Metadata
also available as
Identification_Information:
Citation:
Citation_Information: Latifovic, R.
Originator: R. Latifovic NRCan ESS Program “Enhancing Resilience in a Changing Climate”
Publication_Date: 2006/08
Title:
Geospatial_Data_Presentation_Form: Raster Digital Data
Publication_Information:
Publication_Place:
Publisher: Natural Resources
Other_Citation_Details:
This level-2c product was created using data
reprocessing method developed at CCRS. The respective contributions of the
above individuals and agencies to completing this data set are greatly
appreciated.
Online_Linkage: <http://dweb.ccrs.nrcan.gc.ca/rcvcc/index.html>
Larger_Work_Citation:
Citation_Information:
Originator:
Government of Canada\Natural Resources
Canada\Earth Sciences Sector\Canada Centre for Remote Sensing\ESS Program
"Reducing
Publication_Date: 2006/08/01
Title:
Geospatial_Data_Presentation_Form: Raster Digital Data
Publication_Information:
Publication_Place:
Publisher: Natural Resources
Other_Citation_Details:
This data set is produced by the Program: ERCC - Project: Earth Science for National Scale Characterization of
Climate Change Impacts on
Description:
Abstract:
As part of the climate change research, data
from the SPOT/VEGETATION instrument are systematically corrected for period
1998-2005 and provided in this archive. The VGT archive contains observations
acquired by the VEGETATION sensors 1 and 2 onboard SPOT 4 and 5 satellites.
Initial data type 10-day S10 composites provided by CNES and pre-processed at
VITO (Belgium) in full resolution (1km) were re-projected into standard LCC map
projection and further corrected for BRDF effect and cloud contamination.
Growing seasons 1998-2005 are presented with twenty 10-day composites from
April 11, to October 31. Each composite contains four at-surface apparent
reflectance bands: blue (0.43-0.47 mm), red (0.61-0.68 mm), near infrared (0.78-0.89 mm), and shortwave infrared (1.58-1.75mm) and two data layers containing NDVI and
Cloud mask. The 10-day composite data were reprocessed following CCRS
post-seasonal correction. This improved product is used in land cover and
climate change studies to generate various high-level products such as Fraction
of Photosynthetically Active Radiation (FPAR) and
Leaf Area Index (LAI).
Georeferencing:
Upper left geographic: 177d17'32.31" W;
66d54'22.82" N
Lower right geographic:
62d32'49.65" W; 34d18'05.61" N
Upper left geocoded:
-2600000.000 E; 10500000.000 N
Lower right geocoded:
3100000.000 E; 5700000.000 N
True origin: 95d00'00.0000"W;
0d00'00.0000"N
Pixel Information: Each pixel value is
contained in a 2-byte (16-bit unsigned integer); pixel size, horizontal
resolution: 1000m; pixel size, vertical resolution: 1000m
Image Size: 5700 pixels x 4800 lines
Purpose:
The VGT composites are surface reflectance
measurements free of residual errors (i.e., effects not representing the
surface under uniform illumination and viewing conditions) as possible.
Measurements are normalized to nadir-viewed images obtained under cloud-free
conditions. The data sets portray land surface features only, without being
obscured by interfering effects. The product is used in various land cover,
environmental monitoring and climate change studies, for generating specialized
spatial data products such as detailed land cover and biophysical parameter
maps of Fraction of Photosynthetically Active
Radiation (FPAR), Leaf Area Index (LAI) required for impact assessment
studies. (<http://www.ccrs.nrcan.gc.ca/ccrs/tekrd/rd/apps/em/veg/emvege.html>).
