CGRG Bibliography of Canadian Geomorphology
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Author : Field, R.; Sturm, K.; and Moore, K.
Date : 2007.
Title : Regional modeling of the stable water isotopes over ice core sites in Canada.
Publication : CMOS, CGU, AMS Congress 2007. "Air, Ocean, Earth and Ice on the Rock". May 28 - June 1, 2007. St. John's Congress Centre, Newfoundland and Labrador, Canada.
Issue :
Page(s) : H02-2B4 .2
Abstract
Ice cores taken from Mt. Logan are unique among paleoclimate indicators in North America because of the mountain’s high altitude. Moisture at this elevation is thought to originate from remote sources, whereas moisture at lower altitudes is thought to originate from local sources. This source difference is thought to contribute to step function in the stable isotope composition of moisture with increasing altitude. The delta-18 decreases gradually between up to 5km, but decreases rapidly above this elevation. To better understand this behaviour, were are using the REMOiso regional climate model. REMOiso is an isotopically-equipped version of Max Planck Institute for Meteorology’s regional model. We are currently running the model at 0.5 degree horizontal resolution with 31 vertical layers, which allows for much higher resolution of topography than a general circulation model. This is expected to provide much more realistic modeling of the stable behaviour at Mt. Logan. This talk will discuss preliminary results from REMOiso, focusing on the modeled vertical structure of isotopic composition and moisture transport over the northeast Pacific Ocean.
Bibliography of Canadian Geomorphology