ISSI 2010 Team on the Critical Assessment and Standardized Reporting
of Vertical Filtering and Error Propagation
in the Data Processing Algorithms of the NDACC Lidars

 

Hosted by: the International Space Science Institute, Bern, Switzerland

 

First Meeting: 29 November-3 December 2010

Scope of the First Meeting

The first meeting will consist of a review and critical assessment of the methodologies used in the NDACC lidar analysis algorithms (specifically, the filtering schemes, and the definition, quantification, and propagation of uncertainties), followed by discussions on the required actions to standardize them. Presentations and discussions shall focus on:

- Reviewing theoretical considerations pertaining to signal filtering and error propagation
- Assessing in details how the above topics are treated in each participant’s analysis software
- Reviewing methodologies and approaches used by other communities (e.g., EARLINET)
- Defining approaches and strategies to guarantee that the ISSI Team fulfills its final objectives
- Developing tools and docs to guarantee that the agreed approaches are implemented
- Defining recommendations, guidelines, and action items based on the first meeting’s outcome

 

  Meeting Agenda

 

 

Monday November 29, 2010

14:00 Welcome                                                                        

·        Opening and Logistics, the International Space Science Institute (ISSI)      M. Falanga

14:20 General

·        Standardized definitions and metadata: Why are we here?                          T. Leblanc     (15 min)

·        Review of agenda                                                                                                All                   (5 min)

·        Standardized definitions and metadata: What are the needs?                      C. Retscher   (20 min)

15:30 Coffee Break

15:45 Vertical Resolution: A review 

·        Vertical Resolution and Signal Filtering: A quick review                          T. Leblanc     (20 min)

·        Resolution intercomparison in the NDACC ozone algorithms                 S. Godin-Beekmann      (20 min)

17:00 “Welcome by ISSI” Ice Breaker

 

Tuesday November 30, 2010

 

8:30 Vertical Resolution in the NDACC Lidar Algorithms

·        Past Algorithms Intercomparisons: the EARLINET perspective                   F. Madonna         (20 min)

·        Data filtering and vertical resolution as defined by the DIN/VDI lidar guidelines     T. Trickl          (20 min)

·        STROZ and AT (O3 and T)                                                                                T. McGee             (15 min)

·        Tsukuba (O3 and T)                                                                                            B. Tatarov            (15 min)

·        Lauder (O3 and T)                                                                                               A. van Gijsel        (15 min)

10:30 Coffee Break

10:45 Vertical Resolution in the NDACC Lidar Algorithms (continued)

·        OHP (O3)                                                                                                             G. Payen              (15 min)

·        Purple Crow Lidar (T)                                                                                         B. Sica                 (15 min)

·        Reunion Island (tropospheric O3)                                                                     F. Gabarrot          (15 min)

·        Tor Vergata (T)                                                                                                   G. Liberti               (15 min)

·        Dumont d'Urville (O3 and T)                                                                               A. Haefele           (15 min)

·        TMF and MLO (O3 and T)                                                                                 T. Leblanc           (15 min)

 

12:15 Lunch Break

 

14:00 Vertical Resolution in the NDACC Lidar Algorithms: Discussion                              

·        Introduction to Discussion: Goals and objectives                                      T. Leblanc and All

·        Discussion                                                                                                     All

·        Synthesis                                                                                                        All

·        Action Items (for Thursday and beyond)                                                     All

15:30 Coffee Break

15:45 Definition and Propagation of Uncertainties: A review 

·        Propagation of uncertainties: A quick review                                                        T. Leblanc     (20 min)

·        Vertical resolution and uncertainties: a passive remote sensing perspective   C. Straub       (15 min)

·        Estimating uncertainties: the GRUAN in-situ perspective                                    F. Immler       (20 min)

17:15 Adjourn for the day

 

 

Wednesday December 1, 2010

 

9:00 Uncertainties in the NDACC Lidar Algorithms                                                                         

·        Garmisch (tropospheric O3)                                                                  T. Trickl                (15 min)

