ERDDAP > info > mpoOrthophotosQuebecCoasts

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   set  data   graph     files  Mosaics of Aerial Photos of the Coasts of Quebec: Ressources List | Mosaïques de photos
aériennes des côtes du Québec : Liste des ressources 		   ?            M   background (external link) RSS Subscribe
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mpoOrthophotosQuebecCoasts

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL contributor_name String Rosalie Davreux, Olivier Parent
attribute NC_GLOBAL Conventions String COARDS,CF-1.11,ACDD-1.3,0, NCCSV-1.2
attribute NC_GLOBAL creator_identifier String https://ror.org/02qa1x782 (external link)
attribute NC_GLOBAL creator_name String Fisheries and Oceans Canada
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL data_curator String St. Lawrence Global Observatory
attribute NC_GLOBAL data_curator_fr String Observatoire global du Saint-Laurent
attribute NC_GLOBAL defaultDataQuery String &time>=min(time)
attribute NC_GLOBAL infoUrl String https://catalogue.ogsl.ca/fr/dataset/ca-cioos_1e8fbfea-fd72-408b-bce1-d2c20ab645bc (external link)
attribute NC_GLOBAL institution String Fisheries and Oceans Canada
attribute NC_GLOBAL institution_fr String Pêches et Océans Canada
attribute NC_GLOBAL institution_identifier String https://ror.org/02qa1x782 (external link)
attribute NC_GLOBAL keywords String Aerial photography, Eelgrass, Mosa\\u00efcs, Quebec
attribute NC_GLOBAL keywords_fr String Mosaïques, Photos aériennes, Québec, Zostère
attribute NC_GLOBAL keywords_vocabulary String NASA Global Change Master Directory (GCMD) Science Keywords and homemade keywords
attribute NC_GLOBAL license String Open Government Licence - Canada
attribute NC_GLOBAL licenseUrl String https://open.canada.ca/en/open-government-licence-canada (external link)
attribute NC_GLOBAL platform String research aeroplane
attribute NC_GLOBAL platform_vocabulary String https://vocab.nerc.ac.uk/collection/L06/current/ (external link)
attribute NC_GLOBAL publisher_email String info at ogsl.ca
attribute NC_GLOBAL publisher_name String St. Lawrence Global Observatory
attribute NC_GLOBAL publisher_name_fr String Observatoire global du Saint-Laurent
attribute NC_GLOBAL publisherID String https://ror.org/03wfagk22 (external link)
attribute NC_GLOBAL repository_data_folder_URI String https://waf-cc.prod.ogsl.ca/data/ckan/mpo/ca-cioos_c4d6031d-6570-4749-816c-c2447e2fff7b/orthophotos/orthophotos_geotiff/ (external link)
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_nerc_vocabulary String The NERC Vocabulary Server (NVS)
attribute NC_GLOBAL standard_name_other_vocabulary String dwc: Darwin Core List of Terms (v 2023-09); dcmi: Dublin Core Metadata Initiative Metadata Terms (v 2020-01); ac: Audiovisual Core Term List (v 2023-09-05)
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v86
attribute NC_GLOBAL subsetVariables String marine_region, year, grid_mapping_geographic_crs, location
attribute NC_GLOBAL summary String These *raster* mosaics were constructed using aerial photos acquired by the Marine Conservation and Planning Division (MCPD), DFO (Fisheries and Oceans Canada) Quebec Region.
The photos, captured vertically along flight lines previously supplied by DFO, were georeferenced and orthorectified with a ground resolution of 30 cm. An UltraCam Xp digital multi-spectral camera was used, mounted on an aircraft at an altitude of 16,500 metres, to obtain a swath of at least 4 km on the ground. An overlap of 60% to 80% was required to optimize the image during mosaicking.
Certain environmental criteria had to be met to ensure image homogeneity. The photos had to be taken as close as possible to low tide, synchronized with the period of the day when the sun's angle of elevation was greater than 25°, wind speed less than 20km/h, waves less than 1 metre high, and no cloud or fog under the aircraft. Water turbidity had to be taken into account to ensure identification of eelgrass in the water.
attribute NC_GLOBAL summary_fr String Ces mosaïques *raster* ont été construites avec les photos aériennes acquises par la division de la planification et conservation marine (DPCM), du MPO (Ministère Pêches et Océans Canada) région du Québec.
