1. Data Discovery Tools and Services Part B
A Panel Presentation:
Pat Liggett, Ron Weaver, Sean Hardman, Ben Holt
(with help from Dave Gallaher, NSIDC)
October 15,
Burbank Airport Marriott
2/24/2019
2008 UWG 1

2. User Scenario Arctic Ice
The dramatic changes in sea ice have caught the attention of the nation. You are interested in seeing what all the hoopla is about.
You want to look at changes in the polar oceans, both sea ice and variables that influence sea ice, such as ocean temperature, wind speeds, atmospheric pressure, and atmospheric temperature.
Your Questions:
How rapid are changes (week to week changes, month to month changes)?
Are there any changes to primary production from changing sea ice?
How is the land snow / sea ice freeze and thaw cycle changing from season to season?
2/24/2019
July 16-17, 2008
2008 UWG
PO.DAAC Review, NASA HQ 2

3. The Objective
Create a simple to use interface(s) for Cryospheric and Physical Oceanographic data
Get more data distributed to more users
Build the 80% solution for experts to novices
Get the user just the data they need, in the format they want…quickly. Accelerate the use of data.
Allow users to display and interact with the data
Create a standard & flexible framework for new applications
Build a system that allows the user to analyze the data, at the server, so they don’t need to move as much data
Allow the system to be expanded by users or other machines
2/24/2019
2008 UWG

4. Operational Scenario
A user at either PODAAC or NSIDC selects a tool for searching for and selecting data. The tool, by all appearances, is identical at either site. Only the banners are specific to the data center. The tool provides the ability to select a region of interest anywhere on the globe. The user is able to enter a time or time range for the area of interest. After entering this information, a list of available products in the area of interest and time at both PODAAC and NSIDC (at a minimum) is provided. This list of products allows the user to select products from the list for display and/or download. As products are selected, a display of the region of interest is updated with a visualization of the product overlaying the region. The updated display is also annotated with the information from the data related to time, location, name of product and information pertinent to the data (speed, temperature, etc). Products can be overlayed upon each other, or can be displayed individually on the area of interest. The user can download a copy of the image currently displayed which will include the annotation information. In addition, the user can request data products for download in one of several available formats. The selectable formats shall include but not be limited to: HDF, NetCDF. The user can request to be notified of new products from this list as they become available in this region. The user can also request notification for any other products, not in the list but within the region when they become available at any of the data locations, PODAAC and NSIDC (at a minimum). The user can request that these products be available as input into other tools or services provided by the data locations, PODAAC and NSIDC (at a minimum) for further manipulation, display or analysis.
2/24/2019
2/24/2019
2008 UWG
2008 UWG 4

5. Functional Requirements
Functional Requirements for a single tool accessible from either PODAAC or NSIDC.
Support user request for information and/or products within a specified area and time from a range of products resident locally and remotely.
Provide ability to select area of interest by location and time.
Provide ability to select data available in area of interest by location and time from multiple measurements both local and remote.
Provide data center identification of data location .
Provide visualization of selected products as an overlay within specified area of interest.
Provide overlay visualization capability of multiple selected products within specified area of interest.
Provide annotation of the visualized overlays which includes not less than name of product, time of acquisition, lat/lon, measurement value range and type (speed, height, temperature).
Provide acquisition of annotated image products displayed within area of interest.
Provide acquisition of selected data products displayed within area of interest.
Provide acquired data products in selectable data format of at least HDF and NetCDF
Provide notification of new products as they become available within a specified period of time.
Provide notification of new products as they become available within the specified area of interest.
Provide machine to machine interface for acquisition of products via FTP.
Provide data linkage for selected products to other available tools and services at local and remote data center.
Provide access to tool described above from either PODAAC or NSIDC.
Provide data center unique product emphasis such as product table list order, or area of interest emphasis (masking, etc.).
2/24/2019
2/24/2019
2008 UWG
2008 UWG 5 5

6. Implementation Scenario of Arctic Ice Scenario at PODAAC and NSIDC
Extend Sea Ice Extent Map to be accessible through both PODAAC and NSIDC.
Single map, accessible from PODAAC and NSIDC.
Map interface is modified and maintained by NSIDC based on shared requirements from PODAAC and NSIDC
Provide local and remote access to data products identified by region selected via an interactive table.
PODAAC middle ware developed to allow access to products at both sites. Technology is operational from both sites and is modified and maintained by PODAAC based on shared requirements from PODAAC and NSIDC.
Provide Level 2 and Level 3 subsetting capability for all available products for the area of interest and based upon requirements for interoperability and data display and distribution.
PODAAC develops and extends L2, L3 subsetters for PODAAC products.
NSIDC develops and extends L2, L3 subsetters for NSIDC products.
Provide all products in a compatible form and format for display and further tool input.
PODAAC and NSIDC provide all products in an agreed form and format for display and further tool input and distribution.
Provide visualization capability for all selected products.
PODAAC and/or NSIDC develops visualization capability for product overlay to Ice Extent map based on agreed upon formats and requirements.
Provide DataCasting availability at both sites for notification of products
JPL developed Datacasting will be ported and configured for NSIDC by PODAAC.
Provide a single User Interface accessible from both sites that integrates the Sea Ice Extent Map, InteractiveTable of Products, visualization capability, format conversion, datacasting and product delivery.
Interface is developed and maintained by NSIDC based upon requirements from both PODAAC and NSIDC.
Provide machine to machine accessible products from both NSIDC and PODAAC
NSIDC and PODAAC select a single point of access for user selected products.
FTP directory specific to the user selection located at one or the other site.
2/24/2019
2/24/2019
2008 UWG
2008 UWG 6

