CEOS WGCV 19th Plenary, Ottawa, Canada 1-3 May
ATSR Product Control Board Meeting, Southampton Oceanography Centre, 8 May
ATSR Core Group Meeting, SOC, 8 May
AATSR Science Advisory Group meeting, DEFRA, London, 9 May
2nd GHRSST Meeting, EORC, Tokyo, 13-16 May
CEOS WGCV 19th Plenary, Ottawa, Canada 1-3 May
The Australian report to this meeting can be found on the WGCV WWW site along with a Powerpoint presentation.
Outside the formal meetings discussions were held with Evert Attema of ESA about access to MERIS data fro validation purposes. Those people requiring such data should contact Evert or Jean-Paul Huot at jean-paul.huot@esa.int
Extended WGCV meeting notes can be found at the end of this report in Appendix A.
ATSR Product Control Board Meeting, Southampton Oceanography Centre, 8 May 2002
The main issue discussed at this meeting was the status of the ATSR-2 and AATSR algorithms. Some concern was expressed that the current derivation used atmospheric profiles generated by ECMWF models and not real radiosonde data. This problem was to be addressed by RAL as a matter of urgency.
Brian Maddison from RAL said that the Consolidated ABT data set for the entire ATSR-2 mission was now available. Ian Barton will get a full copy of this data set which will then be available for any Australian user. The data consist of global average BTs on a 17 km grid.
Notes from this meeting are available below as Appendix B.
ATSR Core Group Meeting, SOC, 8 May 2002
RAL were progressing well with the ATSR-2 data analysis which was almost complete. Data have not been analysed since 17 Jan 2001 due to problems with ERS-2 maintaining accurate yaw. Nadir only products from ATSR-2 are OK but other products are not good. A reprocessing of ATSR-1 would commence once the last outstanding data from ESA were obtained.
Notes from this meeting are included below as Appendix C.
AATSR Science Advisory Group meeting, DEFRA, London, 9 May 2002
Ian Barton gave an extended Powerpoint presentation of Australian Science and Validation plans for AATSR. Copies of this presentation are available on request.
Ian Barton also reported that CSIRO were looking at generating a press release about the installation of their new radiometer on the Perth Ferry.
DEFRA (UK Dept. of Environment) tabled a paper giving details of a re-structure of the AATSR science groups that would see the cessation of the PSP. Ian Barton stated that the PSP had some responsibilities which would not be covered under the new structure. Australian input to this paper would be submitted by the end of June.
Some discussion was held on the possibility of another mini-SAG in Australia – probably at Alice Springs to enable delegated to visit one of the CSIO Land Validation sites. This meeting would be held in the April-June period of 2003.
Notes of this meeting are available as Appendix D.
2nd GHRSST Meeting, EORC, Tokyo, 13-16 May 2002
This meeting was the high light of the overseas trip with substantial funding and support being made available for this project to go ahead.
ESA stated that M1 Euros were available over 2 years to support the GHRSST activity. A proposal would need to be submitted over the next three months. Craig Donlon would take responsibility for this.
The USA NAVO agency offered their facility as a global node for the GHRSST blended product. This was accepted by the meeting and the costs of setting this up were estimated. Remote Sensing Systems and the EORC/Japan were making good head way with the development of methods for the blending of the different data sets and some initial methods and guidelines were expected to be available by the end of the year.
Extended notes from this meeting are available below as Appendix E.
Ian Barton, CMR, CSIRO.
17 June 2002.
APPENDIX A
MEETING NOTES FOR WGCV-19
DAY 1, Wednesday May 1, 2002
Attendees:
Yves-Louis Desnos ESA/ESRIN (Chair)
Marie-Claire Robinson Secretariat
Evert Attema ESA/ESTEC
Michael Rast ESA/ESTEC – Chair IVOS SG
Dave Halpern NASA-JPL
Jing-Shan Jiang CSSAR Acad. Sinica - National Microwave Remote Sensing Laboratory.
He-Guang Liu CSSAR Acad. Sinica
Huang Xiaoxian SITP
Mike Weinreb NOAA/NESDIS
Ian Dowman Uni College, London
Gordon Keyte DERA (BNSC)
Carol Johnson NIST
Nigel Fox NPL U.K.
Karl Staenz CCRS
Manuel Martin-Neira ESA - Chair Microwave SG
Jeff Privette NASA GSFC - Chair LPV SG
Ernest Hilsenrath NASA - Chair AC SG
Phil Teillet CCRS Canada
Ian Barton CSIRO Australia
Jan-Peter Muller Uni College, London - Chair TM SG
Dave Meyer EROS Data Center, USGS
John Dwyer EROS Data Center, USGS
Satish Srivastava CSA (Radarsat)
Hassan Ouiadrari SSAI, USA
Plus sundry CCRS personnel.
