CEOS Development Environment

AC-VC-19 / ACSG Joint Meeting 2023

Event Dates: October 24th - 27th, 2023

Brussels, Belgium

CEOS AC-VC-19 / ACSG Joint Meeting in Brussels.

October 24-27

More details:

Meeting Registration

Meeting Agenda and Technical Guidelines V0.2


Agenda  (all times given in CEST / UTC +2 / EDT +6 / PDT +9 / JST/KST -7 / AEDT -9)

Tuesday 24 October 2023

08:25 CEST

Opening and logistics [presentation]

N. Kalb, J.-C. Lambert

08:30 – 08:40

Tu-01 – Welcome by BELSPO [presentation]

J.-C. Schyns (BELSPO)

08:40 – 08:50

Tu-02 – Welcome by BIRA-IASB 

M. De Mazière (BIRA-IASB)*



Chair: J. Worden (JPL) and Y. Meijer (ESA). Rapporteur:  TBD

08:50 – 08:55

Tu-03 GHG session welcome and introduction 

J. Worden (JPL/Caltech)

08:55 – 09:05

Tu-04 GHG Constellation overview / gaps & concerns / items of interest [presentation]

Y. Meijer (ESA/ESTEC)

Updates on Current Missions   –   Chair: Y. Meijer (ESA)

09:05 – 10:00

4-5 min. each


Tu-05 – The GOSAT-GW mission: Updates on the GHG and NO2 observing capabilities [presentation]

H. Tanimoto (NIES)

Tu-06 – Role of the Orbiting Carbon Observatory missions (OCO-2 and OCO-3) towards an integrated global greenhouse gas monitoring system [presentation]

A. Chatterjee (JPL/Caltech)

Tu-07 – Status of CO2M mission [presentation]

Y. Meijer (ESA/ESTEC)

Tu-08 – Status and Development of China’s greenhouse gas monitoring satellite missions [presentation]

Y. Liu (IAP/CAS)

Tu-09 – TROPOMI CH4 status [presentation]

I. Aben (SRON)

Tu-10 – GOSAT Science team activities [presentation]

R. Imasu (U. Tokyo)*

Tu-11 – GEOCARB status [presentation]

S. Crowell (LumenUs Scientific, LLC)

Tu-12 – MICROCARB, MERLIN, GESat constellation [presentation]

C. Deniel (CNES)

Tu-13 – NarSha Project: The First Korean Near Real-time Methane Monitoring Microsatellite Constellation Mission [presentation]

J.-P. Park (Nara Space)

Tu-14 – Current Status of the GHGSat Constellation [presentation]

E. Choi (GHGSat)

09:55 – 10:05

Q&A on current missions


Level-2 Algorithms   –   Chair: J. Worden (JPL/Caltech)

10:05 – 10:12

Tu-15 – The TROPOMI CH4 Data Product: Current Status, Future Development, and New Mission Perspectives [presentation]

J. Landgraf (SRON)

10:12 – 10:19

Tu-16 – GOSAT, GOSAT-2, and GOBLEU: 14-year global grid data and targeted mega city observations [presentation]

A. Kuze (JAXA)*

10:19 – 10:30

Tu-17 – Q&A: (suggestions)  What are additional improvements needed in L2 algorithms / observing strategies to reduce uncertainties in CO2 and CH4 observations? 


Coffee/Tea  10:30 – 10:45  (hosted)

Cal/Val Status / Needs / Synergies   –   Chair: H. Tanimoto (NIES)

10:45 – 11:30

6-7 min. each

Tu-18 – Update on the GHG column/profile ground-based networks [presentation]


Tu-19 – OCO 2/3 validation needs [presentation]

A. Chatterjee (JPL/Caltech)

Tu-20 – Status of CO2M product processing and product validation developments [presentation]


Tu-21 – Vicarious calibration for GHG sensors [presentation]

S. Kei (JAXA)*

Tu-22 – Ground and ship-based remote sensing observations for GOSAT validation and Japan’s urban flux estimates [presentation]

H. Tanimoto (NIES)

11:30 – 11:45

Tu-23 – Q&A (suggestions): What is needed to support validation of observations in interesting locations (e.g. tropics). What are current rationale for selecting validation sites and techniques? 