Supplemental_Information: Language of dataset: English
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1998/04/11
Ending_Date: 2005/10/31
Currentness_Reference: Publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -142
East_Bounding_Coordinate: -52
North_Bounding_Coordinate: 83
South_Bounding_Coordinate: 41
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD
Theme_Keyword: EARTH SCIENCE > Biosphere > Vegetation
> Vegetation Index
Theme:
Theme_Keyword_Thesaurus: userDefined
Theme_Keyword: CLIMATE CHANGE
Theme_Keyword: ENVIRONMENTAL CHANGE
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: VGETATION S10
Theme_Keyword: SPOT
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CanadaGlobal Regions
> Mid-latitude
Place_Keyword: Global Regions >
Place_Keyword: Global Regions > Northern Hemisphere
Place_Keyword: Global Regions >
Place_Keyword: Countries >
Place_Keyword: Earth Science > Inner Atmosphere > Land
Surface
Place:
Place_Keyword_Thesaurus: derived
Place_Keyword:
Place_Keyword:
Place_Keyword:
Place_Keyword:
Place_Keyword:
Place_Keyword:
Place_Keyword:
Place_Keyword:
Place_Keyword:
Place_Keyword:
Place_Keyword:
Place_Keyword:
Place_Keyword:
Access_Constraints: None
Use_Constraints: Her
Majesty the Queen in Right of
Point_of_Contact:
Contact_Information:
Contact_Person_Primary: Rasim Latifovic
Contact_Person: Rasim Latifovic
Contact_Organization: Natural Resources Canada\Canada Centre for
Remote Sensing
Contact_Position: Research Scientist
Contact_Address:
Address_Type: Mailing and physical
Address:
City:
State_or_Province:
Postal_Code: K1A 0Y7
Country:
Contact_Voice_Telephone: +01-613-947-1816
Contact_Facsimile_Telephone: +01-613-947-1385
Contact_Electronic_Mail_Address: Rasim.Latifovic@CCRS.NRCan.gc.ca
Data_Set_Credit: R. Latifovic
Data_Quality_Information:
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 1.1 km
Horizontal_Positional_Accuracy_Explanation:
The VGT-sensor registers 1728 pixels in line,
with a sub-nadir resolution of 1.15 km and a swath with of about 2200 km. Given
the orbital frequency, this results in a complete
daily coverage of the Canadian land surface. The VGT-sensor uses the push-broom
technology, in which an entire scan line is simultaneously registered by a
linear array of 1728 fixed detectors. This reduces the geometrical deformations
near the image edges. The data are geometrically corrected at
the sub-pixel accuracy.
Lineage:
Process_Step:
Process_Description:
The processing of the raw VGT-data at CTIV
includes the following steps:
Step 1: Conversion to 16U binary format
Step 2: Reprojection
to standard Lambert Conformal Conic projection.
Step 3: Compute NDVI for surface reflectance.
Step 4: Create cloud/contaminated pixel mask.
Step 5: BRDF sampling and coefficient
derivation.
Step 7: BRDF normalization.
Step 8: Seasonal interpolation for cloud and
missing values.
