# Presentation: 725230

## Brent Holben, 1 Tom Eck,1,2 Alexander Smirnov2, Oleg Dubovik2
1NASA Goddard Space Flight Center, Directorate of Earth Sciences
2Goddard Earth  Sciences and Technological Center (GESTC)University of Maryland Baltimore County (UMBC)

Outline
Overview of the AERONET program 
AERONET Products and analysis
Proposed AERONET sites
Requested In-country support
Summary of Proposed AERONET Measurements for UAE

**1****NASA Goddard Space Flight Center, Directorate of Earth Sciences**
**2****Goddard Earth  Sciences and Technological Center (GESTC)****University of Maryland Baltimore County (UMBC)**
***Outline***
**Overview of the AERONET program**
**AERONET Products and analysis**
**Proposed AERONET sites**
**Requested In-country support**
**Summary of Proposed AERONET Measurements for UAE**

**More information —>**

**http://aeronet.gsfc.nasa.gov**

***AERONET-Proposed ground-based RS Aerosol Measurements for UAE***

## AERONET: A Federation of International Collaborators

**Research & Operations**
**Program of long term measurements for aerosol research and environmental assessment**
**Homepage access http://aeronet.gsfc.nasa.gov/**
**Project Objectives**
**Validation of Satellite Aerosol Retrievals **
**Characterization of aerosol optical properties**
**Synergism with Satellite obs., Climate Models**
**Provide mesoscale observations during regional field campaigns**

## Characteristics of AERONET sun and sky scanning Radiometer

**Holben et al. RSE, 1998**
**Holben et al. JGR, 2001**
**Eck et al. JGR, 1999**
**Smirnov et al. JGR, 2000**
**Dubovik & King JGR, 2000**
**Dubovik et al. JGR 2000**

**Flux measurements**
**Direct - l=340, 380, 440, 500, 670, 870, 940, 1020 nm**
**Diffuse - l=440, 670, 870, 1020 nm (alm, pp, pol)**

**Calibration and processing information**

**Aerosol optical depth and **
**precipitable water computations**

**Cloud screening and quality control**

**Inversion products**

**Volume size distribution (0.05<R<15 mm),**
**refractive index, single scattering albedo**
**(l=440, 670, 870, 1020 nm)**

## AERONET Products

**Aerosol Optical Depth (15 min)**

**Precipitable Water (15 min)**

**AOD Climatology**

**Size Distributions**

**Single Scattering Albedo**

## AERONET global comparison: Properties from four Generic types

## Proposed AERONET Distribution

**Current Sites**
**Proposed sites**
**MAARCO site**

## AERONET requested Support

**Authorization for new sites**
**Logistical support to establish sites**
**Technical and logistical assistance to maintain sites **
**All AERONET data and products will be available in near real-time through the internet**
**http://aeronet.gsfc.nasa.gov**

## AERONET Measurement Objectives for UAE

**Measure accurately and continuously the column integrated mesoscale aerosol optical properties **
**Measure, for the first time, UV through Infrared sky radiance for retrievals of particle size distribution, single scattering albedo and complex index of refraction**
**Measure for the first time ocean leaving radiance for dust aerosol with the SeaPRISM. **
**Intercompare CAR/AERONET/AATS retrievals of aerosol properties to simultaneous retrievals of in situ microphysics measurements from MAARCO and Aerocommander platforms**
**Validation and comparison:**
**MPL (vertical distribution of aerosol)**
**SeaPRISM (water leaving radiance)**
**MODIS/TOMS/SeaWiFS**