AIRS Minor Constituents Focus Group: Turning small residuals into - - PowerPoint PPT Presentation

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AIRS Minor Constituents Focus Group: Turning small residuals into - - PowerPoint PPT Presentation

Jan 16, 2024 204 likes •534 views

AIRS Minor Constituents Focus Group: Turning small residuals into science Turning small residuals into science Wallace McMillan, Juying Warner, Michele McCourt Comer, Larrabee Strow, Sergio De-Souza Machado, Scott Hannon (UMBC/JCET), Mous

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AIRS Minor Constituents Focus Group: Turning small residuals into science Turning small residuals into science

Wallace McMillan, Juying Warner, Michele McCourt Comer, Larrabee Strow, Sergio De-Souza Machado, Scott Hannon (UMBC/JCET), Mous Chahine, Sung-Yung Lee, Ed Olsen, Luke Chen, Eric Fetzer, Evan Manning, Bill Irion, Brian Kahn (JPL),

  • C. Barnet and Eric Maddy (NOAA/NESDIS),

Joel Susskind and John Blaisdell (NASA GSFC)

AIRS Science Team Meeting 1 9/2606

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GOALS

  • 1. Get as many minor constituent products

ready for v5.0 PGE as possible

  • 2. Must have averaging kernels
  • 3. Validate v5.0 PGE minor constituent

products

  • 4. Continue minor constituent retrieval

development beyond v5.0 PGE

AIRS Science Team Meeting 2 9/2606

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Summary

  • CO

v5 Standard Product

  • CH4

v5 Standard Product

  • SO2

v5.0 flag, L1B PGE; retrieval v6.0?

  • dust

v5.0 score, L1B PGE; retrieval v6.0?

  • H2O

averaging kernel output in v5

  • O3

averaging kernel output in v5

  • CO2

v5 Support Product

  • HNO3

column retrieval for v6?

  • N2O

column retrieval for v6?

  • CFC’s little signal apparent in data

AIRS Science Team Meeting 3 9/2606

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SLIDE 4

Minor Constituents Talks

  • Averaging kernels – Maddy (Thurs 8:50AM)
  • O3

Irion (Thurs 8:30AM) Divarkarla (Thurs 9:10AM) Pan (Thurs 9:30AM) Tian (Thurs 9:50AM) Chahine (Thurs 10:40AM) Wei (Thurs 11:40AM) Chahine (Thurs 11:40AM)

  • CO

McMillan (Thurs 11:20AM) Wei (Thurs 11:40AM)

  • CH4

Xiong (Thurs 1:30PM)

  • CO2

Chahine (Thurs 10:40AM)

  • SO2

Hannon (Thurs 11:00AM)

  • Dust

Machado (Thurs 2:20PM)

AIRS Science Team Meeting 4 9/2606

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SLIDE 5

UMBC

  • W. McMillan (mcmillan@umbc.edu) 2006 Spring AGU Meeting, 25 May 2006

AIRS CO during INTEX-B

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SLIDE 6

AIRS O3 during INTEX-B

UMBC

  • W. McMillan (mcmillan@umbc.edu) 2006 Spring AGU Meeting, 25 May 2006

AIRS O3 during INTEX-B

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June May

Jan July Aug Nov Sep Oct Dec

AK-CA, 2004 (CH4 in 350 mb) Xiaozhen Xiong

May

July

June

Aug Sep Nov Oct Dec Jan Mar Feb Apr

Increase in July, Aug and Sept

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Volcanic SO2 20060521 Volcanic SO2 Scott Hannon Dobson Units

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AIRS Dust Score MODIS sees dust Sergio DeSouza Machado

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Minor Constituents: Issues

  • Verticality – Averaging Kernels

– Retrieval dependent – Absolutely critical for modelers to use data!! – Averaging Kernel says how perturbations in each trapezoid affect the retrieval A = (9x9) – Verticality says how AIRS sees the total column (modelers already Beta testing) = sum of the rows of A – CO degrees of freedom = trace(A) – AIRS v5 CO is compatible with what modelers already use (MOPITT)

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V5 New Outputs

  • Standard products

– CO_VMR_eff = 9 point vector – CO_eff_press = 9 point vector – CO_verticality = 9 point vector – CO_dof = 9 point vector – CO_rettrap = number of trapezoids in retrieval

  • Support products

– CO_avg_kern = 9x9 matrix – CO_cd = 100 layer columns – CO_lev = AIRS layers, defines trapezoids

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CO Update

  • Optimization (Michele McCourt Comer)

– CMDL and MOZAIC profiles with complete averaging kernel convolution – 9 trapezoids (pre-launch used 4) – Optimized damping parameter – v4.0 validated with 2003-2004 profiles

  • AIRS RMS < 15% on trapezoids
  • Now evaluating v5 optimization
  • MOPITT a priori profile
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AIRS CO Retrieval Vertical Functions

4 trapezoids

8 trapezoids

8 trapezoids 9 trapezoids

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AIRS CO Retrieval Vertical Functions

4 trapezoids

8 trapezoids Michele McCourt Comer

8 trapezoids 9 trapezoids

MOPITT matching trapezoids

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First Guess CO: AFGL vs. MOPITT

4 trapezoids 8 trapezoids Michele McCourt Comer

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First Guess CO: AFGL vs. MOPITT

4 trapezoids 8 trapezoids Michele McCourt Comer

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V4.2 -- AFGLfg 4 trapezoids mean(COdof) = 0.47

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V4.6.2 -- MOPITTfg 9 trapezoids mean(COdof) = 0.76

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V4.2 -- AFGLfg and 4 trapezoids

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V4.6.2 -- MOPITTfg and 9 trapezoids

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V4.6.2 -- MOPITTfg 9 trapezoids

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V4.6.2 -- MOPITTfg 9 trapezoids

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V4.6.2 -- MOPITTfg 9 trapezoids

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V4.6.2 -- MOPITTfg 9 trapezoids

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V4.6.2 -- MOPITTfg 9 trapezoids

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V4.6.2 -- MOPITTfg 9 trapezoids

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V4.6.2 -- MOPITTfg 9 trapezoids

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V4.6.2 -- MOPITTfg 9 trapezoids

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V4.6.2 -- MOPITTfg and 9 trapezoids

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In situ saw 700 ppbv At 500 mb! V4.6.2 -- MOPITTfg and 9 trapezoids

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V4.2 -- AFGLfg and 3 trapezoids

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Summary

  • CO

v5 Standard Product

  • CH4

v5 Standard Product

  • SO2

v5.0 flag, L1B PGE; retrieval v6.0?

  • dust

v5.0 score, L1B PGE; retrieval v6.0?

  • H2O

averaging kernel output in v5

  • O3

averaging kernel output in v5

  • CO2

v5 Support Product

  • HNO3

column retrieval for v6?

  • N2O

column retrieval for v6?

  • CFC’s little signal apparent in data