CEOS GHG Activities and Stakeholder Engagement   –   Chair: K. Bowman (JPL/Caltech)

11:45 – 12:00

Tu-24 – GHG Task team updates, WG-Climate [presentation]

Y. Meijer (ESA/ESTEC)

12:00 – 12:15

Tu-25 – Status of CEOS contribution to stock-take and next steps / Summary of “reporting emissions and uncertainties” workshop [presentation]

J. Worden (JPL/Caltech)

12:15 – 12:30

Tu-26 – CEOS AFOLU status and evaluating with top-down emissions [presentation]

B. Poulter (NASA/GSFC)*

12:30 – 12:45

Tu-27 – WMO and CEOS: role of space based observations in GGGW [presentation]

O. Tarasova (WMO)*

12:45 – 13:00

Q&A (suggestions): How can CEOS increase stakeholder engagement of satellite products? Is this the right distribution of CEOS priorities? 


Lunch  13:00 – 14:00  (hosted)

Operationalizing top-down emissions estimation and reporting from satellite missions     Chair: D. Varon (Harvard)

14:00 – 14:08

Tu-28 – NOAA observations relevant to quantifying fire emissions. [presentation]

S. Kondragunta (NOAA)

14:08 – 14:16

Tu-29 – Detecting large methane point sources with the US Geostationary Operational Environmental Satellites (GOES) [presentation]

D. Varon (Harvard)

14:16 – 14:24

Tu-30 – Integrating methane satellite observations at different scales. [presentation]

B. Maasakkers (SRON)

14:24 – 14:32

Tu-31 – Improved tracking of recent changes in CO2 and CH4 from NASA’s quasi-operational modeling systems: contributions to the U.S. GHG Center contributions and future observational needs [presentation]

S. Crowell (LumenUs Scientific, LLC)

14:32 – 14:40

Tu-32 – Top down estimates for GHG Center [presentation]

K. Bowman (JPL/Caltech)

14:40 – 14:48

Tu-33 – Progress towards operational GHG inventory verification system in the UK [presentation]

T. Gardiner (NPL)*

14:48 – 14:56

Tu-34 – A framework towards satellite-derived methane emissions product standards [presentation]

P. Green (NPL)*

14:56 – 14:04

Tu-35 – CAMS [presentation]

R. Engelen (ECMWF)*

14:04 – 15-12

Tu-36 –  Prototyping the USA GHG Center [presentation]

A. Kavvada (NASA HQ)*

15:12 – 15:30

Q&A (suggestions): What is the optimal role for CEOS in supporting top-down emissions reporting?  What are possible steps to increase engagement with Global Stock-take with satellite GHG products? 


Coffee/Tea  15:30 – 15:45  (hosted)

Remote Only Session     Chair: E. Choi (GHGSat)

15:45 – 16:40

6 min. each

Tu-38 – Future of OCO-2 MIP and CEOS top-down CO2 budget [presentation]

B. Byrne (JPL/Caltech)*

Tu-39 – Update on MethaneSat [presentation]

D. Crisp (Crisp Spectra LLC)*

Tu-40 – Greenhouse Gas and Air Quality Observations from the Arctic Observing Mission (AOM) [presentation]

R. Nassar (ECCC)*

Tu-41 – Outstanding issues in satellite-based CO2 and CH4 retrievals [presentation]

C. O’Dell (Colorado State)*

Tu-42 – TCCON status [presentation]

D. Wunch (U. Toronto)*

Tu-43 – Standards for methane point source detection and attribution [presentation]

D. Cusworth (Carbon Mapper)*

Tu-44 – Characterizing large methane and CO2 emissions from space with EMIT: U.S. Greenhouse Gas Center contributions and future needs [presentation]

A. Thorpe (JPL/Caltech)*

Tu-45 – Status and plans for EMIT mission and contributions to measurement of 100s of methane and carbon dioxide pint source emitters across six continents for the US GHG Center. [presentation]

R. Green (JPL/Caltech)*

Tu-46 – CEOS support of IMEO objective [presentation]

C. Randles (UNEP)*

16:40 – 17:00

Q&A: This session is heavily attended by facility scale / New Space observation talks. Suggestions for Q&A: What is needed for New Space missions to support science and policy with their data, e.g. ATBD, evaluation of reported products? How can CEOS best support L1 through L4 activities of New Space operations?  Is there such a thing as “no false positive” or should we move to a graded reporting system for emissions? 


