They happily convert carbon compounds in their food to carbon dioxide, and also to very substantial quantities of methane, which is much worse than carbon
dioxide as a greenhouse gas.
This rate of sea - level rise is expected to accelerate as the melting of the ice sheets and ocean heat content increases
as greenhouse gas concentrations rise.
The observed warming will be irreversible for many years into the future, and even larger temperature increases will occur
as greenhouse gases continue to accumulate in the atmosphere.
But when the land is converted for agriculture, the plants are cut down, burned, or processed, and the stored carbon is eventually released back into the
atmosphere as greenhouse gases.
But it remains uncertain, in particular, how the fraction of sunlight reflected by clouds will
change as greenhouse gas concentrations rise.
They claimed a positive feedback occurred as follows: CO2 increases temperature, which increases evaporation and increased water
vapor as a greenhouse gas causes more temperature increase.
As greenhouse gases cause global temperatures to rise, however, sharks are once again swimming in oceans that are warmer and more acidic, forcing them to adapt to their new environment.
Changing methane's relative importance
as a greenhouse gas does little to change the overall outcome of climate change projections.
That's a huge boon to humanity, because the more carbon dioxide a landscape can store, the less will be
left as a greenhouse gas that drives planetary warming.
However, all models indicate that the ice extent should
decrease as greenhouse gases in the atmosphere increase further later in this century.
The results suggest that the current hiatus is a normal instance of internal climate variability, and that long - term warming is likely to
resume as greenhouse gas concentrations continue to increase.
It has particular significance because ozone in the lower atmosphere
acts as a greenhouse gas and its destruction also leads to the removal of the third most abundant greenhouse gas; methane.
In combination, these factors could be removing nearly 54 million tons of carbon from the forest each year, introduced into the
atmosphere as greenhouse gases.