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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
13GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008
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
16GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008
Community
M. König & T. Hewison
Decontamination
17GRWG-III/GDWG-II, Camp Springs, MD, USA, 19 Feb 2008
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
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