ATLANTIC_CH10_Product_2 / Digital bathymetry uncertainty covering the North Atlantic, and a representative sample area within the North Atlantic.

This product is a map of the uncertainty of available digital bathymetry measurements for the North Atlantic Ocean. This is done for a spatial resolution feasible for this large area (25km x 25km). It is designed to assess the quality of the bathymetry readings with a view to supporting assessments of future need. The product is formulated through a number of characteristics of the data including age of measurement and slope.

Simple

Date (Creation)
2017-08-02T00:00:00
Identifier
DOI:10.12770/7f70cff5-87a2-4402-b548-84d9ed2f74e2
Issue identification
Not Applicable
Purpose
To assess the uncertainty associated with bathymetry measurements, at a feasible spatial resolution covering the whole North Atlantic Ocean.
Point of contact
  HR Wallingford
Publisher
  EMODnet Atlantic Checkpoint
Author
  HR Wallingford
Used by challenges
  • Atlantic - CH10 - Bathymetry
Processing level of characteristics
  • High level analyzed
Production mode
  • Delayed
GEMET - INSPIRE themes, version 1.0
  • Elevation
Validation
  • Draft
Use constraints
Other restrictions
Other constraints
This EMODnet Atlantic Checkpoint data product (the “Product”) is the result of a “challenge” stress test specified by the call for tenders No MARE/2012/11. The challenge partners ( "the producer") were commissioned to perform a number of tests to evaluate marine data according to set user requirements. This product and any resultant data and metadata produced is a consequence of these tests and provided for interest only. The Product is provided on an “as is” basis, and the producer disclaims any and all warranties, conditions, or representations (express, implied, oral or written), relating to the Product or any part thereof, including, without limitation, any and all implied warranties of quality, performance, suitability or fitness for a particular purpose to the full extent permitted by law. The Producer and the Atlantic Checkpoint partners accept no liability for loss suffered or incurred as a result of reliance on the Product or any output of its use. The Producer shall not be liable for any economic loss, loss of profit, loss of business or contract, depletion of goodwill or otherwise, in each case whether direct, or indirect or any indirect loss whatsoever (howsoever caused) including loss or damage suffered as a result of an action brought by any person which arise out of or in connection with the use of the Product or inability to use the Product
Use limitation
Good: The product meets more than 50% of the objectives specified by the challenge
Use limitation

It is possible to build a coarse uncertainty grid for the entire North Atlantic Ocean. However, the value produced is relative and does not indicate a quantitative error. Data offered in standard formats. Limitations with downloading large quantities.

Metadata is also missing and had to be approximated. Metadata was varied and complex, sometimes even within individual data products. Much metadata was missing and incomplete. On the whole, metadata was non-standard and variable leading to difficulties producing data products with multiple sources. It was also necessary to infer certain attributes (such as method) from the data values themselves by looking at the density and form of the depth readings.

For each input dataset, the reported findings are as follows:

- GEBCO Source Identifier Grids. It was possible to assign a value based on whether the bathymetry came from a particular source.

- EMODnet : Usability problems prevented EMODnet metadata being obtained in the quantities necessary.

- USGS : Extensive metadata available by survey and also regarding dataset compilation.

- CHS : Limited metadata available, not much useful information. Information was inferred from the characteristics of the data."

Improvement needed
Aggregate Datasetindentifier
683a590e-670c-4fdc-a997-77e8ecd42bd3
Association Type
Cross reference
Initiative Type
specification
Aggregate Datasetindentifier
0a2d91cf-72c8-4f9d-abd3-feba0200e51a
Association Type
Cross reference
Initiative Type
upstreamData
Aggregate Datasetindentifier
72fea185-7548-40a6-9d4f-b26772b84a0d
Association Type
Cross reference
Initiative Type
upstreamData
Aggregate Datasetindentifier
c399cd8c-5963-402f-9981-84d4c91cbd07
Association Type
Cross reference
Initiative Type
upstreamData
Aggregate Datasetindentifier
5b82913f-bc4f-4897-ad55-fcf4c88d40be
Association Type
Cross reference
Initiative Type
upstreamData
Spatial representation type
grid Grid
Metadata language
English
Character set
utf8 UTF8
Topic category
  • Oceans
N
S
E
W
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Vertical extent

Distribution format
  • GeoTIFF ()

OnLine resource
DOI of the product ( WWW:LINK-1.0-http--metadata-URL )

DOI of the product

OnLine resource
CH10_product_02 ( OGC:OWS-C )

Product visualization

OnLine resource
Access to the website ( WWW:LINK )

Access to the website

Hierarchy level
datasetComponent
Other
ATLANTIC_CH10_Product_2_1
Other
Bathymetry uncertainty
Other
Seabed - Riverbed|Bathymetry and Elevation|Sea-floor depth (below mean sea level) {bathymetric depth}|High level analyzed|Delayed (mandatory)
N
S
E
W
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Vertical extent

Completeness omission

Name of measure
Horizontal Spatial Coverage
Measure identification
AP.1.1
Measure description
Horizontal coverage extent of product (eg : surface of the Mediterranean Sea)

Quantitative result

Value type
Real
Value
56355883

gmd:DQ_DescriptiveResult

Date / Time
2018-04-03T00:00:00
Statement
North Atlantic Ocean is covered however only 23747408 km**2 are covered with appropriate metadata.

