Atelier ASTROPARTICULES et ATMOSPHÈRE
ASTROPARTICLES and ATMOSPHERE (AA) workshop
Paris, 26-28 May 2003



LIST OF TALKS (updated 28 May 2003,click on number to load)

PART I:

GENERAL ASTROPHYSICS TALKS 

1 . Introduction: current goals of high energy astrophysics [20+5 min, Etienne Parizot]
2 . Development of gamma-induced extensive air showers (emphasis on Cherenkov production and absorption) [30+10 min, Konrad Bernlöhr].
3 . Development of hadron-induced extensive air showers (emphasis on fluorescence) and the development of CORSIKA simulations for fluorescence detector observations [30+10 min, Hans Klages].
4 . Air fluorescence yield (Auger) [30+10min, Paolo Privitera].
5 . Introducing radiosonde data into the simulations of atmospheric Cherenkov telescopes (thesis) [15min, Michael Daniel].

MONITORING OF THE ATMOSPHERE BY THE ASTROPHYSICAL EXPERIMENTS

6 . CELESTE [20+5 min, Javier Bussons Gordo].
7a. HESS: Lidar [20+5 min, Roland LeGallou and K.-Michael Aye].
7b. HESS: Atmospheric Monitoring [20+5 min, Roland LeGallou and K.-Michael Aye].
8a. MAGIC [20+5 min, Razmick Mirzoyan]. Also, activities of the SUCOSIP international committee: optical characterisation of the observatories on the Canary Islands; new instrumentation and methods for characterising the atmosphere.
8b. WHIPPLE & VERITAS [10 min, Martin Schroedter].
9. AUGER
 9a.1 Auger atmospheric monitoring system. [10+5 min, John Matthews] .
 9a.2 Aerosol phase function with the Coihueco Fluorescence Detector [10+5 min, John Matthews] .
 9b. Annual variation of the atmosphere at the Auger Observatory and implications on FD observables [15+5 min, Bianca Kielhauer].
10. EUSO [20+5 min, Didier Lebrun].
 

PART II:

METEOROLOGY TALKS

11. Introduction on global and local meteorology: air circulation, thermodynamics, geostrophic/hydrostatic equilibrium, regional weather, variation time scales [30+10min Hervé Letreut, LMD director].
12. Transmission: radiative transfer, albedo, attenuation (scattering, absorption) by molecules, aerosols and clouds [30+10min, Didier Tanré, Laboratoire d'Optique Atmospherique de Lille].
13. Atmospheric models: mass profiles, CEP and ECMWF re-analysis, mesoid-scale models (mesoNH,MM5), MSIS, US Standard, public archives [30+10min, Frédéric Hourdin, LMD.
14. Atmospheric aerosols: sources, properties, models and measurements [30min, François Dulac, LSCE.
15. Influence of aerosols on the reconstructed astrophysical parameters [30min, Pierre Flamant, LMD].
16. Classic measurement: radiosounding, weather stations, meteorological radar [20+5min, Alain Dabas, CNRM, Meteofrance].
17. Cloud properties from satellite observations [20+5min, Claudia Stubenrauch, LMD].
18. Cirrus physical properties from IR Vertical Sounder (TOVS) observations [20+5min, Claudia Stubenrauch, LMD].

LIDAR

19. Introduction [20+5min, Pierre Flamant, LMD].
20. Space-borne LIDAR [30+10min, Pierre Flamant, LMD].
21. LIDAR systems (backscattering LIDAR, DIAL LIDAR, ...) [20+10min, Laurent Sauvage, LMD].
22. Inversion algorithms, Raman LIDAR [55+10min, Laurent Sauvage, Vincenzo Rizi, and Federico Fierli, LMD].
 

PART III:

    DISCUSSION: the last part of the workshop will be devoted to more informal discussions where astrophysicists and atmosphere experts are encouraged to discuss specific needs and future projects of collaboration.



