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SAHRA
Phoenix
Albuquerque
Tucson
Sevilleta
PILPS San Pedro - SevilletaPILPS San Pedro - Sevilleta
Lucky HillsKendall
luis.bastidas usu.edu
PILPS Semi Arid ExperimentPILPS Semi Arid ExperimentPILPS Semi Arid ExperimentPILPS Semi Arid Experiment
USA
Arizona New Mexico
Phoenix
Albuquerque
Kendall
Lucky Hills
Tucson
Sevilleta
L. Bastidas H. Gupta, B. Nijssen W. Emmerich E. Small
Sponsors
SAHRA
luis.bastidas usu.edu
Sevilleta
San PedroLocationsLocationsLocationsLocations
SiteLongitude
WestLatitude
NorthElevation[m.a.s.l.]
Precipitation[mm/year]
Temperature[C]
Lucky HillsShrubland
11003’05’’ 3144’37” 1372 340 18.6
KendallGrassland
10956’28” 3144’10” 1526 340 19.3
TucsonShrub/cacti
11149’48” 3213’01” 730 305 20.2
Sevilleta Grassland
10643’30” 3420’30” 1730 270 17.2
SevilletaShrubland
10644’39” 3420’05” 1776 270 16.9
luis.bastidas usu.edu
Sevilleta
San Pedro
1996 1997 1998 1999 2000
1996 1997 1998 1999 2000
Forcings
Outputs
Spin up PeriodData Supplied
CalibrationPeriod
Data Supplied
EvaluationPeriod
Data NOT supplied
2001 2002Forcings 2000
Outputs 2001 20022000
Forcings 19941993
Outputs 19941993
San Pedro Shrub & Grass
Sevilleta Shrub & Grass
Tucson Mixed Shrub & Cacti
Split Sample TestSplit Sample TestSplit Sample TestSplit Sample Test
luis.bastidas usu.edu
Sevilleta
San PedroScience QuestionsScience QuestionsScience QuestionsScience Questions
1. What is the ability of the models to reproduce the water, energy, and carbon exchanges in semi-arid environments?
2. Are the current (usually single) representations of semi-arid lands in the models enough to reproduce the different environments that exist in those areas?
3. Does model calibration reduce the among-model range in the model simulations?
4. How much influence does the model parameterization have on the parameter estimations of “physically meaningful” parameters?
5. Do current carbon representations, developed for forests, properly reproduce carbon exchanges over vegetated arid lands?
luis.bastidas usu.edu
Sevilleta
San PedroInformation to be suppliedInformation to be suppliedInformation to be suppliedInformation to be supplied
• Rainfall and snowfall. • Wind speed. • Air temperature. • Specific humitidy, derived from relative humidity at
the Lucky Hills and Kendall sites.• Incident shortwave radiation• Incident longwave radiation, from N-LDAS.• Surface pressure form NCEP model outputs.
Forcings
• Vegetation type • Vegetation cover fraction• Height of vegetation• Leaf Area Index• Surface albedo• Longwave emissivity
Ancillary Information
luis.bastidas usu.edu
Sevilleta
San PedroAnalysis onAnalysis onAnalysis onAnalysis on
Monthly meanMonthly mean
Daily meanDaily mean
Daily amplitudeDaily amplitude
Daily phaseDaily phase
Min and max of the diurnal cycleMin and max of the diurnal cycle
Values at each time stepValues at each time step
luis.bastidas usu.edu
Sevilleta
San Pedro
luis.bastidas usu.edu
Sevilleta
San PedroData HandlingData HandlingData HandlingData Handling
luis.bastidas usu.edu
Sevilleta
San PedroTimelineTimelineTimelineTimeline
June 2003, Submission of final experimental protocolJune 2003, Submission of final experimental protocol
August 27-29, 2003, Workshop for training of participants in the use of the August 27-29, 2003, Workshop for training of participants in the use of the multi-criteria proceduresmulti-criteria procedures
September 2003, Distribution of forcing data to the participants through September 2003, Distribution of forcing data to the participants through website website www.sahra.arizona.edu/pilpssanpedrowww.sahra.arizona.edu/pilpssanpedro
September 30, 2003, submission of model information and default September 30, 2003, submission of model information and default parameter sets used by the models for semi-arid areas.parameter sets used by the models for semi-arid areas.
October 31, 2003, Submission of default parameter simulationsOctober 31, 2003, Submission of default parameter simulations
November 1, 2003, Distribution of calibration dataNovember 1, 2003, Distribution of calibration data
January 31, 2004, Deadline for submission of results both ad-hoc and January 31, 2004, Deadline for submission of results both ad-hoc and multi-criteria calibrationsmulti-criteria calibrations
May 2004, Workshop for analysis of preliminary results. May 2004, Workshop for analysis of preliminary results.
luis.bastidas usu.edu
Sevilleta
San PedroSo Far …So Far …So Far …So Far …
USA - COLA (Paul Dirmeyer, Xiang Gao)
USA - NCEP Ken Mitchell Dag Lohmann Qingyun Duan
USA - VISA U Texas Austin (Liang Yan, Guofeng Niu)
USA - CLM2 U Texas Austin (Liang Yan, Guofeng Niu)
USA - Mosaic, Catchment NASA GSFC (Randy Koster)
USA – SSib, UCLA – Yonkang Xue
CANADA - CLASS - Diana Verseghy
FRANCE - ORCHIDEE MeteoFrance (Jan Polcher-Nicolas Viovy)
AUSTRALIA CIRES - Andy Pitman
RUSSIA Russian Academy of Sciences, Institute of Geography (Andrey Shmakin)
RUSSIA Russian Academy of Sciences, Institute of Water Problems (Yevgeniy Gusev, Olga Nasonova)
luis.bastidas usu.edu
Sevilleta
San PedroMOSCEM AlgorithmMOSCEM AlgorithmMOSCEM AlgorithmMOSCEM Algorithm
1
11
22
23 3
F1
F2
F1
F2
F1
F2
1/8
4/82/8
10/89/8
9/810/8
12/8
F1
F2
luis.bastidas usu.edu
Sevilleta
San Pedro
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