Transcript My Work at the German Aerospace Center pl: Niemieckie Centrum Badań Lotniczych i Kosmicznych de: Deutsches Zentrum für Luft- und Raumfahrt (DLR) Arthur Schady Folie.

My Work at the
German Aerospace Center
pl: Niemieckie Centrum Badań Lotniczych i Kosmicznych
de: Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Arthur Schady
Folie 1
Standardfoliensatz-Englisch >26.04.2006
Mission of DLR
To open up new dimensions for exploring the earth and the universe, for
protecting the environment and for promoting mobility, communication and
security:
Research portfolio ranging from basic research to innovative
applications and the products of tomorrow
Operating large-scale research facilities for DLR’s own projects and
as a service provider for its clients and partners
Promoting the next generation of scientists
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Standardfoliensatz-Englisch > 20.04.2006
European networking
Success in obtaining program
funding from the European
Union
Core formation in Europe for
clearly defined strengthening of
technical expertise and
competitiveness
Expand the ability to determine
the direction taken at European
level
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International networking
Orienting bilateral cooperation
Multilateral cooperation in determining the framework and marketing of
DLR products
Further developing instruments of international cooperation
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Standardfoliensatz-Englisch > 20.04.2006
Aeronautics
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Space
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Transport
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Energy
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Transport
Resolving issues related to
mobility, influencing and coping
with the increase in transport
Energy saving, reducing
pollutants that affect the climate
and are harmful to the health
and lowering noise emissions
Accident prevention, reducing
the risks to people from
accidents
Folie 9
Standardfoliensatz-Englisch > 20.04.2006
Visiting Scientist at DLR in Oberpfaffenhofen
since 1.May 2006
My working fields:
NO2 related Data Analysis
(http://www.pa.op.dlr.de/troccinox/)
Acoustic Modeling
(http://www.pa.op.dlr.de/acoustics/)
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Standardfoliensatz-Englisch > 20.04.2006
NO2 related Data Analysis
(TROCCINOX)
Satellite Data (SCIAMACHY)
Model Data (TM4)
Emission Data (EDGAR, MESSy, GEIA,…)
Deposition Data
Lightning Data (LIS/OTD)
Number of Data sets: 6+2+6+1+9 = 24
Number of different formats: 9
Number of produced images: 724 - 981
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Standardfoliensatz-Englisch > 20.04.2006
NO2 related Data Analysis
Satellite Data (SCIAMACHY)
http://www.iup.physik.uni-bremen.de/sciamachy/
Observation of the Earth:
Vertical Column of NO2 at 10:30 LT
FORMAT: ASCII
Dimensions: IM=440, JM=400,
time=28 and 31 days , cloudy, clear
Unit: molecules / cm²
FORTRAN : preparing data for model
comparison (grid average)
Folie 12
Standardfoliensatz-Englisch > 20.04.2006
NO2 related Data Analysis
Satellite Data (SCIAMACHY)
http://www.iup.physik.uni-bremen.de/sciamachy/
Folie 13
Standardfoliensatz-Englisch > 20.04.2006
NO2 related Data Analysis
Model Data (TM4)
http://www.knmi.nl/~velthove/tm.html
Simulation of LNOx with different
source rates 2Tg and 5Tg
4
FORMAT: netCDF
Dimensions: IM=120, JM=90, KM=30,
time=28 and 30 days
Unit: molecules / cm³
FORTRAN/CDO: vertical integration of 3D field;
calculation of tropospherical NO2
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Standardfoliensatz-Englisch > 20.04.2006
NO2 related Data Analysis
Model Data (TM4)
http://www.knmi.nl/~velthove/tm.html
4
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NO2 related Data Analysis
Emission Data (EDGAR, MESSy, GEIA,…)
http://www.mnp.nl/edgar/ http://www.messy-interface.org/
http://www.geiacenter.org/
Analysis of different sources
FORMATS: ASCII; netCDF; binary
Dimensions: IM=360, JM=180,
time= different years
source categories (7 / 23)
Unit: molecules / cm²/s ….
FORTRAN/CDO: integration of the fields;
time series …
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Standardfoliensatz-Englisch > 20.04.2006
NO2 related Data Analysis
Emission Data (EDGAR, MESSy, GEIA,…)
Folie 17
Standardfoliensatz-Englisch > 20.04.2006
NO2 related Data Analysis
Deposition Data
http://www-eosdis.ornl.gov/cgi-bin/dataset_lister.pl?p=5
Global Maps of Atmospheric
Nitrogen Deposition, 1860, 1993,
and 2050
Dentener, F. J. 2006. Global Maps of Atmospheric Nitrogen
Deposition, 1860, 1993, and 2050. Data set. Available on-line
[http://daac.ornl.gov/] from Oak Ridge National Laboratory
Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A.
