subgroup report jeff morisette [email protected], (301) 614-6676 gofc/gold global...
Post on 22-Dec-2015
220 views
TRANSCRIPT
![Page 1: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/1.jpg)
SUBGROUP REPORT
Jeff [email protected], (301) 614-6676
GOFC/GOLD Global Geostationary Fire Monitoring
CEOS Working Group on Cal/Val
LAND PRODUCT
![Page 2: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/2.jpg)
LPV outlineLPV outline
• Review of subgroup’s status and goals
• Validation activities
• Conclusions
![Page 3: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/3.jpg)
LPV outlineLPV outline
• Review of subgroup’s status and goals
• Validation activitiesValidation activities
• ConclusionsConclusions
![Page 4: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/4.jpg)
• Established in 2000• Followed Terrain-mapping subgroup as topic-
specific subgroup(non-wavelength-specific)
• Jeff Morisette (NASA) starting as chair in February 2003
• Agreement from Fred Baret (“VALERI, INRA-CSE) to be “chair-elect”= potential chair in 2006)
![Page 5: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/5.jpg)
IGOS-P
GOFC/GOLD and LPVGOFC/GOLD and LPV
User accuracyrequirements
IT and Regional networks: local
expertise
GOFC ITs
Informed use of CEOS products
Product evaluation, feedbackValidation protocols
LPV: topical mtgs & product-specific intercomparisons
LPV
WGCV
CEOS Plenary
GOFC/GOLD
GTOS
IGOS
![Page 6: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/6.jpg)
Why validate global land productsWhy validate global land products
• WGCV definition implies validation = “Estimating Uncertainty”
• Good science and resource management require understanding of product accuracy/uncertainty
• Explicit statements of uncertainty fosters an informed user community and improved use of data
• International environmental protocols and agreements imply products may be independently evaluated and possibly challenged
• As more, and similar, global products are produced by CEOS members (via such programs as “GEO”), inter-use will require characterization of each product’s uncertainty
![Page 7: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/7.jpg)
LPV: mission statement & objectivesLPV: mission statement & objectives
Mission• To foster quantitative validation of higher-level global land products
derived from remote sensing data and relay results so they are relevant to users
Objectives
(a) To work with users to define uncertainty objectives
(b) To identify and support global test sites for both systematic and episodic measurements (WGCV / WGISS Test Facility)
(c) To identify opportunities for coordination and collaboration
(d) To develop consensus “best practice” protocols for data collection and description
(e) To develop procedures for validation, data exchange and management (with WGISS)
![Page 8: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/8.jpg)
Big PictureBig Picture
LPV provides a validation service to the Integrated Global Observation Strategy’s Global Terrestrial Observation System.
Implications:– Focus Products: Biophysical, Land Cover, & Fire– Working in conjunction with GOFC/GOLD’s regional
networks– Need to integrate with TEMS & GT-Net
![Page 9: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/9.jpg)
Current/Upcoming Topical workshopsCurrent/Upcoming Topical workshops
• Follow-up Land Cover/Changeaiming toward “best practices” documentEarly 2004, Boston University, USA
• Fire and Burn scar:Global Geostationary Fire Monitoring ApplicationsA Joint GOFC/GOLD Fire and CEOS LVP WorkshopMarch 23-25, 2004, EUMETSAT, Darmstadt, Germany(related to Action WGCV 20-8)
• “Results” workshop for LAI-intercomparison fruition of LAI-intercomparison 16 August 2004, University of Montana, Missoula US
• Surface Reflectance and Albedo/BRDF ? in conjunction with next BSRN meeting
![Page 10: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/10.jpg)
Five listservs establishedFive listservs [email protected] information regarding LPV activity, both scientific and administrative
[email protected] RADiation products, including surface reflectance/atmospheric correction, land surface temperature, albedo and BRDF
[email protected] parameters, including vegetation indices, leaf area index, FPAR, and vegetation productivity
[email protected] Cover and land cover change products
[email protected], burn scar, and fire emissions products
(related to action WGCV 20-11)
![Page 11: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/11.jpg)
IEEE Transaction on Geoscience and Remote Sensing special issuesIEEE Transaction on Geoscience and Remote Sensing special issues
Purpose:• Lay out the current suite of higher-level global
land products and quantitatively establish their accuracy.
