1GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

AchievementsChallenges & OpportunitiesAction ReviewPlan Ahead

GSICS Research Working Group

Chair’s Report

X. Wu, Feb. 19, 2008

2GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

Publicity

IGARSS, Jul 07, Barcelona, SpainSPIE, Aug 07, San Diego, CaliforniaCalibration Conference, Sep 07, Logan, UtahEUMETSAT/AMS Conference, Sep 07, Amsterdam, The NetherlandsAMS/GOES-R Conference, Jan 08, New Orleans, LouisianaMany other meetings – CGMS, CEOS, …

3GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

Algorithm

Version 1.0, delivered and implemented at NESDISOct 07

Version 1.1, Dec 07Version 1.2, Jan 08

Adapted and implemented at JMA Nov 07Improved modularizationBasis for Version 2

Parallel development and implementation at EUMETSATDraft Algorithm Theoretical Basis Document (ATBD) Feb 08

4GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

Impact – EUMETSAT

0.26-1.6327013.40.060.0529012.00.060.0329010.80.070.002709.70.040.022908.70.040.252607.30.050.612406.20.100.17¶2903.9¶

Standard Deviation

(K)

Mean Bias MSG2-IASI at Tbref (K)

Clear-sky Ref Scene Tbref (K)

Ch (µm)

Truly impressive accuracy and precision

M. König & T. Hewison

~0

5GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

GOES-11 12.0 um

-1

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

1

1 2 3 4 5 6 7 8 9

Days Since 20Oct07

(GO

ES

Tb) -

( AIR

S T

b)

Bias -0.03°K

Impact – NESDIS

6GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

GOES-11 10.7 um

-1

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

1

1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00

Days Since 20Oct07

(GO

ES

Tb -

(AIR

S T

b)

Bias -0.16°K

Impact – NESDIS

7GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

GOES-12 10.7 um

-1

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

1

1 2 3 4 5 6 7 8 9

Days since 20Oct07

(GO

ES

Tb) -

(AIR

S T

b)

Bias -0.32°K

Impact – NESDIS

8GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

GOES-12 13.3 UM

-2.5

-2

-1.5

-1

-0.5

01 2 3 4 5 6 7 8 9

Days Since 20Oct07

(GO

ES

Tb) -

(AIR

S T

b)

Bias -1.11K

Impact – NESDIS

9GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

Schmit and Gunshor: Spectral shift is effective. Is it justified?

10GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

Satellite Instrument with incorrect SRF

Add CO2Add bias

Less CO2Less bias

Warmer

Colder

Is the bias larger for warmer scenes than for colder scenes?

No CO2No bias

11GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

Benefit of careful algorithm design

~3K

~0K

12GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

Reversed correction

Inversion above tropopause

Adding a constant under-corrects warm scenes and over-corrects cold scenes

Less Absorption More Absorption

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14GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

Community

We start to work togetherOne example is JMA’s adaptation of the GSICS GEO-AIRS algorithm

Modular software designDe-McIDASHelp KMA and CMA

Another example is 13.3 µm channel cold bias investigation

15GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

GOES-12 13.3 UM

-2.5

-2

-1.5

-1

-0.5

01 2 3 4 5 6 7 8 9

Days Since 20Oct07

(GO

ES

Tb) -

(AIR

S T

b)

UW/CIMSS: -1.4°K (several satellites)

EUMETSAT -1.6°K

Bias -1.1°K

-2.5°K, First GSICS result on half day of 21FEB07

Community

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Community

M. König & T. Hewison

Decontamination

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Community

Difference Between GOES-12 and AIRS

-3.5

-3

-2.5

-2

-1.5

-1

-0.5

0

0.5

150 200 250 300 350 400

Days since 2007/01/01

dTb

(GO

ES -

AIR

S

dTb(6.5) dTb(107) dTb(133)

Decontamination, 02JUL07

Version 1.0

GOES-12 out of service

18GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

Challenges & Opportunities

OperationImplementation at CMA & KMAAlgorithm improvement and version controlArchive

• Content, Format, Nomenclature, MetadataProtocol for reporting and dissemination

ResearchEncourage innovation and ensure compatibilityMore analysis – trend, seasonal or diurnal characteristics, angular or geographic dependence, difference among GEOs, etc.Algorithm accuracy or capability

19GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

Challenges & Opportunities

Working TogetherSpontaneous – great when happenedPlanned – through communication and delegation

New AlgorithmIASI and AIRS

• Cross calibration• Better diurnal sampling

Visible Channel

PublicityPeer-reviewed papers in scientific journals

20GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

DelayedX. Wu & MemberDec 2007

Provide and maintain the English website (with proper disclaimer) that contains instrument characteristics

GRWG-II 11

Mar 2008V. GärtnerDec 2007

Provide HDF5 template based on the contentGRWG-II 10

Mar 2008X. Wu & MembersDec 2007

Define the initial content of the output data to GDWGGRWG-II 09

On trackM. KönigJune 2008

Provide subset of IASI measurements to members for inter-calibration

GRWG-II 08

Oct 2007X. WuSep 2007

Provide subset of AIRS measurements to members for inter-calibration

GRWG-II 07

On trackX. WuJune 2008

Implement inter-calibration of all operational GEO’s with AIRS at GCC

GRWG-II 06

On trackS. ChungDec 2008

Implement inter-calibration of MTSAT with AIRS. GRWG-II 05

On trackM. KönigJune 2008

Implement inter-calibration of METEOSAT-9/8/7 with AIRS.

GRWG-II 04

On trackY. TaharaJune 2008

Implement inter-calibration of MTSAT with AIRS. GRWG-II 03

On trackP. ZhangJune 2008

Implement inter-calibration of FY-2C/D with AIRS. GRWG-II 02

Oct 2007X. WuJuly 2007

Provide test data, Version 1 of GSICS algorithm for GEO-AIRS co-location and spectral convolution (pseudo-code and one working code), and test results for all GEO’s.

GRWG-II 01

STATUSACTIONEEACTIONACTION No.

GRWG-II Actions

21GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

Turn current “challenges” to future “achievements”Prioritize these (and other) challenges and opportunitiesCollaborate – delegate the tasksThat’s our job for the next few days!

Plan Ahead

22GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008

AchievementsPublicity, Algorithm, Impact, Collaboration

Challenges & OpportunitiesOperation. Innovation and compatibility. Collaboration. Expansion. Publication.

Action ReviewPlan Ahead

Prioritize the challengesWork together to turn them into achievements

Summary