HR: 1400h
AN: G43B-04    [Abstracts]
TI: Impact of Solar activity, Volcanic and Greenhouse gases forcings in Atmospheric Angular Momentum variability and length of the day for the 20th century as seen in IPCC coupled simulations
AU: * rodrigo, a
EM: roabarca@udec.cl
AF: Departamento de Geofisica, Universidad de Concepcion 160-C, Concepcion, Chile
AU: Elias, O
EM: eovalle@udec.cl
AF: Departamento de Geofisica, Universidad de Concepcion 160-C, Concepcion, Chile
AU: David, S
EM: dsalstei@aer.com
AF: Atmospheric and Environmental Research (AER) Inc, Hatwell Avenue 02421-3126, MA , United States
AB: Different scenarios taking into account key forcings (Solar activity, volcanic activity, different greenhouse gases, as well as combinations of these) has been selected for the IPCC for understanding their respective impact in the global climate of the 20th century and possible effect in futures climates. In this research we show the results related with the atmospheric angular momentum computed from the different model runs (more than 50 different runs) under different scenarios performed by NCAR coupled models, which simulated the 20th century climate variability. We investigated particularly the difference in the role played at decadal time scales and trend of the solar and volcanic forcings.
DE: 0370 Volcanic effects (8409)
DE: 1225 Global change from geodesy (1222, 1622, 1630, 1641, 1645, 4556)
DE: 1239 Earth rotation variations
DE: 1616 Climate variability (1635, 3305, 3309, 4215, 4513)
DE: 1626 Global climate models (3337, 4928)
SC: Geodesy [G]
MN: 2007 Joint Assembly