Les photos, captées verticalement en suivant les lignes de vols préalablement fournies par le MPO, ont été géoréférencées et orthorectifiées avec une résolution au sol de 30 cm. La caméra numérique multi-spectrale de type UltraCam Xp utilisée était placée sur un avion à 16 500 mètres d’altitude et permettait d’obtenir une fauchée d’au moins 4 km au sol. Un chevauchement de 60% à 80% était demandé afin d’optimiser l’image lors du mosaïquage.
Certains critères environnementaux devaient être respectés pour assurer l'homogénéité des images. La prise de photos devait suivre le plus près possible la marée basse, synchronisée avec la période du jour où l’angle d’élévation du soleil est supérieur à 25°, une vitesse du vent inférieur à 20km/h, des vagues de moins de 1 mètre ainsi que des conditions de nébulosité et de brouillard nulles sous l’avion. La turbidité de l’eau devait être prise en compte pour assurer l’identification des herbiers de zostère dans l’eau.
attribute NC_GLOBAL time_coverage_end String 2024-09-06
attribute NC_GLOBAL time_coverage_start String 2015-09-21
attribute NC_GLOBAL title String Mosaics of Aerial Photos of the Coasts of Quebec: Ressources List | Mosaïques de photos aériennes des côtes du Québec : Liste des ressources
attribute NC_GLOBAL waf_url String https://waf-cc.prod.ogsl.ca/data/ckan/mpo/ca-cioos_c4d6031d-6570-4749-816c-c2447e2fff7b/orthophotos/orthophotos_geotiff/ (external link)
variable marine_region   String  
attribute marine_region description String https://marineregions.org/ (external link)
attribute marine_region long_name String Standard location
attribute marine_region units String unitless
variable location   String  
attribute location long_name String Region
attribute location standard_name_dcim String location
attribute location standard_name_dcim_identifier String http://purl.org/dc/terms/Location (external link)
attribute location units String unitless
variable locality   String  
attribute locality long_name String locality
attribute locality standard_name_dwc String locality
attribute locality standard_name_dwc_identifier String http://rs.tdwg.org/dwc/terms/locality (external link)
attribute locality units String unitless
variable year   int  
attribute year actual_range int 2015, 2024
attribute year dwc_standard_name String year
attribute year dwc_standard_name_identifier String http://rs.tdwg.org/dwc/terms/year (external link)
attribute year ioos_category String Time
attribute year long_name String Year
attribute year standard_name String time
attribute year units String CCYY
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.4427936E9, 1.7255808E9
attribute time axis String T
attribute time coverage_content_type String coordinate
attribute time ioos_category String Time
attribute time long_name String Date of the overflight
attribute time nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute time nerc_standard_name String Date
attribute time source_name String date
attribute time standard_name String time
attribute time standard_name_identifier String https://vocab.nerc.ac.uk/collection/P07/current/CFSN0115/ (external link)
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time time_precision String 1970-01-01
attribute time units String seconds since 1970-01-01T00:00:00Z
variable time_coverage_start   String  
attribute time_coverage_start dcim_standard_name String coverage
attribute time_coverage_start dcim_standard_name_identifier String http://purl.org/dc/elements/1.1/coverage (external link)
attribute time_coverage_start ioos_category String Time
attribute time_coverage_start long_name String Beginning of period covered
attribute time_coverage_start nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute time_coverage_start nerc_standard_name String Date
attribute time_coverage_start standard_name String time
attribute time_coverage_start standard_name_identifier String https://vocab.nerc.ac.uk/collection/P07/current/CFSN0115/ (external link)
attribute time_coverage_start units String HH:mm
variable time_coverage_end   String  
attribute time_coverage_end dcim_standard_name String coverage
