Christoph Rüdiger, Jeffrey WalkerDept of Civil Engineering, Monash University, Australia

Yann Kerr, Arnaud Mialon, Olivier MerlinCentre d’Etudes Spatiales de la Biosphère (CESBIO), France

Ed KimNASA Goddard Space Flight Center, USA

Validation of SMOS L1c and L2 Products with Airborne and In-situ

Observations across Australia

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

Environmental conditions in Australia

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

General Motivation

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

MoistureMap – Data Assimilation

Data Assimilation

Pro

ject

1S

MO

S C

alib

rati

on a

nd V

erif

icat

ion

SM

OS

Sim

ula

tor

1km LanduseLandcover Data

Project 4Multi-angle Retrieval

Rainfall and ET Data

BoM

Rea

l-ti

me

Obs

ervi

ng

Net

wor

k

BoM

7-da

y N

WP

For

ecas

t

BoM

Sea

sona

l Cli

mat

e F

orec

ast

50km

SM

OS

Dat

a

1km

MO

DIS

Dat

a

Project 5Soil Property Estimator

Project 2Mixed-pixel Retrieval

Project 3Multi-sensor Retrieval

Project 4Multi-angle Retrieval

MoistureMapA soil moisture monitoring, prediction and reporting system for land management

1km

Soi

l Moi

stu

re P

red

icti

on M

odel

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

MoistureMap – An Overview

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

Arid Zone

Murrumbidgee

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

Airborne Cal/Val Experiments in Australia

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

Flight track coverage

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

An airborne SMOS/Aquarius/SMAP simulator

6 x Skye VIS/NIR/SWIR Spectrometers

6 x Everest Thermal IR’s

L-band RadiometerL-band Radar

MO

DIS

SM

OS

SMAP/Aquarius

PLIS

TIR + Spectral

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

AACES field campaigns: validation data

Vegetation water content biomass type LAI spectral

HDAS soil moisture vegetation type vegetation height rock fraction dew amount

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

www.moisturemap.monash.edu.au/AACES

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

AACES Summer 2010

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

L-MEB Predictions h-polv-pol

9.1 (3.4) K7.7 (2.5) K5.9 (0.9) K4.8 (0.5) K

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

Level 1c AnalysisPolarization v-pol h-pol

Incidence angle 22° 38° 22° 38°

Bias [K] 8.2 9.0 11.3 11.7

RMSE [K] 10.8 10.7 12.6 13.6

(bias corrected) RMSE [K] 7.1 5.9 5.5 7.0

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

Spatial Coverage Requirements

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

Level 2 AnalysisSeason All Summer Winter

Bias [vol-%] -7.6 -5.0 -14.9

RMSE [vol-%] 11.8 10.1 15.7

(bias corrected) RMSE [vol-%] 9.1 8.8 9.1

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

Future Work

- Bias correction- PLMR SM retrieval- Complete subpixel variability analysis- Work on L-MEB parameterization (use of high-resolution data)

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

Thanks

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

The Murrumbidgee Catchment

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

A ground based soil moisture observatory

Aquarius

SMOSSMAP

Smith et al. (In Review) WRR

Satellite footprint sizes

Canberra

Balranald

IGARSS’11 – Rüdiger et al. – Session M03.T03 – 25 July 2011

MoistureMapDelivery

- High-resolution soil moisture information- Satellite/Model validation- VIS/NIR/TIR/MW observations

Model/DA Requirements- Land Surface Model- NWP/observed forcing data- NWP ensembles- Land surface parameterisation