Global Sea Level Budget Assessment: Preliminary Results From ESA's CCI Sea Level Budget Closure Project

M. Horwath, A. Cazenave, H. Palanisamy, B. Marzeion , F. Paul, R. Le Bris, A. Hogg, I. Otosaka, A. Shepherd, P. Döll, D. Caceres, H. Müller Schmied, J. Johannessen, J. Nilsen, R. Raj, R. Forsberg, L. Sandberg Sørensen, V. Barletta, P. Knudsen, O. Andersen & 8 others H. Villadsen, C. Merchant, C. Old, K. von Schuckmann, B. Gutknecht, K. Novotny , A. Groh , J. Benveniste

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Abstract

Studies of the sea level budget are a means of assessing and understanding how sea level is changing and what are the causes. Closure of the total sea level budget implies that the observed changes of global mean sea level as determined from satellite altimetry equal the sum of observed (or otherwise assessed) contributions, namely changes in ocean mass and ocean thermal expansion and haline contraction. Here, ocean mass changes can be either derived from GRACE satellite gravimetry (since 2002) or from assessments of the individual contributions from glaciers, ice sheets, land water storage, snow pack and atmospheric water content. Estimates of thermosteric sea level are obtained from ocean in situ measurements with additional plans for the inclusion of satellite derived Sea Surface Temperature information. Misclosure of the sea level budget indicates errors in some of the components or contributions from missing or unassessed elements in the budget. ESA's Climate Change Initiative (CCI) has conducted a number of projects related to sea level. Among those projects, the Sea Level CCI project, the Greenland and Antarctic Ice Sheet CCI projects and the Glaciers CCI project directly benefit from satellite altimetry data. The Glaciers CCI project and the Sea Surface Temperature CCI project provide additional insights into phenomena related to sea level change. The aim of the ongoing CCI Sea Level Budget Closure project is to use the CCI data products, together with further data products provided by the project partners to re-assess the sea level budget. Specifically, the project further develops and analyzes products based on the CCI projects mentioned above in conjunction with in situ data for ocean thermal expansion (e.g., Argo), GRACEbased ocean mass change assessments, and modelbased data for glaciers and land hydrology. The work benefits from directly involving the expertise on the product generation for all the involved sea level contributions.
Original languageEnglish
Publication date2018
Number of pages1
Publication statusPublished - 2018
Event25 years of progress in radar altimetry symposium - , Portugal
Duration: 24 Sep 201829 Sep 2018

Conference

Conference25 years of progress in radar altimetry symposium
CountryPortugal
Period24/09/201829/09/2018

