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Second NAFE Workshop
NAFE’06: A Proposed Campaign Strategy
J Walker, O Merlin and R Panciera
Dept Civil and Env Engg
The University of Melbourne, Australia
Second NAFE Workshop
Objectives
NAFE’05 – provide high resolution data for process level understanding of: - soil moisture retrieval- downscaling - and data assimilation.
NAFE’06 – provide simulated SMOS data for trial application of: - soil moisture retrieval- downscaling - and data assimilation.
Second NAFE Workshop
How to meet the objectives?
• Mimic a SMOS pixel (50 by 50 km2)
• Provide multi-incidence L-band data for SMOS algorithm development
• Provide 1 km surface soil moisture data for verification of downscaling approaches using MODIS
• Provide simulated SMOS data every 2-3 days for data assimilation
Second NAFE Workshop
Murrumbidgee Catchment
200 km
Yanco Study Area
Kyeamba Creek
Adelong Creek
Flux Towers
Second NAFE Workshop
Proposal
• Yanco area = SMOS pixel
• Fly PLMR (1km) every 2-3 days over the SMOS pixel
• Multi-incidence (1km) and high res (50m) PLMR flights over focus areas with range of soil moisture and vegetation cover for:– Algorithm development– PLMR verification
Second NAFE Workshop
Proposed workplan
1. Aircraft flight lines
2. Coincident ground data collection
Second NAFE Workshop
40 km
Narrandera
Yanco
Leeton
Griffith
Y3Y2Y1
Y4 Y5
Y8Y6Y7
Y9
Y10
Y11 Y12Y13
Coleambally
CIA
1-km resolution PLMR data
12 N-S flight lines at 10,000 ft AGL
Second NAFE Workshop
40 km
Narrandera
Yanco
Leeton
Griffith
Y3Y2Y1
Y4 Y5
Y8Y6Y7
Y9
Y10
Y11 Y12Y13
Coleambally
CIA
6am6pm
Inclination ofSMOS orbit98.5°
Multi-incidence PLMR data (1km)
3 x 1 flight lines at 10,000 ft AGL
Second NAFE Workshop
40 km
Narrandera
Yanco
Leeton
Griffith
Y3Y2Y1
Y4 Y5
Y8Y6Y7
Y9
Y10
Y11 Y12Y13
Coleambally
CIA
High resolution PLMR data (15x50m; 750m)
10am2pm
3 flight lines at 500 ft AGL
Second NAFE Workshop
Flight schedule
Monday Tuesday Wednesday Thursday Friday
1-km
SMOS-scale
5-10am
1-km
SMOS-scale
5-10am
1-km
SMOS-scale
5-10am
1-km
Multi-incidence
5-7am
1-km
Multi-incidence
5-7pm
50-m
9-11am
50-m
1-3pm
Second NAFE Workshop
Flight time
Flight type Speed3-week
campaign4-week
campaign
1-km SMOS-scale 144 km/h 45 h 60 h
1-km multi-incidence 6am/6pm 144 km/h 9 h 12 h
50-m 10am/2pm 144 km/h 9 h 12 h
Total 63 h 84 h
PLMR calibration (Airport to lake) 180 km/h + ? + ?
Second NAFE Workshop
Ground data collection• 5-cm soil moisture
• vegetation water content
• tower-based TIR and 5cm temperature
• soil moisture profile and met data
• surface soil roughness
• soil texture
• land use, vegetation type, dew amount
• surface fluxes ?
Second NAFE Workshop
Resourcess• Aircraft: Walker + Kim, ???
• Technical: Young
• Laboratory: Shoemark (soil & veg drying)
• Data processing: Panciera
• Field: Merlin, Kalma, Ellett, Draper, Thyer, McVicar x 2, Kerr x 2, Jackson x 2, Houser x 2, Teuling and Huurkmans, Tweed→ ~ 16 people
Second NAFE Workshop
Teams• Three soil moisture teams (3-4 people
each) operating every day at a given site: SM1, SM2, SM3
• One vegetation team (2-3 people) operating every day at 2-3 sites: VEG
Second NAFE Workshop
40 km
Y9
Y11 Y12
Aa
Y10
Y13
Y2Y1
Y6
BbY4
Y7 Y8
Y3
Y5
Coincident SM sampling
Monday Tuesday Wednesday Thursday Friday
A b B a A
B b A a B
A b B a A
B b A a B
Second NAFE Workshop
Sites
Y4
Irrigated cropping, state forest nearby
Y9
Irrigated area (rice)
Y11
Native grassland and grazing
Y13
Native grassland and grazingY7
Native grassland, some cropping
Second NAFE Workshop
SM sampling strategyMonday Tuesday Wednesday Thursday Friday
250 m 50 m 250 m 50 m 250 m
Soil moisture profile station
1 km
1 km
144 points 400 points
“A” 250 m
“a” 50 m
+ 32 points
Second NAFE Workshop
40 km
Y9
Y11 Y12
C
Y10
Y13
Y2Y1
Y6
D
Y4
Y7 Y8
Y3
Y5
40 km
Coincident VEG sampling
Monday Tuesday Wednesday Thursday Friday
C B D A C
A D B C A
C B D A C
A D B C A
Second NAFE Workshop
VEG sampling strategy
Monday Tuesday Wednesday Thursday Friday
16 samples/site
16 samples/site
16 samples/site
16 samples/site
16 samples/site
16 samples = N1(land cover1) + N2(land cover2) +…
1 kmMinimum of 5 per landcover
0
0.5
1
1.5
2
2.5
1 2 3 4 5 6 7 8 9 10 11 12 13 14
MERRIWA PARK WEEK 1
VW
C (
kg/m
^2)
Second NAFE Workshop
40 km
Leeton
Griffith
Y3Y2Y1
Y4 Y5
Y8Y6Y7
Y9
Y10
Y11 Y12Y13
Coleambally
Logistics Cal ?
Cal ? Base
Airport Narrandera
Yanco
Base Airport
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