SUBGROUP

1
LAND PRODUCT

• SUBGROUP
• Overview for Land Cover Workshop
• Joint Research Center, Ispra, Italy, March 27-28
• Provided by Jeff Morisette, presented by Alan
  Strahler
• Please direct questions to
• Jeffrey.T.Morisette_at_nasa.gov, [phone]

2
Outline

• LPV overview
• LPV activities relevant to Land Cover validation
• CEOS Land Validation Core Sites
• Case studies
• Special Issue
• Plans

3
Outline

• LPV overview
• LPV activities relevant to Land Cover validation
• CEOS Land Validation Core Sites
• Case studies
• Special Issue
• Plans

4
GOFC/GOLD and LPV Map
IGOS-P
CEOS Plenary
IGOS
WGCV
GTOS
LPV
GOFC/GOLD
User accuracyrequirements IT and Regional
networks local expertise GOFC ITs
Informed use of CEOS products Product
evaluation, feedback Validation protocols LPV
topical mtgs product-specific intercomparisons
You are Here
5
Mission Statement Goals

• to foster quantitative validation of higher level
  global land products derived from remote sensing
  data in the solar reflective and thermal infrared
  wavelengths and relay results so they are
  relevant to users
• to increase the quality and economy of global
  satellite product validation via developing and
  promoting international standards and protocols
  for field sampling, scaling, error budgeting,
  data exchange for global land product validation
• to advocate mission-long validation and
  intercomparison programs for current and future
  earth observing satellites.
• (embossed to be deleted, yellow to be added, this
  is open for discussion)

Please note
6
Outline

• LPV overview
• LPV activities relevant to Land Cover validation
• CEOS Land Validation Core Sites
• Case studies
• Special Issue
• Plans

7
CEOS Land Product Validation Sites
Currently being developed in conjunction with
WGISS

• CEOS Land Product Validation Core Sites
• 56 sites covering most major Biomes
• Data sets compiled for these sites could serve
  land cover validation

8
EOS Core Sites data suite
Serving as an examplefor CEOS Core Sites
Satellite imagery MODIS Subsets (EDC DAAC)
ETM (EDC DAAC) ASTER data (EDC DAAC) MISR
Local Mode (Langley DAAC) SeaWiFS Subsets
(GSFC) IKONOS (SDP/GLCF) GeoCover 90s TM
(SDP) EO-1
Ancillary layers and background information
such as existing - elevation - land cover
- reference layer available through UMd ESIP
GLCF
Field and airborne data archive and access
through ORNL DAACs Mercury System BSRN and
Surfrad AERONET and FLUXNET data
White available for all Core Sites Red
available for some Core Sites, Orange potential,
but not currently available
Field data graphic courtesy of the BigFoot program
9
Coupled field data and high-resolution imagery
as tie points
High-res and/or field derived parameter(with
error bars)
Satellite B
Vegetation parameter
Satellite A
Time years
10
Case Studies posted on web

• VALERI, LAI
• Boston U, LAI
• Liang et al., Albedo

A land cover validation case study is needed.
11
LPV Special Issue

• Special Issue describing the state of the art
  research on both protocol and results for
  validation and accuracy assessment of global land
  products
• Three sections
• Surface Radiation variables
• Ecosystem variables
• Land cover characteristics (including land cover
  change, fire, and burnt area)
• Solicit a summary from User/GCM community to
  write a note for each section on the implication
  for the uncertainty/validation of the products

12
Outline

• LPV overview
• LPV activities relevant to Land Cover validation
• CEOS Land Validation Core Sites
• Case studies
• Special Issue
• Plans

13
LPV Plans (2003-2005)

• Continue working with users to define uncertainty
  objectives/needs
• Establish individual listserv groups for
  biophysical, land cover, fire
• Identify and support global test sites for both
  systematic and episodic measurements (CEOS Land
  Validation Core Sites)
• Develop procedures for validation, data exchange
  and management (with WGISS) resulting in on-line
  access to CEOS Land Validation Core Site data
  sets.
• Identify opportunities for coordination and
  collaboration
• Intercomparisons
• global test sites for systematic measurements
• Develop consensus best practice protocols for
  data collection and description

14
Strategy for developing protocols

• LPV is working toward protocols with three steps
  
• which are going on somewhat parallel for global
  land cover validation
• Workshops (this meeting and fall meeting at BU)
• Bringing together producers, users, and
  validation experts to initiate discussion,
  establish the state of the art, and consider
  core sites or regions for validation activities
• Case studies (IGBP and GLC-2000, are potential)
• Posted on the LPV web site
• First step in developing a more formal protocol
• Publication(s) (proposed special issue)
• Peer review document with details pertaining to
  the validation of a given global land product.

15
Bottom line

• The attendance list from this meeting will serve
  as the initial e-mail list for the land cover
  listserv (in addition to other GOFC/GOLD land
  cover team members)
• The CEOS Land Validation Core Sites should be
  considered as a resource for global land
  cover/land cover validation can utilize
  (admittedly, not a random sample, but could
  randomize within a site)
• A case study from IGBP and/or GLC2000 validation
  would be a welcome contribution to add to the LPV
  web page
• A contribution to the special issue on validation
  of global land cover would be welcome and
  appreciated.