AIRS Radiance Validation with the Scanning HIS aircraft instrument - - PowerPoint PPT Presentation

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AIRS Radiance Validation with the Scanning HIS aircraft instrument - - PowerPoint PPT Presentation

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AIRS Radiance Validation with the Scanning HIS aircraft instrument Hank Revercomb, David C. Tobin, Robert O. Knuteson, Fred A. Best University of Wisconsin-Madison, Space Science and Engineering Center AIRS Science Team Meeting Marriott,

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SLIDE 1

Hank Revercomb, David C. Tobin, Robert O. Knuteson, Fred A. Best

University of Wisconsin-Madison, Space Science and Engineering Center

AIRS Radiance Validation with the Scanning HIS aircraft instrument

AIRS Science Team Meeting Marriott, Greenbelt, MD 30 November- 2 December 2004

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SLIDE 2

TOPICS

  • 1. S-HIS: Recent WB57 Integration &

Calibration Accuracy

  • 2. New 2004 S-HIS data sets, including
  • - Night Flights
  • - Arctic Scenes
  • 3. Preliminary AIRS Validation

comparisons

  • 4. Interesting tidbits
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SLIDE 3
  • 1. Scanning-HIS: Recent WB57

Integration & Calibration Accuracy

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SLIDE 4

UW Scanning HIS: 1998-Present

(HIS: High-resolution Interferometer Sounder, 1985-1998)

Characteristics

Spectral Coverage: 3-17 microns Spectral Resolution: 0.5 cm-1 Resolving power: 1000-6000 Footprint Diam: 1.5 km @ 15 km Cross-Track Scan: Programmable including uplooking zenith view

  • Radiances for

Radiative Transfer

  • Temp & Water Vapor

Retrievals

  • Cloud Radiative Prop.
  • Surface Emissivity & T
  • Trace Gas Retrievals

Applications:

Sensor Module with Interferometer Data System External Blackbody Chamber Electronics Box Sensor Module with Interferometer Data System External Blackbody Chamber Electronics Box

  • n DC-8

Longwave Midwave Shortwave

CO N2O H2O H2O N2O CH4 CO2 O3 CO2

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SLIDE 5

Scanning HIS Interferometer: with

Telescope, Collection optics, & Detectors/Cooler

Laser metrology on bottom of optical bench

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SLIDE 6

Aura Validation Expt

AVE, 26 October 2004

S-HIS

scans cross- track downward & looks upward Left Wing Pod

S c a n n i n g H I S

NASA WB57

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SLIDE 7

Scanning HIS Integration to WB57 23-26 October 2004

Aerodynamic Buffeting Control Up-looking Port Power Conditioning Unit

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SLIDE 8

S-HIS -2 Altitudes

AVE, 29 October 2004

15 micron CO2

Potential for spectral net flux & cooling rate, but requires repeated track and very stable conditions

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SLIDE 9

S-HIS –Tropospheric Emission Spectrometer (TES) Bands

near 31 Oct overpass

∼5.5 x 16 km

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SLIDE 10

S-HIS Image, Opaque Water Vapor

1517 cm-1 AVE, 26 October 2004

Aura Under-fly

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SLIDE 11

S-HIS Spectra, Nadir and Zenith

AVE, 26 October 2004

Averaged over Aura leg before spiral descent

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SLIDE 12

S-HIS Spectra, 15 µm CO2

AVE, 26 October 2004

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SLIDE 13

S-HIS Spectra, 10.6 µm O3

AVE, 26 October 2004

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SLIDE 14

S-HIS Spectra, 7.7 µm CH4

AVE, 26 October 2004

Apodized

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SLIDE 15

S-HIS Spectra, 6.3 µm H2O

AVE, 26 October 2004

Apodized

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SLIDE 16

S-HIS Spectra, 4.67 µm CO

AVE, 26 October 2004

Apodized

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SLIDE 17

S-HIS Spectra, SW/4.3 µm CO2

AVE, 26 October 2004

Zenith (good zero) non-zero agreement Apodized

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SLIDE 18

S-HIS Spectra, 4.73 µm O3

AVE, 26 October 2004

CO2 O3

Apodized

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SLIDE 19

Scanning-HIS Radiometric Calibration Budget

TABB= 227, THBB=310, 11/21/02 Proteus

Similar to Best, et al., CALCON 2003

SW MW LW SW MW LW

RSS of Errors in THBB,TABB TRfl εHBB, εABB + 10% of non-linearity correction

3-sigma Tb error < 0.3 K for Tb >220 K

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SLIDE 20
  • 2. New 2004 S-HIS data sets

including

  • - Night Flights
  • - Arctic Scenes
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SLIDE 21

