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VRAME (Verticaly Resolved Aerosol Model for Europe

from a Synergy of EARLINET and AERONET data)

Introduction

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VRAME Goals

•Improvements in atmospheric correction for VIS-NIR imagers• Support for atmospheric monitoring• Support for climate research

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VRAME as a Leading Edge Technology

Small and Medium-sized Enterprises Project

• Development and demonstration of atmospheric modeling expertise

• Fostering innovation through cooperation– SME (Brockmann Consult) and – research organization (Leibniz Institute for Tropospheric

Research)

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VRAME as a Leading Edge Technology

Small and Medium-sized Enterprises Project

• Support to ESA in advancing exploitation of current & future EO missions

– MERIS-ENVISAT implementation– Sentinels– Earth Explorers

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VRAME as a Leading Edge Technology

Small and Medium-sized Enterprises Project

• Feasibility studies and software adaptation– atmospheric correction– atmospheric monitoring• Validation through sensitivity studies and testing

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VRAME novel elements

• Vertically and spectrally resolved aerosol optical & microphysical

properties• Aerosol modeling from systematic

ground observations• Combination of lidar and sun-

photometer measurements

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VRAME novel elements

• Examination of absorbing aerosols, including non-spherical dust types

• Potential for aerosol profile identification at the TOA

• Recommendations for aerosol remote sensing

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Non-Maritime Aerosols

Large, optically thick plume ofaerosols blown eastward over the North Atlantic Ocean. The aerosol plume is the regional haze produced bythe industrialized northeastern United States.Image from TERRA MODIS on May 4, 2001

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Eyjafjallajoekull volcano eruption20 April 2010

oceanic chlorophyll-a concentration

AOT(865nm)

Non-Maritime Aerosols

BROCKMANN CONSULTSNOW RADIANCE

Portugal fires 21 August 2005

Saharan dust 21 August 2005

oceanic chlorophyll-a concentration

oceanic chlorophyll-a concentration

aerosol optical thickness (865nm)

VRAME aerosols

imaged by MERIS

aerosol optical thickness (865nm)

BROCKMANN CONSULTSNOW RADIANCEDust and pollution 31 August 2003

Fires in Greece22 August 2009

oceanic chlorophyll-a concentration

oceanic chlorophyll-a concentration

AOT(865nm)

aerosol optical thickness (865nm)

VRAME aerosols imaged by MERIS

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Column aerosol properties

extrapolation of lidar vertical profiles down to the ground and to other wavelengths

3β355,532,1064nm + 2α355,532nm + δ532nm (super sites)3β + 1α + δ (high performance sites)

1β (basic sites)

Vertically resolved aerosols

Non-maritime aerosol database1. Representative 1-2

examples for each aerosol type

2. MERIS wavelengths3. Aerosol microphysical and

optical properties:• extinction coefficient• single scattering

albedo• phase function• asymmetry parameter

4. Radiative transfer results

1. Aerosol layer determination2. Aerosol source, type and age3. Mean microphysical and optical

properties per layer

Marine aerosolMineral dustPolluted/mixed dustPolluted continental /

anthropogenic pollution / urban aerosol

Continental background / clean continental / rural aerosol

Biomass burning / smoke aerosol

Volcanic aerosol

Aerosol LUTs for MERIS

MERIS wavelengthsand

geometries

RT

Sensitivity studies

Benefits at TOA radiances

1. Retrieving aerosol types?2. Separating all new types?3. Using the vertical structure?

Differentiation at the TOA

maritime and non-maritime models

MEGS

1. Implementation2. Validation in coastal waters

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Work Packages

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Work Packages

VRAMEO. Krüger

WP0Project MgtO. Krüger

WP1Req. Eng.I. Mattis

WP2Aeros. DBI. Mattis

WP3LUT generation

O. Krüger

WP4 Sensitivity Study

I. Mattis

WP5Aero dist Alg

O. Krüger

WP7ValidationO. Krüger

WP6MEGS ImplM. Zühlke

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VRAME Current Status WBS Task Name

0 Project Management0.1 KO and PMP

1 Req. Engineering1.1 RB ready

2 Aerosol DB0.2 PM1

2.2 DB draft ready

0.3 Midterm Review

2.3 AerDB ready

3 LUT generation3.1 LUT ready

4 Sens. study4.1 Technical Notes ready

0.4 PM2

5 Aeros. dist. alg.5.1 AerDist ATBD

6 MEGS impl6.1 upgraded megs

7 Validaton7.1 Draft Validation Report

0.5 Final Meeting

04.01 KO and PMP

RB ready 26.02

PM1 15.04

DB draft ready 01.06

Midterm Review 15.09

AerDB ready 05.11

LUT ready 31.12

Technical Notes ready 28.01

PM2 07.02

AerDist ATBD 10.09

upgraded megs 31.12

16.05

Final Meeting 15.06

DecemberJanuary FebruaryMarch April May June July August SeptemberOctoberNovemberDecemberJanuary FebruaryMarch April May June July August

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