·        STROZ and AT (O3 and T)                                                                    T. McGee             (15 min)

·        Tsukuba (O3 and T)                                                                                B. Tatarov            (15 min)

·        Lauder (O3 and T)                                                                                   A. van Gijsel        (15 min)

·        OHP (O3)                                                                                                  S. Godin-Beekmann (15 min)

10:30 Coffee Break

10:45 Uncertainties in the NDACC Lidar Algorithms (continued)

·        Purple Crow Lidar (T)                                                                             B. Sica                 (15 min)

·        Reunion Island (tropospheric O3)                                                         F. Gabarrot          (15 min)

·        Tor Vergata                                                                                             G. Liberti              (15 min)

·        Dumont d'Urville (O3 and T)                                                                   A. Haefele           (15 min)

·        TMF and MLO (O3 and T)                                                                      T. Leblanc           (15 min)

 

12:15 Lunch Break

 

14:00 Uncertainties in the NDACC Lidar Algorithms: Discussion

·        Introduction to Discussion: Goals and objectives                                T. Leblanc and All

·        Discussion                                                                                                All

·        Synthesis                                                                                                   All

·        Action Items (for Thursday and beyond)                                                 All

15:30 Coffee Break

15:45 Synthesis and logistical considerations

·        Synthesis                                                                                                 All

·        Getting ready for Thursday and Friday                                                All

17:15 Adjourn for the day

 

19:00 Team Dinner (location TBA)

 

Thursday December 2, 2010

 

9:00 Parallel Sessions of the Sub-Groups on Vertical Resolution and Uncertainties *

·        Tool Development I                                                                                       Sub-groups
(programming: FORTRAN, IDL, MathLab, Python, other?)

10:30 Coffee Break

10:45 Parallel Sessions of the Sub-Groups on Vertical Resolution and Uncertainties *

·        Tool Development II                                                                                      Sub-groups
(programming: FORTRAN, IDL, MathLab, Python, other?)

 

12:15 Lunch Break

 

14:00 Vertical Resolution: Tool Proofing                                                                         

·        Tool Proofing                                                                                                 All

15:30 Coffee Break

15:45 Uncertainties: Tool Proofing

·        Tool Proofing                                                                                                 All

17:15 Adjourn for the day

 

 

 

 

* NOTES:

  • Sub-groups do not have to include all Team Members. Sub-groups will take part of the elaboration of the standardization tools within the limit of available logistics (mainly subject to time and practical constraints). These technical considerations will be discussed Wednesday afternoon before adjourning.
  • Thursday’s agenda will likely be refined based on the discussions of the first three days.

 

Friday December 3, 2010

 

9:00 Final Discussion on Vertical Resolution

·        Synthesis                                                                                                  All

·        Action items, incl. future Implementation in NDACC algorithms        All

9:45 Final Discussion on Uncertainties 

·        Synthesis                                                                                                  All

·        Action items, incl. future Implementation in NDACC algorithms        All

10:30 Coffee Break

10:45 Closing remarks 

·        ISSI Team Website Updates                                                                       All

·        Yet a Format for the future ISSI Book/Report?                                          All

·        Next Meeting                                                                                                 All

 

12:15 Adjourn Meeting

 

 

Additional Meeting Information:

Meeting Program and Format

Two projectors should be available for display purposes. Please bring your presentations on a memory stick and upload them to computer 2 prior to your session. Someone will be available to assist you with this during breaks and just before each session. A large amount of time will be dedicated to discussions. Therefore, interrupting the speakers during their presentation is NOT recommended. Please wait for the end of the talks to ask questions.

All abovementioned times and durations are approximate, and listed as a guideline only. Times will likely slide backward or forward based on the number and length of the presentations and related discussions in the various sessions.

Social Events

1. ISSI Icebreaker on Monday 17:00   

2. Team Dinner on Wednesday 19:00, Altes Tramdepot