Testing for Dynamical Dependence: Application to the Surface Mass Balance Over Antarctica

Dynamical dependence between key observables and the surface mass balance (SMB) over Antarctica is analyzed in two historical runs performed with the MPIâ€ESMâ€P and the CESM1â€CAM5 climate models. The approach used is a novel method allowing for evaluating the rate of information transfer between o...

Full description

Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Vannitsem, Stéphane, Dalaiden, Quentin, Goosse, Hugues
Other Authors: UCL - SST/ELI/ELIC - Earth & Climate
Format: Article in Journal/Newspaper
Language:English
Published: Wiley-Blackwell Publishing, Inc. 2019
Subjects:
General Earth and Planetary Sciences
Geophysics
Antarctic
Dronning Maud Land
The Antarctic
Weddell
Weddell Sea
Antarc*
Antarctica
Sea ice
Online Access:http://hdl.handle.net/2078.1/224455
https://doi.org/10.1029/2019gl084329
Description
Summary:Dynamical dependence between key observables and the surface mass balance (SMB) over Antarctica is analyzed in two historical runs performed with the MPIâ€ESMâ€P and the CESM1â€CAM5 climate models. The approach used is a novel method allowing for evaluating the rate of information transfer between observables that goes beyond the classical correlation analysis and allows for directional characterization of dependence. It reveals that a large proportion of significant correlations do not lead to dependence. In addition, three coherent results concerning the dependence of SMB emerge from the analysis of both models: (i) The SMB over the Antarctic Plateau is mostly influenced by the surface temperature and sea ice concentration and not by largeâ€scale circulation changes; (ii) the SMB of the Weddell Sea and the Dronning Maud Land coasts are not influenced significantly by the surface temperature; and (iii) the Weddell Sea coast is not significantly influenced by the sea ice concentration.

Similar Items