Toggle Main Menu Toggle Search

Open Access padlockePrints

Ice-shelf elevation changes due to atmospheric pressure variations

Lookup NU author(s): Professor Matt King


Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


The inverse barometer effect (IBE) is the isostatic response of ocean surface height to changes in atmospheric pressure (Pair) at a rate of about 1 cm hPa-1. The IBE is a significant contributor to variability of ice-shelf surface elevation (ηice), as we demonstrate with simultaneous global positioning system measurements of ηice and local measurements of Pair from the Amery, Brunt and Ross Ice Shelves, Antarctica. We find that an IBE correction is justified for frequencies (ω) covering the "weather band", 0.03 < ω < 0.5 cpd (cycles per day). The IBE correction reduces the standard deviation of the weather-band signal of ηice from ∼9 cm to ∼3 cm. With this correction, the largest remaining high-frequency error signal in ηice is the inaccuracy of the present generation of Antarctic tide models, estimated to be of order 10 cm for most of Antarctica.

Publication metadata

Author(s): Padman L, King MA, Goring D, Corr H, Coleman R

Publication type: Article

Publication status: Published

Journal: Journal of Glaciology

Year: 2003

Volume: 49

Issue: 167

Pages: 521-526

ISSN (print): 0022-1430

ISSN (electronic): 1727-5652

Publisher: International Glaciological Society


DOI: 10.3189/172756503781830386


Altmetrics provided by Altmetric