Presentation Objectives - ORNL DAAC

Presentation Objectives - ORNL DAAC

Preparing Metadata Records Suresh K.S. Vannan ORNL , Oak Ridge, TN [email protected] Viv Hutchison US Geological Survey, Denver, CO [email protected] Data Management Practices for Early Career Scientists 2013 NASA Terrestrial Ecology Science Team Meeting May 2nd , 2013 Understanding the role of metadata NASA TE Best Data Management Practices, May 2, 2013 2 Metadata Topics Measure

Identify Information to be collected in a metadata record Explain Explain metadata collected for data descriptiveness Test Test the Quality of information presented Advertise Publish the information using metadata standards NASA TE Best Data Management Practices, May 2, 2013 3 Measure - Data Collection NASA TE Best Data Management Practices, May 2, 2013

4 From Field Notes to Datasets Soil Moisture at field sites Site Soil Moisture Standard Deviation Number of Observations Minimum Soil Moisture Maximum Soil Moisture

Harvard Forest 4.4 --- 1 4.4 4.4 Walker Branch 7.0 3.0

3 4 10 Ozark 10.0 --- 1 10 10 Howland Forest

10.5 2.0 11 9 16 Duke Forest 11.0 15.5 2

0 22 Tonzi Ranch 11.5 4.5 17 3 22 Sky Oaks 12.5

5.5 897 0 28.8 Santarem-Km77 13.2 5.6 569 -1

32 Niwot Ridge 13.3 5.9 16 4 27 NASA TE Best Data Management Practices, May 2, 2013 5 Parameter - Description

NASA TE Best Data Management Practices, May 2, 2013 6 Parameter Location and Time NASA TE Best Data Management Practices, May 2, 2013 7 Metadata is a critical part of the data picture NASA TE Best Data Management Practices, May 2, 2013 8 The end is where it begins.. Providing data to another researcher:

What parameters are contained in the data? Which temporal and spatial region does this data cover? What limitations, if any, do the data have? What does the data describe? How should the data be cited if it is re-used in a new study? Receiving data from another researcher:

What are the parameters characterized in this data What are the data uncertainties? How was the data measured/? Are there any fees associated with the data? In what scale were the data created? What do the values in the tables mean? What software do I need in order to read the data? What projection are the data in? Is this data set restricted? NASA TE Best Data Management Practices, May 2, 2013 9 Metadata Pecha Kucha

NASA TE Best Data Management Practices, May 2, 2013 10 Metadata Pecha Kucha NASA TE Best Data Management Practices, May 2, 2013 11 Metadata Pecha Kucha NASA TE Best Data Management Practices, May 2, 2013 12 Metadata Pecha Kucha

NASA TE Best Data Management Practices, May 2, 2013 13 Test City of Salem 44,-123 44.992575,-123.056853 NASA TE Best Data Management Practices, May 2, 2013 14 Steps to Create Quality Metadata Organize your information Review for accuracy and completeness Do not use jargon

Use informative title that includes topic, timeliness of the data, and geography Use none , unknown, and nodata meaningfully Be specific and quantify when you can Select keywords wisely http://gcmd.nasa.gov/learn/keywords.html Remember: a computer will read your metadata Fully define entities, attributes, units of measure NASA TE Best Data Management Practices, May 2, 2013 15

Tools for capturing metadata You - Data creator Metadata Editors commercial and Open Source ArcGIS desktop Oxygen USGS metadata editor Metacat Documentation NASA TE Best Data Management Practices, May 2, 2013 16 Advertise Your Metadata and data: Publish Share your metadata with other researchers Examples of metadata search portals: ORNL DAAC http://daac.ornl.gov

Reverb http://reverb.echo.nasa.gov/reverb/ Data.gov http://data.gov NASA TE Best Data Management Practices, May 2, 2013 17 Lets Address Concerns Concern Solution workload required to capture accurate robust metadata incorporate metadata creation into data development process

distribute the effort time and resources to create, manage, and maintain metadata include in grant budget and schedule readability / usability of metadata use a standardized metadata format discipline specific information and ontologies use profile standard to require specific information and use specific values

NASA TE Best Data Management Practices, May 2, 2013 18 Final thoughts Metadata It isn't easy It isn't free Ask everything But Protect your research investment and research legacy NASA TE Best Data Management Practices, May 2, 2013 19

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