Other
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufm.g13a0639d&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #G13A-0639
Other
0720 Glaciers, 1217 Time Variable Gravity (7223, 7230), 1218 Mass Balance (0762, 1223, 1631, 1836, 1843, 3010, 3322, 4532), 1225 Global Change From Geodesy (1222, 1622, 1630, 1641, 1645, 4556)
Scientific paper
Changes in the climate system affect the geodetic properties of the planet as a whole; ablation of land ice, in particular, directly impacts the Earth's dynamic oblateness (J2) by redistributing water mass from high latitudes to the global ocean. Dickey et al. (2002) discovered a pronounced geodetic signature of glacial melting beginning in 1997, and showed that it accounted for a substantial portion of a large J2 anomaly that occurred during the last large ENSO event and its aftermath. Melting of Alaskan glaciers made the largest sea level contribution of the regional glacier groupings during this time, coincident with extremely high air temperature anomalies over the region. In this study we consider mass balance changes in Alaskan glaciers during the GRACE era, combining time-variable gravity retrievals with other interdisciplinary data types including output from the most recent hydrology models, to assess further changes of land ice mass balances in this key region and their contributions to ongoing global geodetic and sea level changes.
Dickey Jean O.
Landerer Felix W.
Marcus Steve L.
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