Cite this

Horwath, M., Cazenave, A., Palanisamy, H., Marzeion , B., Paul, F., Le Bris, R., ... Benveniste, J. (2018). Global Sea Level Budget Assessment: Preliminary Results From ESA's CCI Sea Level Budget Closure Project. 87. Abstract from 25 years of progress in radar altimetry symposium, Portugal.
Horwath, M. ; Cazenave, A. ; Palanisamy, H. ; Marzeion , B. ; Paul, F. ; Le Bris, R. ; Hogg, A. ; Otosaka, I. ; Shepherd, A. ; Döll, P. ; Caceres, D. ; Müller Schmied, H. ; Johannessen, J. ; Nilsen, J. ; Raj, R. ; Forsberg, R. ; Sandberg Sørensen, L. ; Barletta, V. ; Knudsen, P. ; Andersen, O. ; Villadsen, H. ; Merchant, C. ; Old, C. ; von Schuckmann, K. ; Gutknecht, B. ; Novotny , K. ; Groh , A. ; Benveniste, J. / Global Sea Level Budget Assessment: Preliminary Results From ESA's CCI Sea Level Budget Closure Project. Abstract from 25 years of progress in radar altimetry symposium, Portugal.1 p.
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abstract = "Studies of the sea level budget are a means of assessing and understanding how sea level is changing and what are the causes. Closure of the total sea level budget implies that the observed changes of global mean sea level as determined from satellite altimetry equal the sum of observed (or otherwise assessed) contributions, namely changes in ocean mass and ocean thermal expansion and haline contraction. Here, ocean mass changes can be either derived from GRACE satellite gravimetry (since 2002) or from assessments of the individual contributions from glaciers, ice sheets, land water storage, snow pack and atmospheric water content. Estimates of thermosteric sea level are obtained from ocean in situ measurements with additional plans for the inclusion of satellite derived Sea Surface Temperature information. Misclosure of the sea level budget indicates errors in some of the components or contributions from missing or unassessed elements in the budget. ESA's Climate Change Initiative (CCI) has conducted a number of projects related to sea level. Among those projects, the Sea Level CCI project, the Greenland and Antarctic Ice Sheet CCI projects and the Glaciers CCI project directly benefit from satellite altimetry data. The Glaciers CCI project and the Sea Surface Temperature CCI project provide additional insights into phenomena related to sea level change. The aim of the ongoing CCI Sea Level Budget Closure project is to use the CCI data products, together with further data products provided by the project partners to re-assess the sea level budget. Specifically, the project further develops and analyzes products based on the CCI projects mentioned above in conjunction with in situ data for ocean thermal expansion (e.g., Argo), GRACEbased ocean mass change assessments, and modelbased data for glaciers and land hydrology. The work benefits from directly involving the expertise on the product generation for all the involved sea level contributions.",
author = "M. Horwath and A. Cazenave and H. Palanisamy and B. Marzeion and F. Paul and {Le Bris}, R. and A. Hogg and I. Otosaka and A. Shepherd and P. D{\"o}ll and D. Caceres and {M{\"u}ller Schmied}, H. and J. Johannessen and J. Nilsen and R. Raj and R. Forsberg and {Sandberg S{\o}rensen}, L. and V. Barletta and P. Knudsen and O. Andersen and H. Villadsen and C. Merchant and C. Old and {von Schuckmann}, K. and B. Gutknecht and K. Novotny and A. Groh and J. Benveniste",
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language = "English",
pages = "87",
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Horwath, M, Cazenave, A, Palanisamy, H, Marzeion , B, Paul, F, Le Bris, R, Hogg, A, Otosaka, I, Shepherd, A, Döll, P, Caceres, D, Müller Schmied, H, Johannessen, J, Nilsen, J, Raj, R, Forsberg, R, Sandberg Sørensen, L, Barletta, V, Knudsen, P, Andersen, O, Villadsen, H, Merchant, C, Old, C, von Schuckmann, K, Gutknecht, B, Novotny , K, Groh , A & Benveniste, J 2018, 'Global Sea Level Budget Assessment: Preliminary Results From ESA's CCI Sea Level Budget Closure Project' 25 years of progress in radar altimetry symposium, Portugal, 24/09/2018 - 29/09/2018, pp. 87.

Global Sea Level Budget Assessment: Preliminary Results From ESA's CCI Sea Level Budget Closure Project. / Horwath, M.; Cazenave, A.; Palanisamy, H.; Marzeion , B.; Paul, F.; Le Bris, R.; Hogg, A.; Otosaka, I.; Shepherd, A.; Döll, P.; Caceres, D.; Müller Schmied, H.; Johannessen, J.; Nilsen, J.; Raj, R.; Forsberg, R.; Sandberg Sørensen, L.; Barletta, V.; Knudsen, P.; Andersen, O.; Villadsen, H.; Merchant, C.; Old, C.; von Schuckmann, K.; Gutknecht, B.; Novotny , K.; Groh , A.; Benveniste, J.

2018. 87 Abstract from 25 years of progress in radar altimetry symposium, Portugal.

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

TY - ABST

T1 - Global Sea Level Budget Assessment: Preliminary Results From ESA's CCI Sea Level Budget Closure Project

AU - Horwath, M.

AU - Cazenave, A.

AU - Palanisamy, H.

AU - Marzeion , B.

AU - Paul, F.

AU - Le Bris, R.

AU - Hogg, A.

AU - Otosaka, I.

AU - Shepherd, A.

AU - Döll, P.

AU - Caceres, D.