OPENING ADDRESS - Dr Robert Ryerson, DG of CCRS
LOGISTICS Lunch: Orangerie Room
AGENDA Only a few changes: Chair’s report to/from Plenary
Feedback on IGOS at Plenary
CHAIR’S REPORT – Yves-Louis Desnos
Introduction: WGCV established 1984 Now 6 sub-groups. Meet every 9 months
WGCV brochure and bookmarks prepared.
Work-plan approved by Plenary
ISPRS Taskforce – drawing up a list of standards for geometric and radiometric cal.
Approved by CEOS Plenary
Miami2001 reported to Plenary -
Two topical workshops. LPV LAI and GOFC fire-scars w/s
Plan to set up with WGISS some CEOS LPV core sites. A rationale developed.
SAR s/g meeting in Japan. Proceedings produced. Recommendation to Plenary on INSAR.
Second recommendation on accurate calibration for instruments used in global carbon fluxes in support of Kyoto Protocol.
Microwave sensors sub-group. First meeting in Boulder 11/200l
TM sub-group met under new Chair.
CEOS Plenary stressed the importance of cal/val in the integration of satellite and ground observations of ozone.
Plenary endorsed the formation of the Atmospheric Chemistry Sub-group.
UPDATE FROM WGCV SECRETARIAT - Marie-Claire Robinson
A WGCV brochure has been produced and distributed to WGCV#19 participants produced
WWW site is now kept up to date. Traffic monitor shows use is high.
WGCV Plenary attendance statistics have been produced and circulated.
Membership of WGCV. List updated – and will be maintained.
WGCV Survey draft questionnaire. Need to fill in during the meeting. (Done).
All presentations from this meeting will be on the WWW site.
UPDATE ON CEOS/IGOS PLENARIES - Yves-Louis Desnos
Two new agencies approved at CEOS Plenary – KARI and GISTDA
EOS Strategy Review focussed on IGOS-P. New plan will be put forward at CEOS Plenary 2002.
WGISS Chair now CCRS.
Preparation for CEOS contribution to WWSD is now being developed
IGOS themes: Oceans (GODAE) is ongoing. IGACO ongoing. Global water cycle ongoing
Coral reefs endorsed as first part of a wider theme on coastal regions.
Hazards – to be discussed and considered at the next CEOS Plenary.
IGOS has two co-chairs, one nominated by CEOS and the other by IGOS Partners
CEOS Plenary agenda and meetings tabled. 19-22 November in Frascati. CEOS Plenary 20-21 (am) Nov. A WSSD meeting 21 pm. CEOS SEC meetings at start and end (19/11 am, 22/11 am). Education and training 19/11 pm.
ACTION ITEMS FROM WGCV-18
17-03 Open – transfer to 19-01. New deadline of November 2002
17-10 Still open. Pass to Shimada and SAR s/g. Convert to AI 19-xx.
17-11 Closed.
18-01 Closed
18-02 Closed
18-03 Closed - Will discuss after IVOS presentation.
18-04 Closed
18-05 Closed - Nobody will attend.
18-06 Closed
18-07 Closed
18-08 Closed - Details of inter-action with WGISS will be covered during this meeting.
18-09 Closed - List of definitions passed to Ray-Theon. Are these necessary??? Unnecessary duplication.
18-10 Closed -
18-11 Closed -
18-12 Closed -
18-13 Closed -
18-14 Closed -
18-15 Closed -
Atmospheric Chemistry (ACSG) REPORT - Ernest Hilsenrath (NASA GSFC)
First meeting just been held in Ottawa. Background of sub-group. How it came about. IGOS and long-term ozone measurements. Integrating ground-based and satellite measurements (WMO#140). Theme : Long-term continuity of key observations. One chapter in report on cal/val.
Participation and Membership was listed
Goals and activities were described. All on WWW site.
Presented a list of presentations to the SG meeting.
Listed specific objectives of the SG.
Looking for a co-chair to ensure continuity for the work-plan which goes out to 2015!!!
Need to generate a recommendation for CEOS 2002 Plenary on support for ground validation networks.
IVOS REPORT - Michael Rast (ESA/ESTEC)
Need members from NOAA, NASA, NIST, CSIRO, China EUMETSAT,DLR, and ISRO
Had a meeting on 6 Feb. 2002. First meeting for 3 years.
Partly a joint meeting with MERIS calibration team.
IVOS ToRs were listed. Past meetings. Need to re-establish membership. Cal/val objectives for ENVISAT instruments. Validation workshop 9 months after launch. Need another IVOS meeting in October. IOCCG as a component of IVOS??
Inter-comparison of different diffusing plates
Four recommendations: (i)Use Thullier for solar spectrum, (ii)Test sites, (iii)Protocols, (iv)Compare diffusing plates. NOTE: These were reduced to two recommendations – one on Thullier, and the secoond on diffusing plates inter-comparison.
