nasa's land information system as a testbed for jcsda partners and investigators
DESCRIPTION
NASA's Land Information System as a Testbed for JCSDA Partners and Investigators Christa D. Peters-Lidard, Ph.D. Physical Scientist and Head, Hydrological Sciences Branch NASA/ Goddard Space Flight Center(GSFC), Code 614.3, Greenbelt, MD 20771 [email protected], 301-614-5811 - PowerPoint PPT PresentationTRANSCRIPT
NASA's Land Information System as a Testbed for JCSDA Partners and
Investigators
Christa D. Peters-Lidard, Ph.D.Physical Scientist and
Head, Hydrological Sciences BranchNASA/ Goddard Space Flight Center(GSFC), Code 614.3,
Greenbelt, MD [email protected], 301-614-5811
http://lis.gsfc.nasa.gov
Acknowledgements
LIS was originally funded under NASA ESTO/CT CAN-00-OES-01, with additional support from NASA ESTO/AIST NRA-02-OES-04, and AFWA Award No: NVSHAX05680448
C. D. Peters-Lidard1, P. R. Houser1,2, S. V. Kumar1, Y. Tian1, J. Geiger1, M. Garcia1 , S. Olden1, L. Lighty1, J. L. Eastman1, J. Sheffield3, E. F. Wood3,
P. Dirmeyer4, B. Doty4, J. Adams4, K. Mitchell5, J. Meng5, H. Wei6, J. Eylander7
1NASA, Goddard Space Flight CenterHydrological Sciences Branch, Code 614.3, Greenbelt, MD
2George Mason University, Climate Dynamics Program and Center for Research in Environment and Water
3Department of Civil and Environmental EngineeringPrinceton University, Princeton, NJ
4Center for Ocean Land Atmosphere Studies (COLA)Calverton, MD
5NCEP Environmental Modeling CenterNOAA/NWS, Camp Springs, MD
6Air Force Weather AgencyAir & Space Sciences Directorate, Offut AFB, NE
• LIS Background• LIS Uncoupled Benchmarking
– CEOP Sites– NOAA/NCEP– AFWA/AGRMET
• LIS/WRF/GCE Coupled Benchmarking– IHOP
• Ongoing Work and Future Directions
Outline
Topography,Soils
Land Cover, Vegetation Properties
Meteorological Forecasts,
Analyses, and/or Observations
Snow Soil MoistureTemperature
Land Surface Models
Data Assimilation Modules
Soil Moisture &
Temperature
EvaporationSensible Heat
Flux
Runoff
SnowpackProperties
Inputs OutputsPhysics Applications
LIS Background
Weather/Climate
Water Resources
HomelandSecurity
Military Ops
Natural Hazards
NNorth American orth American LDASLDAS1/8 Degree Resolution1/8 Degree ResolutionMitchell et al., JGR, 2004Mitchell et al., JGR, 2004
GGlobal lobal LDASLDAS1/4 Degree Resolution1/4 Degree Resolution
LLandand I Informationnformation S System (http://lis.gsfc.nasa.gov)ystem (http://lis.gsfc.nasa.gov)
Multi-Resolution Ensemble LDASMulti-Resolution Ensemble LDAS
LIS Heritage: NLDAS and GLDASLIS Heritage: NLDAS and GLDAS
Rodell et al., BAMS, 2004Rodell et al., BAMS, 2004
Kumar et al., EMS, 2006Kumar et al., EMS, 2006
25km
5km 1km
The Value of 1km Land Modeling: The Value of 1km Land Modeling: Exploit EOS and NPOESSExploit EOS and NPOESS
CEOP Benchmarking at Reference Sites
• CLM/Noah/Mosaic ensemble energy fluxes• All CEOP reference sites EOP-1 July 1-Sept 30, 2001
