Radio Science Bulletin 313 - June 2005 - URSI

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The 2003 IRI Workshop was held at Rhodes Universityin Grahamstown, South Africa, with support from COSPAR,URSI Commissions G and H, the US National ScienceFoundation, ICTP, and several local organizations includingRhodes University, the Hermann Ohlthaver Institute forAeronomy (HOIA), the South African National ResearchFoundation (NRF), and the Grintek Ewation Company.About 40 scientists participated in the week-long meetingand discussed future improvements and enhancement ofIRI with special emphasis on “Quantifying IonosphericVariability”. Participants also discussed concerns regardingthe data quality of groundbased ionosonde data archived inthe World Data Centers. Noting the importance of such datafor studying long-term trends, Prof. Reinisch as chair of IRIsent a letter to the World Data Center in Boulder, CO.In October 2003, the IRI group organized a day-longsession during the German National URSI Meeting inKleinheubach/Miltenberg in honor of Prof. Karl Rawer’s90 th birthday. K. Rawer was the first Chairman of the IRIWorking Group and has continued to strongly support andpromote the IRI effort. Papers presented during this sessionwere published in Advances in Radio Science –Kleinheubacher Berichte.A very successful two day session on “Modeling ofIonospheric Temperatures and Ion Composition’ wasorganized by the IRI Working Group during the 2004COSPAR General Assembly in Paris, France (July 18-24).Papers are now being reviewed for inclusion a special issueof Advances in Space Research.Improvements of the IRI model at equatorial latitudesin the African sector were studied in the framework of anNSF- and Fulbright-supported visits of Dr. Olivier Obrou(University of Cocody, Abidjan, Ivory Coast) and Prof.Jacob Adeniyi (Universiytyt of Ilorin, Ilorin, Nigeria) atNASA’s Goddard Space Flight Center working with Dr.Dieter Bilitza. The results will benefit the representation ofionospheric variability and of F-peak parameters in IRI forthe African region.The IRI Workshop 2005 will be part of the centennialcelebration of the Ebro Observatory in Roquestes, Spain.The meeting chaired by Dr. David Altadill will be held fromJune 27 to July 1 and will focus on “New satellite andground data for IRI, and comparison with regional models”(homepage at http://www.obsebre.es/w3/wsiri/).2.9 Other Working GroupsOther Working Groups in which Commission G isactive are reported on the lead Commission reports. Theseinclude:· Inter-commission Working Group on Solar PowerSatellitesCo-Chair for Commission G: M. Rietveld (Norway)· EGH: Seismo Electromagnetics (Lithosphere-Atmosphere-Ionosphere Coupling)Co-Chair for Commission G: S. Pulinets (Russia)· FG: Atmospheric Remote Sensing using SatelliteNavigation SystemsCo-Chair for Commission G: C. Mitchell (UnitedKingdom)· HGEJ: Supercomputing in Space Radio ScienceCo-Chair for Commission G: A. Barakat (USA)· URSI/IAGA VLF/ELF remote Sensing of the Ionosphereand Magnetosphere (VERSIM)Co-Chair for Commission G: M. Parrot (France)The Working Group report appears in the commissionH report3. Sponsored meetings3.1 Mode A sponsorshipCommission G offered Mode A (no additional funds)support to the following meetings:· Getting the Most out of the Radio Spectrum, London,United Kingdom, 12-25 October 2002· STAMMS – Spatio-Temporal Analysis and MultipointMeasurements in Space, Orléans, France, 12-16 May2003· Atmospheric Remote Sensing Using SatelliteNavigation Systems (URSI Joint Working Group FG),Matera, Italy, 13-15 October 2003· WARS04 (Workshop on Applications of Radio Science)conference, Hobbart, Australia, 18-20 February 2004· COSPAR Capacity Building Workshop: Analysis ofData from Multisatellite Magnetospheric Missions,Beijing, China, 3-14 May 2004· African Regional Workshop, Nairobi, Kenya, 16-20August 2004· Radar 2004, Toulouse, France, 19-21 October 2004· Internatioanl School / Symposium for Space Simulations,Kyoto, Japan, 26-31 March 2005· 2005 Ionospheric Effects Symposium – IES 2005,Alexandria, Virginia, 10-12 May 2005-06-163.2 Mode B sponsorshipMeetings sponsored under Mode B received seedfunding from Commission G, and other Commissions insome cases.· COSPAR 2002 / IRI SessionFull report: The Radio Science Bulletin, December2002, p. 61The 34 th COSPAR congress was held in Houston, USA.The IRI session, held on 17-18 October, reviewedongoing ionospheric modelling activities, with a specialemphasis on efforts that involve the IRI model.· ISAR-3Full report: The Radio Science Bulletin, June 2003, p.50The 3 rd International School on Atmospheric Radar washeld in Trieste, Italy, 25 November – 13 December2002. 28 participants from 17, mostly developingcountries, attended the school.· MST-10Full report: The Radio Science Bulletin, September2003, p. 57The 10 th International Workshop on Technical andScientific Aspects of MST Radar was held 13-20 May2003 at the campus of Universidad de Piura in Peru. A68TheRadio Science Bulletin No 313 (June, 2005)