LPV SG REPORT - Jeff Privette
2002 Update: Introduction of what LPV is trying to achieve. Mission statement. Problems with membership.
MICROWAVE SENSORS SG - Manuel Martin-Neira
A new chair of the microwave sensors group following Elena Zobl. A meeting in Boulder. Next meeting in Barcelona, October 2002. Plan to always meet in tandem with another meeting.
Interested in multi-use cal/val sites.
Use sun imaging test to look at performance of antennae. Quadrature errors 2 to 3 K. Phase retrieval 15 to 18 degrees in angle.
SAR Calibration SG – Robert Hawkins (CCRS) & Gordon Keyte (DERA, UK) (for Masanobu Shimada)
Proceedings of April 2001 meeting in NASDA included in meeting package. IEEE Proceedings of Geosciences and Remote Sensing special edition on SAR cal/val is a valuable document.
Showed mosaics of different continents as well as world heritage areas. Keyte described objectives of the upcoming SAR workshop – would be very similar to previous meetings. 23-26 Sept UK London BNSC/DTI Conference Centre. Details on CEOS WGCV WWW site.
TM SG - Jan-Peter Muller
Review of Mission Statement. Also some results from INSAR and IKONOS. Look at both global and regional scales. Recent meeting held in Banff at the ISPRS meeting in July 2001.
END OF DAY 1
DAY 2 Thursday 2 May
Discussion on WGCV Issues:
Yves-Louis Desnos presented some ideas on how WGCV should have input into the CEOS Review Team
A list of discussion points was displayed and agencies asked for comments.
ESA. WGs are the backbone of CEOS and thus important. CEOS Plenary should take more note of WG activities – provide more pressure for agencies to support WG activities.
China: China takes Plenary soon. Not certain how interaction between Plenary and WGs can be improved.
NASA: This should not be a problem. Plenary should look at how they can improve relationships. JPL: Should Sub-groups be aligned along parameters and not microwave spectrum.
UK: Difficult points. Need to demonstrate a tangible benefit to the end user.
Australia: WGs no longer are the backbone of CEOS – this role may now have been taken over by the IGOS-P themes. WGs need more interaction with CEOS Secretariat – once a year at Plenary is not enough. The possibility of a CEOS secretariat member attending WG plenary meetings should occur. This would give a better exposure of WGs in CEOS. This would also increase the likelihood of extra support from CEOS member institutes.
CANADA: SAR subgroup serves the users well.
JPL: Halpern suggests that WGCV has a high level paper at the next COSPAR conference in Houston. This would than provide information about WGCV to a large portion of the user community.
A questionnaire was supplied to provide feedback to the WGCV secretariat (see above – Done).
ENVISAT – first results and calibration. - Evert Attema
A presentation on current status of Envisat. Workshop on the results of the commissioning phase to be held in Frascati during December 10-13. Showed first MERIS image.
RADARSAT CALIBRATION - Satish Srivastava
Use four remote transponders.
WGTE REPORT – Christine Hutton
Mukund Rao is Chair – Sergio Camacho is Co-Chair. First meet in India 2000. Involved with outreach in third-world countries.
WGISS OVERVIEW - Terry Fisher
Three parts: Organisation, activities in 2001, and the future.
JOINT WTF FACILITY – Yves-Louis and Jeff Privette
Evert Attema expressed concerns about commitment of agencies to the WTF. A better definition of what is involved is required. A small group will formulate a list of needs for discussion tomorrow.
ISPRS/WGCV geometric/radiometric standards – Ian Dowman
Sub-groups to nominate members to participate.
- Carol Johnson
International standards. A list of relevant documents will be placed on the WGCV WWW site.
NPP and NPOESS – Hassan Ouaidrari
Cal and Val for future projects. NPOESS is a merged system of NOAA and DMSP
END OF DAY 2
DAY 3 Friday 3rd May
WORK PLAN 2002-2004 - Yves-Louis Desnos
Changes required for inclusion of Atmospheric Chemistry SG and its objectives etc.
Joint CEOS WGCV and ISPRS activities should also be included.
New work plan will be presented to the next CEOS Plenary in Frascati, November 2002.
WTF should also be included in the Plan following the latest discussions that are imminent.
Action Item on WGCV members to provide input to the Work Plan by September.
WTF REVISITED - Yves-Louis Desnos
WGCV will form a drafting team to prepare a project plan. USGS and NASA will contribute to the initial phase. WGCV will identify an initial “champion user” to give a focussed start to the project. These two will develop a new plan. Sub-group chairs will appoint members of their sub-group to assist with the drafting effort.
WGCV Chair will negotiate with WGISS and report to CEOS Plenary. Australia may be involved when the WTF is better established.
Jeff Privette gave a more detailed description of a possible starting format for the new WTF.
COUNTRY REPORTS
Australia (Ian Barton): Report on the WWW site. Also included a PPT presentation on the un-manned helicopter characterisation of the Australian land validation sites.
China (Jing-Shan Jiang): Many remote sensing applications in many fields. Have developed and launched more than 50 satellites. FY – meteorological, HY – oceanographic, ZY – earth resources.