Galloway, J. N., F. J. Dentener, D. G. Capone, E. W. Boyer, R. W.
Howarth, S. P. Seitzinger, G. P. Asner, C. Cleveland, P. Green, E.
Holland, D. M. Karl, A. F. Michaels, J. H. Porter, A. Townsend, and C.
Vörösmarty. 2004. Nitrogen Cycles:ast, Present and Future.
Biogeochemistry 70: 153-226.
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Nitrogen Deposition Land Sea 1993
tot1993
land1993
sea1993
NO2 related Data Analysis
Deposition Data
Global Maps of Atmospheric Nitrogen Deposition,
1860, 1993, and 2050
77
62
47
Latitude
32
17
2
-13
-28
-43
-58
-73
0,0E+00
4,0E+09
2,0E+09
8,0E+09
6,0E+09
1,2E+10
1,0E+10
1,6E+10
1,4E+10
N-Depos [mgN/m/a]
1,8E+10
-88
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Standardfoliensatz-Englisch > 20.04.2006
NO2 related Data Analysis
Lightning Data (LIS/OTD)
http://ghrc.msfc.nasa.gov/
http://thunder.nsstc.nasa.gov/
OTD (Optical Transient Detector)
+ LIS (Lightning Imaging Sensor)
FORMAT: HDF
Dimensions: IM=720, JM=360,
time= OTD-only window (5/95-11/97), the
overlap window (12/97-4/00) and the
LISonly window (12/97-present)
Unit: flashes/s or flashes /km²/day
IDL / FORTRAN : calculation for selected,
regions, time
LISOTD_HRFC_v1.0.hdf
LISOTD_HRMC_V2.2.hdf
LISOTD_LRACTS_v0.1.hdf
LISOTD_LRADC_V2.2.hdf
LISOTD_LRDC_v1.0.hdf
LISOTD_LRDC_V2.2.hdf
LISOTD_LRTS_V2.2.hdf
LISOTD_LRMTS_V2.2.hdf
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Standardfoliensatz-Englisch > 20.04.2006
NO2 related Data Analysis
Lightning Data (LIS/OTD)
OTD/LIS
yearly mean [1996-2005] OTD / LIS
Ming time series
yearly flash rate
total time series
60,00
70,0
55,00
50,00
50,0
45,00
40,0
1
2
3
4
5
time
[seasonal]
6
7
8
9
10
11
April 07
April 06
April 05
April 04
April 03
April 02
April 01
April 00
April 99
April 98
30,00
April 97
35,00
April 96
30,0
April 95
40,00
April 94
fl/s
flashes rate s-1
60,0
12
month of the year
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A380/A747 flights on 20 July and 23 August 2006
- noise measurements -
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Standardfoliensatz-Englisch > 20.04.2006
Acoustics: sound waves
Longitudinal Pressure oscillation = wave
oscillation direction is parallel to propagation direction
impulse → pressure oscillation - no flow
source
Wave front
Sound ray
From :www.bayern.de/lfu/laerm/l-ausst/laerm3.htm
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Standardfoliensatz-Englisch > 20.04.2006
Acoustics: Sound waves
physical value
symbol
unit
formula
frequency
f = 1/T
Hz = 1/s
f=c/λ
wavelength
λ
m
λ=c/f
time period or
cycle duration
T = 1/f
s
T=λ/c
wave speed
c
m/s
c=λ×f
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Acoustics: Sound waves
Attenuation
Refraction
sound amplitude decreas
Diffraction
Reflection
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Standardfoliensatz-Englisch > 20.04.2006
Acoustics: Sound propagation in the atmosphere
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Standardfoliensatz-Englisch > 20.04.2006
Acoustics: Sound propagation in the atmosphere
ceff ( z)  c( z)  V ( z) cos( )
temperature
c ( z )  c p / cv  Rd  Tv ( z )
wind
turbulence
humidity
energy
momentum
mass
topography
refraction Tv ( z)  T ( z)  (1  0.608 q( z))
scattering
absorption
sound field
reflexion
diffraction
shadowing effects
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Standardfoliensatz-Englisch > 20.04.2006
Acoustics: Sound propagation model
Aku3D
(Heimann & Blumrich)
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Standardfoliensatz-Englisch > 20.04.2006
Screenshot of my working place
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Standardfoliensatz-Englisch > 20.04.2006