attribute time_coverage_end dcim_standard_name_identifier String http://purl.org/dc/elements/1.1/coverage (external link)
attribute time_coverage_end ioos_category String Time
attribute time_coverage_end long_name String End of period covered
attribute time_coverage_end nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute time_coverage_end nerc_standard_name String Date
attribute time_coverage_end standard_name String time
attribute time_coverage_end standard_name_identifier String https://vocab.nerc.ac.uk/collection/P07/current/CFSN0115/ (external link)
attribute time_coverage_end units String HH:mm
variable png_preview_URI   String  
attribute png_preview_URI file_format String png
attribute png_preview_URI fileAccessBaseUrl String https://waf-cc.prod.ogsl.ca/data/ckan/mpo/ca-cioos_c4d6031d-6570-4749-816c-c2447e2fff7b/orthophotos/orthophotos_compress_png/ (external link)
attribute png_preview_URI long_name String Non georeferenced photograph
attribute png_preview_URI standard_name_ac String ServiceAccessPoint
attribute png_preview_URI standard_name_ac_identifier String https://ac.tdwg.org/termlist/#ac_ServiceAccessPoint (external link)
attribute png_preview_URI units String unitless
variable accessURI   String  
attribute accessURI file_format String tif
attribute accessURI fileAccessBaseUrl String https://waf-cc.prod.ogsl.ca/data/ckan/mpo/ca-cioos_c4d6031d-6570-4749-816c-c2447e2fff7b/orthophotos/orthophotos_geotiff/ (external link)
attribute accessURI long_name String Georeferenced photograph
attribute accessURI standard_name_ac String accessURI
attribute accessURI standard_name_ac_identifier String http://rs.tdwg.org/ac/terms/accessURI (external link)
attribute accessURI units String unitless
variable extent   float  
attribute extent actual_range float 516.2, 14616.7
attribute extent ioos_category String Other
attribute extent long_name String File size
attribute extent units String MB
variable captureDevice   String  
attribute captureDevice ac_standard_name String captureDevice
attribute captureDevice ac_standard_name_identifier String http://rs.tdwg.org/ac/terms/captureDevice (external link)
attribute captureDevice description String Device or devices used to create the ressource
attribute captureDevice ioos_category String Other
attribute captureDevice long_name String Camera
attribute captureDevice standard_name_ac String captureDevice
attribute captureDevice standard_name_ac_identifier String http://rs.tdwg.org/ac/terms/captureDevice (external link)
attribute captureDevice units String unitless
variable grid_mapping_geographic_crs   String  
attribute grid_mapping_geographic_crs ioos_category String Location
attribute grid_mapping_geographic_crs long_name String Coordonnate reference system of the orthophotography file
attribute grid_mapping_geographic_crs units String unitless
variable geospatial_lat_max_NAD83   float  
attribute geospatial_lat_max_NAD83 actual_range float 46.97049, 5572930.0
attribute geospatial_lat_max_NAD83 colorBarMaximum double 90.0
attribute geospatial_lat_max_NAD83 colorBarMinimum double -90.0
attribute geospatial_lat_max_NAD83 dcim_standard_name String coverage
attribute geospatial_lat_max_NAD83 dcim_standard_name_identifier String http://purl.org/dc/elements/1.1/coverage (external link)
attribute geospatial_lat_max_NAD83 description String Northernmost latitude covered by the dataset
attribute geospatial_lat_max_NAD83 ioos_category String Location
attribute geospatial_lat_max_NAD83 long_name String Maximum latitude
attribute geospatial_lat_max_NAD83 source_name String geospatial_lat_max_NAD83
attribute geospatial_lat_max_NAD83 spatial_reference_system String NAD83/UTM zone 20N - EPSG:26920 - https://epsg.io/26920 (external link)
attribute geospatial_lat_max_NAD83 standard_name String latitude
attribute geospatial_lat_max_NAD83 standard_name_identifier String https://vocab.nerc.ac.uk/collection/P07/current/CFSN0600/ (external link)
attribute geospatial_lat_max_NAD83 units String degrees_north
variable geospatial_lat_min_NAD83   float  
attribute geospatial_lat_min_NAD83 actual_range float 46.83916, 5556191.0