AU - Müller Schmied, H.

AU - Johannessen, J.

AU - Nilsen, J.

AU - Raj, R.

AU - Forsberg, R.

AU - Sandberg Sørensen, L.

AU - Barletta, V.

AU - Knudsen, P.

AU - Andersen, O.

AU - Villadsen, H.

AU - Merchant, C.

AU - Old, C.

AU - von Schuckmann, K.

AU - Gutknecht, B.

AU - Novotny , K.

AU - Groh , A.

AU - Benveniste, J.

PY - 2018

Y1 - 2018

N2 - Studies of the sea level budget are a means of assessing and understanding how sea level is changing and what are the causes. Closure of the total sea level budget implies that the observed changes of global mean sea level as determined from satellite altimetry equal the sum of observed (or otherwise assessed) contributions, namely changes in ocean mass and ocean thermal expansion and haline contraction. Here, ocean mass changes can be either derived from GRACE satellite gravimetry (since 2002) or from assessments of the individual contributions from glaciers, ice sheets, land water storage, snow pack and atmospheric water content. Estimates of thermosteric sea level are obtained from ocean in situ measurements with additional plans for the inclusion of satellite derived Sea Surface Temperature information. Misclosure of the sea level budget indicates errors in some of the components or contributions from missing or unassessed elements in the budget. ESA's Climate Change Initiative (CCI) has conducted a number of projects related to sea level. Among those projects, the Sea Level CCI project, the Greenland and Antarctic Ice Sheet CCI projects and the Glaciers CCI project directly benefit from satellite altimetry data. The Glaciers CCI project and the Sea Surface Temperature CCI project provide additional insights into phenomena related to sea level change. The aim of the ongoing CCI Sea Level Budget Closure project is to use the CCI data products, together with further data products provided by the project partners to re-assess the sea level budget. Specifically, the project further develops and analyzes products based on the CCI projects mentioned above in conjunction with in situ data for ocean thermal expansion (e.g., Argo), GRACEbased ocean mass change assessments, and modelbased data for glaciers and land hydrology. The work benefits from directly involving the expertise on the product generation for all the involved sea level contributions.

AB - Studies of the sea level budget are a means of assessing and understanding how sea level is changing and what are the causes. Closure of the total sea level budget implies that the observed changes of global mean sea level as determined from satellite altimetry equal the sum of observed (or otherwise assessed) contributions, namely changes in ocean mass and ocean thermal expansion and haline contraction. Here, ocean mass changes can be either derived from GRACE satellite gravimetry (since 2002) or from assessments of the individual contributions from glaciers, ice sheets, land water storage, snow pack and atmospheric water content. Estimates of thermosteric sea level are obtained from ocean in situ measurements with additional plans for the inclusion of satellite derived Sea Surface Temperature information. Misclosure of the sea level budget indicates errors in some of the components or contributions from missing or unassessed elements in the budget. ESA's Climate Change Initiative (CCI) has conducted a number of projects related to sea level. Among those projects, the Sea Level CCI project, the Greenland and Antarctic Ice Sheet CCI projects and the Glaciers CCI project directly benefit from satellite altimetry data. The Glaciers CCI project and the Sea Surface Temperature CCI project provide additional insights into phenomena related to sea level change. The aim of the ongoing CCI Sea Level Budget Closure project is to use the CCI data products, together with further data products provided by the project partners to re-assess the sea level budget. Specifically, the project further develops and analyzes products based on the CCI projects mentioned above in conjunction with in situ data for ocean thermal expansion (e.g., Argo), GRACEbased ocean mass change assessments, and modelbased data for glaciers and land hydrology. The work benefits from directly involving the expertise on the product generation for all the involved sea level contributions.

M3 - Conference abstract for conference

SP - 87

ER -

Horwath M, Cazenave A, Palanisamy H, Marzeion B, Paul F, Le Bris R et al. Global Sea Level Budget Assessment: Preliminary Results From ESA's CCI Sea Level Budget Closure Project. 2018. Abstract from 25 years of progress in radar altimetry symposium, Portugal.