1. Air
Quality
Modeling
from
Forecast
to
Climate
Change
the
need
of
HPC
and
Supercompu<ng
in
this
area
Dr.
Agus?n
García
Reynoso
Centro
de
Ciencias
de
la
Atmósfera

2. Topics
• System
Descrip<on
• Air
quality
forecast
• Climate
change
and
Air
quality
• Other
sources
evalua<on
• Future

3. System
Descrip-on
MASTER
NODE
-­‐
2
Intel
Xeon
E5410
2.33
GHz
(4
cores
per
processor)
-­‐
8
Gb
RAM
-­‐
2
HD
1
Tb
SLAVE
NODES
(10
nodes
in
5
twins)
-­‐
2
Intel
Xeon
X5472
3.00
GHz
(4
cores
per
processor)
-­‐
16
Gb
RAM
-­‐
1
HD
250
Gb
"STORAGE"
-­‐
2
Intel
Xeon
E5462
2.80
GHz
(4
cores
per
processor)
-­‐
32
Gb
RAM
-­‐ 18
Tb
storage
capacity
(7
Tb
used)
SWITCH
INFINIBAND
-­‐
Switch
24
ports
(8
free)
SWITCH
ETHERNET
-­‐ Switch
16
ports
(4
free)

4. Other
systems
1
MacPro
with
4
cores
1
MacPro
with
8
cores
1
MacPro
with
12
cores
3
iMac
Intel
compilers
icc
and
ifort

5. So`ware
• Lunix
CENTOS,
Mac
OS
X
• Compilers
for
C
and
Fortran
(gnu,
intel
and
portland
group)
• Ruby,
java,
perl
• Libraries:
netcdf,
jasper,
png,
hdf5,
openmpi,
mpich,
parallel
netcdf

6. AIR
QUALITY
FORECAST

7. Air
Quality
Forecast
Importance
• In
Mexico
City
Metropolitan
Area
(MCMA)
the
ozone
levels
have
exceeded
the
standard
(110
ppb)
on
50%
of
the
days
in
2010.
The
programs
to
prevent
the
environmental
con<ngencies
are
applied
a`er
the
people
have
been
exposed
to
high
ozone
levels.
• An
air
quality
forecast
it
is
necessary
in
order
to
reduce
exposure
to
ozone
and
other
air
pollutants

8. Use
of
WRF-­‐Chem
with
METv3
evalua-on
code

10. AQ
forecast
web
page
Na<onal
Level:
Ozone
Central
Mexico:
Ozone
PM2.5
hfp://www.atmosfera.unam.mx/procca/Ozono.php

11. To
Do
• Combining
2
or
more
forecast
• Nes<ng
domains
• Upda<ng
emissions
inventories
from
sta<c
to
dynamic
emissions

12. CLIMATE
CHANGE

13. Dynamic Downscaling
RegCM3 is a compressible, finite difference model with hydrostatic balance and vertical sigma-coordinates.
Similar a MM5 pero adaptado para estudios climáticos.
Domain 2
100.6W-97.3W y 17.8N-21N
Grid of 140 x 140; ds=30km
Domain 1
122W-86W y 16N-32N
Grid of 160 x 80; ds=30km

14. Temperature
(°C).
Difference
between
reference
climatology
(1983-­‐1990)
and
scenario
(2071-­‐2073).

15. Ozone
reduc<on
in
Central
Mexico
under
a
climate
scenario

16. PBL
incrment

17. OTHER
SOURCES

18. Emissions
MCMA
200 O3 EAC
RAMA
150 MCCM
ppb
100
50
0
12:00 AM 12:00 PM 12:00 AM 12:00 PM 12:00 AM
4/14/07 4/15/07 4/16/07
dat
200
O3 TLA
RAMA
MCCM
150
ppb
100
50
0
12:00 AM 12:00 PM 12:00 AM 12:00 PM 12:00 AM
4/14/07 4/15/07 4/16/07
dat
200 O3 CUA
RAMA
MCCM
150
ppb
100
50
0
12:00 AM 12:00 PM 12:00 AM 12:00 PM 12:00 AM
4/14/07 4/15/07 4/16/07
dat

19. Emissions
MCMA
+
Toluca
200 O3 EAC
RAMA
MCCM
150
ppb
100
50
0
12:00 PM 12:00 AM 12:00 PM 12:00 AM 12:00 PM 12:00 AM
4/13/07 4/14/07 4/15/07 4/16/07
200 dat O3 TLA
RAMA
MCCM
150
ppb
100
50
0
12:00 PM 12:00 AM 12:00 PM 12:00 AM 12:00 PM 12:00 AM
4/13/07 4/14/07 4/15/07 4/16/07
dat
200 O3 CUA
RAMA
MCCM
150
ppb
100
50
0
12:00 PM 12:00 AM 12:00 PM 12:00 AM 12:00 PM 12:00 AM
4/13/07 4/14/07 4/15/07 4/16/07
dat

20. Emissions
MCMA
200 O3 EAC
RAMA
150 MCCM
ppb
100
50
0
12:00 AM 12:00 PM 12:00 AM 12:00 PM 12:00 AM
4/14/07 4/15/07 4/16/07
dat
200
O3 TLA
RAMA
MCCM
150
ppb
100
50
0
12:00 AM 12:00 PM 12:00 AM 12:00 PM 12:00 AM
4/14/07 4/15/07 4/16/07
dat
200 O3 CUA
RAMA
MCCM
150
ppb
100
50
0
12:00 AM 12:00 PM 12:00 AM 12:00 PM 12:00 AM
4/14/07 4/15/07 4/16/07
dat

21. Backtrajectories
From
Tula
region

22. Bactrajectories
From
Volcano
influence

25. FUTURE

26. Importance
of
HPC
• Increased
compu<ng
power
for
atmospheric
chemistry,
weather
and
climate
provided
informa<on
for
decision
makers,
scien<sts
and
general
public.
• Forecast
or
climate
predic<on
need
strong
scaling:
faster
nodes
and
processors,
not
more
of
them.
• The
new
genera<ons
of
mul<-­‐
and
many-­‐core
processors
are
an
op<on.
• Developments
in
so`ware
area
are
required
to
use
new
technologies.