PROGRAMME (updated 28 May 2003)


TIME             SPEAKER           TALK (number as per list above)

    26 May 2003
09:30            CNRS                           Welcoming Remarks
09:45            Etienne Parizot                                1
10:15            Konrad Bernloehr                               2
11:00                PAUSE
11:30            Herve LeTreut                                 11
12:10                PAUSE

14:00            Hans Klages                                    3
14:40            Paolo Privitera                                4
15:20            Michael Daniel                                 5
15:40                PAUSE
16:10            Claudia Stubenrauch                           18
16:35            Javier Bussons                                 6
17:00            Michael Aye                                    7a
17:10            Rolland LeGallou                               7b
17:25            Razmick Mirzoyan                               8a
17:50            Martin Schroedter                              8b
18:50                END

    27 May 2003
09:30            John Matthews                                   9a1
09:45            John Matthews                                   9a2
09:55            Bianca Kielhauer                                9b
10:20            Didier Lebrun                                  10
10:50                PAUSE
11:20            Didier Tanre                                   12
12:00            Frederic Hourdin                               13
12:35                PAUSE

14:00            Francois Dulac                                 14
14:40            Pierre Flamant                                 15
15:20            Alain Dabas                                    16
15:45                PAUSE
16:15            Claudia Stubenrauch                            17
16:40                DISCUSSION
18:00                END
20:00                Dinner

    28 May 2003
09:30            Pierre Flamant                                 19
09:55            Pierre Flamant                                 20
10:35            Laurent Sauvage                                21
11:05                PAUSE
11:30            Laurent Sauvage (combined with next talk)      22
12:10            Federico Fierli & Vincenzo Rizi                23
12:30                PAUSE

14:00                Summary
14:20                Discussion
16:00                END


CURRENT LIST OF PARTICIPANTS  (updated 23 May 2003)
 
 
K.-Michael Aye S HESS - University of Durham
Valery Andreev
EUSO - University of California Los Angeles
Anna Anzalone
EUSO - Istituto de Astrofisica Spaziale et Fisica cosmica Palermo
Corinne Berat
EUSO - Laboratoire de Physique Subatomique et de Cosmologie Grenoble
Konrad Bernlöhr S HESS - Humboldt University Berlin + Max-Planck-Institut Heidelberg
Elisabeth Brion
CELESTE - Centre d'Études Nucléaires Bordeaux-Gradignan
Javier Bussons Gordo S CELESTE - Groupe d'Astroparticules de Montpellier
Osvaldo Catalano
EUSO - Istituto de Astrofisica Spaziale et Fisica cosmica Palermo
Michael Daniel S VERITAS -Iowa StateUniversity
Alain Dabas S Météo-France - Centre National de Recherches Météorologiques Toulouse 
Pierre Da Silva
AUGER - LPNHE Université de Paris VI et VII
Georges Debiais
CELESTE & CAT - Université de Perpignan
Jean Dolbeau
EUSO - Collège de France
Flore Dricot 
CELESTE - Groupe d'Astroparticules de Montpellier + Université de Paris XI
François Dulac S Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette
Bernard Fabre
CELESTE & CAT - Université de Perpignan
Pierre Flamant S Laboratoire de Météorologie Dynamique - École Polytechnique
Yves Gallant
CELESTE - Groupe d'Astroparticules de Montpellier
Philippe Gorodetzky
EUSO - Collège de France
Frédéric Hourdin S Laboratoire de Météorologie Dynamique - École Polytechnique
David Kieda
VERITAS - Universityof Utah
Bianca Kielhauer S AUGER - Institut für Kernphysik Karlsruhe
Hans Klages S AUGER - Institut für Kernphysik Karlsruhe
Didier Lebrun S EUSO - Laboratoire de Physique Subatomique et de Cosmologie Grenoble
Roland Le Gallou S HESS - University of Durham
Hervé Le Treut S Laboratoire de Météorologie Dynamique - École Polytechnique
Cettina Maccarone
EUSO - Istituto de Astrofisica Spaziale et Fisica cosmica Palermo
John Matthews S AUGER - University of New Mexico
Alain Maurissen
EUSO - Observatoire Cantonal de Neuchâtel
Christine Merck
MAGIC - Max-Planck-Institut für Physik München
Razmick Mirzoyan S MAGIC - Max-Planck-Institut für Physik München
Sylvain Moreggia
EUSO - Laboratoire de Physique Subatomique et de Cosmologie Grenoble
John Osborne
HESS - University of Durham
Etienne Parizot S AUGER - Institutde Physique Nucléaire Orsay
Thomas Patzak
EUSO - Collège de France
Frédéric Piron
CELESTE - Groupe d'Astroparticules de Montpellier
Eric Plagnol
EUSO - Collège de France
Paolo Privitera S AUGER - InstitutoNazionale di Física Nucleare Roma
Michael Punch
HESS - Collège de France
Gaby Radel
Laboratoire de Météorologie Dynamique - École Polytechnique
Vincenzo Rizi S International Coordination-group on Laser Atmospheric Studies - Università Degli Studi L'Aquila
Bruno Sacco
EUSO - Istituto de Astrofisica Spaziale et Fisica cosmica Palermo
Laurent Sauvage S Laboratoire de Météorologie Dynamique - École Polytechnique
Paolo Scarsi 
EUSO - Istitutode Astrofisica Spaziale et Fisica cosmica Palermo
Martin Schroedter S VERITAS - University of Arizona
Claudia Stubenrauch S Laboratoire de Météorologie Dynamique - École Polytechnique
Didier Tanré S Laboratoire d'Optique Atmosphérique - Université de Lille
Alessandro Thea
EUSO - Università di Genova
Arun Tripati
Auger - UCLA
Francois Vannucci
EUSO - Collège de France

