Remote-sensing of the environment (RSE) ATMOS Design of a radar control and signal processor unit...
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Remote-sensing of the environment (RSE)
AATTMMOOSS
Design of a radar control and signal processor unit for the TARA radar
BAP afstudeerprojectYann Dufournet
First meeting
AATTMMOOSS
DelftUniversity ofTechnology
2Remote-sensing of the environment (RSE)
Presentation of the Project team
• Enzo den Engelsen
• Ester Stienstra
• Jeroen Hendrikus Franciscus van Gemert
• Martijn Janssen
• Satoshi Malotaux
• Vinay Suraj Niddha
• Yann Dufournet
• Tobias Otto
• Christine Unal
• Simone Placidi
• Fred van der Zwan
Students Supervisors
AATTMMOOSS
DelftUniversity ofTechnology
3Remote-sensing of the environment (RSE)
The ATMOS-RSE group (TU Delft)
•People: Herman Russchenberg• Permanent staff: Christine Unal, Yann Dufournet• Post-Doc: Tobias Otto• PhD’s: Christine Brandau, Simone Placidi + Master
students• Technicians : Fred van der Zwan and Paul Hakkaart
•Topic: Atmospheric Remote-sensing
•Website : atmos.irctr.tudelft.nl•Blog: atmos.weblog.tudelft.nl
radar
- Radar technical development
- Signal processing
- atmospheric applications
AATTMMOOSS
DelftUniversity ofTechnology
4Remote-sensing of the environment (RSE)
Area of research
Water clouds
Precipitation
Ice / mixed-phase clouds
Cloud dynamic
Cloud system
Ground-based observations
Satellite observations
StudiesMicrophysics of particles
present in the cloud system
+Motion of the
particles - dynamic
Christine B.
Simone
Yann
Tobias
Christine U.
Christine U.
Simone
AATTMMOOSS
DelftUniversity ofTechnology
5Remote-sensing of the environment (RSE)
Cloud description
Cloud compositi
on
Water droplets
Pristine ice
crystals
aggregates
Graupel / hail
100 μmTiny particles
AATTMMOOSS
DelftUniversity ofTechnology
6Remote-sensing of the environment (RSE)
Cloud effects on weather
Heavy rainfall
flooding
Storms - lightening
AATTMMOOSS
DelftUniversity ofTechnology
7Remote-sensing of the environment (RSE)
Cloud effects on Climate
Impacts on solar and Earth radiations
Cloud coverage ~ 70 %
Impacts not assessed yet!
Need observations
AATTMMOOSS
DelftUniversity ofTechnology
8Remote-sensing of the environment (RSE)
Cloud observation
Shape / habit : ( )w D D
Density :l
e kD
Relative permittivity :1 2
1eff
air
cF
cF
2ice air
ice air
F
particleice
ice
c
Terminal fall velocity :2
2
2b
ta
a mD gv
D A
Dw
Oblate particles
orientation
phase
particle size distribution
Macrophysical properties: cloud height, thickness
+ cloud system dynamic
AATTMMOOSS
DelftUniversity ofTechnology
9Remote-sensing of the environment (RSE)
Challenge of atmospheric observation
12 k
m
Den Haag
Difficult to currently get proper
microphysical information
size
+ moving targets!
AATTMMOOSS
DelftUniversity ofTechnology
10Remote-sensing of the environment (RSE)
CESAR observatory – Cabauw location
AATTMMOOSS
DelftUniversity ofTechnology
11Remote-sensing of the environment (RSE)
CESAR observatory – Cabauw site
Ground-based remote-sensing
IDRA
Overview from the tower (2002)
Radiation sensors
Weather sensors
Wind profiler
radars
lidar
radiometers
213 m tower TARA
Satellites
AATTMMOOSS
DelftUniversity ofTechnology
12Remote-sensing of the environment (RSE)
The advanced atmospheric IRCTR radars
12 m
TARA (S Band) IDRA (X Band)
Profiling radar
radar
radar
scanning radar
transmitterreceiver
time
hei
gh
t
X
Y
Y X
AATTMMOOSS
DelftUniversity ofTechnology
13Remote-sensing of the environment (RSE)
Specificity of IRCTR radars
Radar resolution
volume
Horizontal polarization Vertical polarization
Improvement of atmospheric particles observations !!
FF + fd
Ability to measure axis ratio using dual
polarizations
Ability to measure fall velocity using Doppler
effect
Cloud particle
AATTMMOOSS
DelftUniversity ofTechnology
14Remote-sensing of the environment (RSE)
CloudyprecipitationClear sky
Rad
ar p
roce
ssin
g
BAP project: main goal
TARA
Time
Time
Reflectivity [dBZ]
Mean radial velocity [m.s-1]
Current time
AATTMMOOSS
DelftUniversity ofTechnology
15Remote-sensing of the environment (RSE)
Main goal of the project
Control radar
Processing dataAcquiring data
Data visualisation and storage
Radar control unit for real time processing
Large amount of information
AATTMMOOSS
DelftUniversity ofTechnology
16Remote-sensing of the environment (RSE)
Main needs
Radar control unit for real time processing
-International scientific community
- improving cloud resolving model algorithms
- standard radar data dissemination during measurement campaign
- cities (e.g. Rotterdam)
- climate: standard radar data dissemination during monitoring period in Cabauw
Applications• Easy new processing implementation within different radars
• international use (data format + transfer)
• clear interface and visualization
• real time (for campaign and monitoring)
AATTMMOOSS
DelftUniversity ofTechnology
17Remote-sensing of the environment (RSE)
Tools and facilities available
Control radar
Processing dataAcquiring data
Data vizualisation and storage
Radar control unit for real time processing
Supervising team
Fred van der Zwan
Tobias Otto
Simone Placidi
Tobias OttoChristine Unal
Yann Dufournet
ATMOS room computers + processing software
Visit CESAR supersite (CABAUW)
Tests on the TARA radars
AATTMMOOSS
DelftUniversity ofTechnology
18Remote-sensing of the environment (RSE)
Expectation and Future tasks
•Expectations: Self-initiative, team work, intense communication between students and supervisors.
•Writing business plan•Next meeting: end of March
• Technical introduction of the project + sub-group formation•Start of the project: April 18th•Mid-term symposium: compulsory for students!•24 June: ‘Grande Finale’