1. Users' Requirements During Algorithm Development
Fred Wu, Member of GRWG
Seeking Inputs from GSICS Users’ Workshop
06 September 2011

2. Background
During development, agencies may produce GSICS Correction with different algorithms for their satellites
Agency A
Agency B
Agency C …
Alg. 1
Alg. 2 …
Sat. A1
Sat. B1
Sat. C1 …
Sat. A2
Sat. B2
Sat. C2 … … …
22-25 March 2011, Daejeon, Korea

3. Issue and Question
Consensus for GSICS IR Correction eventually emerged
Took ~5 years
No guarantee that development has ended
Other products (e.g. visible) may have similar development process
Users desire during product development
No requirement for producer – wait or use at own risks
Product with one algorithm be available for all satellites
Product with each algorithm be available for all satellites
Others?
Seeking users inputs to guide our effort.
22-25 March 2011, Daejeon, Korea

4. Current Agency A Agency B Agency C … Alg. 1 Alg. 2 … Sat. A1 Sat. B1
Sat. C1 …
Sat. A2
Sat. B2
Sat. C2 … … …
22-25 March 2011, Daejeon, Korea

5. Option 2 Agency A Agency B Agency C … Alg. 1 Alg. 2 … Sat. A1 Sat. B1
Sat. C1 …
Sat. A2
Sat. B2
Sat. C2 … … …
22-25 March 2011, Daejeon, Korea

6. Option 3 Agency A Agency B Agency C … Alg. 1 Alg. 2 … Sat. A1 Sat. B1
Sat. C1 …
Sat. A2
Sat. B2
Sat. C2 … … …
22-25 March 2011, Daejeon, Korea