Yu, T., Sun, R., Xiao, Z.,
Zhang, Q., Liu, G., Cui, T.
and Wang, J.
2018
Estimation of global
vegetation productivity
from Global Land Surface
Satellite data.
Remote Sensing 10: 327,
doi:10.3390/rs10020327.NOTE:
NOTE:
Various organizations
claim that the world's
ecosystems are
collapsing because
of "climate change".
SUMMARY:
Not true.
Just the opposite !
Enhancements in
GPP
(gross primary
productivity), &
NPP
(net primary
productivity),
prove the health
of the terrestrial
biosphere has been
improving over time.
Despite
wildfires,
disease,
pest outbreaks,
deforestation,
and allegedly
unprecedented
climate changes
in temperature
and precipitation,
global terrestrial
GPP and NPP
are not declining.
Their increase
is primarily caused
by growth-related
benefits of Earth's
rising atmospheric
CO2 concentration.
The authors report
GPP and NPP
values in 2012
were higher than
observed in 2004
"at all land cover types."
DETAILS:
Yu et al. (2018)
examined the
recent trends in
ecosystem primary
productivity, using
MODIS satellite data.
The team
of seven
researchers
analyzed the
spatial and
temporal variation
in GPP and NPP,
over the period
2004 to 2012,
while alarmists
claimed Earth
experienced
unprecedented
global warming.
The chart below:
GPP and NPP
values for the
terrestrial biosphere,
in both 2004 and 2012.
Total GPP
increased
from 108.84 Pg C
in 2004
to 119.73 Pg C
in 2012,
representing
a linear increase
of 1.25% per year,
or 10% between
2004 and 2012.
Global NPP
increased
from 61.15 Pg C
in 2004
to 69.53 Pg C
in 2012,
rising 1.7% per year,
for a total increase
of 13.7% in the
eight year period.
