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Dataset

 

North Atlantic Climate System Integrated Study (ACSIS) Atlantic Ocean medium resolution SST dataset: Reconstructed 5-day, ½ degree, Atlantic Ocean SST (1950-2014)

Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2020-05-28
DOI Publication Date: 2020-05-29
Download Stats: last 12 months

Abstract

The North Atlantic Climate System Integrated Study (ACSIS) Atlantic Ocean medium resolution SST dataset is a 5-day field of Sea Surface Temperature (SST) on a ½ degree by ½ degree grid from 1950 to 2014 and covers the Atlantic Ocean.

The dataset is based on in situ ship and buoy SST observations from the International Comprehensive Ocean-Atmosphere Data Set (ICOADS) Revision 3. Measurements which fail initial quality control checks are rejected and for each grid box where there is data a trimmed mean and sample standard deviation are calculated to produce super-observations. These are then expressed as anomalies from the 1981-2014 Climatology (mean, annual, semi-annual and tri-annual) from the European Space Agency (ESA) Climate Change Initiative (CCI) SST dataset (version 2.0) derived from satellite observations. The measurements are then interpolated using Kriging to infill gaps and estimate uncertainties. The spatial covariance used in the Kriging was derived from the CCI SST analysis residuals (CCI SST analysis minus the CCI SST climatology). After interpolation, bias corrections derived from the HadSST.4.0.0.0 dataset are applied.

The dataset is available as annual CF complaint NetCDF files, with a total of 65 annual files available. Each file contains: the 5 day mean sea surface temperature; the corresponding climatological value, the sea surface temperature anomaly and the uncertainty in the sea surface temperature.

The new dataset has been developed as part of the UK North Atlantic Climate System Integrated Study (ACSIS) for use in validation and comparison with regional climate models. Other potential uses include boundary forcing for regional reanalyses, monitoring and assessment of regional climate change and other studies requiring SST at a resolution higher than typical for the in situ products (i.e. < 1 month, < 1°) and spanning the satellite and pre-satellite era.

Citable as:  Williams, S.D.; Berry, D.I. (2020): North Atlantic Climate System Integrated Study (ACSIS) Atlantic Ocean medium resolution SST dataset: Reconstructed 5-day, ½ degree, Atlantic Ocean SST (1950-2014). Centre for Environmental Data Analysis, 29 May 2020. doi:10.5285/83b0cd7e7cc6495a90b4cb967ead3577. http://dx.doi.org/10.5285/83b0cd7e7cc6495a90b4cb967ead3577
Abbreviation: Not defined
Keywords: ACSIS, SST

Details

Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.
Use of these data is covered by the following licence: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data were produced by the project team and supplied for archiving at the Centre for Environmental Data Analysis (CEDA). Atlantic Ocean medium resolution SST dataset was created in 2019 at the National Oceanography Centre. It uses in situ ship and buoy measurements from the the International Comprehensive Ocean-Atmosphere Data Set (ICOADS) Release 3 and a climatology from the European Space Agency (ESA) Climate Change Initiative (CCI) SST version 2.0 product. Applied bias
corrections were derived from the HadSST.4.0.0.0 dataset.

Data Quality:
Research Data fro ACSIS project. Data was quality controlled by ICOADS and applied at the National Oceanography Centre. Estimates of the uncertai nties of the interpolated SST data are available in the archive.
File Format:
CF-NetCDF

Related Documents

No documents related to this record were found.

Process overview

This dataset was generated by a combination of instruments deployed on platforms and computations as detailed below.

Computation Element: 1

Title ACSIS AO SST Computation
Abstract Interpolation using Kriging to infill gaps and estimate uncertainties. The spatial covariance used in the Kriging was derived from the CCI SST analysis residuals (CCI SST analysis minus the CCI SST climatology). After interpolation, bias corrections derived from the HadSST.4.0.0.0 dataset are applied.
Input Description None
Output Description None
Software Reference None
Output Description None
  • units: meters
  • var_id: depth
  • long_name: depth
  • names: depth
  • var_id: lat_bounds
  • units: degrees_north
  • var_id: lat
  • long_name: latitude
  • units: degrees_north
  • names: latitude
  • var_id: lon_bounds
  • units: degrees_east
  • var_id: lon
  • units: degrees_east
  • long_name: longitude
  • names: longitude
  • standard_name: sea_water_temperature_anomaly
  • units: Celsius
  • long_name: mean of sea water temperature
  • var_id: sst_anomaly
  • names: sea_water_temperature_anomaly, mean of sea water temperature
  • long_name: time
  • var_id: time
  • names: time
  • var_id: time_bounds
  • long_name: uncertainty
  • var_id: sst_sigma
  • standard_name: sea_water_temperature standard_error
  • units: Celsius
  • names: uncertainty, sea_water_temperature standard_error

Co-ordinate Variables

Coverage
Temporal Range
Start time:
1950-01-01T00:00:00
End time:
2014-12-31T12:59:50
Geographic Extent

 
68.0000°
 
-98.0000°
 
20.0000°
 
-60.0000°