Scanning-HIS: 2004 Field Experiment Definition

ADRIEX: Aerosol Direct Radiative Impact Experiment EAQUATE: European Aqua Thermal Experiment MPACE: Mixed-Phase Arctic Cloud Experiment AVE: Aura Validation Experiment

Proteus aircraft used for 1st 3, WB57 for AVE

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SLIDE 22

ADRIEX Flights- 6,7,8,9 Sept

Aqua overpass at 01:05 UTC Aqua overpass at 00:53 UTC

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SLIDE 23

ADRIEX 040907

AIRS 1000 1/cm Tb (K)

Potenza

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SLIDE 24

EAQUATE Flights- 14,18 Sept

Aqua overpass at 13:19 UTC Aqua overpass at 12:54 UTC

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SLIDE 25

EAQUATE 040914

AIRS 1000 1/cm Tb (K)

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SLIDE 26

MPACE Flights

Flight Date Sortie # Mission Summary Start Time End Time (UTC) 10/08/2004 292 Barrow/Oliktok overpass 18:00 24:00 10/09/2004 293 Barrow/Oliktok overpass 19:00 00:40 10/10/2004 294 A-Train Under-flight SE of Fairbanks 21:15 23:15 10/12/2004 295 Barrow/Oliktok overpass 20:30 01:30 10/15/2004 296 A-Train Under-flight West of Fairbanks 21:30 24:00 10/17/2004 297 Barrow overpass and Cloud Sampling 19:30 01:30 (not shown) 10/18/2004 298 Oliktok overpass and Cloud Sampling 19:15 00:30

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SLIDE 27

MPACE Flights

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SLIDE 28

MPACE 10/12

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SLIDE 29

MPACE 10/12

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SLIDE 30

AVE Flights

Date Mission Summary Start/End Time(UTC) 041029 MLS Validation 1700 2220 041031 TES Validation 1600 2115 041103 MLS Validation 1707 2228 041105 MLS Validation 1750 2280 041107 TES Validation 1750 2150 041109 Aura Validation 1540 2130 041110 OMI Validation 1800 2245 041112 MLS Validation 1600 2100

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SLIDE 31

AVE Flights

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SLIDE 32

AVE Flight 10/31

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SLIDE 33
  • 3. Preliminary AIRS

Validation Comparisons

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SLIDE 34

AIRS/S-HIS ADRIEX Comparison

Preliminary: Just averaging S-HIS over AIRS FOVs

Ocean, South of Italy, 7 Sept 2004

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SLIDE 35

Perspective from 2002 Gulf of Mexico Comparison

8 AIRS FOVs, 448 SHIS FOVs, PC filtering

AIRS SHIS

“comparison 0”

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SLIDE 36

21 Nov 2002 “comparison 0”

8 AIRS FOVs, 448 SHIS FOVs, PC filtering S-HIS Spectrum Nyquist sampled without gaps

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SLIDE 37

(AIRSobs-AIRScalc)- (SHISobs-SHIScalc) (K)

Final “Comparison 2” (21 November 2002) Excluding channels strongly affected by atmosphere above ER2