attribute geospatial_lat_min_NAD83 colorBarMaximum double 90.0
attribute geospatial_lat_min_NAD83 colorBarMinimum double -90.0
attribute geospatial_lat_min_NAD83 dcim_standard_name String coverage
attribute geospatial_lat_min_NAD83 dcim_standard_name_identifier String http://purl.org/dc/elements/1.1/coverage (external link)
attribute geospatial_lat_min_NAD83 description String Southernmost latitude covered by the dataset
attribute geospatial_lat_min_NAD83 ioos_category String Location
attribute geospatial_lat_min_NAD83 long_name String Maximum latitude
attribute geospatial_lat_min_NAD83 spatial_reference_system String NAD83/UTM zone 20N - EPSG:26920 - https://epsg.io/26920 (external link)
attribute geospatial_lat_min_NAD83 standard_name String latitude
attribute geospatial_lat_min_NAD83 standard_name_identifier String https://vocab.nerc.ac.uk/collection/P07/current/CFSN0600/ (external link)
attribute geospatial_lat_min_NAD83 units String degrees_north
variable geospatial_lon_max_NAD83   float  
attribute geospatial_lon_max_NAD83 actual_range float -93916.64, 735647.9
attribute geospatial_lon_max_NAD83 colorBarMaximum double 180.0
attribute geospatial_lon_max_NAD83 colorBarMinimum double -180.0
attribute geospatial_lon_max_NAD83 dcim_standard_name String coverage
attribute geospatial_lon_max_NAD83 dcim_standard_name_identifier String http://purl.org/dc/elements/1.1/coverage (external link)
attribute geospatial_lon_max_NAD83 description String Easternmost longitude covered by the dataset
attribute geospatial_lon_max_NAD83 ioos_category String Location
attribute geospatial_lon_max_NAD83 long_name String Maximum latitude
attribute geospatial_lon_max_NAD83 spatial_reference_system String NAD83/UTM zone 20N - EPSG:26920 - https://epsg.io/26920 (external link)
attribute geospatial_lon_max_NAD83 standard_name String latitude
attribute geospatial_lon_max_NAD83 standard_name_identifier String https://vocab.nerc.ac.uk/collection/P07/current/CFSN0600/ (external link)
attribute geospatial_lon_max_NAD83 units String degrees_east
variable geospatial_lon_min_NAD83   float  
attribute geospatial_lon_min_NAD83 actual_range float -115271.1, 721001.8
attribute geospatial_lon_min_NAD83 colorBarMaximum double 180.0
attribute geospatial_lon_min_NAD83 colorBarMinimum double -180.0
attribute geospatial_lon_min_NAD83 dcim_standard_name String coverage
attribute geospatial_lon_min_NAD83 dcim_standard_name_identifier String http://purl.org/dc/elements/1.1/coverage (external link)
attribute geospatial_lon_min_NAD83 description String Westernmost longitude covered by the dataset.
attribute geospatial_lon_min_NAD83 ioos_category String Location
attribute geospatial_lon_min_NAD83 long_name String Maximum latitude
attribute geospatial_lon_min_NAD83 spatial_reference_system String NAD83/UTM zone 20N - EPSG:26920 - https://epsg.io/26920 (external link)
attribute geospatial_lon_min_NAD83 standard_name String latitude
attribute geospatial_lon_min_NAD83 standard_name_identifier String https://vocab.nerc.ac.uk/collection/P07/current/CFSN0600/ (external link)
attribute geospatial_lon_min_NAD83 units String degrees_east
variable geospatial_lat_max_WGS84   float  
attribute geospatial_lat_max_WGS84 actual_range float 46.97049, 50.84385
attribute geospatial_lat_max_WGS84 colorBarMaximum double 90.0
attribute geospatial_lat_max_WGS84 colorBarMinimum double -90.0
attribute geospatial_lat_max_WGS84 dcim_standard_name String coverage
attribute geospatial_lat_max_WGS84 dcim_standard_name_identifier String http://purl.org/dc/elements/1.1/coverage (external link)
attribute geospatial_lat_max_WGS84 description String Northernmost latitude covered by the dataset
attribute geospatial_lat_max_WGS84 ioos_category String Location
attribute geospatial_lat_max_WGS84 long_name String Maximum latitude
attribute geospatial_lat_max_WGS84 spatial_reference_system String WGS 84 - EPSG:4326 - https://epsg.io/4326 (external link)
attribute geospatial_lat_max_WGS84 standard_name String latitude
attribute geospatial_lat_max_WGS84 standard_name_identifier String https://vocab.nerc.ac.uk/collection/P07/current/CFSN0600/ (external link)
