BCMCA_ECO_Mammals_Chlorophyll_DATA

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

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Publication_Date: Unpublished Material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: BCMCA_ECO_Mammals_Chlorophyll_DATA

Geospatial_Data_Presentation_Form: vector digital data

Online_Linkage:

\\vancouverserver\gis\BCMCA\Repository\data_processed_namesStandardized\Mammals\BCMCA_ECO_Mammals_Chlorophyll_DATA.shp

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 (less than 30 mg/m3) 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.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2003-2006

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -141.142165

East_Bounding_Coordinate: -121.497173

North_Bounding_Coordinate: 56.935234

South_Bounding_Coordinate: 44.548653

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: British Columbia Marine Conservation Analysis

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 Vista Version 6.1 (Build 7600) ; ESRI ArcCatalog 9.3.1.3000

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>

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 or equal to 30 mg/m3 were removed.

Source_Used_Citation_Abbreviation: O:\BCMCA\Data_Processed\Physical\bc_chloro\metadata.xml

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: Dataset copied.

Process_Date: 20100409

Process_Time: 16453400

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

O:\BCMCA\Data_Processed\Physical\bc_chloro_point_lessThan30mg_m3

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

O:\BCMCA\Repository\data_processed_namesStandardized\Physical\BCMCA_ECO_Physical_Chlorophyll_DATA

Process_Date: 20100923

Process_Time: 09111200

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point

Point_and_Vector_Object_Count: 4169581

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: 0.000000

Ordinate_Resolution: 0.000000

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: BCMCA_ECO_Mammals_Chlorophyll_DATA

Attribute:

Attribute_Label: FID

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: POINTID

Attribute:

Attribute_Label: GRID_CODE

Attribute_Definition: Chlorophyll concentration (mg/m3)

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: 111.340

Metadata_Reference_Information:

Metadata_Date: 20100923

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