towards a global sea ice mapping system international ice charting working group – v hamburg –...
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Towards a Global Sea Ice Towards a Global Sea Ice Mapping SystemMapping System
International Ice Charting Working International Ice Charting Working Group – VGroup – V
Hamburg – April 19-23, 2004Hamburg – April 19-23, 2004
ISIS - the IT PerspectiveISIS - the IT Perspective
Virtual Ice Charting SystemVirtual Ice Charting System
Archive
BrowserInterface
Distribution
Ingest Production
Ice AnalystApplication
DatabaseDatabase
Database
Click on the boxes for more information
DataAcquisition
System
ProductCreation(ArcGIS)
ISISViewer
(Imagine)
WorkstationTemporary
StorageBrowser
ProductDistribution
System
Archive(coverages &simple layers)
Catalogue(coverages)
PRODUCTION
users
data
ISIS - todayISIS - today
ArcSDE
DataAcquisition
System
ProductCreation(ArcGIS)
ISISViewer
(Imagine)
WorkstationTemporary
StorageBrowser
ProductDistribution
System
Archive(complete
geodatabase)
Catalogue
PRODUCTION
users
data
ISIS - JuneISIS - June
ArcSDE
CoveragesCoverages vs Geodatabase vs Geodatabase
Metadata…
..
…
Metadata…
..
…
Coverages vs Coverages vs GeodatabaseGeodatabase
Metadata…
..
…Metadata
…
..
…
Metadata…
..
…
ISIS – Future?ISIS – Future?
users
data
DataAcquisition
System
ProductCreation(ArcGIS)
ISISViewer
(Imagine)
WorkstationTemporary
StorageBrowser
ProductDistribution
SystemCatalogue
PRODUCTION
GeodatabaseArchive
ArcSDE
GeodatabaseArchive
ArcSDE
GeodatabaseArchive
ArcSDE
GeodatabaseArchive
ArcSDE
The virtual world ice The virtual world ice serviceservice
Connecting DatabasesConnecting Databases
Geodatabase
ArcSDE
Geodatabase
ArcSDE
Oracle OracleTODAY
Browser Browser
Connecting DatabasesConnecting Databases
Geodatabase
ArcSDE
Geodatabase
ArcSDE
Browser Browser
FUTURE
XML
Oracle OracleAccessFlat FileSybaseFlat FileSQLServer Informix
Connecting DatabasesConnecting Databases
Geodatabase
ArcSDE
Geodatabase
ArcSDE
Browser Browser
WebService
WebServiceInternetInternet
Common Schema – The KeyCommon Schema – The Key
Database schema is a description of Database schema is a description of a particular collection of data, using a particular collection of data, using a given data model. a given data model.
Objects e.g. Ice PolygonObjects e.g. Ice Polygon Attributes e.g. Total ConcentrationAttributes e.g. Total Concentration
Attribute_Label: Attribute_Label: CTCT Attribute_Definition: Attribute_Definition: Total Concentration.Total Concentration. Attribute_Definition Source: Attribute_Definition Source: SIGRID-3SIGRID-3 Attribute Domain Values:Attribute Domain Values:
Ice Free 00 Less than 1/10 (open water) 01 Bergy Water 02 1/10 10 2/10 20 3/10 30 4/10 40 5/10 50 6/10 60 7/10 70 8/10 80 9/10 90 10/10 92 9/10–10/10 91 8/10 – 9/10 89 8/10 – 10/10 81 7/10 – 9/10 79 etc
Another SchemaAnother SchemaECDIS Ice ObjectsECDIS Ice Objects
Code:Code: ICEACT;ICEACT; Reference:Reference: "Workshop on International Standards for Ice Information in "Workshop on International Standards for Ice Information in
ECDIS," June 27-ECDIS," June 27- 29, 1995, Canada/Germany/United States.29, 1995, Canada/Germany/United States. Input Type:Input Type: EE Expected Input:Expected Input: IDID MeaningMeaning 1 1 1/101/10 22 2/102/10 33 3/103/10 44 4/104/10 55 5/105/10 6 6 6/106/10 77 7/107/10 88 8/108/10 99 9/109/10 1010 <1/10 - 2/10<1/10 - 2/10 1111 1/10 - 3/101/10 - 3/10 1212 4/10 - 6/104/10 - 6/10 1313 7/10 - 8/107/10 - 8/10 1414 9/10 - <10/109/10 - <10/10 1515 10/10 with openings10/10 with openings 1616 10/10 without openings10/10 without openings 1717 <1/10<1/10 1818 Undetermined or UnknownUndetermined or Unknown Definition:Definition: ICEACT specifies the total concentration of ice in an area (‘Ct’).ICEACT specifies the total concentration of ice in an area (‘Ct’). Remarks:Remarks: This attribute represents the ratio expressed in tenths describing the area This attribute represents the ratio expressed in tenths describing the area
of of the water surface covered by ice as a fraction of the whole area.the water surface covered by ice as a fraction of the whole area.
ISIS SchemaISIS Schema Attribute_Label: Attribute_Label: CtCt Attribute_Definition: Attribute_Definition: Total Concentration.Total Concentration. Attribute_Definition Source: Attribute_Definition Source: MANICEMANICE Attribute Domain Values:Attribute Domain Values:
Less than 1/10 (open water) 0 1/10 1 2/10 2 3/10 3 4/10 4 5/10 5 6/10 6 7/10 7 8/10 8 9/10 9 9+/10 9+ 10/10 10
Short Term Benefit of a Short Term Benefit of a Common Schema – Code Common Schema – Code
SharingSharing$Sub_CTotal = CValue($EggCodes{"Ca"}) + CValue($EggCodes{"Cb"}) + CValue($EggCodes{"Cc"}) + $Cd;if ($Sub_CTotal eq 0) { $CTotal = CValue($EggCodes{"Ct"})} else { $CTotal = $Sub_CTotal }print "Total of Ca + Cb + Cc + Cd is " . "$CTotal \n";
if ($CTotal > 10) { EndProgram($BAD_ARG, "Ca + Cb + Cc + Cd has exceeded 10 tenths");}if ( CValue($EggCodes{"Ct"}) <> $CTotal) { EndProgram($BAD_ARG, "Ct must equal Ca + Cb + Cc + derived Cd");}
Proposal for a Near Term Proposal for a Near Term Objective Toward a Global Ice Objective Toward a Global Ice
Mapping SystemMapping System
Within the next 2 years, all Within the next 2 years, all participating Ice Services implement participating Ice Services implement one common database schema in one common database schema in their ice mapping systemstheir ice mapping systems
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