attribute geospatial_lat_max_WGS84 units String degrees_north
variable geospatial_lat_min_WGS84   float  
attribute geospatial_lat_min_WGS84 actual_range float 46.83916, 50.56082
attribute geospatial_lat_min_WGS84 colorBarMaximum double 90.0
attribute geospatial_lat_min_WGS84 colorBarMinimum double -90.0
attribute geospatial_lat_min_WGS84 dcim_standard_name String coverage
attribute geospatial_lat_min_WGS84 dcim_standard_name_identifier String http://purl.org/dc/elements/1.1/coverage (external link)
attribute geospatial_lat_min_WGS84 description String Southernmost latitude covered by the dataset
attribute geospatial_lat_min_WGS84 ioos_category String Location
attribute geospatial_lat_min_WGS84 long_name String Maximum latitude
attribute geospatial_lat_min_WGS84 spatial_reference_system String WGS 84 - EPSG:4326 - https://epsg.io/4326 (external link)
attribute geospatial_lat_min_WGS84 standard_name String latitude
attribute geospatial_lat_min_WGS84 standard_name_identifier String https://vocab.nerc.ac.uk/collection/P07/current/CFSN0600/ (external link)
attribute geospatial_lat_min_WGS84 units String degrees_north
variable geospatial_lon_max_WGS84   float  
attribute geospatial_lon_max_WGS84 actual_range float -70.71714, -59.01797
attribute geospatial_lon_max_WGS84 colorBarMaximum double 180.0
attribute geospatial_lon_max_WGS84 colorBarMinimum double -180.0
attribute geospatial_lon_max_WGS84 dcim_standard_name String coverage
attribute geospatial_lon_max_WGS84 dcim_standard_name_identifier String http://purl.org/dc/elements/1.1/coverage (external link)
attribute geospatial_lon_max_WGS84 description String Easternmost longitude covered by the dataset
attribute geospatial_lon_max_WGS84 ioos_category String Location
attribute geospatial_lon_max_WGS84 long_name String Maximum latitude
attribute geospatial_lon_max_WGS84 spatial_reference_system String WGS 84 - EPSG:4326 - https://epsg.io/4326 (external link)
attribute geospatial_lon_max_WGS84 standard_name String latitude
attribute geospatial_lon_max_WGS84 standard_name_identifier String https://vocab.nerc.ac.uk/collection/P07/current/CFSN0600/ (external link)
attribute geospatial_lon_max_WGS84 units String degrees_east
variable geospatial_lon_min_WGS84   float  
attribute geospatial_lon_min_WGS84 actual_range float -71.10828, -59.47301
attribute geospatial_lon_min_WGS84 colorBarMaximum double 180.0
attribute geospatial_lon_min_WGS84 colorBarMinimum double -180.0
attribute geospatial_lon_min_WGS84 dcim_standard_name String coverage
attribute geospatial_lon_min_WGS84 dcim_standard_name_identifier String http://purl.org/dc/elements/1.1/coverage (external link)
attribute geospatial_lon_min_WGS84 description String Westernmost longitude covered by the dataset.
attribute geospatial_lon_min_WGS84 ioos_category String Location
attribute geospatial_lon_min_WGS84 long_name String Maximum latitude
attribute geospatial_lon_min_WGS84 spatial_reference_system String WGS 84 - EPSG:4326 - https://epsg.io/4326 (external link)
attribute geospatial_lon_min_WGS84 standard_name String latitude
attribute geospatial_lon_min_WGS84 standard_name_identifier String https://vocab.nerc.ac.uk/collection/P07/current/CFSN0600/ (external link)
attribute geospatial_lon_min_WGS84 units String degrees_east
variable geospatial_resolution   float  
attribute geospatial_resolution actual_range float 0.3, 0.3
attribute geospatial_resolution comment String Resolution values have been averaged to the tenth decimal place.
attribute geospatial_resolution description String Information about the targeted spacing of points
attribute geospatial_resolution ioos_category String Other
attribute geospatial_resolution long_name String Spatial resolution
attribute geospatial_resolution units String m
variable marine_region_identifier   String  
attribute marine_region_identifier long_name String Standard location URI
attribute marine_region_identifier units String unitless

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.


 
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