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altered O
by O
the O
combination O
of O
multiple O
satellite O
sensors O
and O
their O
degradation O
, O
or O
by O
the O
assimilation O
of O
new O
observations O
at O
a O
certain O
period O
in O
the O
case O
of O
reanalysis O
. O
By O
contrast O
, O
ERA5 B-climate-datasets
- I-climate-datasets
Land I-climate-datasets
is O
more O
stable O
due O
to O
the O
lack O
of O
data O
assimilation O
, O
but O
at O
expense O
of O
worsening O
its O
accuracy O
despite O
having O
a O
finer O
spatial O
resolution O
. O
The O
magnitude O
of O
most O
of O
these O
artificial O
trends O
/ O
discontinuities O
is O
larger O
than O
actual O
snow B-climate-nature
cover I-climate-nature
trends O
and O
Global B-climate-organizations
Climate I-climate-organizations
Observing I-climate-organizations
System I-climate-organizations
( O
GCOS B-climate-organizations
) O
stability O
requirements O
. O
-DOCSTART- -X- O O97e56b32c71e1ce2cce7da30f448107c
We O
assessed O
the O
performance O
of O
the O
resulting O