Physical environment - In situ data - Annual bottom temperature in October (CGFS) from 1997 to 2006

Temperature and salinity were measured in situ at sea surface and at bottom during the CGFS surveys from 1997 to 2006. Temperature and salinity were measured using a probe. These surveys give illustration of autumn conditions.

Simple

Alternate title
CGFS_environment_geostatS
Date ( Publication )
2009-12-31T00:00:00
Identifier
CHARM_CGFS_BTEMP_06_R
Presentation form
Digital map
Other citation details
Source CHARM Consortium
Credit
IFREMER
Credit
CHARM consortium
Status
Completed
Resource provider
Ifremer - Franck Coppin
Custodian
CHARM Consortium - CHARM Consortium
Maintenance and update frequency
As needed
Thèmes Sextant ( Theme )
  • /Physical Environment/Physical Habitats
Keywords ( Discipline )
  • environment data set
  • CHARM
external.theme.gemet ( Theme )
  • température de l'océan
GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Oceanographic geographical features
Use limitation
research-only
Access constraints
License
Other constraints
Has to be cited this way in maps : "Source CHARM Consortium"
Other constraints
Has to be cited this way in bibliography : "Carpentier A, Martin CS, Vaz S (Eds.), 2009. Channel Habitat Atlas for marine Resource Management, final report / Atlas des habitats des ressources marines de la Manche orientale, rapport final (CHARM phase II). INTERREG 3a Programme, IFREMER, Boulogne-sur-mer, France. 626 pp. & CD-rom"
Spatial representation type
Grid
Denominator
2500
Metadata language
fr
Metadata language
en
Character set
UTF8
Topic category
  • Oceans
  • Biota
  • Environment
Environment description
Microsoft Windows XP ; ESRI ArcGIS 9.x
Geographic identifier
Eastern English Channel
N
S
E
W
thumbnail


Begin date
1997-01-01T00:00:00
End date
2006-12-31
Reference system identifier
WGS 84 (EPSG:4326)
Number of dimensions
2
Dimension name
Column
Dimension size
1288
Resolution
0.009  degree
Dimension name
Row
Dimension size
618
Resolution
0.009  degree
Cell geometry
Area
Transformation parameter availability
No

Distributor

Distributor
Ifremer - Centre de Brest
OnLine resource
CHARM web site ( WWW:LINK )

CHARM web site

Protocol
COPYFILE
Name
1997
Description
1997
Protocol
COPYFILE
Name
1998
Description
1998
Protocol
COPYFILE
Name
1999
Description
1999
Protocol
COPYFILE
Name
2000
Description
2000
Protocol
COPYFILE
Name
2001
Description
2001
Protocol
COPYFILE
Name
2002
Description
2002
Protocol
COPYFILE
Name
2003
Description
2003
Protocol
COPYFILE
Name
2004
Description
2004
Protocol
COPYFILE
Name
2005
Description
2005
Protocol
COPYFILE
Name
2006
Description
2006
OnLine resource
CHARM_CGFS_BTEMP_97_R ( OGC:WMS )

1997

OnLine resource
CHARM_CGFS_BTEMP_98_R ( OGC:WMS )

1998

OnLine resource
CHARM_CGFS_BTEMP_99_R ( OGC:WMS )

1999

OnLine resource
CHARM_CGFS_BTEMP_00_R ( OGC:WMS )

2000

OnLine resource
CHARM_CGFS_BTEMP_01_R ( OGC:WMS )

2001

OnLine resource
CHARM_CGFS_BTEMP_02_R ( OGC:WMS )

2002

OnLine resource
CHARM_CGFS_BTEMP_03_R ( OGC:WMS )

2003

OnLine resource
CHARM_CGFS_BTEMP_04_R ( OGC:WMS )

2004

OnLine resource
CHARM_CGFS_BTEMP_05_R ( OGC:WMS )

2005

OnLine resource
CHARM_CGFS_BTEMP_06_R ( OGC:WMS )

2006

Hierarchy level
Dataset
Statement
The survey extends from the Eastern English Channel to the south of the North Sea, which corresponds to ICES divisions VIId and IVc. The study area is divided into rectangles of 15’ latitude and 15’ longitude using a systematic sampling strategy. The sampling gear is a high opening bottom trawl well adapted for catching demersal species. Since 1997, temperature and salinity (surface and bottom) are measured using a probe attached on the headrope of the trawl.
Description
Statistical analysis : the statistical distribution of environmental data were tested for normality (histograms, skewness, kurtosis). The data were transformed whem skewness value exceeded |1| and/or kurtosis exceeded 1 and if a normalising function that could improve the data distribution was found. Environmental variables were measured on scales based on analytical conventions that are unrelated to the natural processes generated them. Therefore, any transformed scale is as appropriate as those on which these data were originally recorded. Geostatistical interpolation : the spatial variation of environmental data were analysed using GENSTAT (GENSTAT 7 Committee, 2004), which is a GENeral STATistics package including the main geostatistical tools. It computes experimentala variograms, fits these with various authorised mathematical models and uses them to calculate kriged estimates on a fine regular grid (of latitudes and longitudes). The grid of points was imported into ArcMap and interpolated with the Spatial Analyst extension in order to create a continuous raster of 1 km² resolution. The resulting maps illustrate the spatial distributions and the variations over time for environmental data studied in CHARM's area. For legends of maps, approximates od the 5th and the 95th quantiles were used for the minimales and maximales values respectively.
Description
CGFS surveys, annual scientific surveys of IFREMER
File identifier
b5bace6e-f64c-4dc9-9947-0f56302ee227 XML
Metadata language
en
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2020-06-04T01:01:20
Metadata standard name
ISO 19115:2003/19139 - SEXTANT
Metadata standard version
1.0
Point of contact
Ifremer - Fanny Lecuy
 
 

Overviews

overview

Spatial extent

N
S
E
W
thumbnail


Keywords

GEMET - INSPIRE themes, version 1.0
Oceanographic geographical features
Thèmes Sextant
/Physical Environment/Physical Habitats
external.theme.gemet
température de l'océan

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