model development towards incorporating 3-d subsurface ......gautam bisht1, richard t. mills1,...
TRANSCRIPT
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Introduction Models Coupling Results Future work
Model Development Towards Incorporating 3-DSubsurface Hydrologic Processes within theCommunity Land Surface Model (CLM):
Coupling PFLOTRAN and CLM
Gautam Bisht1, Richard T. Mills1, Forrest M. Hoffman1, andPeter E. Thornton1
1Oak Ridge National Laboratory
CCSM Land Model Working Group15, March, 2011
Gautam Bisht PFLOTRAN - CLM Coupling 1
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Introduction Models Coupling Results Future work
Motivation
Soil moisture plays an important role in Land-Atmosphereinteraction
FIG. 10. (top) Average of !P(S) " !P(W ) across all 12 models and (bottom) average of !P(S) " !P(W ) across the 8 models that,at a given grid cell, reproduce most closely the observed mean June–August (JJA) precipitation.
AUGUST 2006 K O S T E R E T A L . 605
Fig 10 live 4/C
Koster et al., 2006, J. HydroMetero.
Gautam Bisht PFLOTRAN - CLM Coupling 2
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Introduction Models Coupling Results Future work
Motivation
GRACE satellite: Groundwater depletion over India
Rodell et al. (2009), Nature
Time period: Aug, 2002 to Oct, 2008Depletion rate: 1 m per 3 years
Gautam Bisht PFLOTRAN - CLM Coupling 3
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Introduction Models Coupling Results Future work
Objective
Improve subsurface hydrologic processes:
Lateral transport of water
Unified treatment of unsaturated and saturated zone dynamics
Gautam Bisht PFLOTRAN - CLM Coupling 4
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Introduction Models Coupling Results Future work
CLM
1) Hydrologic cycle 3) Biogeochemistry2) Biogeophysics 4) Dynamic Vegetation
PFLOTRAN will be replacing this part within CLM
Gautam Bisht PFLOTRAN - CLM Coupling 5
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Introduction Models Coupling Results Future work
PFLOTRAN
Models Multiscale-Multiphase-Multicomponent Subsurface ReactiveFlows
Funded by SciDAC-2
PI: Peter C. Lichtner (LANL)
Development team: LANL, PNNL, ORNL, ANL, UIUC, Univ. ofUtah
http://www.nccs.gov/wp-content/uploads/2009/06/300yrs.pnghttp://www.pnl.gov/science/images/highlights/computing/uvi.jpg
Gautam Bisht PFLOTRAN - CLM Coupling 6
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Introduction Models Coupling Results Future work
PFLOTRAN
Various Modes:
Richards
Multiphase
Multiple immiscible phases
Two phase liquid water-gas flow
Thermal-Hydrologic-Chemical
Reactive Transport
Written in Fortran 90, with a modular object-orientedapproach
Fully implicit time-stepping
Uses Portable, Extensible Toolkit for Scientific Computation(PETSc)
Gautam Bisht PFLOTRAN - CLM Coupling 7
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Introduction Models Coupling Results Future work
PFLOTRAN
0
500
1000
1500
2000
2500
4092 8184 16380 32760 65532 131064
Tim
e in
sec
onds
Number of processor cores
PFLOTRAN on Cray XT5 and IBM BlueGene/P: 1 billion DoF problem, Transport stage
On Cray XT5On IBM BlueGene/P
Adaptive Mesh RefinementMimetic Finite Difference
PFLOTRAN is one of the six Early Science Applications for OLCF-3
Gautam Bisht PFLOTRAN - CLM Coupling 8
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Introduction Models Coupling Results Future work
Governing Equation
Porosity
Poorly Sorted Fracture
IntragranularWell Sorted
Decreased Porosity
Dissolution
by Diogenesis
Diogenesis – The formation of rock; pores fill up with precipitations of mineral and reduce porosity
1.72, Groundwater Hydrology Lecture 2 Prof. Charles Harvey Page 4 of 10
Φ - Porositys - Saturation
q(x+δx)q(x)
q(z)
q(z+δz)
Saturation
Dep
th (z
)
1.00.0Unsaturatedzone
Saturated zone
q(y)
q(y+δy)Mass conservation
CLM PFLOTRAN
∂∂t (θ) = −∇ · (q) + qw
∂∂t (ρφs) = −∇ · (ρu) + Qw
q = −K (ψ)∇(ψ + z) u = −(κκr (s)µ
)∇(P + ρgz)
θ = φs K = ρgκµ P = ρgψ
Gautam Bisht PFLOTRAN - CLM Coupling 9