0
20
40
60
80
100
120
RMSE (W/m2)
Swnet Lwnet Qle Qh Qg
Energy Fluxes - Ensemble of Land Surface Models
0.25 deg
1km
CEOP BenchmarkingCEOP Benchmarking
CEOP Flux aggregation: Bondville, IL
Initial Benchmarking at NCEPAverage Diurnal Cycles, March 2003
•LIS with experimental mode of GFS on the gaussian horizontal grid of T62•Forcing: NCEP Global Reanalysis II, AGRMET radiation and CMAP precipitation. •30% more efficient in computing time
CONUS Average Europe Average
Sen
sib
le H
eat
Sen
sib
le H
eat
Gro
und
Hea
t
Gro
und
Hea
t
Late
nt H
eat
Late
nt H
eat
Net
Rad
iatio
n
Net
Rad
iatio
n
NCEP Benchmarking with LIS: 25-year T126 Illinois 2-meter Soil Moisture [mm] 1985-2004
Total
Anomaly
Vtype 12
Climatology
Source: Jesse Meng
AFWA/AGRMET Benchmarking
• Benchmark period: 02 December 2005- 28 February, 2006
•Global Intercomparison Dates:
•02 December 2005
•21 December 2005
•20 January 2006
•28 February 2006
•Point Intercomparisons at Sample Locations:
•USA, Washington, DC, 38.85N 77.04W
•Iraq, Baghdad, 33.20N, 44.30E
•Pyongyang, North Korea, 39.03N, 125.78E
•Zimbabwe, Harare, 17.43S, 31.02E
AGRMET-LIS Global IntercomparisonDownward Shortwave (Wm-2)
21 December 2005, 1200UTC
3.1 Global Intercomparison(AGR-LIS): 10cm Soil Moisture
21 December 2005, 2100UTC
AGRMET-LIS Point Intercomparisons: Iraq, Baghdad
AGRMET-LIS Point Intercomparisons: Zimbabwe, Harare
Land Surface Models(LIS)
Ocean Models
Atmos. Models
(WRF/GCE/GFS/GEOS)
Coupled: LIS as an Earth Coupled: LIS as an Earth System Model Land System Model Land ComponentComponent
The Land Information System (LIS) and Weather Forecasting
LSM Initial Conditions
WRF
LSM Physics(Noah, Catchment,
CLM, VIC, HYSSiB)
Coupled orForecast Mode
Uncoupled or Analysis Mode
Global, RegionalForecasts and (Re-)Analyses
Station Data
Satellite Products
ESMF
Central US, Southern Great Plains
Coupled LIS/WRF Case Study: May-June 2002 Coupled LIS/WRF Case Study: May-June 2002 International H2O Project (IHOP) International H2O Project (IHOP)
1. Radiation Coupling Experiments: June 12, 20022. IHOP Case Studies: June 12, 2002 and May-June 2002
WRF/ARW Model Setup
• 500x500 Horizontal Points at 1km ΔX• 47 Vertical Levels from 10m to 18km AGL• Lin et al microphysics (Rain, Ice, Graupel, Snow, Cloud
Water)• RRTM longwave, Dudhia Shortwave (Account for
different water phases)• NOAH LSM from the Land Information System (LIS)• Ingested North American Regional Reanalysis (32km
mesh size) into WRFSI to create initial and boundary meteorological conditions for a 24 hour integration at 3 hour intervals
WRF-LIS Precipitation vs. Radiation Coupling Time Step
X1=6 Seconds
X3=18 Seconds
X10=60 Seconds X100=600 SecondsTotal accumulated 24-hour precipitation (mm) for update frequencies at every (6
seconds), every 3 (18 seconds), every 10 (60 seconds), and every 100 (600 seconds) time
steps. Eastman et al., GRL, 2006, submitted.