Wrap-up      Chairs: Y. Meijer (ESA) and J. Worden (JPL/Caltech)

17:00 – 17:30

Tu-47 – Emerging issues / concerns from meeting. Define agenda for Friday meeting on international collaborations. 



17:30   Adjourn for the day

17:45 – 19:00   A discovery walk through the centre of Brussels (~4 km optional walk starting from the museum; the group is on their own for diner)

* Remote participation


Wednesday 25 October 2023



Chairs: S. Kondragunta (NOAA) and B. Veihelmann (ESA). Rapporteur:  M. Cheeseman (NOAA)

09:00 CEST

Introduction / Goals 

S. Kondragunta (NOAA),      B. Veihelmann (ESA)

Updates on Current Missions  

09:05 – 09:30

We-01 – TEMPO (Science Updates) [presentation]

X. Liu (SAO)*

09:30 – 09:45

We-02 – GEMS [presentation]

J. Yu (NIER),

J. Kim (Yonsei University)*

09:45 – 10:00

We-03 – Sentinel-5P TROPOMI [presentation]

C. Retscher (ESA)*

10:00 – 10:15

We-04 – MOPITT, CrIS, IASI [presentation] [presentation]

C. Clerbaux (LATMOS/IPSL), H. Worden (NCAR/ACOM)

Coffee/Tea  10:15 – 10:30  (hosted)

Updates on Future Missions  

10:30 – 10:40

We-05 – GeoXO [presentation]

S. Kondragunta (NOAA)

10:40 – 10:50

We-06 – Sentinel -4 and Sentinel-5 update from ESA [presentation]

B. Veihelmann (ESA)

10:50 – 11:00

We-07 – Sentinel-4 and Sentinel-5 update from EUMETSAT [presentation]

R. Lindstrot (EUMETSAT)

11:00 – 11:10

We-08 – SCISAT & Atmospheric Data Continuity and Improvement [presentation]

M. Dejmek (CSA)

11:10 – 11:20

We-09 – AOS [presentation]

P. Castellanos (NASA/GSFC)

11:20 – 11:30

We-10 – MAIA [presentation]

D. Diner (JPL/Caltech)*

11:30 – 11:40

We-11 – PACE [presentation]

A. Lyapustin (NASA/GSFC)*

11:40 – 11:50

We-12 – MEASMA – Middle East and Africa contribution to the GEO-RING [presentation]


Cal/Val Synergies

11:50 – 12:00

We-13 – Sentinel-5P TROPOMI [presentation]


12:00 – 12:10

We-14 – GEMS [presentation]

M. Kang (EWHA University)

12:10 – 12:20

We-15 – TEMPO [presentation]

J. Szykman (EPA)/L. Valin (EPA)/L. Judd (NASA)*

12:20 – 12:30

We-16 – Pandora PGN [presentation]

A. Cede (LuftBlick)*

12:30 – 12:40

We-17 – ASIA-AQ [presentation]

J. Crawford (NASA)*

12:40 – 12:50

We-18 – AEROMMA TEMPO validation update [presentation]

O. Cooper, B. McDonald* (NOAA)

12:50 – 13:00

We-19 – PEGASOS project [presentation]

R. Lutz (DLR)*

Lunch  13:00 – 14:00  (hosted)


14:00 – 14:20

We-20 – PM2.5 WP Recommendations and Roadmap 

B. Veihelmann (ESA) and     S. Kondragunta (NOAA)

14:20 – 14:40

We-21 – Use case 1: EPA AirNow [presentation]

B. Henderson (EPA)* and    P. Dickerson (EPA)*

14:40 – 15:00

We-22 – Use case 2: CAMS [presentation]

J. Flemming (ECMWF)

15:00 – 15:30

We-23 – Roadmap discussion                        

All (hybrid)

