June 7, 2011
From Earth Science Information Partners (ESIP)
Participants
- Gregory Leptoukh (NASA GSFC)
- Greg Stensaas (USGS)
- Oleg Aulov (UMBC)
- Carol Meyer (ESIP)
- Erin Robinson (ESIP)
- Gary Foley (EPA)
- Tyler Stevens (NASA GSFC)
- Ed Armstrong (JPL)
- Joanne Nightingale (NASA GSFC)
- Phil Jones (NOAA NCDC)
- Karen Moe (NASA GSFC)
- Barry Weiss (JPL)
- Fritz VanWijngaarden (Northrop Grumman)
- W. Han (?)
Agenda
- Greg Stensaas (Chair of the CEOS Cal/Val WG): "International Earth Observation Quality Assurance Efforts".
- Preparation for the Summer EIP Meeting in Santa Fe: ESIP Summer 2011 Meeting
- Speakers
- Identify reps of various research and application communities for:
- their understanding and requirements for quality
- methodology they use to assess and quantify data quality
- Communities: SST, Ocean color, Precipitation, Atm Chemistry, Land, Modeling, Applications (e.g., Air Quality),...
Old Action Items
- Hook and Greg: setup a page for collecting and aliasing quality-related terms
Notes
Upload community-specific presentations/papers either to the Community portion of the web site
- Greg Leptoukh noted that the agenda for the summer meeting breakout session is still fluid.
- Ocean color community not able to attend
- Invitations to NASA data quality PIs will be issued
- AQ and Energy communities will be represented
- Greg Stensaas, USGS & Chair of CEOS Calibration/Validation WG
- Landsat program repsonsibilities shifting
- continually trying to improve data accuracy
- need to improve time series terrestrial data
- integration of Landsat data with other data and sensors to support climate change research
- Need calibration to improve accuracy across systems
- requires better documentation
- improves consistency across data sets
- GCOS - improved definitions for Accuracy & Stability
- better definitions for standards, processes and establish quality indicators
- Need coordination among MANY players in the quality space
- CEOS
- GEO SBA linkages (CEOS is the space arm of GEO) - (http://earthobservations.org)
- WG on Calibration/Validation (WGCV) - has 6 subgroups
- Cal/Val portal (http://calvalportal.ceos.org)
- test site (http://earthexplorer.usgs.gov)
- CEOS Visualization Environment (COVE)
- GEOSS support for quality information for SBAs (timely, quality, long-term & global)
- Quality Assurance Framework for Earth Observations (QA4EO) http://qa4eo.org
- Reference standards can be test sites or a reference to a standard ("fit for purpose")
- Definition has to be relevant to the whole suite of observations
- October 18-20 QA4EO meeting in Oxford, England (4th meeting)
- Joint Agency Commercial Imagery Evaluation (JACIE) - annual
- ESA GMES quality assurance requirements
- Preceding provides an overview of many of the quality assurance efforts going on globally
- important to work collaboratively across the many players
- Q&A for Greg Stensaas
- With multiple approaches for calibration & validation, how is th (Note: Greg L. - what was your question?)
- calibration of instruments must be documented to international standards; still learning how to do this with, especially for user definitions of quality
- validation
- ISO standard use of "Geographic" language, why?
- can relate it to both a spatial or temporal extent (either or both) - don't worry about the word
- ISO/NP TS 19159 Geographic information - Calibration and validation of remote sensing imagery sensors and data
- ISO/CD 19157 Geographic information -- Data quality
- With regard to QA4EO effort, how can ESIP support the task?
- Need to show value of the development of quality indicators (e.g. Air Quality)
- UK workshop will feature showcases
- ISO Data Quality - processes
- From the point of view of users, knowing total quality assurance from instrument to data product is essential (Foley)
- Decision makers need some certainty that they data they're using is of high enough "quality" in order to be able to use it
- Actions for Follow Up:
- Link to Air Quality Working Group (Meyer/Robinson) - done
- Obtain EPA Data Quality Documentation (Foley/Stensaas)
- Invitations to CEOS Cal/Val WG subgroups (Meyer/Leptoukh/Stensaas/Nightingale)
- Get slides from Greg Stensaas (Leptoukh/staff)
Action Items
- All: continue looking for speakers and community reps