Table of Contents

The o2a.GeoTiff Format O2A GeoTIFF is a specification of the metadata tags nomenclature inside a GeoTiff GeoTIFF used in the o2a O2A dataflow. It extends the GeoTiff Format public GeoTIFF format with defined metadata tags which are needed for used in the o2a O2A dataflow.

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Version 1.

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1

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The O2A GeoTIFF specification version 1.1 is in progress and

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not yet fully proofed. It will replace the the O2A GeoTIFF specification version 1.

An GeoTiff with defined metadata tags. The advantage is to store the SensorURN and/or DOI and/or additional metadata tags in the file.

GeoTIFF with WKT representation of the coordinate reference system (it needs to be a CRS existing in the EPSG library) and additional metadata tags holding dataset-specific information.

A O2A GeoTIFF needs to contain all the following metadata tags. If any values are unkown, they should be left empty.

Metadata	Description, Examples	Value
Coordinate System	The Coordinate System (SRS,CRS) must be written in the WKT format and must be valid against the EPSG code representation. If not, it won't be accepted. e.g. WKT of EPSG:4326: https://epsg.io/4326.wkt	mandatory
PARAMETER_NAME	(Natural language) name of measured or calculated parameter. e.g.: sic, multibeam	can be empty
PARAMETER_URN	The parameter urn of the dataset as defined in sensor.awi.de or build from a pangaea DOI. It will be used for decisions in the o2a dataflow. e.g.: satellite:gcomw1:amsr2:l2:sic pangaea:893351:M132_bathy_data-products:M132_soundings_WGS84:multibeam
PARAMETER_UNIT	The unit of the given parameter e.g. %	can be empty
DATE_TIME or DATE_TIME_START DATE_TIME_END	Date/Time of the data, in the ISO 8601 format, e.g. YYYY-MM-DDThh:mm:ss. Either one timestamp (DATE_TIME) or two timestamps for time series (DATE_TIME_START, DATE_TIME_END).	mandatory
LICENSE	License of the dataset. e.g. MIT, CC BY-NC 3.0	can be empty

Examples

Metadata like in the following examples could be retrieved by using the gdalinfo command.

