the university of new mexico continual compositing of ndvi modis products for theresa r. watson,...
TRANSCRIPT
The University of New Mexico
Continual Compositing of Continual Compositing of NDVI MODIS Products forNDVI MODIS Products for
Theresa R. Watson, Richard P. Watson,
Louis A. Scuderi, Enrique Montaño, & Crystal M. Krause
International EOS/NPP Direct Readout Meeting 2005
Benevento, Italy * October 3-6, 2005
High Temporal Frequency High Temporal Frequency Vegetation MonitoringVegetation Monitoring
The University of New Mexico
OverviewOverview
- CREATE- Current Vegetation Products- Need for local products- Using Continual Daily Products - Projects- Future Approaches
The University of New Mexico
CREATECREATECenter for Rapid Environmental AssessmentCenter for Rapid Environmental Assessment& Terrain Evaluation& Terrain Evaluation
• The University of New Mexico,Albuquerque, NM, USA
• Direct Broadcast Center with
1- 4.5m X-Band Antenna
1- 1.5m L-Band Antenna• 5-Node Processing Cluster• 17.5 TeraBytes On-line Storage
The University of New Mexico
The University of New Mexico
• Seasonality• Green-up, Senescence• Local Precipitation Events• Drought Conditions• Disease Monitoring• Large Scale Death (Climate Change)
Monitoring Vegetation on a Monitoring Vegetation on a Finer Temporal ScaleFiner Temporal Scale
The University of New Mexico
Monitoring Vegetation on a Monitoring Vegetation on a Finer Temporal ScaleFiner Temporal Scale
• Seasonality• Green-up,
Senescence• Agriculture
The University of New Mexico
Monitoring Vegetation on a Monitoring Vegetation on a Finer Temporal ScaleFiner Temporal Scale
• Local Precipitation Events in Semi-Arid Lands
• Drought Conditions
The University of New Mexico
Monitoring Vegetation on a Monitoring Vegetation on a Finer Temporal ScaleFiner Temporal Scale
• Mortality, Large-Scale Die Off • Disease Monitoring
The University of New Mexico
Monitoring Vegetation on a Monitoring Vegetation on a Finer Temporal ScaleFiner Temporal Scale
• Mortality, Large-Scale Die Off • Disease Monitoring
The University of New Mexico
Monitoring Vegetation on a Monitoring Vegetation on a Finer Temporal ScaleFiner Temporal Scale
• Mortality, Large-Scale Die Off • Disease Monitoring
The University of New Mexico
Monitoring Vegetation on a Monitoring Vegetation on a Finer Temporal ScaleFiner Temporal Scale
• Mortality, Large-Scale Die Off • Disease Monitoring
The University of New Mexico
Monitoring Vegetation on a Monitoring Vegetation on a Finer Temporal ScaleFiner Temporal Scale
• Mortality, Large-Scale Die Off • Disease Monitoring
The University of New Mexico
Current NDVI ProductsCurrent NDVI Products
• DAAC 16 Day NDVI• DB IMAPP Daily NDVI
With or Without Cloudmask
• DB DAAC Daily NDVIWith or Without Cloudmask
The University of New Mexico
Current Products Insufficient Current Products Insufficient for Finer Temporal Scale for Finer Temporal Scale Research & ApplicationResearch & Application
• DAAC 16 Day NDVIInsufficient for Finer Temporal Scale
• Daily NDVICloud Problems
Angle Problems (BRDF), Edge factors
The University of New Mexico
Study of Arid and Semi-Arid LandsStudy of Arid and Semi-Arid Lands
• Arid and Semi-Arid lands compromise 47% of Land Surface
• Grazing occurs on 25% of land surface
The University of New Mexico
Study of Arid and Semi-Arid LandsStudy of Arid and Semi-Arid Lands
NEW MEXICO
• 9-10 inches of rain per year
• 75-80% Sunshine
The University of New Mexico
Continual NDVI Products
Running NDVI ProductsMax Values
Mean Values16-Day8-Day5-Day4-Day
The University of New Mexico
Static NDVIStatic NDVI
• 16-Day Composite NDVI
The University of New Mexico
The University of New Mexico
Running NDVIRunning NDVI
The University of New Mexico
Study AreasStudy Areas
• Agricultural San Luis Valley, CO, USA
• Semi-Desert RegionSevilleta Wildlife Refuge, LTER Project, NM, USA
• Open GrasslandBLM grazing lands - Eastern New Mexico, NM, USA
The University of New Mexico
San Luis Valley, COSan Luis Valley, COOne of the largest high desert valleys in the world, lying at an
altitude of over 7,000 feet, it is approximately 125 miles long and over 65 miles wide.