total of 109 oral papers (24 thereof invited) and 66poster papers were presented.· IRI 2003 WorkshopThe International Reference Ionosphere (IRI) WorkingGroup held their annual workshop in 2003 at RhodesUniversity in Grahamstown, South Africa from 6 to 10October. A total of 30 delegates representing 13 differentcountries attended the 5-day meeting presenting a totalof 38 papers. The theme of IRI 2003 was “IonosphericVariability” and 12 papers were presented covering thistopic.· Vertical Coupling in the Atmsosphere / IonosphereSystemFull report: The Radio Science Bulletin, September2004, p. 115The 2 nd IAGA/ICMA workshop on Vertical Coupling inthe Atmosphere / Ionosphere System was held in Bath,UK, on July 12-15, 2004. It was attended by 65 scientistsfrom 19 countries. The participants presented 60 papers,from which 9 were solicited· COSPAR 2004 / IRI SessionFull report: The Radio Science Bulletin, December2004, p. 110The session, held during the COSPAR congress held18-25 July 2004 in Paris, was organized by the IRIWorking Group with the goal of improving thedescription of the electron and ion temperature and theion composition in the IRI model.· NATO Advanced Study Institute on Sprites, Elvesand Intense Lightning DischargesThe meeting was held at Corte University, France on21-30 July 2004. No report is available at the time ofwriting.· AP/RASC 2004The Asia-Pacific Radio Science Conference was held20-23 August 2004 in Beijing, China. No report isavailable at the time of writing.· IRI 2005 WorkshopFull report: The Radio Science Bulletin, June 2005, p.82.The IRI 2005 workshop was held 27 June – 1 July at theEbro Observatory in Roquetes, Spain.COMMISSION JThis triennium report was prepared by Prof. Inoue,Commission J Chair 2002-2005.1. Scientific ActivitiesThe Wilkinson Microwave Anisotropy Probe(WMAP) has made the detailed full-sky map of the oldestlight in the universe. WMAP detected anisotropies at alevel of roughly 10 -5 on scales of tens of arcminutes toseveral degrees in the microwave background radiation ofthe Universe, and the age of the Universe is shown to be13.7 billion years with an accuracy of 1%. Furthermore,many cosmological parameters such as the geometry andcontents of the Universe were derived in detail (http://map.gsfc.nasa.gov/m_mm.html). Follow-up and more deepobservations have been done. The nature of Gamma RayBurst (GRB) has been investigated by coordinatedobservations from gamma-ray to radio resumes. GRB hasbeen understood that in some kind of a massive starexplosion, the energy is concentrated into the narrow beamto be seen as GRB. Studies of binary system have beenmade: a double pulsar system was found to allow highprecision tests of general relativity, and binary black holesystem is searched to investigate evolution of massive blackhole in AGNs.2. Engineering/Technical DevelopmentsThe Atacama Large Millimeter Array (ALMA) projectis an international astronomy facility and an equal partnershipbetween Europe and North America, in cooperation withthe Republic of Chile. ALMA is funded in North Americaby the U.S. National Science Foundation (NSF) incooperation with the National Research Council of Canada(NRC), and in Europe by the European Southern Observatory(ESO) and Spain (http://www.alma.info/). The NationalAstronomical Observatory of Japan (NAOJ) and the radioastronomy research community in Japan joined to form theExtended ALMA with the Atacama Compact Array (ACA),receiver production, the ACA correlator etc.LOFAR (Low Frequency ARray) started itsconstruction in the Netherlands. LOFAR is an array ofsimple omni-directional antennas instead of mechanicalsignal processing with a dish antenna. The electronicsignals from the antennas are digitised, transported to acentral digital processor, and combined in software toemulate a conventional antenna, operational at frequenciesbelow 250 MHz (http://www.lofar.org/).The Square Kilometre Array (SKA) project has madesubstantial progress in many areas, from science to technicalto organizational. The science case was published as 49refereed papers in a special issue of New AstronomyReviews Vol. 48 in December 2004. Proposals for sitingthe SKA are in preparation in four countries, and RFImonitoring is being carried out. A series of papers on thetechnology to be employed in the SKA have been publishedin a special issue of Experimental Astronomy, Vol. 17.Funding has been obtained for a major SKA design study inEurope, and for SKA Pathfinder telescopes in Australia andSouth Africa. The International SKA Project Office hasbeen established to coordinate the international efforts(http://www.skatelescope.org).TheRadio Science Bulletin No 313 (June, 2005) 69
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Radio Science BulletinISSN 1024-453
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