• Provide a user’s perspective on the implications of a product’s accuracy to understand:
– how accurate the product needs to be– why it is important to quantify the uncertainly– how close currently available data come to meeting
those needs
![Page 12: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/12.jpg)
Proposed TGARS special issuesProposed TGARS special issues
• Open invitation – (suggestions or volunteers for reviews are also
welcome)
• Papers due October 2004• Anticipated publication date early 2006• Ultimate objective is to provide not “mandatory
protocols” but an “acceptable standard”
![Page 13: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/13.jpg)
Validation:the process of assessing by independent
means the quality of the data products derived from the system outputs
(LPV will operates under this definition, but also with the understanding that validation activities should:- consider user accuracy needs and- feedback to algorithm improvements.)
CEOS DefinitionCEOS Definition
![Page 14: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/14.jpg)
MODIS validation “hierarchy”MODIS validation “hierarchy”
• Stage 1 Validation: Product accuracy has been estimated using a small number of independent measurements obtained from selected locations and time periods and ground-truth/field program effort.
• Stage 2 Validation: Product accuracy has been assessed over a widely distributed set of locations and time periods via several ground-truth and validation efforts.
• Stage 3 Validation: Product accuracy has been assessed and the uncertainties in the product well established via independent measurements in a systematic and statistically robust way representing global conditions.
![Page 15: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/15.jpg)
Biome MapBiome Map
• Exhaustive and mutually exclusive global biome map• Close match to GOFC/GOLD regional networks• Published independently of LPV
Gurney et al. (2002) Towards robust regional estimates of CO2 sources and sinks using atmospheric transport models. Nature, 415, 626-630, 7 Feb. 2002.
![Page 16: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/16.jpg)
Accuracy statementsAccuracy statements
• Should be “user-oriented” and supported with peer-review literature
• Augment validation “stage hierarchy”
• Standardize/summarize information for each product
• MODIS land team plans to update CEOS information for MODIS land products
![Page 17: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/17.jpg)
MODLAND Validation home pagehttp://landval.gsfc.nasa.gov/MODIS
Link to accuracy statement for each product
…page for each product
…pages for supporting materials
• Overall accuracy statement• Link to QA information• List of support material
•Title, author, abstract•Figures/captions•Tables/captions
Example: MODIS accuracy statementsExample: MODIS accuracy statements
![Page 18: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/18.jpg)
LPV outlineLPV outline
• Review of subgroup’s status and goalsReview of subgroup’s status and goals
• Validation activities
• ConclusionsConclusions
![Page 19: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/19.jpg)
LPV Validation examplesLPV Validation examples
• CEOS “Core Sites”
• Leaf Area Index “Intercomparison”
• Albedo/BRDF
• Active Fire/Burnt Area
• Opportunities for Geostationary
![Page 20: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/20.jpg)
CEOS “Core Sites” goalsCEOS “Core Sites” goals
• Provide a focus for ongoing satellite, aircraft, and ground data collection for validation of CEOS member satellite/sensor products
• Provide scientists with sets of readily accessible in-situ and CEOS member instrument data for algorithm validation and improvement
• Build on infrastructure of existing scientific networks and validation sites
• Realize international cost-sharing opportunities
![Page 21: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/21.jpg)
CEOS “Core Sites” implementationCEOS “Core Sites” implementation
• Utilize existing networks of validation sites for joint/multiple validation of CEOS member global land product
– EOS Land Validation Core Sites– VALERI Network of sites – GTOS “Terrestrial Ecosystem Monitoring Sites”– CEOP/NASDA, CSIRO, GT-net, ILTERS sites
• Provide easy access to high resolution data and subsets of global land products from CEOS member sensors
