Particle Scattering Properties Research Group Meeting 01 May 2017 Scott Sieron Advisors Fuqing Zhang Eugene Clothiaux Major Collaborator Lu Yinghui NonSpherical Particles About NonSpherical Particles ID: 653417
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Slide1
Modified CRTM: Exploring Different Particle Scattering Properties
Research Group Meeting
01
May 2017
Scott Sieron
Advisors:
Fuqing
Zhang, Eugene
Clothiaux
Major Collaborator: Lu
YinghuiSlide2
Non-Spherical ParticlesSlide3
About Non-Spherical Particles
Database from
Guosheng Liu (2008 MWR)Optical properties simulated by Discrete Dipole Approximation (DDA; Draine and Flatau 1994)Slide4
About Non-Spherical ParticlesDatabase from
Guosheng Liu (2008 MWR)Optical properties simulated by Discrete Dipole Approximation (DDA; Draine and Flatau 1994)Slide5
About Non-Spherical ParticlesDatabase from
Guosheng Liu (2008 MWR)Optical properties simulated by Discrete Dipole Approximation (DDA; Draine and Flatau 1994)Slide6
About Non-Spherical ParticlesThese particles do not match size and mass of microphysics specifications
Lookup tables are consistent with particle mass distribution:Concern: non-spherical particle database spans a smaller range of masses than the spherical particle database
Slide7
37.0 GHz
91.66 GHz
SSMIS
Obs
Sphere
Long Column
Short Column
CRTM-DS
WSM6
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)Slide8
37.0 GHz
91.66 GHz
SSMIS
Obs
Sphere
Block Column
Thick Plate
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS
WSM6Slide9
37.0 GHz
91.66 GHz
SSMIS
Obs
Sphere
Thin Plate
3-Bullet Rosette
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS
WSM6Slide10
37.0 GHz
91.66 GHz
SSMIS
Obs
Sphere
4-Bullet Rosette
5
-Bullet Rosette
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS
WSM6Slide11
37.0 GHz
91.66 GHz
SSMIS
Obs
Sphere
6-Bullet Rosette
Sector Snowflake
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS
WSM6Slide12
Obs
WSM6
19.35 GHz
37.0 GHz
91.66 GHz
183.31±7 GHz
CRTM-DS Spheres
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)Slide13
Obs
WSM6
19.35 GHz
37.0 GHz
91.66 GHz
183.31±7 GHz
CRTM-DS Sector Snowflake
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)Slide14
Obs
WSM6
19.35 GHz
37.0 GHz
91.66 GHz
183.31±7 GHz
CRTM-DS 6-Bullet Rosette
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)Slide15
Obs
WSM6
19.35 GHz
37.0 GHz
91.66 GHz
183.31±7 GHz
CRTM-DS Thin Column
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)Slide16
Obs
God-
dard
19.35 GHz
37.0 GHz
91.66 GHz
183.31±7 GHz
CRTM-DS Spheres
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)Slide17
Obs
God-
dard
19.35 GHz
37.0 GHz
91.66 GHz
183.31±7 GHz
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS Sector SnowflakeSlide18
Obs
God-
dard
19.35 GHz
37.0 GHz
91.66 GHz
183.31±7 GHz
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS 6-Bullet RosetteSlide19
Obs
God-
dard
19.35 GHz
37.0 GHz
91.66 GHz
183.31±7 GHz
CRTM-DS Thin Column
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)Slide20
Obs
Mor-rison
19.35 GHz
37.0 GHz
91.66 GHz
183.31±7 GHz
CRTM-DS Spheres
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)Slide21
Obs
Mor-rison
19.35 GHz
37.0 GHz
91.66 GHz
183.31±7 GHz
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS Sector SnowflakeSlide22
Obs
Mor-rison
19.35 GHz
37.0 GHz
91.66 GHz
183.31±7 GHz
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS 6-Bullet RosetteSlide23
Obs
Mor-rison
19.35 GHz
37.0 GHz
91.66 GHz
183.31±7 GHz
CRTM-DS Thin Column
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)Slide24
Spherical Particle Bulk DensityLookup tables are consistent with particle mass distributionSlide25
37.0 GHz
91.66 GHz
SSMIS
Obs
Consistent
200 Graupel
25 Snow
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS
WSM6Slide26
37.0 GHz
91.66 GHz
SSMIS
Obs
Consistent
300 Graupel
50 Snow
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS
WSM6Slide27
37.0 GHz
91.66 GHz
SSMIS
Obs
Consistent
600 Graupel
20
0 Snow
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS
WSM6Slide28
37.0 GHz
91.66 GHz
SSMIS
Obs
Consistent
800 Graupel
4
0
0 Snow
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS
WSM6Slide29
About Particle Bulk Density
It is a component of the slope parameter, λ, of the particle size distributionCan allow the particle size distribution to change in response to a different bulk densitySlide30
37.0 GHz
91.66 GHz
SSMIS
Obs
Consistent
400 New PMD
4
0
0 Same PMD
80
100
120
140
160
180
200
220
240
260
280
300
Brightness Temperature (K)
CRTM-DS
WSM6