chlorophyll_marxan

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
The British Columbia Marine Conservation Analysis (BCMCA), a Tides Canada Initiatives Project / Scitech Environmental Consulting
Publication_Date: Unpublished Material
Title: chlorophyll_marxan
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage:
\\vancouverserver\GIS\BCMCA\data4Marxan_May2010\Mammals\mammal_marxan_features.mdb
Description:
Abstract:
The British Columbia Marine Conservation Analysis (BCMCA) is a collaborative project assembling and analyzing spatial information about Canada's Pacific Ocean. The overall goal of the BCMCA is to identify marine areas of high conservation value and marine areas important to human use. Results of the project are intended to inform and help advance marine planning initiatives in BC by providing collaborative, peer-reviewed scientific analyses based on the best ecological and human use spatial data at scales relevant to a BC coast-wide analysis.
Purpose:
The purpose of this dataset is to identify areas of high chlorophyll concentration on the BC coast as a surrogate for areas of high primary productivity and a proxy for potentially important foraging areas for some seabirds and marine mammals. Data presented in 2x2 km planning units for MARXAN analysis.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2003-2006
Currentness_Reference:
REQUIRED: The basis on which the time period of content information is determined.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -139.382424
East_Bounding_Coordinate: -121.180445
North_Bounding_Coordinate: 56.051980
South_Bounding_Coordinate: 45.979698
Keywords:
Theme:
Theme_Keyword_Thesaurus:
REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.
Theme_Keyword: Chlorophyll
Theme_Keyword: BCMCA
Place:
Place_Keyword: Canadian Pacific EEZ
Place_Keyword: British Columbia
Temporal:
Temporal_Keyword: 2003-2006
Access_Constraints:
This dataset is subject to the terms and conditions of the data use agreements for the source datasets.
Use_Constraints:
This dataset is subject to the terms and conditions of the data use agreements for the source datasets.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Karin Bodtker
Contact_Organization: BCMCA
Contact_Position: Co-Chair
Contact_Address:
Address_Type: mailing and physical address
Address: 1405-207 W. Hastings St.
City: Vancouver
State_or_Province: BC
Postal_Code: V6B 1H7
Contact_Voice_Telephone: (604) 696-5044
Contact_Electronic_Mail_Address: kbodtker@livingoceans.org
Data_Set_Credit: BCMCA / Scitech Environmental Consulting
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
MODIS images contain values from 0-255 and are global in coverage. This effectively limits the resolution of this attribute to one of 256 possible global values. The number of unique values in BC waters was 126, ranging from 0.24 to 63.8. While this limits the precision of these data, the accuracy can be assumed to be 0.1 units.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Original data had a raster resolution of 4km. Imported data were converted to a 500m grid using the nearest neighbour technique to preserve true data values. While the precision of the data remains 4km, the data rectifies well with other data sets in the study area. The 500x500m model therefore likely provides good horizontal accuracy.
Lineage:
Source_Information:
Source_Contribution:
OceanColor WEB - Chlorophyll (Aqua-MODIS) - <http://seadas.gsfc.nasa.gov>
Source_Information:
Source_Contribution: BCMCA 2 km x 2 km planning units for the Canadian Pacific EEZ.
Process_Step:
Process_Description:
Original data acquired from OceanColor WEB as binary hdf files. HDF files were imported to Idrisi software using hdf import function. The Idrisi rasters were exported as float files and imported into ArcGIS via float to raster conversion. The Arc rasters were then projected to the Albers projection and clipped to the extents of the study area, resampled to match the 500m grid cell size, and snapped to the bathymetry layer. The original MODIS data are scaled from 0-255. The values were converted to chlorophyll concentration values using the appropriate pixel value to concentration equation obtained from the Aqua-MODIS website. The values were scaled up by 1000 for the calculation so that sufficient precision was maintained (the ArcGIS operator rounded the results of the calculation).
Process_Date: 2007
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Edward Gregr
Contact_Organization: Scitech Environmental Consulting
Process_Step:
Process_Description:
Data received by BCMCA as a float file. Float converted to raster using ArcGIS conversion tool
Process_Date: March 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carrie Robb
Contact_Organization: Living Oceans Society (for BCMCA)
Contact_Position: GIS Specialist
Process_Step:
Process_Description:
Raster was converted to a point file using the ArcGIS conversion tool. Points with a value greater than 30 mg/m3 were removed following the advice of the data provider.
Source_Used_Citation_Abbreviation: O:\BCMCA\Data_Processed\Physical\bc_chloro\metadata.xml
Process_Date: April 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carrie Robb
Contact_Organization: Living Oceans Society (for BCMCA)
Contact_Position: GIS Specialist
Process_Step:
Process_Description:
A spatial join was used to join the chlorophyll points to the BCMCA planning units. The average of all of the points within a planning unit was calculated.
Source_Used_Citation_Abbreviation: O:\BCMCA\Data_Processed\Physical\bc_chloro_point.shp.xml
Process_Date: April 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carrie Robb
Contact_Organization: Living Oceans Society (for BCMCA)
Contact_Position: GIS Specialist
Process_Step:
Process_Description: Unit ID updated to match new BCMCA planning unit IDs
Source_Used_Citation_Abbreviation:
O:\BCMCA\Data_Andy_temp_June07\MammalsMetadata\chlorophyll_marxan.xml
Process_Date: June 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Andy Pettersson
Contact_Organization: BCMCA
Contact_Position: GIS Contractor
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 120499
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 2600
Column_Count: 2536
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 50.000000
Standard_Parallel: 58.500000
Longitude_of_Central_Meridian: -126.000000
Latitude_of_Projection_Origin: 45.000000
False_Easting: 1000000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000606
Ordinate_Resolution: 0.000606
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: chlorophyll_marxan
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Unit_ID
Attribute:
Attribute_Label: SHAPE_AREA
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: UNIT_ID
Attribute_Definition: BCMCA Planning Unit ID
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Count_
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Avg_GRID_C
Attribute_Definition: Average value of chlorophyll (mg/m3)
Attribute:
Attribute_Label: ID
Attribute_Definition: Marxan ID
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: British Columbia Marine Conservation Analysis
Contact_Instructions: See www.bcmca.ca for distribution details
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 7.949
Metadata_Reference_Information:
Metadata_Date: 20100714
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Living Oceans Society (for BCMCA)
Contact_Person: Carrie Robb
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 1405-207 W. Hastings St.
City: Vancouver
State_or_Province: BC
Postal_Code: V6B 1H7
Contact_Voice_Telephone: (604) 696-5044
Contact_Electronic_Mail_Address: crobb@livingoceans.org
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Thu Aug 26 15:07:16 2010