Coffee/Tea  15:30 – 15:45  (hosted)

TEMPO Aerosol Products

15:45 – 16:00

We-24 – NOAA Plans – Near Real Time AOD [presentation]

H. Zhang (NOAA)

16:00 – 16:15

We-25 – NOAA Plans – Near Real Time Aerosol Index/Aerosol Detection [presentation]

P. Ciren (NOAA)

16:15 – 16:45

We-26 – Panel discussion on Aerosol Layer Height [presentation] [presentation] [presentation] [presentation] [presentation] [presentation]

O. Torres (NASA)*, V. Natraj (JPL), J. Wang (U. Iowa)*, S. Kondragunta (NOAA), J. Kim (Yonsei)*, M. de Graaf (KNMI)

16:45 – 17:00

Wrap-up Wednesday session 

All (hybrid)



Logistics for the evening and beyond 

N. Kalb

17:00 Adjourn for the day


17:15 Guided tour of the museum of the Royal Belgian Institute of Natural Sciences

18:30 Diner in the museum co-hosted by BELSPO and BIRA-IASB

* Remote participation


Thursday 26 October 2023



Chairs: J.-C. Lambert (BIRA-IASB) and H. Tanimoto (NIES). Rapporteur: Ben Veihelmann (ESA)

Generic Cal/Val Activities 

09:00 – 09:20

Th-01 – CEOS Cal/Val for Atmospheric Composition [presentation]

J.-C. Lambert (BIRA-IASB)

09:20 – 09:35

Th-02 – CEOS-FRM Maturity Assessment Framework [presentation]

N. Fox (NPL)*

09:35 – 09:50

Th-03 – CEOS Cal/Val Portal [presentation]

P. Castracane (Rhea System for ESA/ESRIN)*

09:50 – 10:05

Th-04 – SI-Traceable Satellites (SITSat) [presentation]

M. Thankappan (Geoscience Australia)*

10:05 – 10:20

Th-05 – Validation protocol for cloud and aerosol profiles [presentation]

R. Koopman (ESA/ESTEC)*

10:20 – 10:30

Th-06 – GHG Cal/Val with outlook to Copernicus Contributing Missions [presentation]


Coffee/Tea  10:30 – 11:00  (hosted)

Level-1b Calibration Needs for Aerosol Retrievals   –   Chair S. Kondragunta (NOAA)

11:00 – 11:15

Th-07 – Imagers [presentation]

C. Cao (NOAA)*

11:15 – 11:30

Th-08 – Spectrometers [presentation]

D. Flittner (NASA)*

11:30 – 11:45

Th-09 – GSICS perspective [presentation]

L. Flynn (NOAA)*


Cal/Val Needs for the Constellations  

11:45 – 12:00

Th-10 – The CEOS Working Group on Calibration and Validation [presentation]

A. Kuze (JAXA)*

12:00 – 13:00

Th-11 – Panel review of Cal/Val needs for the AER, GEO-AQ and GHG constellations. Discussion on the way forward (suggestions): need for framework documents, Cal/Val protocols, Task Teams, match-up databases, field activities…? [presentation] [presentation]

General Q&A, wrap-up

S. Kondragunta (NOAA),   

J.-C. Lambert (BIRA-IASB),

B. Lefer (NASA),

H. Tanimoto (NIES),

B. Veihelmann (ESA),                 

J. Worden (JPL)

Lunch  13:00 – 14:00  (hosted)



Chairs: D. Loyola (DLR) and J.-C. Lambert (BIRA-IASB). Rapporteur: D. Hubert (BIRA-IASB)


Tropospheric Ozone Validation  

14:00 CEST

Introduction / Goals 

D. Loyola (DLR), J.-C. Lambert (BIRA-IASB)

14:05 – 14:25

Th-12 – Harmonization of tropospheric ozone data records from satellites [presentation]

A. Keppens (BIRA-IASB)

14:25 – 14:40

Th-13 – Homogenized ground-based column and profile ozone datasets from TOAR-II/HEGIFTOM: methods and station trends [presentation]

R. Van Malderen (RMIB)

14:40 – 14:55

Th-14 – Intercomparison and geophysical analysis of harmonised satellite tropospheric ozone CDRs [presentation]

