Fixed-Wing Airborne Radiometer · Wavelength(nm) Irradiance, W/m 2 /nm 500 1000 1500 2000 0 0.25...

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Fixed-Wing Fixed-Wing Fixed-Wing Fixed-Wing Airborne Airborne Airborne Airborne Radiometer Radiometer Radiometer Radiometer C-FAR Terra Validation Instrument Checkout Flight Results 24 March 2000 R.J.Wheeler, E.K. Feldl, M.R. Wilson, G.C. Purgold

Transcript of Fixed-Wing Airborne Radiometer · Wavelength(nm) Irradiance, W/m 2 /nm 500 1000 1500 2000 0 0.25...

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C-FARTerra Validation

Instrument Checkout Flight Results24 March 2000

R.J.Wheeler, E.K. Feldl, M.R. Wilson, G.C. Purgold

Up-Looking RadiometersFR Spectral Hemispheric 0.4 - 2.20 µµµµmEppley PSP 0.3 - 3.0 µµµµmEppley PIR 5- 50 µµµµm

Down-Looking RadiometersFR Spectral Hemispheric 0.4 - 2.20 µµµµmEppley PSP 0.3 - 3.0 µµµµmEppley PIR 5- 50 µµµµmNarrow FOV Spectral Directional Radiance Scanner 0.35 - 2.5 µµµµm (October 2000)

Ambient Total TemperatureAmbient DewpointBarometric Pressure

GPS Position & TimeInternal Flight Pattern Generation & NavigationGyro Attitude and Heading

C-FAR Measurement Complement

The C-FAR Clear-Sky Terra Coincident Ocean Validation Flight Profile.- Five complete patterns from 30 to 3,000 m MSL.- CERES Ocean Validation Platform Coincident Measurements.- Inital Data Flights Conducted 8 & 24 March 2000.

30 m

150 m

300 m

1525 m

3000 m

COVE

32 Km.

112 degrees

COVELighthouse

3 Km.

LaRC

NorfolkAirport

AtlanticOcean

ChesapeakeBay

VirginiaBeach

Virginia'sEasternShore

Outbound

Inbound

C-FAR Footprint (45 Degree Basis)Altitude Footprint Diameter30 m 60 m150 m 300 m300 m 600 m

1500 m 3000 m

3000 m 6000 m

COVELighthouse

LaRCAtlanticOcean

ChesapeakeBay

Virginia'sEasternShore

C-FAR ObservedEffluent Plume

Terra / MISR Coincident Validation Flight24 March 2000

C-FAR 3000mFootprint

10 m

15 m

20 m

COVELighthouse

COVE Region SoundingsMean Low Tide Depths

C-FAR MISR Flight Pattern

G M T ( de cima l- hours)

Wa

vele

ng

th(n

m)

16.35 16.4400

600

800

1000

1200

1400

1600

1800

2000

2200

0.1400.1320.1240.1150.1070.0990.0910.0820.0740.0660.0580.0490.0410.0330.0250.0160.0080.000

W/m2/nm

CFAR - Upwelling Spectroradiometer - Full RangeMISR Overflight Coincident Data24 March 2000 (Day 084)150 m MSL, Outbound Leg

G M T ( de cima l- hours)

Wavelength

16.7 16.75 16.8400

600

800

1000

1200

1400

1600

1800

2000

2200

1.4001.3291.2591.1881.1181.0470.9760.9060.8350.7650.6940.6240.5530.4820.4120.3410.2710.200

W/m2/nm

CFAR - Downwelling Spectral Radiometer -Full RangeMISR Overflight Coincident Data24 March 2000 (Day 084)30 Meters Altitude, Outbound Leg

G M T ( de cima l- hours)

Wavelength

17.797 17.798 17.799 17.8400

600

800

1000

1200

1400

1600

1800

2000

2200

1.4001.3181.2351.1531.0710.9880.9060.8240.7410.6590.5760.4940.4120.3290.2470.1650.0820.000

