GPPA review of Himawari-8-IASI-(A/B)/AIRS cross calibration product

The Himawari-8-IASI/AIRS cross calibration product follows the MTSAT-IASI/AIRS cross calibration product that JMA had in Demo Phase during the lifetime of the MTSAT. This MTSAT-IASI cross calibration product had satisfied the GPPA Demo Phase criterion and the now submitted H 8-IASI/AIRS cross calibration product is built above the previous product in the sense that the algorithms and ATBD's have already been reviewed for acceptance. The Himawari series of GEO instruments is advanced GEO satellites of the GOES class. Cross calibration of the H8/9 has been carried on and reported on a daily basis ( See here ). -- ManikBali - 14 Aug 2017 ---+++++

Demo GPPA Time line

1. Product: Submission 14 Aug 2017 1 Review completed (Tim Hewison, Manik Bali) and GRWG Chair (Kim Doheyong) consent received 8 Sept 2017
2. Daily upload of Product on EUMETSAT THREDDS server Oct end 2017- Till date
3. GCC informed on daily upload 10 Dec 2017
4. GDWG Co-Chair (Peter Miu ) Consent (+review) received 12/13/2017

---+++ Product Phase*	---+++ *Step*	---+++ *GPAF*	---+++ *Task*	---+++ *Who*	---+++ *Due/ Done?*
---++++ Submission	1	§I	Product Provider Information	Product provider	t1=0 ATBD
		§II.1	Brief Product Description
		§II.2	Product Scope within GSICS
		§II.3	Product function and performance specifications
		§III.1.A.1	Adherence to GSICS file naming standard
		§III.1.A.2	Adherence to GSICS file format convention
		§III.1.B	Preliminary ATBD
	2		Submit GPAF and preliminary ATBD to GCC Deputy for review to GPAT	Product provider	t2=2015-09-02 GPAF
	3		Determine if GPAF filled out correctly. Decide if product ABTD is adequate. Decide if product within GSICS scope.	GPAT	t2+6wk
	4		GPAT feedback given to Product provider	GCC Director	t3+1wk
	5		Upload sample file to GSICS data server	Product provider GDWG Chair	t4+1wk Done for RAC NRT http://gsics.eumetsat.int/thredds/catalog/himawari8-ahi-aqua-airs-demo-nrtc/catalog.html http://gsics.eumetsat.int/thredds/nrtc-himawari8-ahi-metopa-iasi_products.html http://gsics.eumetsat.int/thredds/catalog/himawari8-ahi-metopb-iasi-demo-nrtc/catalog.html http://gsics.eumetsat.int/thredds/catalog/himawari8-ahi-aqua-airs-demo-rac/catalog.html http://gsics.eumetsat.int/thredds/catalog/himawari8-ahi-metopa-iasi-demo-rac/catalog.html http://gsics.eumetsat.int/thredds/catalog/himawari8-ahi-metopb-iasi-demo-rac/catalog.html
	6		Determine if sample file follows GSICS conventions	GDWG Chair	t5+2wk
	7		Remediate any GPAF issues according to GPAT feedback	Product provider, GCC Director	t4+20d Received 3 reviews 1. Tim Hewison ( See Below) 2. Manik Bali ( See attached ) 3. Peter Miu ( Consent + review see below) GPAT Reviews taken care of
	8		Product enters *Demonstration Phase*	GCC Director	EP requested “123” docs: 1. Impact report and 2. Product validation report See 1 Below 3. alt. cal coeffs val report 3 not relevant Related emails stated below
---++++ Demonstration	9		Product Accepted in Demo Phase in GSICS Memo of GCC Director (Lawrence E. Flynn) to GSICS EP	GCC Director	t8+2wk
	10		Arrange routine upload of Product to a GSICS data server Agree on file retention policy	GDWG Chair, GRWG Chair, Product provider	t8+1m
	11		Notify GSICS users and invite feedback from them	GCC Director	t10
	12	§III.1.B	Complete full ATBD - Submit to GCC Director	Product provider	t8+3m
		§III.1.C	Product traceability to standards - Submit to GCC Director
	13		Review submitted documents (ATBD and product traceability to standards)	GPAT Users	t12+1m
	14		Remediate any document issues according to the GPAT and user feedback	Product provider	t13+1m
	15	§III.2.A	Radiative transfer models	Product provider	t8+6m
		§III.2.B	Cal/val supporting measurements
	16		Examine submitted documents (radiative transfer models and cal/val supporting measurements)	GPAT	t15+1m
	17		Collect and disseminate user feedback regarding product's data usability and format	GCC Director	t8+6m
	18		Remediate any document or data issues according to GPAT and user feedback	Product provider GCC Director	t17+1m
	*19*		*Make consensus decision whether to continue Product acceptance process*	*GPAT*	*t18+2w*
	20		Notify Executive Panel of status of the Product's acceptance process	GCC Director	t19+2w
	21	§III.3.A	Product Quality Documents (Uncertainty and Traceability)	Product provider	t8+10m
	22		Examine the submitted Product Quality Document	GPAT	t21+1m
	23		Remediate any document issues according to GPAT feedback	Product provider	t22+1m
	24		Once all issues are resolved, Product enters *Pre-operational Phase*	GCC Director	t8+1y
---++++ *Pre-operational*	25		Send notification and GPAT Product recommendations to Exec Panel	GCC Director	t24+2w
	26		Exec Panel review GPAT recommendations and send feedback to GCC Director	Exec Panel	t25+6w
	27		GCC Director notifies Product provider about Executive Panel feedback	GCC Director	t26+2w
	28	§III.2.C	Analysis software documentation	Product provider	t24+3m
		§III.2.D	Product version control plan
		§III.3.B	Operations and distribution plan
		§III.3.C	Users' Guide
	29		Examine submitted documents + Provide feedback (product version control plan, operations and distribution plan, and user's guide)	GPAT	t28+1m
	30		Remediate any documentation and overall product issues following Exec Panel and GPAT feedback	Product provider	t29+1m
	31		Review remediation material and decides if requirements are now satisfied. Send final recommendation to the GCC Director.	GPAT	t30+3w
---++++ Operational	32		GCC Director notifies Exec Panel that product has satisfied all requirements to enter *Operational Phase*	GCC Director	t31+1w