e.g.: gdalinfo ./path/to/file.sdi.tif

Data from sensor.awi.de

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`Driver: GTiff/GeoTIFFFiles: ..`/Downloads/SeaIceRgb.tiff`/platforms/satellite/gcomw1/amsr2/l2/sic/data/2019/05/21/asi-AMSR2-n3125-20190521_EPSG4326.tif Size is` 1170`4268,` 385`4268 Coordinate System is:` `PROJCS["WGS 84 / Arctic Polar Stereographic",` `GEOGCS["WGS 84",` `DATUM["WGS_1984",`            `SPHEROID["WGS 84",6378137,298.257223563,`    `AUTHORITY["EPSG","7030"]],`    `AUTHORITY["EPSG","6326"]],` `PRIMEM["Greenwich",0,` `AUTHORITY["EPSG","8901"]],` `UNIT["degree",0.0174532925199433,` `AUTHORITY["EPSG","9122"]],` `AUTHORITY["EPSG","4326"]],` `PROJECTION["Polar_Stereographic"],` `PARAMETER["latitude_of_origin",71],` `PARAMETER["central_meridian",0],` `PARAMETER["scale_factor",1],` `PARAMETER["false_easting",0],` `PARAMETER["false_northing",0],` `UNIT["metre",1,` `AUTHORITY["EPSG","9001"]],` `AXIS["X",EAST],` `AXIS["Y",NORTH],` `AUTHORITY["EPSG","3995"]]Origin = (`55`-6527893.`375000000188301`000000000000000,`87`6882500.`291666666664497`000000000000000)Pixel Size = (`0`3125.`041666666666700`000000000000000,-`0`3125.`041666666666700`000000000000000)Metadata:`    `AREA_OR_POINT=Area`
`grid_information=longitude-latitude grid for these data to be found at: https://seaice.uni-bremen.de/data/grid_coordinates/n3125/` `long_name=ASI Ice Concentration, Version: 5.4, 20190521, res: 3.12500, AMSR2, Region: Arctic3125` `valid_range=0, 100 PARAMETER_NAME=sic`     `PARAMETER_URN=satellite:gcomw1:amsr2:l2:`sic `sic`      `PARAMETER_UNIT=%`
    DOI=PANGAEA.123456
`LICENSE= DATE_TIME=2019-05-21T00:00:00`   `Image Structure Metadata:`    `INTERLEAVE=`PIXEL`BANDCorner Coordinates:` `Upper Left (` 55`-6527893.`3750000`000,` 87`6882500.`2916667`000) (` 55d22`136d30'`30`52.`00`93"`E`W,` 87d17`15d 7'`30`10.`00`61"N)` `Lower Left (` 55`-6527893.`3750000`000,` 71`-6455000.`2500000`000) (` 55d22`45d19'`30`18.`00`07"`E`W,` 71d15`16d55'` 0`59.`00`58"N)` `Upper Right (` 104`6809607.`1250000`000,` 87`6882500.`2916667`000) (`104d 7`135d18'`30`18.`00`09"E,` 87d17`13d58'`30`41.`00`21"N)` `Lower Right (` 104`6809607.`1250000`000,` 71`-6455000.`2500000`000) (` 104d 7`46d31'`30`52.`00`83"E,` 71d15`15d43'` 0`36.`00`08"N)Center (` 79`140857.`7500000`000,` 79`213750.`2708333`000) (` 79d45`146d36'` 0`57.`00`28"E,` 79d16`87d38'`15`39.`00`46"N)Band 1 Block=`1170x2 `512x512 Type=`Byte, ColorInterp=Red
Band 2 Block=1170x2 Type=Byte, ColorInterp=Green
Band 3 Block=1170x2 Type=Byte, ColorInterp=Blue
...
`Float32, ColorInterp=Gray` `Min=0.000 Max=100.000` `Minimum=0.000, Maximum=100.000, Mean=89.065, StdDev=23.340` `NoData Value=0` `Overviews: 2134x2134, 1067x1067, 534x534, 267x267, 134x134, 67x67 Metadata:` `STATISTICS_MAXIMUM=100` `STATISTICS_MEAN=89.065134675115` `STATISTICS_MINIMUM=0.0002532234066166` `STATISTICS_STDDEV=23.340079762818`

Data from www.pangaea.de

Driver: GTiff/GeoTIFFFiles: ../pangaea/893351/M132_bathy_data-products/M132_soundings_WGS84/M132_soundings_EPSG4326_2016-11-15.tif Size is 4268, 4268 Coordinate System is: PROJCS["WGS 84 / Arctic Polar Stereographic", GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563, AUTHORITY["EPSG","7030"]], AUTHORITY["EPSG","6326"]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4326"]], PROJECTION["Polar_Stereographic"], PARAMETER["latitude_of_origin",71], PARAMETER["central_meridian",0], PARAMETER["scale_factor",1], PARAMETER["false_easting",0], PARAMETER["false_northing",0], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["X",EAST], AXIS["Y",NORTH], AUTHORITY["EPSG","3995"]]Origin = (-6527893.000000000000000,6882500.000000000000000)Pixel Size = (3125.000000000000000,-3125.000000000000000)Metadata: AREA_OR_POINT=Area PARAMETER_NAME=multibeam PARAMETER_URN=pangaea:893351:M132_bathy_data-products:M132_soundings_WGS84:multibeam PARAMETER_UNIT= LICENSE=Creative Commons Attribution-NonCommercial 3.0 Unported (CC-BY-NC-3.0) DATE_TIME_START=2016-11-15T00:00:00 DATE_TIME_END=2016-12-11T00:00:00Image Structure Metadata: INTERLEAVE=BANDCorner Coordinates:Upper Left (-6527893.000, 6882500.000) (136d30'52.93"W, 15d 7'10.61"N)Lower Left (-6527893.000,-6455000.000) ( 45d19'18.07"W, 16d55'59.58"N)Upper Right ( 6809607.000, 6882500.000) (135d18'18.09"E, 13d58'41.21"N)Lower Right ( 6809607.000,-6455000.000) ( 46d31'52.83"E, 15d43'36.08"N)Center ( 140857.000, 213750.000) (146d36'57.28"E, 87d38'39.46"N)Band 1 Block=512x512 Type=Float32, ColorInterp=Gray Min=0.000 Max=100.000 Minimum=0.000, Maximum=100.000, Mean=89.065, StdDev=23.340 NoData Value=0 Overviews: 2134x2134, 1067x1067, 534x534, 267x267, 134x134, 67x67 Metadata: STATISTICS_MAXIMUM=100 STATISTICS_MEAN=89.065134675115 STATISTICS_MINIMUM=0.0002532234066166 STATISTICS_STDDEV=23.340079762818