The University of New Mexico
San Luis Valley, COSan Luis Valley, CO
The University of New Mexico
San Luis Valley, COSan Luis Valley, CO
AgriculturePotatoes
Beer Barley
Alfalfa
Lettuce
Carrots
The University of New Mexico
Sevilleta Wildlife AreaSevilleta Wildlife Area
• Long Term Ecological Research Station• Semi-arid grassland/desert
The University of New Mexico
Sevilleta Wildlife AreaSevilleta Wildlife Area
The University of New Mexico
Grassland Counties of New Grassland Counties of New MexicoMexico
The University of New Mexico
Comparison of Four-Day Running Comparison of Four-Day Running NDVI to DAAC 16-Day NDVINDVI to DAAC 16-Day NDVI
• 16-Day period over Precipitation Event in June 2005
San Luis Valley NDVI Daily vs. Composite
0.000
0.100
0.200
0.300
0.400
0.500
0.600
5/24/055/26/055/28/055/30/056/1/056/3/056/5/056/7/056/9/056/11/056/13/056/15/056/17/056/19/056/21/056/23/05
NDVI
Daily Mean
Run_4 Mean
DAAC 16 NDVI
The University of New Mexico
Comparison of Four-Day Running Comparison of Four-Day Running NDVI to DAAC 16-Day NDVINDVI to DAAC 16-Day NDVI
• 16-Day period over Precipitation Event in June 2005
Sevilleta East NDVI Daily vs. Composite
0.000
0.050
0.100
0.150
0.200
0.250
0.300
0.350
5/24/055/26/055/28/055/30/056/1/056/3/056/5/056/7/056/9/056/11/056/13/056/15/056/17/056/19/056/21/056/23/05
NDVI
Daily Mean
Run_4 Mean
DAAC 16 NDVI
The University of New Mexico
Comparison of Four-Day Running Comparison of Four-Day Running NDVI to DAAC 16-Day NDVINDVI to DAAC 16-Day NDVI
• 16-Day period over Precipitation Event in June 2005
Grassland Daily vs.Composite
0.000
0.050
0.100
0.150
0.200
0.250
0.300
0.350
0.400
5/24/055/26/055/28/055/30/056/1/056/3/056/5/056/7/056/9/056/11/056/13/056/15/056/17/056/19/056/21/056/23/05
NDVI
Daily Mean
Run_4 Mean
DAAC 16 NDVI
The University of New Mexico
Future ResearchFuture Research
• Comparison of 8-, 5-, and 4-day Running Composites• Incorporation of Various Cloud Masks• Incorporation of BRDF• Longer-Term comparisons, Multiple Events
The University of New Mexico
Thank youThank you
The University of New Mexico
The University of New Mexico
The University of New Mexico
The University of New Mexico
Cloud/NDVI ThresholdCloud/NDVI Threshold
The University of New Mexico
Daily Mean vs. Running 4-Day MeanDaily Mean vs. Running 4-Day Mean
San Luis Valley Daily vs. Run_4 Mean NDVI
0.000
0.050
0.100
0.150
0.200
0.250
0.300
0.350
0.400
0.450
0.500
5/25/095/26/095/27/095/28/095/29/095/30/095/31/096/1/096/2/096/3/096/4/096/5/096/6/096/7/096/8/096/9/096/10/09
NDVI
MeanRun_4 Mean
The University of New Mexico
Daily Mean vs. Running 4-Day MeanDaily Mean vs. Running 4-Day Mean
Sevilleta East Daily vs. Run_4 Mean NDVI
0.000
0.050
0.100
0.150
0.200
0.250
0.300
0.350
5/25/095/26/095/27/095/28/095/29/095/30/095/31/096/1/096/2/096/3/096/4/096/5/096/6/096/7/096/8/096/9/096/10/09
NDVI
MeanRun_4 Mean
The University of New Mexico
Daily Mean vs. Running 4-Day MeanDaily Mean vs. Running 4-Day Mean
Grassland Daily vs. Run_4 Mean NDVI
0.000
0.050
0.100
0.150
0.200
0.250
0.300
0.350
0.400
5/25/095/26/095/27/095/28/095/29/095/30/095/31/096/1/096/2/096/3/096/4/096/5/096/6/096/7/096/8/096/9/096/10/09
NDVI
MeanRun_4 Mean