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