7. Backup Material
2/24/2019
2/24/2019
2008 UWG
2008 UWG 7 7

8. Quick search, retrieval, display & delivery
User describes what they want
User selects What data (product)
User selects Where (location)
User selects When (time interval)
User selects filters (if any) Then:
If the number of data files is small the user is given thumbnails
User can view the thumbnail
The user can analyze the data
User can select the output format
In the order the user wants:
2/24/2019
2008 UWG

9. Target Capabilities
Query & Display Map - Query and display data in the same widow so the the context of the data relative to the region of interest can be seen along with the thumbnail view.
Value Filtering - Filtering of search results by parameter values, e.g. minimum, maximum, distribution, etc.
Periodic - The user may want the same time-series period for a study, for example, September of the past 10 years.
Multi-Data Selection - Allow multiple product selections
Region Search - Using geographic terms for spatial specification, e.g. Greenland, Antarctica, Alaska etc.
2/24/2019
2008 UWG

10. Target Capabilities - Continued
Display data in Polar coordinates - such as Polar Stereo
Linked List & Map - Dynamically link the top listed granule to the top displayed thumbnail
Analyze, Plot & Animate - Give the user the chance to work with the data.
On demand subsetting - select just the data in the region of interest.
Dual data display - Allow comparisons by time, product and location.
Multi-format output - Give it to the user in the format they need.
Subscription - Allow users to get new data as available.
User modeling - Allow users to build their own processes, models and plug-ins to extend the system. (machine to machine)
2/24/2019
2008 UWG

11. Capabilities - Comparison
System
WIST
CDC
Giovanni
DADDI
NEO
RangeView
Arctic RIMS
Data Catalog Explorer
Agency
NASA
NOAA
NASA Goddard
NSIDC
University of Arizona
University of New Hamp.
Alaska Ocean Observing
Query & Map Display N Y
Polar View
Value Filter
Y/N
Periodic
Multi-Data Selection
Regions
Linked List & Map
Analyze, Plot & Animate
On Demand Subsetting
Dual Display
Multi-format Output
Subscription
User Modeling
2/24/2019
2008 UWG

12. Implementation Scenario of Arctic Ice Scenario at PODAAC and NSIDC
Extend Sea Ice Extent Map to be accessible through both PODAAC and NSIDC.
Single map, accessible from PODAAC and NSIDC.
Map interface is modified and maintained by NSIDC based on shared requirements from PODAAC and NSIDC
Provide local and remote access to data products identified by region selected via an interactive table.
PODAAC middle ware developed to allow access to products at both sites. Technology is operational from both sites and is modified and maintained by PODAAC based on shared requirements from PODAAC and NSIDC.
Provide Level 2 and Level 3 subsetting capability for all available products for the area of interest and based upon requirements for interoperability and data display and distribution.
PODAAC develops and extends L2, L3 subsetters for PODAAC products.
NSIDC develops and extends L2, L3 subsetters for NSIDC products.
Provide all products in a compatible form and format for display and further tool input.
PODAAC and NSIDC provide all products in an agreed form and format for display and further tool input and distribution.
Provide visualization capability for all selected products.
PODAAC and/or NSIDC develops visualization capability for product overlay to Ice Extent map based on agreed upon formats and requirements.
Provide DataCasting availability at both sites for notification of products
JPL developed Datacasting will be ported and configured for NSIDC by PODAAC.
Provide a single User Interface accessible from both sites that integrates the Sea Ice Extent Map, InteractiveTable of Products, visualization capability, format conversion, datacasting and product delivery.
Interface is developed and maintained by NSIDC based upon requirements from both PODAAC and NSIDC.
Provide machine to machine accessible products from both NSIDC and PODAAC
NSIDC and PODAAC select a single point of access for user selected products.
FTP directory specific to the user selection located at one or the other site.
2/24/2019
July 16-17, 2008
2008 UWG
PO.DAAC Review, NASA HQ 12