New high resolution sea level product in some world coastal zones is now available!
The first version the XTRACK-ALES coastal sea level product is now avaialble. It consists in along-track (Level 2P) high resolution (20Hz) sea level anomalies during the period 2002-2015 in some regions of the coastal world ocean including the North East Atlantic, Mediterranean Sea and Western Africa.
The access to the product is described in the "Product" webpage of the website and the Product User Guide is available in the Public Documents section. Read more »
Publication on the SL_cci coastal sea level products
A new publication describing the CCI altimeter sea level products computed along the coast of Western Africa is now available: Read more »
The extension of the sea level CCI activities has started!
The extension of the ESA Climate Change Initiative program (CCI+) has recently started, including new research and development within the sea level project. The kick off meeting of the sea level SL_cci+ activities occured on 29th March 2019 and the project will last for three years.
The operational production of the climate-oriented altimeter sea level products has been taken over by the European Copernicus Climate Change Service (C3S). In this context, the SL_cci+ objectives are: Read more »
New paper from M. Passaro et al . "ALES+: Adapting a homogenous ocean retracker for satellite altimetry to sea ice leads, coastal and inland waters" has been recently published
Radar satellites supply the data used to map sea level and ocean currents. However, up until now the radar's "eyes" have been blind where the oceans are covered by ice. Researchers at the Technical University of Munich (TUM) have now developed a new analysis method to solve this problem.
The 1 year Bridging Phase of SL_cci project is started !
2018-03-18
2019-03-19
Europe/Rome
The kick-off of the "Bridging phase" activities for the SL_cci project occured on 16th of March, 2018. Objectives of these activities are mainly to continue research and development activities in order to improve the sea level content at climate scales and provide recommendations to C3S. Read more »
Legeais et al.: "An improved and homogeneous altimeter sea level record from the ESA Climate Change Initiative" is now published.
Following the release of the full reprocessing (v2.0) of the sea level ECV, the description of the validation of this dataset is now available in the following publication:
Legeais, J.-F., Ablain, M., Zawadzki, L., Zuo, H., Johannessen, J. A., Scharffenberg, M. G., Fenoglio-Marc, L., Fernandes, M. J., Andersen, O. B., Rudenko, S., Cipollini, P., Quartly, G. D., Passaro, M., Cazenave, A., and Benveniste, J.: An improved and homogeneous altimeter sea level record from the ESA Climate Change Initiative, Earth Syst. Sci. Data, 10, 281-301, https://doi.org/10.5194/essd-10-281-2018, 2018.
Note that the description of how this product has been built is already available in the following publication:
Quartly, G. D., Legeais, J.-F., Ablain, M., Zawadzki, L., Fernandes, M. J., Rudenko, S., Carrère, L., García, P. N., Cipollini, P., Andersen, O. B., Poisson, J.-C., Mbajon Njiche, S., Cazenave, A., and Benveniste, J.: A new phase in the production of quality-controlled sea level data, Earth Syst. Sci. Data, 9, 557-572, https://doi.org/10.5194/essd-9-557-2017, 2017.
See the "Products" webpage (www.esa-sealevel-cci.org/products) for additional information and access to the products. Read more »
SL_cci v2.0 global mean sea level corrected for Topex-A drift and with AVISO completion
25 years of Multi-mission global sea level trend from altimetry (1993-2017) based on ESA’s Climate Change Initiative Project (SL_cci) from 1993 to 2015, extended (in red) by multi-mission data processed by CNES (AVISO) until mid-2017 and further extended by Jason-3 "near real time" data up to 22 November 2017 (NB: the Topex-A drift correction has been applied on the 6 first years). The curve has been corrected for the GIA effect. The global mean sea level has increased by about 3 mm/yr on average but the black curve (a quadratic function fitted to the data) shows clear acceleration over the recent years. The objective of the ESA Sea Level Climate Change Initiative project is to provide stable, long-term satellite-based Sea Level products for climate applications.
© ESA (SL_cci) and CNES/LEGOS (AVISO) Read more »
The SL_cci Climate Assessment Report is available
Following the release of the SL_cci ECV v2.0, extensive validation has been carried out by the Climate Research Group. These validation results are presented in the Climate Assessment Report available here Read more »
New Arctic and Antarctic weekly gridded sea level product is now available.
A new DTU/TUM Arctic and Antarctic weekly gridded sea level product is now available. for more information and access to the product, see the Products web page.
