First-Cut PLUSnet-05 modeling domains
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(Click on image for full resolution
figure) |
To the right are the proposed Harvard modeling domains for PLUSnet-05,
overlying a 1 minute
topography
used in our previous Corsican Channel work and the
GSHHS
coastlines. Included on the figure is an outline of the primary working
area (green).
The Harvard domains (outlined in white) are a pair 2-way nestable grids and
a smaller 1-way nesting domain. The basic rational for these domain are:
- Elba (Largest)
- A domain covering the approaches to Pianosa out as far as Elba. This
domain encompasses all possible sampling.
- Extended-Mini (Middle)
- A domain centered on the Mini-HOPS domain but extended out about 2.5km.
This domain is 2-way nested in the Elba domain and provides adjusted, high
resolution
initial & boundary conditions for the Mini-HOPS domain.
- Mini-HOPS (Smallest)
- A 10km domain centered on the primary activity area. Designed for fast
execution and ESSE compatability.
Speed estimates are made by comparing the grid sizes against 2 different
experiments that were run with the given time steps.
|
Elba |
Extended-Mini |
Mini-HOPS |
Resolution |
300m |
100m |
100m |
Size |
nx × ny × nz |
149×150×21 |
149×150×21 |
101×102×21 |
Extent |
44.4×44.7 km |
14.8×14.9 km |
10.1×10.2 km |
Domain center |
42.59°N, 10.12°E |
42.59°N, 10.12°E |
42.59°N, 10.12°E |
Domain rotation |
0° |
0° |
0° |
Speed |
dt=150s |
64 minutes/(model day) |
64 minutes/(model day) |
30 minutes/(model day) |
dt=300s |
33 minutes/(model day) |
33 minutes/(model day) |
15 minutes/(model day) |
First-Alternate PLUSnet-05 modeling domains
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(Click on image for full resolution
figure) |
A quick review of the real-time
GOATS/MEANS 2000,
ASCOT-02,
and the
reanalysis
of the MREA03/BP03 experiments revealed
- Generally, flows into the region of primary interest are from the East.
Less so in the reanalysis.
- North/South stretching occurs near Pianosa.
These observations suggested shifting the Mini-HOPS domain to
the East and stretching it in the North/South. Additionally, the absence
of expected data in the western and southern regions of the Elba
domain suggested retreating those boundaried as well. The resulting
set of domains are displayed to the right, with domain descriptions and
timing estimates given below.
A couple of the trade-offs in designing these domains:
- The circulation around Pianosa is now only maintained at the coarser
resolution.
- The southern and western boundaries of the Elba domain are much
closer to the domains of interest.
|
Elba |
Extended-Mini |
Mini-HOPS |
Resolution |
300m |
100m |
100m |
Size |
nx × ny × nz |
93×110×21 |
137×162×21 |
89×114×21 |
Extent |
27.6×32.7 km |
13.6×16.1 km |
8.8×11.3 km |
Domain center |
42.65°N, 10.20°E |
42.59°N, 10.14°E |
42.59°N, 10.14°E |
Domain rotation |
0° |
0° |
0° |
Speed |
dt=150s |
30 minutes/(model day) |
64 minutes/(model day) |
30 minutes/(model day) |
dt=300s |
15 minutes/(model day) |
33 minutes/(model day) |
15 minutes/(model day) |
Second-Alternate PLUSnet-05 modeling domains
A further review of the real-time
GOATS/MEANS 2000,
ASCOT-02,
and the
reanalysis
of the MREA03/BP03 experiments has suggested a couple of changes to the
Elba domain
- Extended further East to maintain more potential inflow.
- Extended further South to better isolate the primary domains of
interest from recurring southern boundary noise.
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|
(Click on image for full resolution
figure) |
|
Elba |
Extended-Mini |
Mini-HOPS |
Resolution |
300m |
100m |
100m |
Size |
nx × ny × nz |
112×126×21 |
137×162×21 |
89×114×21 |
Extent |
33.3×37.5 km |
13.6×16.1 km |
8.8×11.3 km |
Domain center |
42.63°N, 10.23°E |
42.59°N, 10.14°E |
42.59°N, 10.14°E |
Domain rotation |
0° |
0° |
0° |
Speed |
dt=150s |
41 minutes/(model day) |
64 minutes/(model day) |
30 minutes/(model day) |
dt=300s |
21 minutes/(model day) |
33 minutes/(model day) |
15 minutes/(model day) |
PLUSnet-05 Working Grids
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(Click on images for expanded
figures) |