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SLIDE 38

ADRIEX 040907

AIRS, 01:09 UTC S-HIS, 00:20-00:25 UTC

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SLIDE 39

ADRIEX 040907- Mountains

AIRS, 01:09 UTC S-HIS, 00:55-01:00 UTC

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SLIDE 40

ADRIEX 040907- Ocean

AIRS, 01:09 UTC S-HIS, 01:10-01:20 UTC

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SLIDE 41

ADRIEX 040909

AIRS, 00:57 UTC S-HIS, 00:45-00:50 UTC

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SLIDE 42

ADRIEX 040909

AIRS, 00:57 UTC S-HIS, 01:40-01:45 UTC

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SLIDE 43

ADRIEX 040909

AIRS, 00:57 UTC S-HIS, 01:55-02:00 UTC

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SLIDE 44

EAQUATE 040914

AIRS, 13:19 UTC S-HIS, 13:10-13:22 UTC

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SLIDE 45

EAQUATE 040918

AIRS, 12:54 UTC S-HIS, 12:45-12:57 UTC

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SLIDE 46

MPACE 10/08

AIRS, 22:29 UTC S-HIS, 22:20-22:30 UTC

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SLIDE 47

MPACE 10/08

AIRS, 22:29 UTC S-HIS, 21:50-22:05 UTC

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SLIDE 48

MPACE 10/08

AIRS, 22:29 UTC S-HIS, 22:40-22:50 UTC

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SLIDE 49

MPACE 10/09

AIRS, 23:11 UTC S-HIS, 22:55-23:10 UTC

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SLIDE 50

MPACE 10/09

AIRS, 23:11 UTC S-HIS, 22:45-22:55 UTC

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SLIDE 51

MPACE 10/09

AIRS, 23:11 UTC S-HIS, 22:30-22:40 UTC

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SLIDE 52

MPACE 10/12

AIRS, 22:03 UTC S-HIS, 21:30-21:45 UTC

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SLIDE 53

MPACE 10/12

AIRS, 22:03 UTC S-HIS, 22:30-22:45 UTC

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SLIDE 54

AIRS, 19:20 UTC S-HIS, 18:24-18:30 UTC

AVE Flight 10/29

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SLIDE 55

AIRS, 19:04 UTC S-HIS, 18:54-19:06 UTC

AVE Flight 10/31

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SLIDE 56

AIRS, 19:38 UTC S-HIS, 19:15-19:30 UTC

AVE Flight 11/03

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SLIDE 57

AIRS, 19:25 UTC S-HIS, 19:20-19:34 UTC

AVE Flight 11/05

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SLIDE 58

AIRS, 19:32 UTC S-HIS, 19:24-19:40 UTC

AVE Flight 11/12

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SLIDE 59
  • 4. Interesting Tidbits
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SLIDE 60

MPACE 10/17: Sample SHIS and AERI-ER spectra for radiative transfer studies

Above cloud (S-HIS nadir and

zenith views from 22:35 to 22:40)

Within cloud (S-HIS nadir and

zenith views from 22:55 to 23:00)

Below cloud (ground based

AERI-ER from 22:35 to 23:00)

Alt (km)

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SLIDE 61

S-HIS Zenith views- MPACE, 17 Oct 04

Mean S-HIS zenith view

  • n 17 Oct 2004, 22:02-22:40 UTC

from ~12.5 km over Barrow, AK

220 K 200 K 180 K

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SLIDE 62

HNO3 in S-HIS Zenith views

Mean S-HIS zenith view

  • n 17 Oct 2004, 22:02-22:40 UTC

from ~12.5 km over Barrow, AK

220 K 200 K 180 K

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SLIDE 63

S-HIS Zenith views- log scale

Mean S-HIS zenith view

  • n 17 Oct 2004, 22:02-22:40 UTC

from ~12.5 km over Barrow, AK

220 K 200 K 180 K 150 K 120 K 100 K

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SLIDE 64

HNO3 in S-HIS Zenith views

MPACE, Barrow Alaska, 12.5 km, 17 Oct AVE, Gulf of Mexico, 17.5 km, 7 Nov

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SLIDE 65

Summary

  • We now have the data to establish a definitive

initial radiance validation of AIRS-- Absolute, nearly all channels, no model dependence

  • A comparison of S-HIS with the NIST TXR

transfer radiometer is being planned for 2005

  • Future AIRS comparisons are expected to

test long-term stability

  • S-HIS is now setup to fly on the WB57