SJ - research, DFH - telecommunications. HY launch in May. M3RS to be launched at end of year. 3 microwave instruments (ALT, Microwave, ???). China to send a man into space next year.
Future programs. Plan a SAR Sat. FY-3 a polar orbiter, FY-4 a geo.
ESA (Evert Attema): Brief presentation on future missions. Report will be on the WWW site.
NIST (Carol Johnson): NIST is an agency in the Dept. of Commerce. Funding from NASA/NOAA etc. make it possible for NIST to work with EO satellite cal/val.
NOAA (Mike Weinreb): Cal/Val at NOAA/NESDIS. Listed POES and GOES instruments. Used for meteorology.
NASA (Ernest Hilsenrath): Short presentation for NASA – not planned. AQUA launch tomorrow.
NASA-JPL (Dave Halpern): A call for an inter-comparison of surface wind speed from satellite instruments. Evert Attema stated that this had already been done by ESA/Europe. He would supply Halpern with details.
NPL (Nigel Fox): EUROMET – Coordination of standards labs in Europe. Calibrated GERB-3. TRUTHS proposal to ESA explorer call. Trying to develop a new BB to suit space applications. Accuracy to 1mK. Improving transfer standards.
CHRIS (Proba) is flying – was calibrated at NPL.
UK (Gordon Keyte): UK civil program for space EO. Listed key national activities. Possible development of small satellites.
USGS (Dave Meyers): IVOS-related issues at EROS Data Center. LANDSAT-5 getting old.
RECOMMENDATIONS:
1. From MWSG (and others): for sustained support for ground stations.
2. From IVOS: for instrument teams to publicise which solar spectrum is used, and to move towards adopting the Thullier spectrum which is given in a paper submitted to “Solar Physics”.
3. For space agencies to support an inter-comparison of materials used on satellites as solar diffusers.
NEXT MEETING: A tentative offer from Australia to host the 20th Plenary of the WGCV was announced. Barton would confirm this offer by the end of May. Dates preferred were mid-February 2003.
MEETING CLOSED at 2:00 pm.
APPENDIX B
PCB Meeting, SOC, UK. 8th May 2002
Notes:
AGENDA ITEM NUMBER
1. Intro and welcome
David Llewellyn-Jones welcomed everybody. Said that it was some time since last meeting and we had much to cover.
2. Agree agenda
Agenda agreed with the addition of - the sun-glint problem -put in AOB and differences between 4 and 6 channel retrievals.
3. Minutes of previous meeting approved
Action Items – all out of date. Assume all done except -
WWW site needs revisiting.
BT order in algorithms as in SADIST.
4. Review of cloud clearing work.
Cloud studies should not be in core activities except for cloud clearing.
Chris Mutlow showed results on cloud clearing work. In current version of SADIST Version 340.
Still problems with Ci at night. Have developed a manual test – but can’t automate it. Possibly look at derived SST values using simple pairs of channels, nadir and forward. WWW site should refer to Albin’s paper – and ordering of the cloud clearing algorithms.
5. Update of SST algorithm work.
AATSR pre-launch coefficients use 1995 profile set. Andrew uses ECMWF profiles. Some concern expressed and it was suggested that using a radiosonde data set would be better.
6. Traceability – Andrew Birks
Andrew asked to trace the heritage of current algorithms. Working on algorithm paper in the background. Original algorithm has 10 across-track bands. The CJM developed the aerosol robust algorithms. New algorithms had 38 cross-track bands Newest set of coefficients use V322 of latest RAL code.
Coefficient generation. i.) assemble profile set.. ii.) Generate 6 BTs. iii.) Derive regression coefficients. Noise: 0.01 K used for ABT. For gridded SST use 0.02 to 0.06 K depending on channel. Phil Watts emissivity used in forward views. ECMWF profiles come with winds etc.
Tropospheric aerosol. Surface visibility = 27 km @ 84% humidity. CO2 now use 364 ppm. For V310
V322 used for ATSR-2 364 ppm, Watts emissivity parameterisation.
Improvements possible: Use HITRAN2000. Use Clough et al CKD 2.4.1 continuum. ?? improvements in tropospheric aerosol.
Current SADIST uses RADGEN to derive BTs for swath centre and edge for both nadir and forward views. Then interpolates for 38 cross-track bands.
7. Status of CABT product
Consolidated ABT. What is available. Entire CABT data set for ATSR-2 mission is available. Resides on single hard disc that can be accessed via ftp. Derived using version 310. ABTs from SADIST 321.
Total data set is 180 GB
No processing since Jan 2001. Yaw problems etc.
8. General discussion
8.1. Cloud clearance over land. A subset of tests over ocean. Four used. Different thresholds etc. Fred Prata’s ABT suggests the use of some CLAVAR tests over land.
8.2. Atmospheric correction over land. Try to develop global techniques. Use Aeronet stations. To develop a software package available to third parties. Keynote talk in Boulder June 10-12.