Completeness omission

Name of measure
Vertical Spatial Coverage
Measure identification
AP.1.2
Measure description
Vertical coverage extent of product

Quantitative result

Value type
Real

gmd:DQ_DescriptiveResult

Date / Time
2018-04-03T00:00:00

Completeness omission

Name of measure
Temporal Coverage
Measure identification
AP.1.3
Measure description
Temporal coverage extent of product

Quantitative result

Value type
Integer

gmd:DQ_DescriptiveResult

Date / Time
2018-04-03T00:00:00

Completeness omission

Name of measure
Number of items
Measure identification
AP.1.4
Measure description
Count of all items in the dataset or sample. Describe the items which are counted. If the number is determined by sampling unit (density), define the sampling unit (eg size of mesh).

Quantitative result

Value type
Integer
Value
50

gmd:DQ_DescriptiveResult

Date / Time
2018-04-03T00:00:00
Statement
Taking into account usability and access, it is judged that 50% of the required metadata ((Age of bathymetry measurement, Type of instrument used for bathymetry readings) is available for this coverage.

Conceptual consistency

Name of measure
Number of Characteristics
Measure identification
AP.2.1
Measure description
Number of characteristics in product

Quantitative result

Value type
Integer
Value
1

gmd:DQ_DescriptiveResult

Date / Time
2018-04-03T00:00:00

Thematic classification correctness

Name of measure
Horizontal resolution
Measure identification
AP.3.1
Measure description
Horizontal mesh size or equivalent value for the given scale of product (eg 50m for 1/50 000)

Quantitative result

Value type
Integer
Value
25000

gmd:DQ_DescriptiveResult

Date / Time
2018-04-03T00:00:00

Thematic classification correctness

Name of measure
Vertical resolution
Measure identification
AP.3.2
Measure description
Average vertical sampling

Quantitative result

Value type
Real

gmd:DQ_DescriptiveResult

Date / Time
2018-04-03T00:00:00

Thematic classification correctness

Name of measure
Temporal resolution
Measure identification
AP.3.3
Measure description
Temporal sampling interval of product

Quantitative result

Value type
Real

gmd:DQ_DescriptiveResult

Date / Time
2018-04-03T00:00:00

Quantitative attribute accuracy

Name of measure
Thematic accuracy
Measure identification
AP.3.4
Measure description
Percentage error of the product and description of error concept for the product (100 words max) provided by expert

Quantitative result

Value type
Percentage
Value
89
Statement
Approximate proportion of area of the North Atlantic Ocean NOT covered by bathymetry data with the best available levels of uncertainty

Temporal validity

Name of measure
Temporal validity
Measure identification
AP.4.1
Measure description
Max elapsed time between last input data records update and product creation date. Minimum value 1/24 day.

Quantitative result

Value type
Integer

gmd:DQ_DescriptiveResult

Date / Time
2018-04-03T00:00:00

gmd:DQ_UsabilityElement

Name of measure
Usability
Measure identification
AP.5.1
Value
Good

gmd:DQ_DescriptiveResult

Date / Time
2018-04-03T00:00:00
Statement

Overall, it is possible to build the product. Data offered in standard formats. Limitations with downloading large quantities.Metadata was varied and complex, sometimes even within individual data products. Much metadata was missing and incomplete. On the whole, metadata was non-standard and variable leading to difficulties producing data products with multiple sources. It was also necessary to infer certain attributes (such as method) from the data values themselves by looking at the density and form of the depth readings.

For each input dataset, the reported findings are as follows:

- GEBCO Source Identifier Grids. It was possible to assign a value based on whether the bathymetry came from a particular source.

- EMODnet : Usability problems prevented EMODnet metadata being obtained in the quantities necessary.

- USGS : Extensive metadata available by survey and also regarding dataset compilation.

- CHS : Limited metadata available, not much useful information. Information was inferred from the characteristics of the data."

Improvement needed

Completeness omission

Name of measure
Horizontal spatial coverage error
Measure identification
P.APE.1.1
Measure description

Percentage to which the extent of the horizontal

spatial coverage of TPD is not compliant with the DPS extent in km**2(TDP_AP_1_1 - DPS_AP_1_1)*100/DPS_AP_1_1

Quantitative result

Value type
Percentage
Value
0

Completeness omission

Name of measure
Horizontal spatial coverage fitness for use error
Measure identification
UD.FU.1.1
Measure description

Combination of the errors of the product

component Cn with the error of the selected input data set Ud Cn used for this component
Value
0

Completeness omission

Name of measure
Vertical spatial coverage error
Measure identification
P.APE.1.2
Measure description

Percentage to which the extent of the vertical spatial coverage of TPD is not compliant with the DPS extent in

metres.(TDP_AP_1_2 - DPS_AP_1_2)*100/DPS_AP_1_2

Quantitative result

Value type
Percentage

Completeness omission

Name of measure
Vertical spatial coverage fitness for use error
Measure identification
UD.FU.1.2
Measure description