Source_Used_Citation_Abbreviation:
Latifovic, R., Cihlar,
J., Chen, J. A Comparison of BRDF Models for the Normalization of Satellite Optical
Data to a Standard Sun-Target-Sensor Geometry; IEEE Transactions on Geoscience & Remote Sensing ,
Vol. 41, No 8, July , 2003 , pp. 1889-1898
Cihlar, J., Latifovic, R., Chen, J., Trishchenko, a., Du, Y., Fedosejevs,
g., Guindon. B. Systematic corrections of AVHRR image
composites for temporal studies. Remote Sensing of Environment 89 (2004)
217-233
Process_Date: 2006
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 4800
Column_Count: 5700
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert Conformal Conic
Lambert_Conformal_Conic:
Standard_Parallel:
1st Standard Parallel: 49 2nd Standard
Parallel: 77
Longitude_of_Central_Meridian: -95
Latitude_of_Projection_Origin: 0
False_Easting: 0.000
False_Northing: 0.000
Geodetic_Model:
Horizontal_Datum_Name: NAD83
Ellipsoid_Name: GRS 1980
Entity_and_Attribute_Information:
Detailed_Description: BRDF normalized surface reflectance (blue
0.43-0.47 μm)
Attribute:
Attribute_Label: B00_RESUR_BRDF_INT.IMG
Attribute_Definition: Numeric code ranging from 0 to 2000
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: B0= (numeric code/2000)
Enumerated_Domain_Value_Definition:
Detailed_Description: BRDF normalized surface reflectance (red 0.61-0.68 μm)
Attribute:
Attribute_Label: B02_RESUR_BRDF_INT.IMG
Attribute_Definition: Numeric code ranging from 0 to 2000
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: B2= (numeric code/2000)
Enumerated_Domain_Value_Definition: surface reflectance
Detailed_Description: BRDF normalized surface reflectance (red 0.78-0.89 μm)
Attribute:
Attribute_Label: B03_RESUR_BRDF_INT.IMG
Attribute_Definition: Numeric code ranging from 0 to 1000
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: B3= (numeric code/2000)
Enumerated_Domain_Value_Definition: surface reflectance
Detailed_Description: BRDF normalized surface reflectance (red 1.58-1.75 μm)
Attribute:
Attribute_Label: B04_RESUR_BRDF_INT.IMG
Attribute_Definition: Numeric code ranging from 0 to 1000
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: B4= (numeric code/2000)
Enumerated_Domain_Value_Definition: surface reflectance
Detailed_Description:
Normalized Difference Vegetation Index
Attribute:
Attribute_Label: NDVI_RESUR_BRDF_INT.IMG
Attribute_Definition: Numeric code ranging from 0 to 20000
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NDVI= (numeric code/10000)-1
Enumerated_Domain_Value_Definition:
Detailed_Description: Cloud mask
Attribute:
Attribute_Label: RCECANT.IMG
Attribute_Definition: 255-clear sky; 0-replaced values
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
Enumerated_Domain_Value_Definition:
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Rasim Latifovic
Contact_Organization: Natural Resources Canada\Canada Centre for
Remote Sensing
Contact_Position: Research Scientist
Contact_Address:
Address_Type: Mailing and physical address
Address:
City:
State_or_Province:
Postal_Code: K1A 0Y7
Country:
Contact_Voice_Telephone: +01-613-947-1816
Contact_Facsimile_Telephone: +01-613-947-1385
Contact_Electronic_Mail_Address: Rasim.Latifovic@CCRS.NRCan.gc.ca
Standard_Order_Process:
Non-digital_Form: Not Applicable
Digital_Form:
Digital_Transfer_Information:
Format_Name: binary
Format_Information_Content:
The image files contain 5700 pixels in each of
4800 lines. For the final data layers, each pixel value is contained in a
2-byte (16-bit unsigned integer) field ordered as most significant (high-order)
byte first. Thus, each image file record is 11400 bytes in length. The images are oriented such that pixel 1,
line 1 is in the upper left-hand corner (i.e., northwest) of the screen
display. Pixels and lines progress from left to right and top to bottom so that
pixel n, line n is in the lower right-hand corner.
Pixel size, horizontal resolution: 1000m
Pixel size, vertical resolution: 1000m
Digital_Transfer_Option:
Offline_Option:
Offline_Media: DVD-ROM
Metadata_Reference_Information:
Metadata_Date: 2006/08
Metadata_Review_Date: One year after creation date
Metadata_Future_Review_Date: 2007/08
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Rasim Latifovic
Contact_Organization: Natural ResourcesCanada\Canada
Centre for Remote Sensing
Contact_Position: Research Scientist
Contact_Address:
Address_Type: Mailing and physical address
Address:
City:
State_or_Province:
Postal_Code: KIA 0Y7
Country:
Contact_Voice_Telephone: +01-613-947-1816
Contact_Facsimile_Telephone: +01-613-947-1385
Contact_Electronic_Mail_Address: Rasim.Latifovic@CCRS.NRCan.gc.ca
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial
Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: Local Time