9. AOB
Sunglint – paper given by Andrew Birks.
4Ch-Ch 6 SST differences . Withheld to ACG this afternoon.
10 Next meeting place and time.
Probably in six months time – but not decided. May be a good idea to have at the same time as the ACG (as today).
11 Close At 1310.
ACTIONS.
1. IJB to mention Peter North, Swansea Uni to Fred Prata. He is interested in using land sites to develop atmospheric correction.
2. CABT data set is 180 GB for the entire ATSR-2 mission. Brian Maddison can supply on DLT tapes. Contact Brian when I return. Data also available via ftp.
APPENDIX C.
27th ATSR Core Group Meeting, SOC, UK. 8th May 2002
AGENDA ITEM
1. Intro and welcome
David Llewellyn-Jones welcomed everybody. Some apologies noted.
2. Agree agenda
Agenda agreed
3. Previous meetings. Minutes of 25th and 26th meetings approved.
Action Items:
3.1. ESRIN has funds to operate ERS-2 to 2004. Keep data going till launch of METOP.
3.2. DEFRA proposals for AATSR review groups and associated bodies. A paper was tabled which will need some input from Australia. Will discuss further at DEFRA tomorrow.
Comments to Simon Brown (DEFRA) and copy to DLJ
3.3. Done: PODAAC data sets available. No feedback
3.4. Done: Andrew Birks explained
3.5. Done: Will try and keep the WWW site up to date.
3.6. Done: A presentation made at the PCB meeting in the morning. A paper is nearing completion.
3.7. To be done later in meeting – or will be circulated.
3.8. Reports are available on the ATSR WWW page.
3.9. Done
3.10. Search criteria. Could these be put on the WWW.
3.11. Data handling. In hand
3.12. Contingency fund. In hand.
3.13. Table of Contents for final reports. Steve Wilson said that there is no standard, but a draft set of headings was supplied.
3.14. ACG members to report on WWW site.
3.15. Report on Validation. Skin depth report by Lisa. Tim N. to report on Indian Ocean work.
Some issues here. NERC and RAL to work towards a solution soon and report to Steven Wilson.
3.16. On-going.
3.17. IDL licenses will be required – at a cost. This to go from UBT archive to GBT products.
3.18. Channel spectra will not be included in paper but on the WWW site.
3.19. On going
3.20. Done
3.21. Will not be done. Would have needed modifications to SADIST – and this action would have increased delays into program.
3.22. Visible calibration information is on WWW site. Thermal calibration data are in the data files.
3.23. SADIST will be modified to handle this problem
3.24. Paper tabled with a list of milestones.
3.25. Done.
3.26. This action is in hand. Tests are currently in progress.
4. ATSR, AATSR status
AATSR: going well. Some images available on the WWW.
ATSR-2: A geo-location problem.
5. ATSR/AATSR archiving – Level 1 archive for ATSR
Archiving and processing information was tabled.
There is a current funding problem within NERC. Steven Wilson is attending to the problem. Currently some products are affected.
Core Group approval required for some milestones in June/July
6. ESA Status Report
ATSR-2. The attitude problem remains. Yaw steering is no good. Yaw varies between +/- 2 degrees. After recent turn on there was a 6 degree problem. Tromso station working well.
7. RAL Progress Report
Instruments statuses are nominal. RAL has WWW access numbers. Summary from Tim Nightingale. – 2 potential data points data obtained from Peter Minnett. Archiving and processing information has been tabled. Data production for Phil Watts and Chris Merchant. Data status – Table tabled for ATSR-1 and ATSR-2.
8. Validation
Tim Nightingal (RAL) has obtained funding for a six-week CIPIO cruise for AATSR validation.
9. ACG Closed Session - Discussion and feedback to RAL
10. AOB Nil
11. Date of next meeting Thursday 5 September
APPENDIX D.
AATSR Science Advisory Group, DEFRA, London, 9th May 2002 at 1030
Meeting notes:
1. Apologies from several members.
In attendance:
David Llewellyn-Jones (Chair), University of Leicester
Martin Wooster , University of London
Lisa Horrocks, Met Office
Chris Mutlow, RAL
Hannah Tait, ESA/ESRIN
Marianne Edwards (Secretary) University of Leicester
John Remedios, University of Leicester
Simon Brown, VEGA
Ian Barton, CSIRO
Ian Robinson, University of Southampton.
2. AGENDA agreed
3. Minutes of 16th SAG accepted
Action items:
3.1 Mike Steven to produce fractional vegetation cover. Not done. Close the action. IJB suggested that AJP may be interested. Mike Steven would like to be removed from the SAG. An action item to revisit this matter and to perhaps ask Fred for a contribution.
