Mission of DLR

Folie 1Standardfoliensatz-Englisch >26.04.2006

My Work at the

German Aerospace Centerpl: Niemieckie Centrum Badań Lotniczych i Kosmicznychde: Deutsches Zentrum für Luft- und Raumfahrt (DLR)

Arthur Schady

Standardfoliensatz-Englisch > 20.04.2006

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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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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


Aeronautics


Space


Transport


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


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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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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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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)


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NO2 related Data Analysis Satellite Data (SCIAMACHY)http://www.iup.physik.uni-bremen.de/sciamachy/


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NO2 related Data Analysis Model Data (TM4) http://www.knmi.nl/~velthove/tm.html

Simulation of LNOx with different

source rates 2Tg and 5Tg

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

4


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NO2 related Data Analysis Model Data (TM4) http://www.knmi.nl/~velthove/tm.html 4


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NO2 related Data AnalysisEmission 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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NO2 related Data AnalysisEmission Data (EDGAR, MESSy, GEIA,…)


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NO2 related Data Analysis Deposition Datahttp://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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NO2 related Data Analysis Deposition DataGlobal Maps of Atmospheric Nitrogen Deposition, 1860, 1993, and 2050

Nit

rog

en

De

po

sit

ion

La

nd

Se

a 1

99

3

0,0

E+

00

2,0

E+

09

4,0

E+

09

6,0

E+

09

8,0

E+

09

1,0

E+

10

1,2

E+

10

1,4

E+

10

1,6

E+

10

1,8

E+

10

-88

-73

-58

-43

-28

-13

2

17

32

47

62

77

La

titu

de

N-Depos [mgN/m/a]

tot1

99

3

land

19

93

se

a1

99

3


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NO2 related Data Analysis Lightning Data (LIS/OTD)http://ghrc.msfc.nasa.gov/

http://thunder.nsstc.nasa.gov/

LISOTD_HRFC_v1.0.hdfLISOTD_HRMC_V2.2.hdfLISOTD_LRACTS_v0.1.hdfLISOTD_LRADC_V2.2.hdfLISOTD_LRDC_v1.0.hdfLISOTD_LRDC_V2.2.hdfLISOTD_LRTS_V2.2.hdfLISOTD_LRMTS_V2.2.hdf

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


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NO2 related Data Analysis Lightning Data (LIS/OTD)

OTD/LIS

30,0

40,0

50,0

60,0

70,0

Apr

il 94

Apr

il 95

Apr

il 96

Apr

il 97

Apr

il 98

Apr

il 99

Apr

il 00

Apr

il 01

Apr

il 02

Apr

il 03

Apr

il 04

Apr

il 05

Apr

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Apr

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time [seasonal]

fl/s

Ming time series yearly flash rate total time seriesyearly mean [1996-2005] OTD / LIS

30,00

35,00

40,00

45,00

50,00

55,00

60,00

1 2 3 4 5 6 7 8 9 10 11 12

month of the year

fla

sh

es

ra

te s

-1


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A380/A747 flights on 20 July and 23 August 2006- noise measurements -


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source

Wave frontWave lenght

Sound ray

Pressure amplitude

Longitudinal Pressure oscillation = waveoscillation direction is parallel to propagation direction

From :www.bayern.de/lfu/laerm/l-ausst/laerm3.htm

impulse → pressure oscillation - no flow

Acoustics: sound waves


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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

Diffraction

Attenuation sound amplitude decreas

Reflection

Refraction


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Acoustics: Sound propagation in the atmosphere


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temperature

wind

turbulence

topography

sound field

refraction

absorption

reflexion diffractionshadowing effects

energymomentum

mass

scatteringhumidity

)cos()()()( zVzczceff

)( /)( zTRcczc vdvp

))(608.01()()( zqzTzTv

Acoustics: Sound propagation in the atmosphere


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Acoustics: Sound propagation model

Aku3D(Heimann & Blumrich)


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Screenshot of my working place

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Mission of DLR

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