gigatonnes (1
gigatonne = 1012 kg) of
organic carbon would have to be
oxidized and returned...
- from
anthropogenic sources (left) into Earth's atmosphere, land, and
ocean sinks (right)
since the 1960s.
Units in
equivalent gigatonnes carbon per year....
-
Since the pre-industrial
period (year 1750) to 2019,
approximately 2390
Gigatonnes of CO2 (Gt CO2) has
already been
emitted globally.
Scientific estimations...