D. Hubert (BIRA-IASB)

14:55 – 15:10

Th-15 – Southern Hemisphere Additional Ozonesondes (SHADOZ) Network, Data Quality Assurance, and Trends Updates [presentation]

R. Stauffer (NASA/GSFC)*

Tropospheric Ozone Products  

15:10 – 15:30

Th-16 – GOME-Type tropical tropospheric ozone and S5P-BASCOE tropospheric ozone [presentation]

K.-P. Heue (TUM/DLR)*

Coffee/Tea  15:30 – 15:45  (hosted)

15:45 – 16:00

Th-17 – NASA tropospheric ozone from EPIC, OMI, and OMPS satellite measurements: Current status and science results [presentation]

J. Ziemke (NASA/GSFC)*

16:00 – 16:15

Th-18 – TRopospheric Ozone and its Precursors from Earth System Sounding (TROPESS) [presentation]

K. Bowman (JPL/Caltech)

Tropospheric Ozone Trends  

16:15 – 16:30

Th-19 – An update on global tropospheric ozone trends and the impact of COVID-19 [presentation]


16:30 – 16:45

Th-20 – Challenges of detecting free tropospheric ozone trends in a sparsely sampled environment [presentation]

K.-L. Chang (NOAA CSL/CIRES)*, presented by O. Cooper

Updates on Limb Missions  

16:45 – 17:00

Th-21 – OMPS-LP [presentation]

N. Kramarova (NASA)*

17:00 – 17:15

Th-22 – OMS-L [presentation]


17:15 – 17:30

Th-23 – ALTIUS [presentation]

E. Dekemper (BIRA-IASB)

17:30 Adjourn for the day

* Remote participation


Friday 27 October 2023



Chairs: B. Lefer (NASA) and E. Knowland (NASA). Rapporteur: M. Cheeseman (NOAA)

Data Assimilation

08:55 CEST

Introduction / Goals 

B. Lefer (NASA)

09:00 – 09:20

Fr-01 – NASA Aerosol DA activities [presentation]

P. Castellanos (NASA/GSFC)

09:20 – 09:40

Fr-02 – NASA Composition Forecast System [presentation]

E. Knowland (NASA/GSFC)

09:40 – 10:00

Fr-03 – JCSDA Atmospheric Composition Activities Overview and Preparation for TEMPO DA [presentation]

J. Barré (JCSDA-UCAR)*

10:00 – 10:15

Fr-04 – CAMS DA [presentation]

A. Innes (ECMWF)*

10:15 – 10:30

Fr-05 – Multi-mOdel Multi-cOnstituent Chemical DA (MOMO-Chem) [presentation]

K. Miyazaki (JPL/Caltech)*

10:30 – 10:45

Fr-06 – Data assimilation of multispectral vs. separate TIR and SWIR products [presentation]

H. Worden (NCAR/ACOM)

Coffee/Tea  10:45 – 11:00  (hosted)

Link with Policy

11:00 – 11:15

Fr-07 – Can satellite data drive public policy for fine particulate pollution? [presentation]

S. Kondragunta and

M. Cheeseman (NOAA)

11:15 – 11:30

Fr-08 – Reducing climate forcing uncertainty [presentation]

R. Kahn (NASA/GSFC)*

11:30 – 11:45

Fr-09 – PACE NO2 retrievals [presentation]

J. Joiner (NASA/GSFC)*



Chairs: B. Lefer (NASA), H. Tanimoto (NIES), B. Veihelmann (ESA). Rapporteur: M. Cheeseman (NOAA)

11:45 – 12:30

Emerging AC-VC topics

All (hybrid)

12:30 – 13:00

Wrap-up and reflections on AC-VC activities and cooperation with WGCV ACSG 


Next AC-VC meeting

Concluding remarks

S. Kondragunta (NOAA), J.-C. Lambert (BIRA-IASB), B. Lefer (NASA), D. Loyola (DLR), H. Tanimoto (NIES), B. Veihelmann (ESA),  J. Worden (JPL)

13:00 Adjourn of AC-VC-19 / ACSG Joint Meeting 2023