N-ICE2015 colored dissolved organic matter absorption spectra

Colored dissolved organic matter (CDOM) absorption in seawater and sea ice. Samples filtered through 0.2 µm membrane filter. Absorbance was measured with Shimadzu UV-2401 PC spectrophotometer and 50 or 100 mm quartz cells in the wavelength range 240 to 700 nm. Absorbance was converted to absorption coefficients based on cell length. A baseline correction was applied.

More sampling details in Kauko et al. 2017 ( https://doi.org/10.1002/2016JG003626), Pavlov et al. 2017 ( https://doi.org/10.1002/2016JC012471) and Kowalczuk et al. 2017 ( https://doi.org/10.1002/2016JC012589).

Simple

Date (Revision)
2019-10-22
Credit

Alexey Pavlov
Credit

Hanna Kauko
Credit

Colin Stedmon
Credit

Mats Granskog
Status
On going
Publisher
  Norwegian Polar Institute - Alexey Pavlov
Theme

  • Lance

  • ICE

  • N-ICE2015

  • Bottle

  • Sample

  • Floe-1

  • Floe-2

  • Floe-3

  • Floe-4

  • Leg-1

  • Leg-2

  • Leg-3

  • Leg-4

  • Leg-5

  • Leg-6

  • marine

  • ecology

  • oceanography

  • seaice
Nasjonal tematisk inndeling (DOK-kategori)

  • Kyst og fiskeri
Global Change Master Directory (GCMD) Keywords

  • OCEANS | OCEAN OPTICS | ABSORPTION

  • OCEANS | OCEAN CHEMISTRY | ORGANIC MATTER

  • OCEANS | SALINITY/DENSITY

  • OCEANS | SEA ICE
Topic category
  • Oceans
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Begin date
2015-01-11
End date
2015-06-24
Distribution format
OnLine resource
https://data.npolar.no/dataset/7f7e56d0-9e70-4363-b37d-17915e09a935 ( WWW:DOWNLOAD-1.0-http--download )
Statement

Datafiles are separate for samples collected from ship CTD casts or casts with the on-ice mini-rosette. The files (Matlab mat format) include, time, latitude, longitude, pressure (depth in meters), and the CDOM absorption coefficient (1/m) at every wavelength from 240 to 700 nm (461 individual wavelengths). Related data can be found in the water column biogeochemistry dataset https://doi.org/10.21334/npolar.2016.3ebb7f64.


Sea ice data from thick second-year/first-year ice and young ice in a refrozen lead in separate files. Related data and more metadata can be found at the sea ice biogeochemistry dataset https://doi.org/10.21334/npolar.2017.d3e93b31. Metadata in the mat file contains:

- sample ID

- coring site (see the above mentioned papers for more details)

- ice floe number (floe) for thick ice (see the above mentioned papers for more details); for young ice only floe 3

- date_hour: year, month, day, hour (in UTC) OR date as one cell (in UTC)

- latitude (decimals)

- longitude (decimals)

- ice thickness (in cm)

- snow depth (in cm)

- sectionbottom: ice core section bottom distance (in cm) from ice-water interface

- sectiontop: ice core section top distance (in cm) from ice-water interface

- sectiontype (for young ice): ice core section type: 1=whole core, 2=bottom part, 3=top part

- total melted volume of the ice core section (in mL) (for young ice)

- flag_cdom (for thick ice): 1=measurements with 1 cm cuvette (compromises data quality), 0=10 cm cuvette
File identifier
f46970ba-3bcd-502c-9b8e-d175a56f3560 XML
Metadata language
English
Hierarchy level
Dataset
Date stamp
2022-05-27
Metadata standard name

CEOS IDN DIF
Metadata standard version

9.8.4
 
 

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Spatial extent

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Keywords

Bottle Floe-1 Floe-2 Floe-3 Floe-4 ICE Lance Leg-1 Leg-2 Leg-3 Leg-4 Leg-5 Leg-6 N-ICE2015 Sample ecology marine oceanography seaice

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