S = speaker



OFFICIAL ANNOUNCEMENT (issued 13 March)

ASTROPARTICLES and ATMOSPHERE (AA) WORKSHOP - Paris - 26-28 May 2003

        Dear Colleague,

        A first workshop on the interface between high-energy cosmic/gamma-ray
astrophysics and atmospheric modelling will be held in Paris, Monday 26 through
Wednesday 28 May, 2003.

        An initiative by members of a number of collaborations (CELESTE, HESS,
AUGER and EUSO), this workshop responds to a growing need of detailed knowledge
of the role played by the atmosphere in the indirect detection of high-energy cosmic
and gamma rays. The aim is to bring together astrophysicists and specialists of the
atmosphere in order to exchange information and know-how pertaining to the use of
the atmosphere as a high-energy gamma and particle detector via Cherenkov light and
fluorescence. Participants from all experiments and groups are welcome to attend.

        Following an introduction on the current goals of high-energy (GeV up to EeV)
astrophysics, the first set of presentations will focus on i) the development of gamma-
and hadron-initiated extensive air showers with an emphasis on the production,
scattering and absorption of both Cherenkov and fluorescence photons, and
ii) the influence of atmospheric profiles on shower reconstruction. Then, the
astrophysicists will present their experiments, the sensitivity of their devices to
atmospheric parameters and the tools they are using or planning to use in order to
correct for atmospheric effects.

        The second part of the workshop will be devoted to meteorology talks, where the
community of atmosphere specialists will present the status of atmospheric modelling
on global and local scales as well as the state of the art in sounding devices. Light
transmission -- particularly through aerosols -- and recent developments in
ground-based and space-borne LIDAR ranging will enjoy detailed coverage.

        The workshop will conclude with a more informal session where astrophysicists
and atmosphere experts are encouraged to discuss their specific needs and future
projects of collaboration. We hope that both communities benefit from this interaction
and that new scientific alliances in the Astrophysics/Atmosphere frontier will emerge
from this workshop.

============================================================
DATE: 26 - 28 May 2003 (please note that May 29, Ascension Day, is a holiday)
VENUE: Collège de France (central Paris)

The preliminary programme and further conference information can be found on the
web site (frequent updates):

                http://www.lpta.univ-montp2.fr/users/javier/AAA.htm

This site will soon include a tentative schedule, information on accomodation and on
transport to and from Collège de France and Paris. There is no registration form but,
please, send us an e-mail (javier@gamum2.in2p3.fr) as soon as possible if you wish
to attend. We will do our best to accommodate as many participants as possible.
============================================================

 See you in Paris. Best regards,

        Javier Bussons Gordo, Yves Gallant, Etienne Parizot and Eric Plagnol,

        for the organizing committee:
Corinne BERAT  (Laboratoire de Physique Subatomique et de Cosmologie,Grenoble)
Elisabeth BRION   (Centre d'Études Nucléaires, Bordeaux-Gradignan)
Javier BUSSONS GORDO   (Groupe d'Astroparticules, Montpellier)
Pierre FLAMANT  (Laboratoire de Météorologie Dynamique, Palaiseau)
Yves GALLANT    (Groupe d'Astroparticules, Montpellier)
Etienne PARIZOT   (Institut de Physique Nuclèaire, Orsay)
Eric PLAGNOL      (Collège de France, Paris)
Michael PUNCH    (Collège de France, Paris)
Laurent SAUVAGE    (Laboratoire de Météorologie Dynamique, Palaiseau).

This workshop is financed, in part, by the GDR-PCHE (Research Group on High
Energy Cosmic Phenomena) of the CNRS (Centre National de la Recherche Scientifique).