Rain Rate PDF vs. Radiation Coupling Time Step
Precipitation Probability Distribution Function (%)
0
5
10
15
20
25
30
35
0.0to
0.5
0.5to
1.0
1.0to
1.5
1.5to
2.0
2.0to
2.5
2.5to
3.0
3.0to
3.5
3.5to
4.0
4.0to
4.5
4.5to
5.0
5.0to
5.5
5.5to
6.0
6.0to
6.5
6.5tp
7.0
7.0to
7.5
Rate (cm/hr)
%
Every 1 Every 3 Every 10 Every 100
Computational Overhead of Increased Radiation Updates
Cloudy Day - Scaling with different radiation timesteps
0:00:00
2:24:00
4:48:00
7:12:00
9:36:00
12:00:00
14:24:00
16:48:00
1 3 10 100
Radiation Timestep (seconds)
CP
U T
ime
(hh
:mm
:ss)
8 processors
16 processors
32 processors
64 processors
WRFSI Initial Soil State LIS Initial Soil State (NLDAS+STATSGO)Soil Temperature (K)
Soil Moisture (kg/kg)
WRF-LIS forecast Using default soil moisture
initialization (WRFSI)
WRF-LIS forecast Using LIS soil moisture with 10
year uncoupled spinup using StageII
precipitation inputs
Soil Moisture Impact on Precipitation ForecastIHOP, June 12-13, 2002
24 Hour Accumulated Precipitation (mm)
Observed NOAA/NCEP Stage II
Radar+Gauge
Domain Integrated Precipitation versus Time
0.00E+00
5.00E+04
1.00E+05
1.50E+05
2.00E+05
2.50E+05
3.00E+05
3.50E+05
12:00
14:00
16:00
18:00
20:00
22:00 0:
002:
004:
006:
008:
0010
:00
Hour Starting on June12
Inte
gra
ted
Pre
cip
ita
tio
n (
mm
)
WRFSI GDAS NLDAS RADAR
Observed: Radar+Gauge
WRF/LIS Modeled using Radar+Gauge precipitation for LIS
uncoupled Spinup
WRF/LIS Modeled using NOAA Model precipitation (GDAS) for LIS
uncoupled Spinup
WRF/LIS Modeled using WRF Standard Initialization (WRFSI) w/o
LIS spinup
GDAS=Global Data Assimilation System (NOAA/National Centers for Environmental Prediction (NCEP))
Land Impact on Precipitation ForecastIHOP, June 12-13, 2002
Ongoing Work and Future Directions
• Ongoing– Continued work with AFWA on EnKF Support, Precipitation
enhancements, WRF Coupling (NCAR)– Collaboration with NCEP on NLDAS Phase 2, NLDAS-E– Collaboration with NOAA/OHD on SAC/Snow-17– Collaboration with GMAO on shared subsystems (L-ANA,
CATCH)
• Future– Coupling CRTM and MEM– Coupling to GFS/CFS and GEOS-5 via ESMF– Provide LIS testbed to all JCSDA land partners to facilitate R2O
OANAOcean analysis
GEOS-5 GCM STRUCTURE
AGCM
CAP HISTORY
RADIATION
COLUMN PHYSICS
SOLAR
IR
MOIST
TURB
SURFACE
CHEMLAKE
OCEAN SKIN
DYNAMICS
GWDFVCORE
(Ts,Fi...)
VEGDYNCATCH
ICELAND
SURFACE
DYNAMICS
Data AGCM
COUPLED
Ocean
Data OGCM
PoseidonOBIO
CICE OGCM
L-ANAEnKF
GEOS-5 ”Intermediate SCM” STRUCTURE
CAP HISTORY
G5-LIS COUPLER
COLUMN PHYSICS
TURB
SURFACE
VEGDYN
CATCH
LAND
L-ANAEnKF
LIS Data System
LIS Offline Forcing of G5 Components
LIS
CATCHL-ANAEnKF LIS Data System
CATCHCLM
GEOS-5 components
Queries a state instead
of a component
Each componen
t is self-consistent
Extensions to
perturbation component
Extensions to
perturbation component