3.2 Mike Steven input to validation list. Again not done – and closed.
3.3 New list of names for possible new SAG members
3.4 IJB to remind BoM that the Meteo product would be available after the commissioning phase. See if they can provide feedback to ESRIN on the Meteo product. Would be seen as validation. IJB to contact BoM
3.5 Will be done in next few weeks.
3.6 Done
3.7 Ongoing
3.8 ? subscription service. Something being set up for GODAE. At end of August ESRIN will take over and set up the automatic subscription service. Deadline of July for new subscriptions. DDS sites should perhaps be supplied with data through the subscription service. Ongoing.
3.9 SAG members to provide info on possible toolbox packages for AATSR data
3.10 MCE to look for other cruises following the SCIPIO (Charles Darwin). Ongoing.
3.11 MCE to contact Mike Rast to confirm that there are no MRIS validation opportunities for joint validation activities.
3.12 Closed
3.13 Closed
4. SODAP - Switch On and Data Acquisition Phase
09/3 switched on
17/3 various rests
26/3 initial cool-down
08/4 second cool-down
15/4 AATSR went into standby
16/4 Restarted – after several unsuccessful attempts. Needed a full re-start.
Current schedule on track. Validation data collected in June will be useful.
5. Report on ESA ground segment
Hannah: All the data from all instruments are being archived. Some distribution problems. RAL are receiving 5-8 orbits of level 0 data per day. FTP links will be set up next and then general distribution.
Still a few weeks from sorting all this out. Schedule for validation is unchanged.
Initially Artemis will be used to provide 14 orbits of AATSR data in NRT. A fallback is to receive data at Svarlbard.
6. Validation
6.1 Recent and current
MCE gave a general report on AATSR validation plans.
6.2 ISAR report. ISAR has been on the Southampton ferry ValdeLoire since 29 April. Another 2 ISARs have been built – one for BNL and the other for SOC.
7. Australian activities.
Report on Australian plans for validation. Also gave a short report on the water vapour product.
8. User interface issues
8.1 Hannah: Product handbook will be a pdf version. May produce a handbook for the September validation workshop.
8.2 Marianne: Update on AATSR/MERIS toolbox. Beta version to be delivered in June. Completed by end of September.
9. New products
RAL working on new module to provide LST based on Fred’s ATBD. Test focussed on the LST itself. Reads in a heap of LUTs. Testing picked up 3 problems. One in LUT indexing, one in analysis and the third a typo which was discovered. These have all been fixed and another test scheduled for next week.
12. Future of SAG (brought forward)
Paper put forward by Simon Brown. Suggestion is to disband the PSP after its post-commissioning meeting. The CORE group remain separate from DEFRA. SAG continued with an enhanced role. Informal contract progress type meetings (FOS/PI/MISC) continue as at present. Membership of SAG needs to be addressed.
CSIRO to provide comments by the end of June.
10. Science user support
How do scientists get science support. The handbook obviously, but there should be other avenues. One idea is an AATSR WWW site. Plan to install one at Leicester with links to the RAL ATSR site.
A plan to hold reasonably large science meetings at extended intervals.
11. Publicity and promotion
Two large posters were displayed. Used at a DEFRA press conference. CSIRO would like to do a story on the Perth validation. An image of the area would be required before they can go ahead. Images are available at http://www.leos.le.ac.uk/home/aatsr
13. AOB
Simon Brown returns to his substantive position at the Met Office. Cathy Johnson will return.
14. Review of Action Items
15. Next SAG
Pencil in a date – perhaps back-to-back with the final PSP meeting in October time frame.
Ian Barton mentioned the possibility of another mini-SAG in Australia during the time frame April-June, 2003. Location would most likely be Alice Springs – close to one of the Australian land validation sites.
16. Close.
APPENDIX E
GHRSST Second Meeting – EORC/NASDA
13-16 May 2002
DAY 1, 13 May 2002 - Science meeting.
Ian Barton CSIRO
Gary Wick NOAA
Ken Casey NOAA/NESDIS
Pierre LeBorgne Meteo-France
Ed Armstrong JPL
Jim Cummings NRL Monterey
Nick Rayner UK Met Office
Alice Stuart-Menteth SOC
Ian Robinson SOC
Chelle Gentemann
Bill Rossow WCRP NASA
Lei Guan Qingdao/NASDA
7 * EORC:
Hiroshi Kawamura - Co-Chair
Craig Donlon - Co-Chair
Olivier Arino Esa/ESRIN (From Tuesday)
Opening comments – Craig Donlon
Review of Agenda - All OK
Each Theme leader to talk about their theme.
Theme I. Ian Robinson
The DDD – Distributed Dynamic Database. Specification and delivery mechanism of SST products required by different users and diverse applications.
Two modules - (i) UIS – a portal for the project. A WWW site, networks, workshops,
data catalogues. Links to other themes
- (ii) DDD – Data transport.
Discussion: What data sets are available now? Four types. (a) AVHRR-type, (b) GEOs, (c) Research – ATSR,GLI, MODIS etc., (d) Microwave.
Work packages need better definition.