1. The Impact and Validation report in the context of the AHI Vs IASI intercalibration should be looked by the prism of small differences between the AHI and IASI. These small differences result in little or no direct impact on downstream products developed from AHI radiances. However when used in applications such as physical retrieval of SST such small differences can minimize the errors in SST. Such a use was demonstrated by JAXA and presented in the GSICS Annual Meeting 2017 in Wisconcin see here Impact report

On Friday, September 8, 2017, Dohy Kim <dohyeong@gmail.com> wrote: Dear Manik

My opinion is that it is ok as it is to move on Demo phase for the Himawari-8/AHI vs. IASI/AIRS IR correction.

I can understand the Masaya's decision to start at the Demo phase. I hope the Himawari-8 product to be submitted to Pre-Operational phase soon.

Best regards,

Dohyeong

|

---+++ Peter Miu <Peter.Miu@eumetsat.int>
Sent: 13 December 2017
	to me, Masaya, Larry, Tim, yogo

On Wed, Sep 6, 2017 at 11:50 AM, Tim Hewison <Tim.Hewison@eumetsat.int> wrote:

Hi Manik, Thanks for this very nice submission to the GSICS Product Acceptance. I particularly like the product’s explanation in §2.1 of the GPAF! Overall, I am happy for this product to enter Demonstration phase. I did not spot any problems with the file naming on content of the example netCDF files. My review of the GPAF and associated ATBD only picked up the few minor comments: 1 1. The linked website (http://www.data.jma.go.jp/mscweb/data/monitoring/gsics/ir/techinfo_geoleoir.html) also gives a very nice overview of the algorithm, but does not explain exactly how to apply the products to AHI data and does not replace a user guide. For example I do not find a description of all the variables included in the netCDF files, except buried deep in the ATBD (§6.d.iv.2). While this is OK to allow the product to enter Demonstration mode, such a guide will be needed for promotion to higher levels of maturity. 1 2. This page also mentions CrIS data is processed, but this appears not to be included in the products. I would like to know the reason. ATBD: 1 3. Figure 6 is missing a text label. 1 4. 4.a.iv.2 – Please define the units for max_STDV 1 5. Where is Outline_JMA_Intercal_System.ppt? Cheers, Tim

Clarification On the Impact Report (E-Mail: Masaya Takahashi, 14 Aug 2017) The impacts of using AHI IR GSICS Correction on users' applications are
expected to be generally small because the AHI biases are small and stable
(e.g. performance report on https://doi.org/10.1117/12.2188978), but it
could have non-negligible impacts on specific applications such as SST.
The GPERF (GSICS Product External Review Form) for Pre-Op Phase will be
the impact report. Manik Review and Response can be found here