| 1
Model identification |
Soil
Erosion Network - Model |
|
|
|
1.1
Model name |
Dust
Entrainment and Deposition (DEAD) Model |
|
1.2
Most recent version |
1.3.2 |
|
1.3
Date of release |
January
2003 |
|
|
| 2
Wind Erosion |
|
|
|
| 3
Contact person |
|
|
3.1
Name |
Dr
Charles Zender |
|
3.2
Address |
Department
of Earth System Science
University of California at Irvine
Irvine, CA 92697-3100
USA
|
|
3.3
Tel |
+1
(949) 824-2987 |
|
3.4
Fax |
+1
(949) 856-9787 |
|
3.5
Email |
zender@uci.edu |
|
| 4
Model Author(s) |
Drs
Charlie Zender, Phil Rasch, Natalie Mahowald, Gordon Bonan |
|
| 5
Model components |
|
5.1
Water erosion: |
- |
|
5.2
Wind erosion: |
Based
on saltation-sandblasting theory |
|
5.3
Hydrology: |
Depends
on host model; usually LSM/CLM Bonan (1996) |
|
5.4
Site/topography: |
Global,
GTOPO30 topography |
|
5.5
Plant growth: |
Depends
on host model; usually 4 patches per gridcell, with prescribed
annual cycle derived from NDVI
|
|
5.6
Management: |
- |
|
5.7
Soil: |
Depends
on host model, usually 6-10 levels |
|
5.8
Chemistry: |
Depends
on host model |
|
5.9
Weather: |
Depends
on host model: usually 3-6 hourly global NCEP of ECMWF analyses,
or interactive 20-40 minute GCM predictions |
|
| 6
Model characteristics |
|
6.1
Spatial |
|
|
|
6.1.1
Class of area: |
Global,
usually 1-4 degree lat/lon resolution |
|
|
6.1.2
Flow routing system: |
Depends
on host model; usually no flow routing, or RTM routing of Famiglietti |
|
|
6.1.3
Minimum area: |
One
square meter. The dust model runs in a box-model mode, as well
as in global model mode |
|
|
6.1.4
Maximum area: |
Global |
|
6.2.
Temporal |
Simulates
10 minutes - many centuries |
|
|
6.2.1
Timestep: |
Depends
on host model, usually 10-60 minutes |
|
|
6.2.2
Single or multiple event? |
Multiple |
|
|
6.2.3
Maximum simulation duration: |
1000
years |
|
|
| 7
Model's representation of processes |
|
|
7.1
Water erosion processes |
|
|
|
7.1.1
Interrill: |
- |
|
|
7.1.2
Rill: |
- |
|
|
7.1.3
Gully: |
- |
|
|
7.1.4
Streambank: |
- |
|
|
7.1.5
Deposition: |
- |
|
7.2
Wind erosion processes: |
Sandblasting
(Alfaro and Gomes, 2001), Threshold frictions (Iversen and White,
1981) |
|
|
7.2.1
Creep/surface roll: |
|
|
|
7.2.2
Saltation: |
Yes
(White, 1979) |
|
|
7.2.3
Suspension |
|
|
|
|
|
7.3
Hydrological processes: |
Critical
gravimetric water content for soil moisture inhibition of erosion
(Fecan et al) |
|
|
7.3.1
Evaporation/transpiration: |
Energy
balance turbulent fluxes (Bonan, 1996) |
|
|
7.3.2
Runoff: |
Depends
on host model |
|
|
7.3.3
Infiltration |
Depends
on host model |
|
|
7.3.4
Subsurface flow: |
Depends
on host model |
|
|
7.3.5
Return flow |
Depends
on host model |
|
|
|
|
7.4
Plant processes: |
|
|
|
7.4.1
Light interception and photsynthesis: |
Depends
on host model |
|
|
7.4.2
Dry matter and residue |
Depends
on host model |
|
|
7.4.3
Root growth: |
Depends
on host model |
|
|
7.4.4
Pests: |
None |
|
|
7.4.5
CO2 sensitivity: |
Depends
on host model |
|
|
|
|
7.5
Soil: |
Texture
distribution from IGBP-DIS, 6-10 layers |
|
|
7.5.1
Crust development |
None |
|
|
7.5.2
Aggregate properties |
|
|
|
|
|
7.6
Chemistry: |
|
|
|
7.6.1
Nutrients: |
Minerals
used as passive tracers |
|
|
7.6.2
Carbon |
Depends
on host model |
|
|
7.6.3
Pesticides |
None |
|
|
7.6.4
Other contaminants |
None |
|
|
|
|
7.7
Weather: |
Interactive
(GCM) or prescribed(CTM) |
|
| 8
Input Data (* = Mandatory) |
|
8.1
Weather: |
Precipitation*,
surface air temperature*, humidity*, pressure*, winds*, radiative
fluxes* |
|
8.2
Soil: |
Optional,
texture defaults to IGBP-DIS |
|
8.3
Hydrology: |
None
required |
|
8.4
Plant cover: |
Optional,
defaults to Kergoat (199?) |
|
8.5
Soil surface cover: |
|
|
8.6
Management: |
- |
|
8.7
Topography/site characteristics: = |
Optional,
defaults to GTOPO30 |
|
8.8
Micro-topography: |
- |
|
8.9
Other |
Optional
apherical particle shape specification |
|
| 9
Output data |
Size resolved
particle number and mass fluxes, optical depth, radiative
effects, boundary layer turbulence parameters
|
|
| 10
Programming language |
Fortran
90 |
|
| 11
Computer requirements |
PC
for box model mode, supercomputer for climate simulations |
|
| 12
Documentation |
|
12.1
Scientific documentation: |
Zender,
C. S., H. Bian, and D. Newman, The mineral Dust Entrainment
And Deposition (DEAD) model: Description and 1990's dust climatology,
In Press in J. Geophys. Res., 2003.
Zender,
C. S., D. Newman, and O. Torres, Spatial Heterogeneity in
Aeolian Erodibility: Uniform, Topographic, Geomorphic, and
Hydrologic Hypotheses, In Press in J. Geophys. Res., 2003.
|
|
12.2
User's guide: |
In
preparation |
|
12.3
Technical documentation: |
http://dust.ess.uci.edu/dead |
|
| 13
Availability |
http://dust.ess.uci.edu/dead |
| 14
Other Relevant Information |
Homepage
links to all relevant papers. Box model runs online over the
Web for easy demonstration of sensitivity tests.
|
|