W/m2/nm

CFAR - Downwelling Spectral Radiometer -Full RangeMISR Overflight Coincident Data24 March 2000 (Day 084)3000 Meters altitude, Outbound Leg

Wavelength (nm)

Irradiance,W

/m2/nm

500 1000 1500 20000

0.025

0.05

0.075

0.1

0.125

0.15

0.175

0.2

30 Meters150 Meters300 Meters1500 Meters3000 Meters

C-FAR Upwelling Spectral IrradianceEffluent Plume Area24 March 2000 (Day 084)

Wavelength (nm)

Irradiance,W

/m2/nm

500 1000 1500 20000

0.025

0.05

0.075

0.1

0.125

0.15

0.175

0.2

30 Meters150 Meters300 Meters1500 Meters3000 Meters

C-FAR Upwelling Spectral IrradianceCOVE Platform Area24 March 2000 (Day 084)

Wavelength (nm)

Irradiance,W

/m2/nm

500 1000 1500 20000

0.25

0.5

0.75

1

1.25

1.5

1.75

2

30 Meters150 Meters300 Meters1500 Meters3000 Meters

C-FAR Downwelling Spectral IrradianceEffluent Plume Area24 March 2000 (Day 084)

Wavelength (nm)

Irradiance,W

/m2/nm

500 1000 1500 20000

0.25

0.5

0.75

1

1.25

1.5

1.75

2

30 Meters150 Meters300 Meters1500 Meters3000 Meters

C-FAR Downwelling Spectral IrradianceCOVE Platform Area24 March 2000 (Day 084)

GMT (Decimal Hours)

Wavelength,nm

16.7 16.75 16.8

400

500

600

700

800

900

1000

1100

1200

0.120.110.100.090.080.070.050.040.030.020.010.00

C-FAR Spectral AlbedoMISR Coincident Data24 March 2000 - day 0843 0 M e te rs A ltitude O utbou nd Le g

GMT (Decimal Hours)

Wavelength,nm

17.8 17.805 17.81 17.815

400

500

600

700

800

900

1000

1100

1200

0.250.230.210.200.180.160.140.130.110.090.070.050.040.020.00

C-FAR Spectral AlbedoMISR Coincident Data24 March 2000 - day 0843000 Meters Altitude Outbound Leg

Wavelength, nm

Sp ec t r alA l b ed o

400 500 600 700 800 900 10000

0.025

0.05

0.075

0.1

0.125

0.15

0.175

0.2

0.225

0.25

30 Meters150 Meters300 Meters1500 Meters3000 Meters

C-FAR COVE Spectral Albedo Variability With HeightMISR Overflight Coincident Data24 March 2000 (Day 084)

Frame 001 27 Apr 2000 | | | |Frame 001 27 Apr 2000 | | | |

Wavelength, nm

SpectralAlbedo

400 600 800 1000 12000

0.025

0.05

0.075

0.1

0.125

0.15

0.175

0.2

0.225

0.25

30 Meters150 Meters300 Meters1500 Meters3000 Meters

C-FAR Spectral Albedo Variability With HeightMISR Overflight Coincident Data24 March 2000 (Day 084)Outbound Legs (West To East Progression)

Frame 001 01 May 2000 | | | |Frame 001 01 May 2000 | | | |

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C-FAR Schedule

April - May 2000 - Broadband Pyranometer & Pyrgeometer Enhancements, Spectroradiometer Recertification

June 2000 - Resumption of Terra Coincident COVE and Hogg Island Flights 2 - 4 Per Month on Optimum Overpass Dates.

August 2000 - Begin Spectral Radiance Scanner Integration

October 2000 - Spectral Radiance Scanner Local Instrument Checkout Flights (COVE / Hogg Island)

November / December 2000 - Yuma Desert BRDF

Spring 2001 - ARM CART (TBD)

C-FAR On The Web at: www-svg.larc.nasa.gov/~Ceres