Contribution of Land water stOrage to Sea-level Rise

Informazioni relative al progetto

CLOSeR

ID dell’accordo di sovvenzione: 841407

DOI

10.3030/841407

Progetto chiuso

Data della firma CE 11 Aprile 2019

Data di avvio 1 Luglio 2019

Data di completamento 30 Giugno 2021

Finanziato da

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Costo totale

€ 224 933,76

Contributo UE

€ 224 933,76

Coordinato da

UNIVERSITY OF BRISTOL
United Kingdom

Periodic Reporting for period 1 - CLOSeR (Contribution of Land water stOrage to Sea-level Rise)

Periodo di rendicontazione: 2019-07-01 al 2021-06-30

Sintesi del contesto e degli obiettivi generali del progetto

Sea-level rise is one of the most dreadful consequences of future climate change. To estimate the associated risk and prepare ourselves better for its implications, we need to identify the spatiotemporal characteristics of the contributors to sea level change. Out of all the contributors, land water storage change is the most debated one because studies so far do not even agree on its sign. In the framework of CLOSeR (Contribution of Land water stOrage to Sea-level Rise), I will estimate the spatiotemporal characteristic of contribution from land water storage to sea-level rise between 2002 and 2020, in a robust statistical framework called BHM (Bayesian Hierarchical Modelling) with the help of: 1) multi-mission satellite altimetry data over oceans 2) a new data-driven leakage corrected GRACE product 3) steric information from ARGO floats and 4) a novel data-driven GIA model. I will develop a data-driven leakage corrected GRACE product for global applications, develop a BHM to solve for land water storage contribution while closing the sea-level budget, and identify the regions that contribute significantly to sea-level rise. The approach is unique, global in scale, and will address a multi-disciplinary problem comprehensively.

Lavoro eseguito dall’inizio del progetto fino alla fine del periodo coperto dalla relazione e principali risultati finora ottenuti

I have been able to process latest GRACE gravity field products and have developed tools to map the response of sea level to temporal changes in the gravity field of the Earth, commonly known as Sea Level Fingerprints. They represent the spatial distribution of sea level rise due to mass redistribution. We can clearly see that ice mas loss in Greenland and East Antarctica leads to a drop in relative sea level near these regions, while rest of the oceans is observing a rise in relative sea surface heights (see the attached figure).

Progressi oltre lo stato dell’arte e potenziale impatto previsto (incluso l’impatto socioeconomico e le implicazioni sociali più ampie del progetto fino ad ora)

will estimate the spatiotemporal characteristic of contribution from land water storage to sea-level rise between 2002 and 2020, in a robust statistical framework called BHM (Bayesian Hierarchical Modelling) with the help of: 1) multi-mission satellite altimetry data over oceans 2) a new data-driven leakage corrected GRACE product 3) steric information from ARGO floats and 4) a novel data-driven GIA model.

Sea level figerprints due to mass redistribution bwteen 2002 and 2017.