INTERESTING PHYSICS DOCUMENTS :

CELESTE's LIDAR page
- Bernlöhr: Impact of atmospheric parameters on the atmospheric Cherenkov tecnhique. bernlohr.pdf
- Debiais: Hilbert transform or Kramers-Kronig relations applied to some aspects of linear and non-linear physics. gd_KramersKronig.pdf
- Degrange: Rayonnements cosmiques de haute énergie. BD_EcoleJoliotCurie2000.ps.gz
- Fernald: Analysis of atmospheric lidar observations: some comments. Applied Optics, vol 23, No 5 (1984), 652.
- di Girolamo et al: Aerosol observations by lidar in the nocturnal boundary layer. girolamo_lidar.pdf
- Hillas: The sensitivity of Cherenkov radiation pulses to the longitudinal development of cosmic-ray showers. J.Phys.G: Nucl. Phys. 8 (1982) 1475-1492.
- Klett: Stable analytical inversion solution for processing lidar returns. Applied Optics, vol 20, No2 (1981), 211.
- Kunz: Two-wavelength lidar inversion algorothm. AO_kunz.pdf
- Kunz: Transmission as an input boundary value for an analytical soultion of a single-scatter lidar equation. Applied Optics, vol 35, No 18 (1996), 3255.
- Rocadenbosch et al: Error analysis for the lidar backward inversion algorithm. roca1.ps.gz
- Rocadenbosch et al: Lidar inversion of atmospheric backscatter and extinction-to-backscatter ratios by use of a Kaman filter.  roca2.ps.gz
- Sicard et al: Variational method for the retrieval of the optical thickness and the backscatter coefficient from multi-angle lidar profiles. sicard_lidar.pdf
- Snabre et al: Atmospheric attenuation in gamma ray astronomy [Astroparticle Physics 8 (1998) 159-171].  snabre_AP.ZIP (doc, tif)
- Veberic et al: Scanning lidar based atmospheric monitoring for fluorescent detectors of cosmic showers.  veberic_lidar1.ps.gzveberic_lidar2.ps.gz
- Young: Analysis of lidar-backscattered profiles in optically thin clouds. AO_young.pdf

STACEE
- Lewandowska: Development of a CCD-based photometry system for atmospheric monitoring. lewandowska_stacee_thesis.ps.gz

MAGIC
- Schwarz: Development of a LIDAR for measuring the atmospheric transmission for GeV-TeV gamma astronomy with the 17m MAGIC telescope. RSchwarz_MAGIC_lidar.ps.gz

HESS
- Turver: Sensing sky clarity using an 8-14 micrometer FIR radiometer. durham_FIRradiometer.pdf
- Buckley et al: Measurement of sky clarity using MIR radiometers as an adjunct to atmospheric Cherenkov radiation measurements. durham_MIRradiometer.pdf
- Chadwick et al: Sensing atmospheric conditions using MIR radiometers. durham_MIRsensing.pdf
- Daniel: The attenuation of atmospheric Cherenkov photons. mkdaniel_thesis.ps.gz
- Nolan: Simulation studies of the Imaging Cherenkov Atmospheric Technique using the Durham Mark-6 and HESS stand-alone telescopes. SamNolan_thesis.pdf

AUGER
- Keilhauer et al: Results of the first balloon measurements above the Pampa Amarilla.  keilhauer_auger2003_009.pdf
- Keilhauer et al: Atmospheric Effects on the Longitudinal Development of Extensive Air Showers and their Fluorescence Light. keilhauer_auger2002_022.pdf
- Matthews: Lessons from a toy LIDAR simulation. matthews_lidarAuger1.ps.gz
- Matthews: Klett inversion of simulated Auger LIDAR signals. matthews_lidarAuger2.ps.gz
- Clay et al: Cloud Detection at the High Resolution Fly's Eye. auger_icrc01_cloud.pdf
- Clay et al: Cloud Monitoring for Large Cosmic Ray Sites. auger_icrc99_cloud.ps.gz
- Clay et al: A cloud monitoring system for remote sites. auger_1998_cloud.ps.gz
- Bird et al: Cloud detection for fluorescence and Cherenkov detectors. auger_icrc97_cloud.ps.gz

AKENO
- Yamamoto: Development of atmospheric monitoring system at Akeno Observatory for the Telescope Array project. akeno_lidar.pdf

EUSO
- Bérat: Étude de l'atmosphère terrestre (overheads). EUSOatmo.ps.gz