1. Establishing a UK OCO/GOSAT expert group Paul Palmer, Hartmut Bösch, Paul Monks, Peter Bernath et al White paper Expert Group: Why? What? Who? OCO Project status

2. OCO/GOSAT white paper Main purposes: 1)Brief UK community on status of OCO and GOSAT and associated activities 2)Match gaps in current OCO/GOSAT science plan with strengths of UK science community 3)Put forward research recommendations to fill gaps 4)Outline a coherent research programme in support of OCO and GOSAT Text based on Lake District meeting in October 2007 Currently distributed for private consultation Plan: Publicly available before NCEO starts

3. Atmos transport Calibration/ Validation Satellite X CO2 vs Models Flasks/aircraft Ground X CO2 Satellite X CO2 Biomass burning Fossil fuels Terrestrial biosphere Ocean fluxes Model intercomparison Assimilation Flux analysis Error/bias characterisation MODIS Fire Science questions Model X CO2 Global C fluxes Science questions Aircraft/ ground X CO2 UK has a role to play in most aspects of OCO/GOSAT UK Workplan for OCO/GOSAT, Carbonfusion

4. White paper science recommendations 1)Build on UK FTS strengths to establish FTS measurements at one or more sites within the UK and possibly at the NERC-funded Cape Verde atmospheric observatory 2)Integrate OCO and GOSAT cal/val in NCAS activities and identify EU- wide opportunities (EUFAR) 3)Develop an atmospheric transport simulation capability to support OCO and GOSAT. 4)Establish (or help develop) a NRT nested-grid simulation of CO 2 mole fraction and column over Europe that complements the US CarbonTracker [consortium bid?] 5)Establish a programme to improve CO 2 source attribution using co- emitted trace gases and complementary EO products (NCEO C and Atmospheric Composition Themes).

5. White paper science recommendations 1)Build on UK FTS strengths to establish FTS measurements at one or more sites within the UK and possibly at the NERC-funded Cape Verde atmospheric observatory 2)Integrate OCO and GOSAT cal/val in NCAS activities and identify EU- wide opportunities (EUFAR) 3)Develop an atmospheric transport simulation capability to support OCO and GOSAT. 4)Establish (or help develop) a NRT nested-grid simulation of CO 2 mole fraction and column over Europe that complements the US CarbonTracker [consortium bid?] 5)Establish a programme to improve CO 2 source attribution using co- emitted trace gases and complementary EO products (NCEO C and Atmospheric Composition Themes).

6. White paper science recommendations 1)Build on UK FTS strengths to establish FTS measurements at one or more sites within the UK and possibly at the NERC-funded Cape Verde atmospheric observatory 2)Integrate OCO and GOSAT cal/val in NCAS activities and identify EU- wide opportunities (EUFAR) 3)Develop an atmospheric transport simulation capability to support OCO and GOSAT. 4)Establish (or help develop) a NRT nested-grid simulation of CO 2 mole fraction and column over Europe that complements the US CarbonTracker [consortium bid?] 5)Establish a programme to improve CO 2 source attribution using co- emitted trace gases and complementary EO products (NCEO C and Atmospheric Composition Themes).

7. White paper science recommendations 1)Build on UK FTS strengths to establish FTS measurements at one or more sites within the UK and possibly at the NERC-funded Cape Verde atmospheric observatory 2)Integrate OCO and GOSAT cal/val in NCAS activities and identify EU- wide opportunities (EUFAR) 3)Develop an atmospheric transport simulation capability to support OCO and GOSAT. 4)Establish (or help develop) a NRT nested-grid simulation of CO 2 mole fraction and column over Europe that complements the US CarbonTracker [consortium bid?] 5)Establish a programme to improve CO 2 source attribution using co- emitted trace gases and complementary EO products (NCEO C and Atmospheric Composition Themes).

8. White paper science recommendations 1)Build on UK FTS strengths to establish FTS measurements at one or more sites within the UK and possibly at the NERC-funded Cape Verde atmospheric observatory 2)Integrate OCO and GOSAT cal/val in NCAS activities and identify EU- wide opportunities (EUFAR) 3)Develop an atmospheric transport simulation capability to support OCO and GOSAT. 4)Establish (or help develop) a NRT nested-grid simulation of CO 2 mole fraction and column over Europe that complements the US CarbonTracker [consortium bid?] 5)Establish a programme to improve CO 2 source attribution using co- emitted trace gases and complementary EO products (NCEO C and Atmospheric Composition Themes).

9. 6)Establish a clear link between atmospheric transport modelling and the surface and ocean flux modelling activities in NCEO and elsewhere. 7)Establish a DA working group to consider (a) model error; (b) error covariance for successive measurements and different species; (c) compare DA techniques. 8)Identify funding stream for ongoing OCO and GOSAT DA work. 9)Develop UK expert group: access data, detailed knowledge of data properties (error characteristics) White paper science recommendations

10. 6)Establish a clear link between atmospheric transport modelling and the surface and ocean flux modelling activities in NCEO and elsewhere. 7)Establish a DA working group to consider (a) model error; (b) error covariance for successive measurements and different species; (c) compare DA techniques. 8)Identify funding stream for ongoing OCO and GOSAT DA work. 9)Develop UK expert group: access data, detailed knowledge of data properties (error characteristics) White paper science recommendations

11. 6)Establish a clear link between atmospheric transport modelling and the surface and ocean flux modelling activities in NCEO and elsewhere. 7)Establish a DA working group to consider (a) model error; (b) error covariance for successive measurements and different species; (c) compare DA techniques. 8)Identify funding stream for ongoing OCO and GOSAT DA work. 9)Develop UK expert group: access data, detailed knowledge of data properties (error characteristics) White paper science recommendations

12. 6)Establish a clear link between atmospheric transport modelling and the surface and ocean flux modelling activities in NCEO and elsewhere. 7)Establish a DA working group to consider (a) model error; (b) error covariance for successive measurements and different species; (c) compare DA techniques. 8)Identify funding stream for ongoing OCO and GOSAT DA work. 9)Develop UK expert group: access data, detailed knowledge of data properties (error characteristics) White paper science recommendations

13. Expert Group: Why? Already lots of traffic OCO science team GOSAT science team NWP centresOther instrument science teams (e.g., NASA A-train) Cal/Val activities external to science team Individual national efforts

14. Current interactions between NERC and STs OCO science team GOSAT science team NERC community Little or no crosstalk between communication channels

15. Expert Group: Proposed streamlined structure UK expert group: first (but not only) port of call OCO science team GOSAT science team NERC community

16. UK expert group: first (but not only) port of call OCO science team GOSAT science team NERC community Existing interactions with OCO ST 1)Weekly telecons 2)Email list 3)Annual ST meeting Existing (and agreed) interactions with GOSAT ST 1)Direct (regular?) visits (from April) 2)AO in April (EGU) Expert Group: Proposed streamlined structure

17. Atmos. transport Calibration/ Validation Satellite X CO2 vs Models Flasks/aircraft Ground X CO2 Satellite X CO2 Biomass burning Fossil fuels Terrestrial biosphere Ocean fluxes Model intercomparison Assimilation Flux analysis Error/bias characterisation MODIS Fire Science questions Model X CO2 Global C fluxes Science questions Aircraft/ ground X CO2 Expert Group: immediate role UK Workplan for OCO/GOSAT, Carbonfusion

18. Expert Group: Who? *Bernath † Bösch *Monks * † Palmer ?? L0, L1 processing L2 OE retrievals (X CO2 ) Cal/val Flux and atm. transport models Assimilation Expertise and experience * NCEO; †OCO ST associate (=early datastream)