Nature Water,
Journal Year:
2023,
Volume and Issue:
1(1), P. 60 - 73
Published: Jan. 19, 2023
Abstract
Known
locally
as
the
water
mountain,
for
millennia
Japan’s
iconic
Mt
Fuji
has
provided
safe
drinking
to
millions
of
people
via
a
vast
network
groundwater
and
freshwater
springs.
Groundwater,
which
is
recharged
at
high
elevations,
flows
down
Fuji’s
flanks
within
three
basaltic
aquifers,
ultimately
forming
countless
pristine
springs
among
foothills.
Here
we
challenge
current
conceptual
model
being
simple
system
laminar
flow
with
little
no
vertical
exchange
between
its
aquifers.
This
contrasts
strongly
extreme
tectonic
instability
due
unique
location
on
top
only
known
continental
trench–trench–trench
triple
junction,
complex
geology
unusual
microbial
spring
communities.
On
basis
combination
environmental
DNA,
vanadium
helium
tracers,
provide
evidence
prevailing
deep
circulation
previously
unknown
contribution
The
most
substantial
upwelling
been
found
along
tectonically
active
region,
Fujikawa-kako
Fault
Zone.
Our
findings
broaden
hydrogeological
understanding
demonstrate
potential
combining
on-site
noble
gas
trace
element
analyses
science.
Atmospheric chemistry and physics,
Journal Year:
2022,
Volume and Issue:
22(4), P. 2525 - 2552
Published: Feb. 24, 2022
Abstract.
Carbonyl
sulfide
(COS),
a
trace
gas
showing
striking
similarity
to
CO2
in
terms
of
biochemical
diffusion
pathway
into
leaves,
has
been
recognized
as
promising
indicator
the
plant
gross
primary
production
(GPP),
amount
carbon
dioxide
that
is
absorbed
through
photosynthesis
by
terrestrial
ecosystems.
However,
large
uncertainties
about
other
components
its
atmospheric
budget
prevent
us
from
directly
relating
COS
measurements
GPP.
The
largest
uncertainty
comes
closure
budget,
with
source
component
missing.
Here,
we
explore
benefit
assimilating
both
and
LMDz
transport
model
obtain
consistent
information
on
GPP,
respiration
budget.
To
this
end,
develop
an
analytical
inverse
system
optimizes
biospheric
fluxes
for
15
functional
types
(PFTs)
defined
ORCHIDEE
global
land
surface
model.
Plant
uptake
parameterized
linear
function
GPP
leaf
relative
(LRU),
which
ratio
deposition
velocities
plants.
A
possible
scenario
period
2008–2019
leads
sink
800
GgS
yr−1,
higher
absorption
high
latitudes
oceanic
emissions
between
400
600
yr−1
most
located
tropics.
As
increases
few
GtC
without
modifying
compared
used
prior.
In
contrast,
tropics
tends
weaken
optimized
budgets
have
evaluated
against
independent
over
North
America,
Pacific
Ocean,
at
three
sites
Japan
one
site
France.
Overall,
posterior
concentrations
are
better
agreement
retrievals
250
hPa
MIPAS
satellite
airborne
made
America
Ocean.
seems
rightly
corrected
underestimated
latitudes.
change
seasonality
disagrees
solar-induced
fluorescence
(SIF)
data.
decline
Amazon
driven
inversion
also
hPa,
highlighting
lack
observational
constraints
region.
Moreover,
comparison
France
suggests
misplaced
sources
prior
anthropogenic
inventory,
emphasizing
need
improved
inventory
partition
continental
Asia
Europe.
Hydrological Processes,
Journal Year:
2022,
Volume and Issue:
36(8)
Published: July 26, 2022
Abstract
Isotopic
information
from
81
snowpits
was
collected
over
a
5‐year
period
in
large,
Colorado
watershed.
Data
spans
gradients
elevation,
aspect,
vegetation,
and
seasonal
climate.
They
are
combined
with
overlapping
campaigns
for
water
isotopes
precipitation
snowmelt,
land‐surface
model
detailed
estimates
of
snowfall
climate
at
sample
locations.
Snowfall
isotopic
inputs,
describe
the
majority
δ
18
O
snowpack
variability.
Aspect
is
secondary
control,
slightly
more
enriched
conditions
on
east
north
facing
slopes.
This
attributed
to
preservation
seasonally
vapour
loss
early
winter.
Sublimation,
expressed
by
decreases
d‐excess
comparison
contributions,
increases
low
elevation
when
temperature
solar
radiation
high.
At
peak
snow
accumulation,
post‐depositional
fractionation
appears
occur
top
25
±
14%
due
melt‐freeze
redistribution
lighter
deeper
into
atmosphere
during
intermittent
periods
relative
humidity
high
windspeed.
Relative
depth
winter
daytime
temperatures
low.
Once
isothermal,
homogenization
enrichment
observed
initial
snowmelt
isotopically
depleted
enriching
time.
The
rate
increase
(d‐excess
decrease)
0.02‰
per
day
100‐m
loss.
data
suggests
dictates
evolution
controlling
persistence
(or
absence),
lapse
rates
ratio
energy
availability.
Hydrologic
tracer
studies
using
stable
basins
large
topographic
relief
will
require
adjustment
these
elevational
controls
properly
constrain
stream
sourcing
snowmelt.
Nature Water,
Journal Year:
2023,
Volume and Issue:
1(1), P. 60 - 73
Published: Jan. 19, 2023
Abstract
Known
locally
as
the
water
mountain,
for
millennia
Japan’s
iconic
Mt
Fuji
has
provided
safe
drinking
to
millions
of
people
via
a
vast
network
groundwater
and
freshwater
springs.
Groundwater,
which
is
recharged
at
high
elevations,
flows
down
Fuji’s
flanks
within
three
basaltic
aquifers,
ultimately
forming
countless
pristine
springs
among
foothills.
Here
we
challenge
current
conceptual
model
being
simple
system
laminar
flow
with
little
no
vertical
exchange
between
its
aquifers.
This
contrasts
strongly
extreme
tectonic
instability
due
unique
location
on
top
only
known
continental
trench–trench–trench
triple
junction,
complex
geology
unusual
microbial
spring
communities.
On
basis
combination
environmental
DNA,
vanadium
helium
tracers,
provide
evidence
prevailing
deep
circulation
previously
unknown
contribution
The
most
substantial
upwelling
been
found
along
tectonically
active
region,
Fujikawa-kako
Fault
Zone.
Our
findings
broaden
hydrogeological
understanding
demonstrate
potential
combining
on-site
noble
gas
trace
element
analyses
science.