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Version 1 (deprecated)

~~Definition for Format version 1 is in progress and is not yet proofed.~~

~~An GeoTiff with defined metadata tags. The advantage is to store the SensorURN and/or DOI and/or additional metadata tags in the file.~~

~~GeoTiff with well formed WKT description of the coordinate system and additional~~ defeined ~~defined metadata tags holding~~ dateset specific informations~~dataset-specific information. Attribute names (orange) are case sensitive.~~

~~Coordinate System~~

~~The Coordinate System (SRS, CRS) must be~~

in

~~written in the WKT format and must be valid against it. If not, it won't be accepted.~~

~~e.g. WKT of EPSG:4326: https://epsg.io/4326.wkt~~

~~PARAMETER_URN~~

~~The sensor or parameter urn of the dataset as defined in sensor.awi.de. It will be used for decisions in the o2a dataflow.~~

~~e.g. '~~

satelite

~~satellite:gcomw1:amsr2:l2:sic'~~

~~PARAMETER_UNIT~~

~~The unit of the given parameter.~~

~~e.g. '%'~~

DOI

If the dataset is coming from PANGAEA, the DOI is used for identification.

e.g. 'PANGAEA.123456'

Tasks

Example: sensor.awi.de

~~Driver: GTiff/GeoTIFF~~
~~Files: ../Downloads/SeaIceRgb.tiff~~
~~Size is 1170, 385~~
~~Coordinate System is:~~
~~GEOGCS["WGS 84",~~
~~DATUM["WGS_1984",~~
    ~~SPHEROID["WGS 84",6378137,298.257223563,~~
    ~~AUTHORITY["EPSG","7030"]],~~
    ~~AUTHORITY["EPSG","6326"]],~~
~~PRIMEM["Greenwich",0],~~
~~UNIT["degree",0.0174532925199433],~~
~~AUTHORITY["EPSG","4326"]]~~
~~Origin = (55.375000000188301,87.291666666664497)~~
~~Pixel Size = (0.041666666666700,-0.041666666666700)~~
~~Metadata:~~
    ~~AREA_OR_POINT=Area~~
    ~~PARAMETER_URN=satellite:gcomw1:amsr2:l2:sic~~
    ~~PARAMETER_UNIT=%~~
    ~~DOI=PANGAEA.123456~~
~~Image Structure Metadata:~~
    ~~INTERLEAVE=PIXEL~~
~~Corner Coordinates:~~
~~Upper Left ( 55.3750000, 87.2916667) ( 55d22'30.00"E, 87d17'30.00"N)~~
~~Lower Left ( 55.3750000, 71.2500000) ( 55d22'30.00"E, 71d15' 0.00"N)~~
~~Upper Right ( 104.1250000, 87.2916667) (104d 7'30.00"E, 87d17'30.00"N)~~
~~Lower Right ( 104.1250000, 71.2500000) (104d 7'30.00"E, 71d15' 0.00"N)~~
~~Center ( 79.7500000, 79.2708333) ( 79d45' 0.00"E, 79d16'15.00"N)~~
~~Band 1 Block=1170x2 Type=Byte, ColorInterp=Red~~
~~Band 2 Block=1170x2 Type=Byte, ColorInterp=Green~~
~~Band 3 Block=1170x2 Type=Byte, ColorInterp=Blue~~The metadata tags must be tested in the processing workflow.

Versions Compared

Old Version 3

New Version 4

Key

Version 1.

1

Examples

Data from sensor.awi.de

Data from www.pangaea.de

Version 1 (deprecated)

Tasks

Example: sensor.awi.de

Page History

Versions Compared

Old Version 3

New Version 4

Key

Version 1.

1

Examples

Data from sensor.awi.de

Data from www.pangaea.de

Version 1 (deprecated)

Tasks

Example: sensor.awi.de