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Dataset

 

ESA Sea State Climate Change Initiative (Sea_State_cci) : Global remote sensing merged multi-mission monthly gridded significant wave height from altimetry, L4 product, version 3

Update Frequency: Not Planned
Latest Data Update: 2022-09-30
Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2022-10-10
DOI Publication Date: 2022-10-11
Download Stats: last 12 months
Dataset Size: 224 Files | 395MB
Abstract

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

This dataset contains the Version 3 Remote Sensing Significant Wave 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.

The altimeter data used in the Sea State CCI dataset v3 come from multiple satellite missions spanning from 2002 to 2021 ( Envisat, CryoSat-2, Jason-1, Jason-2, Jason-3, SARAL, Sentinel-3A), therefore spanning over a shorter time range than version 1.1. Unlike version 1.1, this version 3 involved a complete and consistent retracking of all the included altimeters. 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. (2022): ESA Sea State Climate Change Initiative (Sea_State_cci) : Global remote sensing merged multi-mission monthly gridded significant wave height from altimetry, L4 product, version 3. NERC EDS Centre for Environmental Data Analysis, 11 October 2022. doi:10.5285/9c350d4ff7ee438f9f1fc7252cbb2282. https://dx.doi.org/10.5285/9c350d4ff7ee438f9f1fc7252cbb2282
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
 ESA CCI Sea State project website

Process overview

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

Computation Element: 1

Title Derivation of ESA Sea State Climate Change Initiative (Sea_State_cci): Global remote sensing multi-mission along-track significant wave height from altimetery, version 3 datasets
Abstract For information on the derivation of the Sea_State_cci Global remote sensingmulti-mission along-track significant wave height from altimetery version 3 products please see the product user guide.
Input Description None
Output Description None
Software Reference None
Output Description

None
  • var_id: crs
  • var_id: lat_bnds
  • var_id: lon_bnds
  • units: m
  • long_name: maximum median significant wave height value
  • var_id: swh_max
  • units: m
  • long_name: mean of median significant wave height values
  • var_id: swh_mean
  • units: 1
  • long_name: number of median significant wave height values
  • var_id: swh_count
  • units: 1
  • long_name: number of median significant wave height values greater than 0.5m
  • var_id: swh_count_greater_than_0.50
  • units: 1
  • long_name: number of median significant wave height values greater than 1.0m
  • var_id: swh_count_greater_than_1.00
  • units: 1
  • long_name: number of median significant wave height values greater than 1.5m
  • var_id: swh_count_greater_than_1.50
  • units: 1
  • long_name: number of median significant wave height values greater than 10.0m
  • var_id: swh_count_greater_than_10.00
  • units: 1
  • long_name: number of median significant wave height values greater than 2.0m
  • var_id: swh_count_greater_than_2.00
  • units: 1
  • long_name: number of median significant wave height values greater than 2.5m
  • var_id: swh_count_greater_than_2.50
  • units: 1
  • long_name: number of median significant wave height values greater than 3.0m
  • var_id: swh_count_greater_than_3.00
  • units: 1
  • long_name: number of median significant wave height values greater than 3.5m
  • var_id: swh_count_greater_than_3.50
  • units: 1
  • long_name: number of median significant wave height values greater than 4.0m
  • var_id: swh_count_greater_than_4.00
  • units: 1
  • long_name: number of median significant wave height values greater than 5.0m
  • var_id: swh_count_greater_than_5.00
  • units: 1
  • long_name: number of median significant wave height values greater than 6.0m
  • var_id: swh_count_greater_than_6.00
  • units: 1
  • long_name: number of median significant wave height values greater than 8.0m
  • var_id: swh_count_greater_than_8.00
  • units: m
  • var_id: swh_rms
  • long_name: rms of median significant wave height values
  • units: seconds
  • var_id: time_bnds
  • units: m2
  • long_name: total of median significant wave height log squared values
  • var_id: swh_log_squared_sum
  • units: m
  • long_name: total of median significant wave height log values
  • var_id: swh_log_sum
  • units: m2
  • long_name: total of median significant wave height squared values
  • var_id: swh_squared_sum
  • units: m
  • long_name: total of median significant wave height values
  • var_id: swh_sum

Co-ordinate Variables

  • units: degree_north
  • standard_name: latitude
  • var_id: lat
  • units: degree_east
  • standard_name: longitude
  • var_id: lon
  • standard_name: time
  • var_id: time
  • units: seconds
  • long_name: measurement time
Coverage
Temporal Range
Start time:
2002-06-01T00:00:00
End time:
2021-01-31T23:59:59
Geographic Extent

 
80.0000°
  
-180.0000°
  
180.0000°
 
-80.0000°
  
Related parties
Authors (3)
Publishers (1)