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Introduction Models Coupling Results Future work
CLM : Conceptual Domain
Gautam Bisht PFLOTRAN - CLM Coupling 10
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Introduction Models Coupling Results Future work
PFLOTRAN - CLM: Conceptual Domain
Gautam Bisht PFLOTRAN - CLM Coupling 11
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Introduction Models Coupling Results Future work
PFLOTRAN - CLM: Soil properties initialized by CLM
Organic Percolating
OrganicNon-
PercolatingMineral
x
z
Computation of Kz
Gautam Bisht PFLOTRAN - CLM Coupling 12
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Introduction Models Coupling Results Future work
PFLOTRAN - CLM: Soil properties initialized by CLM
Organic Percolating
OrganicNon-
PercolatingMineral
x
z
Computation of Kz
Organic Percolating
OrganicNon-
PercolatingMineral
Computation of Kx & Ky
Gautam Bisht PFLOTRAN - CLM Coupling 12
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Introduction Models Coupling Results Future work
PFLOTRAN - CLM: Initial conditions
0.3Saturation Pressure
1 m
Dep
th
Dep
th
Gautam Bisht PFLOTRAN - CLM Coupling 13
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Introduction Models Coupling Results Future work
PFLOTRAN - CLM: Time-stepping
CLM
PFLOTRAN
T T+δt
Gautam Bisht PFLOTRAN - CLM Coupling 14
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Introduction Models Coupling Results Future work
PFLOTRAN - CLM: Time-stepping
PFLOTRAN
T T+δt
CLMCLM
Gautam Bisht PFLOTRAN - CLM Coupling 14
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Introduction Models Coupling Results Future work
PFLOTRAN - CLM: Time-stepping
PFLOTRAN
T T+δt
CLMCLM
Gautam Bisht PFLOTRAN - CLM Coupling 14
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Introduction Models Coupling Results Future work
PFLOTRAN - CLM: Time-stepping
PFLOTRAN
T T+δt
PFLOTRAN
Implicit time stepping
CLMCLM
Gautam Bisht PFLOTRAN - CLM Coupling 14
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Introduction Models Coupling Results Future work
PFLOTRAN - CLM: Time-stepping
T T+δt
PFLOTRAN
CLMCLM
Gautam Bisht PFLOTRAN - CLM Coupling 14
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Introduction Models Coupling Results Future work
PFLOTRAN - CLM: Time-stepping
T T+δt
PFLOTRAN
CLMCLM
Gautam Bisht PFLOTRAN - CLM Coupling 14
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Introduction Models Coupling Results Future work
Experiment-1: Sanity check of coupling
CLM
PFLOTRAN PFLOTRAN
One-way forced PFLOTRAN
Offline PFLOTRAN
Gautam Bisht PFLOTRAN - CLM Coupling 15
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Introduction Models Coupling Results Future work
Experiment-1: Sanity check of coupling
0.5 0.6 0.7 0.8 0.9
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Saturation
Soi
l Dep
th [m
]
Time: t0
PFCLM−PF
0.5 0.6 0.7 0.8 0.9
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Saturation
Soi
l Dep
th [m
]
Time: t0
PFCLM−PF
Gautam Bisht PFLOTRAN - CLM Coupling 16
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Introduction Models Coupling Results Future work
Experiment-1: Sanity check of coupling
0.5 0.6 0.7 0.8 0.9
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Saturation
Soi
l Dep
th [m
]
Time: t1
0.5 0.6 0.7 0.8 0.9
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Saturation
Soi
l Dep
th [m
]
Time: t1
PFCLM−PF
PFCLM−PF
Gautam Bisht PFLOTRAN - CLM Coupling 16
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Introduction Models Coupling Results Future work
Experiment-1: Sanity check of coupling
0.5 0.6 0.7 0.8 0.9
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Saturation
Soi
l Dep
th [m
]
Time: t2
0.5 0.6 0.7 0.8 0.9
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Saturation
Soi
l Dep
th [m
]
Time: t2
PFCLM−PF
PFCLM−PF
Gautam Bisht PFLOTRAN - CLM Coupling 16
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Introduction Models Coupling Results Future work
Experiment-1: Sanity check of coupling
0.5 0.6 0.7 0.8 0.9
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Saturation
Soi
