PDF Determining Airborne Particle Properties from Polarimetric ...

[Pages:27]Importance of particles in the atmosphere Single scattering properties

Amsterdam/Grenada Light Scattering Database Forward modeling with SCATMO Summary and future directions

Determining Airborne Particle Properties from Polarimetric Light Scattering Measurements

William Martin, Brian Cairns, Michael Mishchenko

Columbia University

March 9, 2012

William Martin, Brian Cairns, Michael Mishchenko

Determining Airborne Particle Properties from Polarimetric Light Scattering

Importance of particles in the atmosphere Single scattering properties

Amsterdam/Grenada Light Scattering Database Forward modeling with SCATMO Summary and future directions

1 Importance of particles in the atmosphere

2 Single scattering properties Single particle Particle mixtures

3 Amsterdam/Grenada Light Scattering Database

4 Forward modeling with SCATMO Mode-bin framework and semi-linear lookup table Forward model test case Amsterdam/Grenada

5 Summary and future directions

William Martin, Brian Cairns, Michael Mishchenko

Determining Airborne Particle Properties from Polarimetric Light Scattering

Importance of particles in the atmosphere Single scattering properties

Amsterdam/Grenada Light Scattering Database Forward modeling with SCATMO Summary and future directions

Clouds and Aerosols

Clouds, aerosols, and cloud aerosol interactions are important for the radiation budget and climate change.

William Martin, Brian Cairns, Michael Mishchenko

Determining Airborne Particle Properties from Polarimetric Light Scattering

Importance of particles in the atmosphere Single scattering properties

Amsterdam/Grenada Light Scattering Database Forward modeling with SCATMO Summary and future directions

Uncertainty in aerosol radiative effects

2007]

William Martin, Brian Cairns, Michael Mishchenko

[IPCC Determining Airborne Particle Properties from Polarimetric Light Scattering

Importance of particles in the atmosphere Single scattering properties

Amsterdam/Grenada Light Scattering Database Forward modeling with SCATMO Summary and future directions

Bio-mass burning

Figure: California

William Martin, Brian Cairns, Michael Mishchenko

Figure: Oregon

Determining Airborne Particle Properties from Polarimetric Light Scattering

Importance of particles in the atmosphere Single scattering properties

Amsterdam/Grenada Light Scattering Database Forward modeling with SCATMO Summary and future directions

Volcanic eruption

Figure: Iceland

William Martin, Brian Cairns, Michael Mishchenko

Figure: Iceland

Determining Airborne Particle Properties from Polarimetric Light Scattering

Importance of particles in the atmosphere Single scattering properties

Amsterdam/Grenada Light Scattering Database Forward modeling with SCATMO Summary and future directions

Desert dust

Figure: Libya

William Martin, Brian Cairns, Michael Mishchenko

Figure: Namibia

Determining Airborne Particle Properties from Polarimetric Light Scattering

Importance of particles in the atmosphere Single scattering properties

Amsterdam/Grenada Light Scattering Database Forward modeling with SCATMO Summary and future directions

Macroscopic particle

Single particle Particle mixtures

Particle: connected bit of matter with size, shape, and constant refractive index. Represented by state variable , where is the space of all possible particles.

Particle scattering calculated from the macroscopic Maxwell's equations

All scattering info contained in the extinction crossection C ext ( ) and the scattering matrix F ( ; )

William Martin, Brian Cairns, Michael Mishchenko

Determining Airborne Particle Properties from Polarimetric Light Scattering

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download