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Your
query was:
an="B34B-03"
HR: 16:30h
AN: B34B-03 INVITED
TI: Deposition
Changes in the Past And The Future
AU: * Mahowald, N
EM: mahowald@ucar.edu
AF: NCAR, 1850 Table Mesa Rd., Boulder, CO 80307
United States
AU: Muhs, D
EM: dmuhs@usgs.gov
AF: USGS, Denver Federal Center, Denver, CO 80225
United States
AU: Levis, S
EM: slevis@ucar.edu
AF: NCAR, 1850 Table Mesa Rd., Boulder, CO 80307
United States
AU: Yoshioka, M
EM: yoshioka@ucar.edu
AF: NCAR, 1850 Table Mesa Rd., Boulder, CO 80307
United States
AU: Rasch, P
EM: pjr@Ucar.edu
AF: NCAR, 1850 Table Mesa Rd., Boulder, CO 80307
United States
AU: Zender, C
EM: zender@Uci.edu
AF: Earth System Science Dept, UCI, Irvine, CA
94697 United States
AU: Okin, G
EM: okin@virginia.edu
AF: Dept. of Env. Sci., UVa, Charlottesville, VA
00920 United States
AU: Painter, T
EM: tpainter@kryos.colorado.edu
AF: NSIDC, CSES, Boulder, CO 80309 United States
AB: Desert dust simulations generated by the
National Center for Atmospheric Research's Community Climate System Model for
the current climate are shown to be consistent with present day satellite and
deposition data. The response of the dust cycle to last glacial maximum,
pre-industrial, modern and doubled-carbon dioxide climates is analyzed. Only
`natural' dust sources are included in this simulation. Similar to some
previous studies, dust production mainly responds to changes in the source
areas from vegetation changes, not from winds or soil moisture changes alone.
This model simulates a +92, +33 and -60 percent change in dust for the last
glacial maximum, pre-industrial and doubled-carbon dioxide climate,
respectively, when impacts of carbon dioxide fertilization on vegetation are
included in the model. We also consider the impact of glaciogenic sources on
last glacial maximum dust, and increase our dust flux in the last glacial
maximum from 2.1 to 3.3 times current deposition with the inclusion of
glaciogenic sources. The resulting changes in deposition to snow covered
areas is analyzed and the impacts calculated.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0312 Air/sea constituent fluxes (3339, 4504)
SC: Biogeosciences [B]
MN: Fall Meeting 2005
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