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MarQUEST: Monthly Inherent Optical Properties for 1998-2007 calculated from SeaWiFS/SeaStar Level 3 products

Update Frequency: Not Planned
Latest Data Update: 2009-12-23
Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2008-12-10
Download Stats: last 12 months
Dataset Size: 20 Files | 8GB


MarQUEST was led by Prof Andrew Watson (UEA), with 15 co-investigators at UEA/BAS, the Universities of Southampton, Essex, and Reading, and from the Plymouth Marine Laboratory and Proudman Oceanographic Laboratory.

This dataset contains monthly inherent optical absorption properties for 1998-2007 calculated from SeaWiFS/SeaStar Level 3 products.

QUEST scientists cooperated in comparing various models, and examining more fundamental (physiological) approaches to understanding the planktonic ecoystem. MarQUEST also developed a module to simulate coastal ecosystems, usable in global ocean biogeochemical simulations. Finally, the project team generated an accurate physical simulation of the North Atlantic guided by data assimilation, into which ecosystem simulations can be embedded. This allows the variation in air-sea fluxes of gases (CO2, oxygen and dimethyl sulphide) from ocean to atmosphere to be quantified for the contemporary period.

This data was produced by Takafumi Hirata, Plymouth Marine Laboratory, Plymouth, UK as part of NERC Programmes: Centre for the observation of Air-Sea Interaction and fluXes (CASIX), National Centre for Earth Observation (NCEO) and Quantifying and Understanding the Earth System (QUEST).

Citable as:  Hirata, T.; Smyth, T. (2008): MarQUEST: Monthly Inherent Optical Properties for 1998-2007 calculated from SeaWiFS/SeaStar Level 3 products. NCAS British Atmospheric Data Centre, date of citation.
Abbreviation: Not defined
Keywords: QUEST, MarQUEST, Marine, ocean, biogeochemistry, model


Previous Info:
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Previously used record identifiers:
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Access rules:
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Use of these data is covered by the following licence: When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

OCCAM model data provided by Bablu Sinha at NOC. Plankton data from PML.

Data Quality:
Not known.
File Format:
Data are netCDF formatted

Process overview

This dataset was generated by the computation detailed below.

MarQUEST: Monthly Inherent Optical Properties for 1998-2007 calculated from SeaWiFS/SeaStar Level 3 products


The algorithm is an extension of the Sathyendranath et al. (2001) approach, based on the assumption that small cells dominate at low chlorophyll-a concentrations and large cells at high chlorophyll-a concentrations.

Input Description


Output Description


Software Reference


  • var_id: bounds
  • var_id: wavelength
  • units: nm
  • long_name: wavelength [nanometers]
  • standard_name: radiation_wavelength

Co-ordinate Variables

  • units: degrees_north
  • long_name: latitude
  • var_id: latitude
  • standard_name: latitude
  • var_id: longitude
  • standard_name: longitude
  • units: degrees_east
  • long_name: longitude
  • var_id: time
  • standard_name: time
  • long_name: time: days since start of 1998 [0 = January 1st]
Temporal Range
Start time:
End time:
Geographic Extent