Australian Report to WGCV#19

Presentation to CEOS WGCV#19

CCRS, Ottawa, Canada

1-3 May 2002

Ian Barton

CSIRO Marine Research

Hobart, Tasmania, Australia

Report to WGCV-19

• Summary of past reports

• Jason-1 cal/val

• Characterisation of Australian land validationsites using an un-manned helicopter

• Final results from Miami2001

• Plans for validation of data products fromENVISAT, AQUA, and ADEOS-II

Past Reports to WGCV-xx• -11 SST Validation at Perth and Townsville

• -12 Land sites, Antarctic,Ocean color,POLDER

• -13 Land Cal sites, SST

• -14 Ocean color, Use of Moon for GMS

• -15 Special report on Western Australia

• -16 Radar altimetry, Vis/NIR

• -17 Altimetry, LST and SST

• -18 Hyperion, Miami2001, MAVT rehearsal

JASON-1 Calibration

• Bass Strait tide gauge used

• 4 deployments of GPS buoys for absolutebias measurement, 9/01, 2/03, 3/03, 4/03

• Next deployments 28 April 2002 - andanother 2 in coming months

• Data also used for Jason - Topex/Poseidoncomparisons

• Work begun at ATNF to compare Jasondata with Australian and Pacific tide gauges

Expected outputs

• During the 6 month verification phase, bias driftmeasurements will be made. The rms errorsassociated with the various components of thebias drift estimates are:

• Acoustic tide gauge accuracy 1 mm

• Pressure gauge accuracy 5 mm

• Steric height accuracy 4 mm

• Pressure difference from alongshore currents 4 mm

• Onshore wind set up 1 mm

• Wave set up 2 mm

• TOTAL (above errors are independent) 8 mm

Land Site Characterisation

• Joint program with Chiba University• Un-manned helicopter used for surveys• Visible spectrometer and thermal

radiometer• Thanks to Chiba University for following

Powerpoint presentation

Hay

AliceSprings

Thangoo

Townsville

Perth

Hobart

SST Validation sites

LST Validation sites

Cairns

Bass StraitAltimeter Valid. site

Helicopter studies

Second Infrared RadiometerCalibration and Inter-comparison

• RSMAS, University of Miami

• 28 May - 2 June, 2001

• 15 participants

• 7 different radiometers

• 4 black body targets

• Inter-comparison at sea over 2 days

SISTeR

JPL on bow

ISARCIRIMS M-AERI

TASCO

DAR011

Temperature difference from M-AERI

* ISAR x SISTeR + DAR011 JPL

Table 3. Means and standard deviations of the estimated skin SST differences betweenpairs of radiometers for the entire cruise period, and for each half of the cruise.

Time 150.50 to 152.00 150.50 to 151.25 151.25 to 152.00Radiometer

PairMean(K)

Std.Dev(K)

N Mean(K)

Std.Dev(K)

N Mean(K)

Std.Dev(K)

N

MAE-ISA 0.002 0.135 80 0.005 0.135 69 –0.015 0.135 11MAE-SIS 0.046 0.066 144 0.046 0.066 74 0.045 0.068 70MAE-JPL 0.007 0.114 148 0.052 0.111 77 -0.042 0.096 71MAE-DAR -0.008 0.076 149 0.022 0.071 78 -0.041 0.067 71

ISA-SIS 0.038 0.101 79 0.030 0.101 67 0.085 0.093 12ISA-JPL 0.026 0.142 81 0.027 0.141 70 0.018 0.150 11ISA-DAR 0.007 0.114 80 0.019 0.112 69 -0.064 0.107 11SIS-JPL -0.048 0.099 144 -0.009 0.103 74 -0.088 0.078 70SIS-DAR -0.053 0.074 144 -0.019 0.054 74 -0.088 0.076 70JPL-DAR -0.014 0.103 148 -0.028 0.102 77 0.000 0.102 71

Validation plans for new satelliteinstruments - AATSR/MODIS/GLI

• Marine - SST and Ocean colour

• Land - LST, NDVI, BRDF

Sea Surface Temperature• Three components -

• Townsville - CSIRO-AIMSRadiometer on Pure Pleasure ferry

• Perth - CSIRORadiometer on Rottnest Is. ferry

• Hobart - CSIRO.-.Tas. Uni./AntDiv.-AIMSRadiometers on RV Southern Surveyor,RV Lady Basten, & RSV Aurora Australis

RV Lady Basten27.4 m227 tonnes

2 cruises planned forAATSR & MERISproduct validation -24/5 - 2/6 Coral Sea5/6 - 14/6 Great Barrier Reef.

Ocean colour - MERIS

• Ocean colourinstruments/sampling onsecond Lady Basten cruise -5-14 June

• Deployment of CASI in theFitzroy/Port Curtis and HeronIsland region 1-14 June

Land surface studies

Use of field sites for -• Satellite remote sensing• Surface radiation budget• Land surface temperature• Albedo (BRDF studies)• Integration of data into climate and

other models

Scanning Radiometer for LST measurements

A m burla F ield Site, N orthern T erritory