Improving ice sheet model calibration using paleoclimate and modern data
نویسندگان
چکیده
منابع مشابه
Assessing the Impact of Retreat Mechanisms in a Simple Antarctic Ice Sheet Model Using Bayesian Calibration
The response of the Antarctic ice sheet (AIS) to changing climate forcings is an important driver of sea-level changes. Anthropogenic climate change may drive a sizeable AIS tipping point response with subsequent increases in coastal flooding risks. Many studies analyzing flood risks use simple models to project the future responses of AIS and its sea-level contributions. These analyses have pr...
متن کاملImproving maps of ice-sheet surface elevation change using combined laser altimeter and stereoscopic elevation model data
We combine the complementary characteristics of laser altimeter data and stereoscopic digital elevation models (DEMs) to construct high-resolution ( 100m) maps of surface elevations and elevation changes over rapidly changing outlet glaciers in Greenland. Measurements from spaceborne and airborne laser altimeters have relatively low errors but are spatially limited to the ground tracks, while D...
متن کاملPliocene paleoclimate and East antarctic ice-sheet history from surficial ash deposits.
The preservation, age, and stratigraphic relation of an in situ ashfall layer with an underlying desert pavement in Arena Valley, southern Victoria Land, indicate that a cold-desert climate has persisted in Arena Valley during the past 4.3 million years. These data indicate that the present East Antarctic Ice Sheet has endured for this time and that average temperatures during the Pliocene in A...
متن کاملModelling the Interactions in Paleoclimate Data from Ice Cores
This paper considers methods for testing directions of causation in the paleoclimate series for temperature and CO2 concentration derived from Antarctic ice cores from 800,000 years BP. These series are well-known to move together in the transitions between glacial and interglacial periods, but the dynamic relationship between the series is open to dispute. Bivariate models are constructed, in ...
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ژورنال
عنوان ژورنال: The Annals of Applied Statistics
سال: 2016
ISSN: 1932-6157
DOI: 10.1214/16-aoas979