• Conducted as a joint project with the CEOS Working Group on Information Systems and Services
![Page 22: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/22.jpg)
CEOS “Core Sites”: Phase 1CEOS “Core Sites”: Phase 1
• Simple, Web-Based Interface to CEOS Core Sites
• Allow Users to Specify Conversion Parameters
• Provide Access to EO and in-situ Data• Begin With MODIS, SPOT Veg, & Landsat• Allow Reprojecting• Allow Reformatting into GeoTIFF
![Page 23: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/23.jpg)
Subsetting, Reprojection,
Formatting, QCData Catalog
Limited StorageData Tools
Core Test Sites Data DistributionCore Test Sites Data Distribution
MODIS Subsets, ETM+, ASTER(EDC DAAC)
SeaWiFS Subsets(GSFC)
MAVT(MERIS,AATSR)
IVOS Data
InvestigatorWGISS Test Facility
In Situ Data (PIs; ORNL)
Science
![Page 24: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/24.jpg)
![Page 25: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/25.jpg)
![Page 26: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/26.jpg)
http://edcsgs16.cr.usgs.gov/wgiss/
User Code = calval99
Password = wgiss03
Feedback welcome
Jeff Morisette ([email protected]) John Dwyer ([email protected])
![Page 27: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/27.jpg)
NDVI time series for Harvard Forest LTERNDVI time series for Harvard Forest LTER
Year: close up 2000 - 2004
![Page 28: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/28.jpg)
NDVI time series for Harvard Forest LTER NDVI time series for Harvard Forest LTER
Year: close up 2000 - 2004
![Page 29: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/29.jpg)
NDVI time series for Mongu, Zambia NDVI time series for Mongu, Zambia
Year: close up 2000 - 2004
![Page 30: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/30.jpg)
“Difference” analysis“Difference” analysis
Lag
AC
F
0 5 10 15
-0.5
0.0
0.5
1.0
Series : spotlessavhrr[["mongu"]]NDVI SPOT - AVHRR
1981 through 2002Year
Diff
ere
nce
in N
DV
I
1998 1999 2000 2001 2002 2003 2004
-0.1
0-0
.05
0.0
0.0
50
.10
0.1
50
.20
Autocorrelation function
Lag (in months)Years (1998 – 2004)
NDVI Difference: SPOT - AVHRR
Average difference is 0.034 Significant ½ and 1 year lags
![Page 31: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/31.jpg)
LPV Inter-comparisonLPV Inter-comparisonSite contacts provide “Vital Statistics”
LPV provides subsets of global LAI product(s)
Field campaign(s):
LPV acquires and posts relevant high-res multispectral imagery
Site contacts collect field data and register these in the Mercury system
Site contacts provide Internet link to locally maintained high-resolution LAI surface, with proper documentation on how the surface was derived
LPV posts link to LAI-surface on LAI-intercomparison page
LPV to create link to the site from the LAI-intercomparison page
Data are shared among fellow “LAI-intercomparison” participants for research comparing both validation results and methods
Sites added to this international activity are those that help create a globally
representative sample - across biomes and continents
AND have a strong need or intention to utilize global, coarse resolution, LAI products.
![Page 32: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/32.jpg)
Albedo “Intercomparison”Albedo “Intercomparison”
• Albedo intercomparison is gaining momentum• Discussed at meeting in Fall ’02• Consider are of overlap between MSG and MODIS• Utilize Baseline Surface Radiation Network sites with
Albedometers• MODIS Albedo and Aerosol products subset and
available through Oak Ridge National Lab• Concept will be brought to BSRN at their July meeting
(interaction between Crystal Schaaf, Atsumu Ohmura, and Andreas Roesch)
• “Kick off” will be a joint Working on Cal/Val meeting / Albedo Validation Campaign in Argintina, early 2005
![Page 33: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/33.jpg)
The CEOS “Intercomparison” conceptThe CEOS “Intercomparison” concept
• LAI will serve as pilot study (August workshop and article in special issue)
• Albedo intercomparison is gaining momentum
• Burnt area intercomparison has strong potential – GBA2000 and MODIS in Africa
![Page 34: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/34.jpg)
“Intercomparison” General Timeline“Intercomparison” General Timeline
LAI Albedo Burnt AreaTopical meeting to
