Atmospheric Representations in SEDRIS

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Atmospheric Representations in SEDRIS
Louis A. Hembree Naval Research Laboratory
Monterey, CA [phone] hembree_at_nrlmry.navy.m
il
Rob Cox SAIC 12479 Research Parkway Suite
600 Orlando, FL 32826 407-207-3609 ROBERT.M.COX_at_cp
mx.saic.com
Valerie Pastor SAIC 550 Camino El Estero Suite
205 Monterey, CA 93940 831-649-5242 valerie.l.pas
tor_at_cpmx.saic.com
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TOPICS

• SEDRIS TECHNOLGY COMPONENTS
• EDCS
• ATMOSPHERIC GRID MAPPING

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SEDRIS Technology Components

• Data Representation Model (DRM)
• Provides syntax and structural semantics for
  databases
• Environmental Data Coding Standard (EDCS)
• Provides object/thing level semantics
• Spatial Reference Model (SRM)
• Robust description of the coordinate systems,
  combined with an accurate, efficient, fast
  software implementation
• SEDRIS Transmittal Format (STF)
• Platform independent storage and transmission of
  databases
• Application Programmers Interface (API)
• Allows ease of access
• Lowers the barrier-to-entry in software
  development

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Data Coding Standard

• Unifies characterizations of environmental
  things
• Whether individual primitives or structured
  collections
• Regardless of how represented --
• Feature or Geometry or Data Table or Model or ...
• Separates enumerations from Data Representation
  Model
• Evolve at different rates
• Allows better leverage of (and coordination with)
  external standards
• Increased flexibility/extensibility
• Answers three types of questions
• 1. What is it?
• ? SEDRIS Environmental Classification Code (ECC)
• 2. What are its additional clarifying
  characteristics?
• ? SEDRIS Environmental Attribute Code (EAC)
• 3. How does it deviate from normality?
• ? SEDRIS Environmental State Code (ESC)

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ECC Classifications (and Features)
1. What is it? building, river/stream, air
warning light, ocean floor
Animal?
Vegetable?
Weather?
Water?
Mineral?
Vehicle?
Structure?
Celestial?
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EAC Attributes (and Values)
1. What is it? building, river/stream, air
warning light, ocean floor
2. Additional clarifying characteristics? lighth
ouse, 1.5m, red, temperature, rain
Vegetation Type?
Snow
Overhead Clearance?
Building Function?
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ESC States
1. What is it? building, river/stream, air
warning light, ocean floor
2. Additional clarifying characteristics? lighth
ouse, 1.5m, red, coral
3. How does it deviate from normality? 30
damage, 5.5m, switched off, dead coral
Lit?
Dry, Wet, Icy
Damaged?
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Related Data Coding Standards

• Coordinated with DISA future conceptual models
• Defense Data Dictionary System (DDDS) / DoD Data
  Model (DDM)
• USIGS Conceptual Data Model (UCDM)
• Joint METOC Conceptual Data Model (JMCDM)
• EDCS is not inconsistent with DDDS/DDM
• However only as consistent as current data
  permits(SEDRIS will evolve in concert with
  evolving data sources)
• SEDRIS experience will provide MS inputs to DISA
  process

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Mapping Weather Parameters to EDCS

• Reviewed ASNE requirements for weather parameters
• Crosswalk between requirements and EDCS and
  DDDS/JMCDM
• Compared and reviewed definitions
• Identified missing EDCS
• Created a document that summarized all
  discrepancies and asked for clarification from
  ASNE
• Submitted SCRs to add or update EDCS codes

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Example EACs
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MAPPING
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Condensed SEDRIS DRM
POINT DATA
COMMON
ORGANIZATION
GRIDS TABLES
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Atmospheric Grid MappingSEDRIS 2.5.3
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Time_Related_Geometry
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Property_Grid
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Axes
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Table_Property_Descriptions
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CURRENT STATUS

• All current required weather parameters have
  either been added or are in an SCR to be added
• Beta version of GRIB to SEDRIS mapping and
  translation program available
• Mapping document drafted
• VIS5D viewer has been extended

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PLANS

• Update GRIB to SEDRIS to support next release of
  SEDRIS in April
• Develop a SEDRIS to GRIB converter for METOC
  parameters
• Improve STF to VIS5D for METOC data
• DATSAV3 to STF for standard METOC observations