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Dataset

 
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ESA Sea State Climate Change Initiative (Sea_State_cci) : Global remote sensing merged multi-mission monthly gridded significant wave height, L4 product, version 1.1

Update Frequency: Not Planned
Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2020-01-30
DOI Publication Date: 2020-01-30
Download Stats: last 12 months

Abstract

The ESA Sea State Climate Change Initiative (CCI) project has produced global merged multi-sensor time-series of monthly gridded satellite altimeter significant wave height (referred to as Level 4 (L4) data) with a particular focus for use in climate studies.

This dataset contains the Version 1.1 Remote Sensing Sea Surface Height product, gridded over a global regular cylindrical projection (1°x1° resolution), averaging valid and good measurements from all available altimeters on a monthly basis (using the L2P products also available). These L4 products are meant for statistics and visualization.

This first version of the Sea State CCI products is inherited from the GlobWave project, building on experience and existing outputs. It extends and improves the GlobWave products ,which were a post-processing over existing L2 altimeter agency products with additional filtering, corrections and variables. A major improvement consists in a new denoised sea surface height variable using Empirical Mode Decomposition, which was used as input to these monthly statistical fields.

The altimeter data used in the Sea State CCI dataset v1.1 come from multiple satellite missions spanning from 1991 to 2018 (ERS-1, ERS-2, Topex, Envisat, GFO, CryoSat-2, Jason-1, Jason-2, Jason-3, SARAL). Many altimeters are bi-frequency (Ku-C or Ku-S) and only measurements in Ku band were used, for consistency reasons, being available on each altimeter but SARAL (Ka band).

Citable as:  Piollé, J.-F.; Dodet, G.; Quilfen, Y. (2020): ESA Sea State Climate Change Initiative (Sea_State_cci) : Global remote sensing merged multi-mission monthly gridded significant wave height, L4 product, version 1.1. Centre for Environmental Data Analysis, 30 January 2020. doi:10.5285/47140d618dcc40309e1edbca7e773478. http://dx.doi.org/10.5285/47140d618dcc40309e1edbca7e773478
Abbreviation: Not defined
Keywords: Sea State, CCI, Significant Wave Height

Details

Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_sea_state_terms_and_conditions.pdf. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data was produced by the ESA Sea State CCI team at Ifremer and was transferred to CEDA as part of the ESA CCI Open Data Portal project.

Data Quality:
This product provides an average and other statistical moments of sea wave height computed over the L2P products whose data were quality checked and compared to in situ reference data. For more details on the validation process, refer to the product user guide.
File Format:
Data are in NetCDF format

Related Documents

 Product user guide

Process overview

  • var_id: crs
  • var_id: lat_bnds
  • var_id: lon_bnds
  • var_id: swh_max
  • long_name: maximum median significant wave height value
  • units: m
  • names: maximum median significant wave height value
  • var_id: swh_mean
  • long_name: mean of median significant wave height values
  • units: m
  • names: mean of median significant wave height values
  • var_id: swh_count
  • long_name: number of median significant wave height values
  • units: 1
  • names: number of median significant wave height values
  • var_id: swh_count_greater_than_0.50
  • long_name: number of median significant wave height values greater than 0.5m
  • units: 1
  • names: number of median significant wave height values greater than 0.5m
  • units: 1
  • var_id: swh_count_greater_than_1.00
  • long_name: number of median significant wave height values greater than 1.0m
  • names: number of median significant wave height values greater than 1.0m
  • units: 1
  • var_id: swh_count_greater_than_1.50
  • long_name: number of median significant wave height values greater than 1.5m
  • names: number of median significant wave height values greater than 1.5m
  • units: 1
  • var_id: swh_count_greater_than_10.00
  • long_name: number of median significant wave height values greater than 10.0m
  • names: number of median significant wave height values greater than 10.0m
  • var_id: swh_count_greater_than_2.00
  • long_name: number of median significant wave height values greater than 2.0m
  • units: 1
  • names: number of median significant wave height values greater than 2.0m
  • units: 1
  • var_id: swh_count_greater_than_2.50
  • long_name: number of median significant wave height values greater than 2.5m
  • names: number of median significant wave height values greater than 2.5m
  • units: 1
  • var_id: swh_count_greater_than_3.00
  • long_name: number of median significant wave height values greater than 3.0m
  • names: number of median significant wave height values greater than 3.0m
  • units: 1
  • var_id: swh_count_greater_than_3.50
  • long_name: number of median significant wave height values greater than 3.5m
  • names: number of median significant wave height values greater than 3.5m
  • var_id: swh_count_greater_than_4.00
  • long_name: number of median significant wave height values greater than 4.0m
  • units: 1
  • names: number of median significant wave height values greater than 4.0m
  • units: 1
  • var_id: swh_count_greater_than_5.00
  • long_name: number of median significant wave height values greater than 5.0m
  • names: number of median significant wave height values greater than 5.0m
  • units: 1
  • var_id: swh_count_greater_than_6.00
  • long_name: number of median significant wave height values greater than 6.0m
  • names: number of median significant wave height values greater than 6.0m
  • units: 1
  • var_id: swh_count_greater_than_8.00
  • long_name: number of median significant wave height values greater than 8.0m
  • names: number of median significant wave height values greater than 8.0m
  • var_id: swh_rms
  • units: m
  • long_name: rms of median significant wave height values
  • names: rms of median significant wave height values
  • var_id: time_bnds
  • units: m2
  • var_id: swh_log_squared_sum
  • long_name: total of median significant wave height log squared values
  • names: total of median significant wave height log squared values
  • var_id: swh_log_sum
  • long_name: total of median significant wave height log values
  • units: m
  • names: total of median significant wave height log values
  • units: m2
  • long_name: total of median significant wave height squared values
  • var_id: swh_squared_sum
  • names: total of median significant wave height squared values
  • long_name: total of median significant wave height values
  • var_id: swh_sum
  • units: m
  • names: total of median significant wave height values

Co-ordinate Variables

  • standard_name: latitude
  • var_id: lat
  • long_name: latitude
  • units: degrees_north
  • names: latitude
  • var_id: lon
  • units: degrees_east
  • standard_name: longitude
  • long_name: longitude
  • names: longitude
  • long_name: time
  • standard_name: time
  • var_id: time
  • names: time
Coverage
Temporal Range
Start time:
1991-07-31T23:00:00
End time:
2018-12-31T23:59:59
Geographic Extent

 
80.0000°
 
-180.0000°
 
180.0000°
 
-80.0000°