establish data requirements
Decide on Sites
Develop data sharing infrastructure
Field Campaigns & individual product analysis
Synthesis of results
![Page 35: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/35.jpg)
MODIS burnt area validationMODIS burnt area validation
• Courtesy of David Roy et al., UMd
• Botswana, Okavango Delta, 2001• Landsat ETM+ path 175 row 073
• Cloud-free scenes acquired 32 days apart:– September 4th – October 6th
![Page 36: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/36.jpg)
Landsat ETM+
Sept. 4th
![Page 37: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/37.jpg)
Landsat ETM+
Oct. 6th
Yellow vectors = ETM+ interpreted burned areas occurring between the two ETM+ acquisitions
![Page 38: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/38.jpg)
MODIS 500mBurnedAreas
Sept. 4to Oct. 6
White vectors = ETM+ interpreted burned areas occurring between the two ETM+ acquisitions
![Page 39: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/39.jpg)
Each point illustrates the proportion of a 5.0*5.0 km cell mapped as burned
Burnt Area: MODIS vs ETM+
![Page 40: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/40.jpg)
ASTER fire counts
Pro
ba
blit
y M
OD
IS d
ete
ctio
n
0 50 100 150
0.0
0.2
0.4
0.6
0.8
1.0
Estimated Probabilities from Generalized Linear Model
0 50 100 150
0.0
0.2
0.4
0.6
0.8
1.0
ASTER fire counts
Pro
ba
blit
y M
OD
IS d
ete
ctio
n
0 50 100 150 200
0.0
0.2
0.4
0.6
0.8
1.0
Estimated Probabilities, fixed effects model, v3 vs v4
0 50 100 150 200
0.0
0.2
0.4
0.6
0.8
1.0
ASTER fire counts
Pro
ba
blit
y M
OD
IS d
ete
ctio
n
0 50 100 150
0.0
0.2
0.4
0.6
0.8
1.0
Estimated Probabilities from Model 1, MODIS version 3
0 50 100 150
0.0
0.2
0.4
0.6
0.8
1.0
GOFC/GOLD Fire implementation team: Active Fire Validation with ASTER
![Page 41: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/41.jpg)
MODIS fire detection: INPE and UMdMODIS fire detection: INPE and UMd
ACRE 29 Aug 2003UMd INPE
…probably not an issue of which is best, but rather how to combine. … GOES ABBA fire could be included
![Page 42: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/42.jpg)
MODIS fire detection: Brazil February 2004MODIS fire detection: Brazil February 2004
0
100
200
300
400
500
600
Terra NonCoincident
TerraCoincident
Aqua NonCoincident
AquaCoincident
INPE
UMD
X = 1.6 1.4 1.5 1.3Y = 1.2 1.1 1.2 1.1
Average pixel size – indication that non-coincident fire are further from NADIR
![Page 43: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/43.jpg)
View Angle dependencyView Angle dependency
NOAA-12 hot spot detection for Tocantins State – Brazil July-August 2001. (x axis = date dd/m)
0
20
40
60
80
100
120
140
160
180
200
220
1/7
8/7
15/7
22/7
29/7 5/8
12/8
19/8
26/8
Num
ber
of H
ot S
pots
![Page 44: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/44.jpg)
Curve fitting for regional summariesCurve fitting for regional summaries
Fit curve to fire counts filter for extent of ASTER viewing angle. Then take area under the curve to represent fire counts
0
20
40
60
80
100
120
140
160
180
200
220
1/7
8/7
15/7
22/7
29/7 5/8
12/8
19/8
26/8
Num
ber
of H
ot S
pots
- and fit curve with consideration of “error bars” estimated for near-nadir counts resulting from the ASTER analysis.
![Page 45: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/45.jpg)
Daily Fire countsDaily Fire counts
Time of Day
Num
ber
of H
ot s
pots
If we validate using sun-synchronous, what can we say about the accuracy of a “diurnal curve” – example: adjusting diurnal signal to four (or more) points from sun synchronous data, can we estimate the accuracy of “non-linearitites” between sun-syn. observations
![Page 46: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/46.jpg)
LPV outlineLPV outline
• Review of subgroup’s status and goalsReview of subgroup’s status and goals
• Validation activitiesValidation activities
• Conclusions
![Page 47: SUBGROUP REPORT Jeff Morisette Jeffrey.T.Morisette@nasa.gov, (301) 614-6676 GOFC/GOLD Global Geostationary Fire Monitoring CEOS Working Group on Cal/Val](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d775503460f94a589d1/html5/thumbnails/47.jpg)
ConclusionConclusion
• LPV is available to coordinate validation activities
• Burnt area “intercomparison” seems attractive
• Validation of Geostationary products is certainly possible, but somewhat limited