Theme II. Craig Donlon - The DDS – Diagnostic Data Sets
Characterisation and identification of differences between SST fields derived from existing satellite and in situ data sources. Details in the “Strategy and Implementation Plan” pp 27-31.
Need an on-line data catalogue. A pilot system has been developed in JRC. Will be described on Tuesday.
Theme III. Gary Wick - Targeted research and development for SST data integration.
Theme IV. Pierre Le Borgne.
Generation of improved, multi-sensor, demonstration products through integration and assimilation.
Is there a need for merging products? How will it be done? And by whom? Some problems to solve first – heterogeneity of SST data, spatial resolution, and quality of the different data sources. Analysing SST data. Merging has to be done. Needs SST data in time, a homogeneous SST definition, and well-defined quality information. Probably need quantitative quality values. ?? methodologies tested?
Use of microwave data with > 10 km resolution – how to do it??
DAY 2, 14 May 2002
Welcome. Hiroshi Kawamura
Opening of Workshop. Mr Matsuura. Displayed poster about TRMM. This autumn in Japan is anomalous – rainy season may come early. ADEOS-II launch in November.
ENVISAT launch in March. AQUA launched May 4. Includes AMSR-E.
Summary of Science Team Meeting from yesterday. - Craig Donlon
Theme I. Need to more properly specify the work packages.
Table of current capability required
Theme II. DDS poorly specified. Number of sites should be reduced. Collocate with
interesting areas. Possibility of grading sites.
Theme III. Difference maps of MW and IR due to diurnal stratification.
“Analysed” and not “merged” products. Error estimates required.
Theme IV. Clear distinction between analysed and merged.
Already a daily 4-km GAC AVHRR product available from NAVO that we
may have something to start with.
Outline of Objectives, Craig Donlon.
Overview of the Strategy and Implementation Plan given. Re-iterated the GHRSST-PP remit. SST Bulk is temperature at 5 m. Displayed timetable. Outstanding works. Better networking. Formalisation of commitments. National and international funding mechanisms. Taking R&D to products. DDS real-time population. User segment networking. Listed outcomes of GHRSST project. Possible release of reports.
SESSION 1: The GHRSST demonstration product definitions including error and confidence data.
Kawamura et al. - New generation SST Version 1.0
Solar radiation estimates (VISSR)
VISSR-derived SST. Swoed monthly averaged amplitude of diurnal variation using VISSR SST estimates. Compared with model estimates using QSCAT data for winds. Showed SST merging strategy – same as yesterday!
AEOS-II SST produced using GLI, and AMSR on same platform. AMSR gives water vapour, wind, and SST.
Showed structure of government agencies in Japan. Fisheries agency has joined the other groups interested in SST.
Japan has SST products which are released to users. (Partners are JMA, NASDA, Tohoku Uni., JAMSTEC, FRC).
One product is GMS insolation over the oceans around Japan.
Yoshimi Kawai - Treatment of diurnal variations
Defined terms used – daily min, max, and average daily SST.
Showed plot of daily mean SST minus daily minimum.
How do we treat this problem? Gave equation to estimate the diurnal SST rise.
Corrected daily SST is taken as the minimum.
Lei Guan and Kawamura. Merging SSTs
Use NOAA AVHRR, GMS, and TRMM SSTs, winds and microwave.
SST data availability is different in different regions. Microwave SST is more readily available. Used an analytic function – see paper provided. Usea spatial and tempeoral window 3days\ys and 100 km.
Use buoy data to check Standard deviation of 0.95 K.
Kawamura and Hosoda – Error analysis of the new generation SST. Problems arise due to the phasing of the TRMM orbit – not sun synchronous.
Chelle Gentemann – Blended MW-IR data algorithms. Use TMI on TRMM and AVHRR.
Project ongoing at RSS – Expect increased accuracy – better cloud removal. Better coverage, operational considerations. Generic algorithms. Regress IR BTs to microwave data. Include WV in the equation.
TRMM height increased which caused problems with SST retrieval. Have developed new techniques to cope with this and then found minor errors in attitude with the earlier results. These can be removed so SST products are now better. Errors around 0.55 K.
Has taken Reynolds and differenced with TRMM SST. Gives diurnal measurements and can be compared with wind speeds.
Pierre Le Borgne – Confidence levels and associated error characteristics in the OS&I SAF SST retrievals.
Definition – sub-skin SST. North Atlantic region (NAR) AVHRR. LML (larger region) GOES-E +MSG. MAP from LML + NAR merging.
Alice Stuart-Menteth - Why the GHRSST should worry about diurnal stratification.
Measurements will be from different depths and times. Looking at seasonal statistics. Use Pathfinder data. 10 years of data. Looked at monthly means of day-night differences. Also looked at the differences between different years. Results agree well with those predicted using Kawamura and Kawai’s 2000 model.
SESSION 2. PART I. Access to satellite data streams
Ian Robinson – Is there a need for a Dynamic Distributed Dataset (DDD)?
SST retrieval is in need of further work in 2002-2006.
