EOS Validation: SAFARI 2000 Hank Revercomb University of Wisconsin - - PowerPoint PPT Presentation

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EOS Validation: SAFARI 2000 Hank Revercomb University of Wisconsin - - PowerPoint PPT Presentation

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EOS Validation: SAFARI 2000 Hank Revercomb University of Wisconsin - Madison AIRS Science Team Meeting 19-21 June 2001 Topics: Scanning-HIS airborne FTIR (ER-2 and DC-8) South African Fires Smoke haze CO detection Land

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SLIDE 1

EOS Validation: SAFARI 2000

Hank Revercomb University of Wisconsin - Madison AIRS Science Team Meeting 19-21 June 2001 Topics:

  • Scanning-HIS airborne FTIR (ER-2 and DC-8)
  • South African Fires
  • Smoke haze
  • CO detection
  • Land surface emissivity
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SLIDE 2

Scanning-HIS: Aircraft interferometer for NASA ER-2 and DC-8

Hank Revercomb University of Wisconsin, Space Science and Engineering Center

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SLIDE 3

Scanning HIS: ER2 Centerline Pod

(HIS= High-resolution Interferometer Sounder)

Characteristics: Spectral Coverage: 3-17 microns Spectral Resolution: 0.5 cm-1 Resolving power: 1000-6000 Footprint Diameter: 2 km Cross-Track pattern: Programmable SAFARI Swath width: 30 km

  • r Nadir only

Roots: • U. of Wisconsin HIS Program, 1978-present

  • 1st U2/ER2 HIS, 1985-present
  • NAST-I, close cousin, for NPOESS testbed (Wingpod)
  • First ER-2 Mission: Wintex, 1999
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SLIDE 4

Scanning HIS Radiances-24 August 2000

SAFARI Terra Overpass-Clear Water Longwave Midwave Shortwave

CO2 CO N2O H2O H2O CH4/N2O CO2 O3

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SLIDE 5

SHIS Goals for SAFARI

u IR Spectral Characteristics of Smoke/Haze u CO Detection -- MOPITT comparisons u Surface Emissivity Variations over wide

range of surface types

u Cloud Radiative Properties associated with

burning

u Terra/MODIS Validation

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SLIDE 6

Scanning-HIS SAFARI Summary (1)

Hank Revercomb & Robert Knuteson, U of Wisc, 5-30-01

  • Data Collection and Analysis Schedule:
  • 90 hours of radiance data collected during 14 ER-2 flights
  • Preliminary processing conducted in the field
  • Final radiance processing on 4 of 14 flights (20 hours) complete
  • Radiance processing to be completed by September 2001
  • Early results on CO and surface emissivity planned for

AMS Satellite Conference, 15-18 October 2001

  • Smoke/Cloud results by early 2002
  • Current Analysis Status (May 2001):
  • Identified infrared spectral signature of burning fires (1, 7 Sept 2000)
  • Detected elevated CO concentration associated with burning fires
  • Estimated land surface emissivity in 8-12 micron window

for a variety of surface types

  • Started analyses of cloud/smoke/haze (cirrus & haze examples)
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SLIDE 7

Fire Radiometric Signature

(1 Sept Night Flight, 7 Sept Controlled Burn)

  • High temperature and enhanced CO2 provide a unique

“blue Spike” signature in high resolution spectra

7 mW/m2 sr cm-1 350 250 T(K) 1900 2800 Wavenumber (cm-1)

MAS

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SLIDE 8

CO Detection over Fire

(1 Sept Night Flight)

Optical Depth Estimate Brightness Temperature (4.09, 4.66 mm)

Column CO doubles over the fire

17:45 Time (UTC) 17:54 0.7 315 275

METEOSAT

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SLIDE 9

Burn Scar Surface Characteristics

(7 September Controlled Burn)

Difference (K)

Uncertainty of mean (5 sec)

1300 600 Wavenumber (cm-1)

Both are “black” in the infrared Burn Scar Vegetated

200 320 Tb(K) Tb(K) 10

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SLIDE 10

Namibian Land Surface Emissivity

(11 September 2000)

Kalahari Kuiseb

Brightness T Emissivity Namibian Coast

  • Kuiseb River Canyon

[Dunes (left)ªDesert pavement]

  • Kalahari Desert (Vegetated)
  • Ocean

Wavenumber (cm-1)

275 325 1.0 0.6 750 1250

MAS

METEOSAT

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SLIDE 11

Inhaco Island Surface Emissivity

( 24 August 2000)

Land surface-barren Clear Water Brightness T (K)

315 265

MOPITT-A Video DT=5 K

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SLIDE 12

Okavanga Delta Mapping

( 27 August 2000)

