Presentation is loading. Please wait.

Presentation is loading. Please wait.

Laura Lund University of Arizona Dr. William Conant

Published byWashington Pinho Capistrano Modified over 6 years ago

Similar presentations

Presentation on theme: "Laura Lund University of Arizona Dr. William Conant"— Presentation transcript:

1 Laura Lund University of Arizona Dr. William Conant
Atmospheric Aerosols Laura Lund University of Arizona Dr. William Conant

2 Aerosols Bi-products of chemical reactions
Nano- to micro-meters in size Influence the Atmosphere Affect air quality Scatter light Cloud condensation nuclei Difficult to sample

3 Climate Effects Increased light scattering due to pollution aerosols may cool atmosphere Cooling effect regional versus greenhouse effect everywhere Cannot currently model outcome of warming and cooling in different regions Effective sampling system needed to further studies

4 Sampling System Electrostatic Classifier
Differential Mobility Analyzer Ultra-fine Condensation Particle Counter National Instruments Labview Data Acquisition

5 Electrostatic Classifier
Kr-85 Aerosol Neutralizer Differential Mobility Analyzer Charged aerosols attracted to collector rod based on voltage applied and aerosol size Monodisperse aerosol exits center of DMA Remaining aerosols exit through excess air Monodispese aerosol fed to CPC to be counted

6 Particle Counter Aerosol stream passed through supersaturated n-butyl alcohol Alcohol condenses on particles Stream enters optical detector Lenses collect laser light scattered by droplets to count particles Concentration data recorded by Labview Size distribution determined and analyzed

7 Preliminary Results Note: 10V=15.4 nm V=160 nm

8 Implications Facilitate data collection of atmospheric aerosols
Evaluate models of mid-tropospheric aerosols used in NASA’s CALIPSO mission Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation Atmospheric tracers to study movement of Earth’s atmosphere

9 Thank you Any Questions?

Download ppt "Laura Lund University of Arizona Dr. William Conant"

Similar presentations

A a p e k s h a K a d u D A V P U B L I C S C H O O L N E W P A N V E L.

A a p e k s h a K a d u D A V P U B L I C S C H O O L N E W P A N V E L.
1. Aerosol Instrumentation – In Situ Measurement of Particle Size and Number Example of size distribution (Number size distribution with three log- normal.

1. Aerosol Instrumentation – In Situ Measurement of Particle Size and Number Example of size distribution (Number size distribution with three log- normal.
Aerosol Optical Properties via Cavity Ring-Down Technology Virtual Impactor for Sub-micron Aerosol Particles A. A. Boľshakov, A. W. Strawa, A. G. Hallar.

Aerosol Optical Properties via Cavity Ring-Down Technology Virtual Impactor for Sub-micron Aerosol Particles A. A. Boľshakov, A. W. Strawa, A. G. Hallar.
Chapter 17 Air resources The atmosphere layer is very thin compared to the size of the Earth.

Chapter 17 Air resources The atmosphere layer is very thin compared to the size of the Earth.
Lecture 12 Content LIDAR 4/15/2017 GEM 3366.

Lecture 12 Content LIDAR 4/15/2017 GEM 3366.
Earth System Science Teachers of the Deaf Workshop, August 2004 S.O.A.R. High Earth Observing Satellites.

Earth System Science Teachers of the Deaf Workshop, August 2004 S.O.A.R. High Earth Observing Satellites.
A Dictionary of Aerosol Remote Sensing Terms Richard Kleidman SSAI/NASA Goddard Lorraine Remer UMBC / JCET Short.

A Dictionary of Aerosol Remote Sensing Terms Richard Kleidman SSAI/NASA Goddard Lorraine Remer UMBC / JCET Short.
16-1 Energy in Earth’s Atmosphere. (pages 542–545) 1

16-1 Energy in Earth’s Atmosphere. (pages 542–545) 1
Nanosafety assessment methodology Kaarle Hämeri Professor in Aerosol physics University of Helsinki Finnish Institute for Occupational Health.

Nanosafety assessment methodology Kaarle Hämeri Professor in Aerosol physics University of Helsinki Finnish Institute for Occupational Health.
Construction and Characterisation of a Particle Magnifier

Construction and Characterisation of a Particle Magnifier
Weather World Geography Notes 1.5. Atmosphere Atmosphere is a thin layer of gases This protects the surface from Temperature extremes (acts as insulation)

Weather World Geography Notes 1.5. Atmosphere Atmosphere is a thin layer of gases This protects the surface from Temperature extremes (acts as insulation)
ACTIVE CONTROL OF A GAS FLOW RATE IN AN ALTERNATING GRADIENT DIFFUSION CHAMBER USING LABVIEW by Max Trueblood & David LeBlanc ME240 Semester Project MS&T,

ACTIVE CONTROL OF A GAS FLOW RATE IN AN ALTERNATING GRADIENT DIFFUSION CHAMBER USING LABVIEW by Max Trueblood & David LeBlanc ME240 Semester Project MS&T,
Section 3 Remote sensing of global change Air pollution Global Change Instructor: Dr. Cheng-Chien LiuCheng-Chien Liu Department of Earth Sciences National.

Section 3 Remote sensing of global change Air pollution Global Change Instructor: Dr. Cheng-Chien LiuCheng-Chien Liu Department of Earth Sciences National.
The Contribution of Marine Organic Emissions to Coastal Air Quality Brett Gantt Advisor: Nicholas Meskhidze Co-Author: Annmarie Carlton (EPA) North Carolina.

The Contribution of Marine Organic Emissions to Coastal Air Quality Brett Gantt Advisor: Nicholas Meskhidze Co-Author: Annmarie Carlton (EPA) North Carolina.
Aerosols and climate Rob Wood, Atmospheric Sciences.

Aerosols and climate Rob Wood, Atmospheric Sciences.
What is the Saharan Air Layer? The Saharan Air Layer (SAL) is a layer of warm, dry, dusty air which normally overlays the cooler more humid surface air.

What is the Saharan Air Layer? The Saharan Air Layer (SAL) is a layer of warm, dry, dusty air which normally overlays the cooler more humid surface air.
Particles in the Atmosphere CONTENTS 1. Introduction 2. Physical properties 3. Particle formation and growth 4. Chemical composition 5. Radiative properties.

Particles in the Atmosphere CONTENTS 1. Introduction 2. Physical properties 3. Particle formation and growth 4. Chemical composition 5. Radiative properties.
Atmosphere Sciences Instrumentation Lab Organized by David Delene - November 20, 2008 Overview of Instruments – 3:00 Clifford Hall 470 Lab Demonstrations.

Atmosphere Sciences Instrumentation Lab Organized by David Delene - November 20, 2008 Overview of Instruments – 3:00 Clifford Hall 470 Lab Demonstrations.
Radiation’s Role in Anthropogenic Climate Change AOS 340.

Radiation’s Role in Anthropogenic Climate Change AOS 340.
1 Motivation Particles are generally regarded as one of the most serious indoor air quality concerns Increasing concern about ultrafine particles Very.

1 Motivation Particles are generally regarded as one of the most serious indoor air quality concerns Increasing concern about ultrafine particles Very.

Similar presentations

Ads by Google