Misako Kachi and Hiroshi Murakami – Implementation plan for the ADEOS-II/AQUA SST generation. ADEOS –II will have AMS, GLI, SeaWinds, AMSU-A.
Described GLI data streams, data analysis, and distribution.
Gary Wick – Skin SST from NPOESS VIIRS. (Visible and Infrared Imager Radiometer Suite). Skin SST from atmospheric simulations with Modtran 3.7 and 300 profiles. Use a dual split window.
Ken Casey - Towards the development of a global 4-km AVHRR SST database.
Analysing old data – but looking forward as well. Working with Ed Kearns at Miami.
SESSION 2. PART II. Access to in situ data streams
Satoshi Sato – Data mining for salinity.
Craig Donlon - Operational validation of satellite data using in situ radiometers. Described the ISAR-5 radiometer – its deployment and data analysis.
Ian Barton – The Miami2001 in situ radiometer inter-calibration exercise and beyond.
END OF DAY 2.
DAYS 3-4, 15-16 May 2002
SESSION 3. Part I. To review, prioritise, and formulate the GHRSST-PP Implementation Plan.
Craig Donlon. Overview.
A Preparation Phase (2002-2003)
Implementation of basic DDD, DDS,UIS.
Population of DDD and DDS
Testing of data delivery and exchange
Version 1.0 SDI tools and methods
Development of Version 1.0 RT and OfL SST
Basic R&D algorithms.
A Demonstration Phase (2003-2005)
Refinement
Production
Delivery
Validation
Evaluation
Work Package Tables - need to be completed. Listed in Implementation Plan.
Andy Harris – The role of NOAA/NESDIS in GHRSST-PP
NOAA serves a number of different users.
Use radiative transfer models to develop algorithm coefficients.
Hiroshi Kawamura – An implementation plan for global new generation SST data products. Daily merging is under way at Tohoku University using SST (AVHRR & GMS) and solar radiation. Can be expanded to incorporate microwave data and other sources to give a global product.
Olivier Arino – MEDSPIRATION: an ESA initiative in response to GHRSST-PP. Provided a status report on AATSR, data policy, and validation plans. Apply to ESA for data access. ESA can contribute to GHRSST in several ways. MEDSPIRATION, CEOSA WGISS OTF, and others. Also setting up a server for AVHRR and other data.
Ocean Testing Facility (OTF). Focus on North Atlantic. OTF is a significant resource for GHRSST.
ESA SST Project. ESA needs User Commitment and scope in a proposal and could provide funding up to 1 MEuro over 2 years.
Toshiyuki Sakurai – Plan of new SST implementation.
Gary Wick - SST merging strategies. Listed the extra information needed with each data set. Looked at the biases introduced with time of day, view angle, SST, water vapour, latitude, etc.
SESSION 3. Part II. Formalise relationship and commitments to GODAE and other associated projects.
Bill Rossow – The WCRP GEWEX projects of most relevance. Surface Radiation Budget, Precip project, and Sea Flux activity.
Nick Rayner and Dick Reynolds – Climate Requirements for SST data sets: The AOPC/OOPC SST and Sea Ice WG.
150 years of data. Can be used but need care. Used in models and in re-analyses. Plan to build on COADS. Number of recommendations from the January Boulder meeting. Re-examine biases. Digitise meta-data. Use Geos for diurnal cycle, and maintain links with GHRSST. Pathfinder should include large lakes. Suggest that different cloud clearing schemes should be compared. Need to compare GHRSST products against other analyses. Need DDSs over large lakes.
Naoto Matsuura - ADEOS-II and AQUA AMSR-E. Gave details of the GLI and AMSR.
SESSION 3. Part III. - To define and formalise the GHRSST demonstration infrastructure.
Kawamura and Kawasaki - NASDA Server for GHRSST.
Jim Cummings - The status of the VOD Hub and DODS/LAS and the US-GODAE Monterey Server and the GHRSST.
Craig Donlon and Simon Pinnock – The GHRSST-PP DDS: Initial experience.
Linux, 200 GB RAID array, DLT, DAT-4 tape drive, Exabyte jukebox, HDF file format, WWW metadata repository, DODS server for data access. DDS uses ATSR, AVHRR, TMI, ship data, and buoy data.
Ed Armstrong – The JPL PO.DAAC.
SESSION 3. Part IV. Identify metrics for the GHRSST-PP. Run by Andy Harris.
Funding sources:
ESA stated that M1 Euros were available over 2 years to support the GHRSST activity. A proposal would need to be submitted over the next three months. Craig Donlon would take responsibility for this.
The USA NAVO agency offered their facility as a global node for the GHRSST blended product. This was accepted by the meeting and the costs of setting this up were estimated. Remote Sensing Systems and the EORC/Japan were making good head way with the development of methods for the blending of the different data sets and some initial methods and guidelines were expected to be available by the end of the year.
The Meeting ended at 5:00 pm on Thursday 16 May.
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