Scanning HIS: 2 km footprints Tb (980-985 cm-1) MODIS: 0.25 km 0.65 mm

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SLIDE 13

Okavanga Delta Surface Emissivity

( 27 August 2000)

Tb (980 cm-1)

Tb (980) - Tb(1125) +6

  • 2

750 cm-1 1250 cm-1

DT=5 K

Tb(K)

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SLIDE 14

Sua Pan Land Surface Emissivity

(27 August 2000)

08:44 UT 08:47 UT

Surprisingly “black” for bare surface- Probably Wet

MAS

METEOSAT

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SLIDE 15

PLAYA CHARACTERIZATION 2. - LAKE Rosamond, Dryden

Land Surface Emissivity and Temperature, N. Bower

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SLIDE 16

Cirrus Cloud Radiative Properties

(31 August 2000)

  • Small ice particles have

absorption cross-sections that lead to “non-black” clouds.

CO2 O3

Ice Signature

GSFC Lidar

METEOSAT

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SLIDE 17

Black Cloud, Haze, and Clear skies

(over Mozambique, 24 August 2000)

Brightness T (K)

315 265

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SLIDE 18

24 August: Clouds and Haze, and Clear

  • ver Mozambique (MOPITT-A Video)

“Black” Clouds Heavy Haze Mixture

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SLIDE 19

UWisc S-HIS SAFARI Summary (2)

  • Suggested Collaborations:
  • Carbon Monoxide: MOPITT-A (Jim Drummond, Wallace McMillan)
  • Land Surface Emissivity: MAS (Chris Moeller, Paul Menzel)
  • Cloud/Smoke: MAS (Steve Ackerman, Steve Platnick)
  • Profiling: In situ FTIR on UWash CV 580 (Bob Yokelson)
  • Submitted Abstracts:
  • Radiometric evaluation of MODIS emissive bands through comparison

to ER-2 based MAS data (SPIE*); C. C. Moeller, D. D. LaPorte,

  • H. E. Revercomb, W. P. Menzel
  • Infrared Land Surface Emissivity Retrieval from High-spectral

Resolution Upwelling Radiance (AMS**); Robert Knuteson, Brian Osborne, Henry Revercomb, Dave Tobin

  • CO and CH4 Column Retrieval from S-HIS and NAST-I (AMS**);

Kenneth Vinson, Henry Revercomb, H. Ben Howell, Robert Knuteson * EOS VI Conference, July 29 – Aug 3, 2001, San Diego, CA ** 11th Conf. on Satellite Met. & Ocean., 15-18 Oct., 2001, Madison, WI

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SLIDE 20

S-HIS Data Collection Record

ER-2 DATE SORTIE MISSION DATA START/END (HOURS) SCAN MODE

  • 17 AUG 2000 00-147

SKUKUZA / MOZAMBIQUE N/A 20 AUG 2000 00-148 BOTSWANA N/A 22 AUG 2000 00-149 NORTHERN PROVINCE, SA N/A 24 AUG 2000 00-150 INHACA ISLAND, MOZ. 06:50 13:50 (7) NADIR 25 AUG 2000 00-151 SUA PAN, BOTSWANA 06:50 13:00 (6) NADIR 27 AUG 2000 00-152 OKVANGA DELTA 07:35 13:00 (5.5) SCANNING 29 AUG 2000 00-153 NORTHERN PROVINCE, SA 07:50 13:50 (6) SCANNING 31 AUG 2000 00-154 NORTHERN PROVINCE, SA 07:00 08:45 (1.5) NADIR 1 SEP 2000 00-155 NIGHT FLIGHT ZAMBIA 17:00 22:00 (5) NADIR 4 SEP 2000 00-156 SUA PAN, BOTSWANA N/A 6 SEP 2000 00-157 MONGU TOWER, ZAMBIA 06:30 12:30 (6) NADIR 7 SEP 2000 00-158 TIMBAVATI, S.A. 07:17 13:00 (5.5) NADIR 9 SEP 2000 00-159 PRETORIA AIR SHOW N/A 11 SEP 2000 00-160 NAMIBIA 07:30 14:30 (7) NADIR 13 SEP 2000 00-175 NAMIBIA 06:30 14:30 (8) SCANNING 14 SEP 2000 00-176 NAMIBIA 08:00 09:00 (1) SCANNING 17 SEP 2000 00-177 ZAMBIA 06:30 14:00 (7.5) SCANNING 21 SEP 2000 00-178 OFFSHORE MOZAMBIQUE 07:30 13:00 (5.5) SCANNING 23 SEP 2000 00-179 SKUKUZA 07:30 12:00 (4.5) SCANNING

  • TOTAL HOURS:

89 N/A = Data Not Available

http:\\cimss.ssec.wisc.edu (S-HIS link)