l Dep
th [m
]
Time: t3
0.5 0.6 0.7 0.8 0.9
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Saturation
Soi
l Dep
th [m
]
Time: t3
PFCLM−PF
PFCLM−PF
Gautam Bisht PFLOTRAN - CLM Coupling 16
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Introduction Models Coupling Results Future work
Experiment-1: Sanity check of coupling
0.5 0.6 0.7 0.8 0.9
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Saturation
Soi
l Dep
th [m
]
Time: t4
0.5 0.6 0.7 0.8 0.9
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Saturation
Soi
l Dep
th [m
]
Time: t4
PFCLM−PF
PFCLM−PF
Gautam Bisht PFLOTRAN - CLM Coupling 16
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Introduction Models Coupling Results Future work
Experiment-2: Single soil column simulation
PFLOTRAN
CLMCLM
CLM alone Two-way coupledCLM-PFLOTRAN
Experiment setup similar to Maxwell and Miller (2005, J. ofHydroMeterology) : Rain for 14 days
Gautam Bisht PFLOTRAN - CLM Coupling 17
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Introduction Models Coupling Results Future work
Experiment-2: Single soil column simulation
10−2
10−1
100
101
102
0
0.5
1
1.5
2
2.5x 10
−3 Rain[m
m/s
ec]
10−2
10−1
100
101
102
0
50
100
150
200Shortwave Radiation
[W/s
ec−2
]
Time [days]
Gautam Bisht PFLOTRAN - CLM Coupling 18
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Introduction Models Coupling Results Future work
Experiment-2: Single soil column simulation
10−2
10−1
100
101
102
0
0.5
1
1.5
2
2.5x 10
−3 Overland[m
m/s
ec]
CLM CLM−PFLOTRAN
10−2
10−1
100
101
102
0
0.5
1
1.5
2
2.5
3x 10
−3 Infiltration
[mm
/sec
]
CLM CLM−PFLOTRAN
Gautam Bisht PFLOTRAN - CLM Coupling 18
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Introduction Models Coupling Results Future work
Experiment-2: Single soil column simulation
Gautam Bisht PFLOTRAN - CLM Coupling 18
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Introduction Models Coupling Results Future work
Development of coupling with HPC in mind
0
1
2
3
4
5
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9
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048
121620242832
159
131721252933
12
13
14
15
16
17
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19
20
21
22
23
26
10141822263034
3711151923273135
36 37 38 3940 41 42 4344 45 46 47
CLM domain PFLOTRAN domain
Processor - 0Processor - 1Processor - 2
Gautam Bisht PFLOTRAN - CLM Coupling 19
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Introduction Models Coupling Results Future work
Development of coupling with HPC in mind
0
1
2
3
4
5
6
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8
9
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16
17
18
19
20
21
22
23
048
121620242832
159
131721252933
26
10141822263034
3711151923273135
36 37 38 3940 41 42 4344 45 46 47
CLM domain PFLOTRAN domain
Processor - 0Processor - 1Processor - 2
Gautam Bisht PFLOTRAN - CLM Coupling 19
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Introduction Models Coupling Results Future work
Development of coupling with HPC in mind
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
048
121620242832
159
131721252933
26
10141822263034
3711151923273135
36 37 38 3940 41 42 4344 45 46 47
CLM domain PFLOTRAN domain
Processor - 0Processor - 1Processor - 2
Gautam Bisht PFLOTRAN - CLM Coupling 19
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Introduction Models Coupling Results Future work
Next steps
Restart capability
Map projection
Application of the coupled model to a study site
Nutrient transport
Thermal Hydrologic transport
Gautam Bisht PFLOTRAN - CLM Coupling 20
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Introduction Models Coupling Results Future work
Acknowledgements
DOE ASCR
PFLOTRAN team
Daniel Ricciuto
Gautam Bisht PFLOTRAN - CLM Coupling 21
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Introduction Models Coupling Results Future work
Questions?
Gautam Bisht : [email protected]
Richard Mills : [email protected]
Forrest Hoffman : [email protected]
Peter Thornton : [email protected]
Gautam Bisht PFLOTRAN - CLM Coupling 22