Combination of the errors of the product

component Cn with the error of the selected input data set Ud Cn used for this component

Completeness omission

Name of measure
Temporal coverage error
Measure identification
P.APE.1.3
Measure description

Percentage to which the extent of the temporal coverage of TPD is not compliant with the DPS extent in

days.(TDP_AP_1_3 - DPS_AP_1_3)*100/DPS_AP_1_3

Quantitative result

Value type
Percentage

Completeness omission

Name of measure
Temporal coverage fitness for use error
Measure identification
UD.FU.1.3
Measure description

Combination of the errors of the product

component Cn with the error of the selected input data set Ud Cn used for this component

Completeness omission

Name of measure
Number of items error
Measure identification
P.APE.1.4
Measure description

Percentage to which the extent of the number of items of TPD is not compliant with the DPS number of items in

days.(TDP_AP_1_4 - DPS_AP_1_4)*100/DPS_AP_1_4

Quantitative result

Value type
Percentage
Value
-50

Completeness omission

Name of measure
Error count fitness for use error
Measure identification
UD.FU.1.4
Measure description

Combination of the errors of the product

component Cn with the error of the selected input data set Ud Cn used for this component
Value
-50

Conceptual consistency

Name of measure
Thematic content error
Measure identification
P.APE.2.1
Measure description

Percentage

of completeness/Incompleteness of the number of characteristcs with respect to the list in DPS(TDP_AP_2_1 - DPS_AP_2_1)*100/DPS_AP_2_1

Quantitative result

Value type
Percentage
Value
0

Thematic classification correctness

Name of measure
Horizontal resolution error
Measure identification
P.APE.3.1
Measure description

Percentage to which the product averaged horizontal mesh size or horizontal scale is not compliant with the DPS

averaged mesh size or horizontal scale(DPS_AP_3_1 - TDP_AP_3_1)*100/DPS_AP_3_1

Quantitative result

Value type
Percentage
Value
0

Thematic classification correctness

Name of measure
Horizontal resolution fitness for use error
Measure identification
UD.FU.3.1
Measure description

Combination of the errors of the product

component Cn with the error of the selected input data set Ud Cn used for this component
Value
0

Thematic classification correctness

Name of measure
Vertical resolution error
Measure identification
P.APE.3.2
Measure description

Percentage to which the product averaged vertical mesh size or vertical scale is not compliant with the DPS

averaged mesh size or vertical scale(DPS_AP_3_2 - TDP_AP_3_2)*100/DPS_AP_3_2

Quantitative result

Value type
Percentage

Thematic classification correctness

Name of measure
Vertical resolution fitness for use error
Measure identification
UD.FU.3.2
Measure description

Combination of the errors of the product

component Cn with the error of the selected input data set Ud Cn used for this component

Thematic classification correctness

Name of measure
Temporal sampling interval error
Measure identification
P.APE.3.3
Measure description

Percentage to which the product temporal sampling interval is not compliant with the one defined in DPS

(percentage to be extracted from text of AP.3.3 measure)(DPS_AP_3_3 - TDP_AP_3_3)*100/DPS_AP_3_3

Quantitative result

Value type
Percentage

Thematic classification correctness

Name of measure
Temporal resolution fitness for use error
Measure identification
UD.FU.3.3
Measure description

Combination of the error of the product

component Cn with the error of the selected input data set Ud Cn used for this component

Quantitative attribute accuracy

Name of measure
Thematic accuracy errror
Measure identification
P.APE.3.4
Measure description

Compliance with the value domain of

the accuracy defined in DPS (% extracted from thematic accuracy description)TDP_AP_3_4

Quantitative result

Value type
Percentage
Value
89

Quantitative attribute accuracy

Name of measure
Thematic accuracy fitness for use error
Measure identification
UD.FU.3.4
Measure description

Combination of the error of the product

component Cn with the error of the selected input data set Ud Cn used for this component
Value
89

Temporal validity

Name of measure
Temporal validity error
Measure identification
P.APE.4.1
Measure description

Percentage to which the elapsed time of the product is not compliant with the max elapsed time specified in

DPS.(DPS_AP_4_1 - TDP_AP_4_1)*100/DPS_AP_4_1

Quantitative result

Value type
Percentage

Temporal validity

Name of measure
Temporal validity fitness for use error
Measure identification
UD.FU.4.1
Measure description

Combination od errors of extent to which

the elapsed time between last selected input data record update and the product creation date is compliant with

the max elapsed time specified in DPS
File identifier
7f70cff5-87a2-4402-b548-84d9ed2f74e2 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2025-01-28T08:39:47.923792Z
Metadata standard name
ISO 19115-3 - Emodnet Checkpoint - Targeted Data Product
 
 

Overviews

Spatial extent

N
S
E
W
thumbnail


N
S
E
W
thumbnail


Keywords

GEMET - INSPIRE themes, version 1.0
Elevation
Processing level of characteristics
High level analyzed
Production mode
Delayed
Used by challenges
Atlantic - CH10 - Bathymetry
Validation
Draft

Provided by

Access to the portal

Associated resources

Not available