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============ International Reference Ionosphere ====================

==================== IRInfo 2007/1 =============================

This is an electronic mailing please do not reply to this address, reply to

dieter.bilitza.1@gsfc.nasa.gov

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CONTENTS:

1) IRI-2007 released

2) Report from IRI'06 Workshop

3) IRI'07 Workshop coming up in Prague, July 10 - 14

4) Papers from IRI'03 Workshop published in ASR 39/5

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1) IRI-2007 released

The latest version of the IRI model, IRI-2007, is now available at http://nssdcftp/models/ionospheric/iri/iri2007/ (Fortran program). Please

read the 00README.TXT file for important information regarding the IRI

program files and the download process.

New features and improvements include the following:

(a) Two new options for the topside electron density profile (IRI-2001 correction

term and NeQuick) based on topside sounder data that overcome the problem

of IRI-2001 at high altitudes and high solar activities;

(b) A NeuralNet model for E-region densities at auroral latitudes based on EISCAT

and rocket data that can be adjusted with ground Absorption measurements if

available.

AE-C, -E, and Intercosmos 24 ion data that shows much better agreement with

ISIS-2 and ISS-b IMS data than the old model;

(d) A model for the plasmaspheric electron temperature based on over a decade

of Akebono TED measurements;

(e) For the first time a model for the Spread-F probability based on Brazilian

ionosonde data and describing variations with latitude, local time, month, and

solar activity;

(f) The newest version of the IGRF model (#10) to compute the magnetic field

coordinates used in IRI.

(g) Many technical corrections noted in the COMMENT sections of the different

program files.

Please note that the program includes several switches (logical array JF(30))

to turn on/off specific options. The details and defaults for these switches are

given in the COMMENT section at the beginning of program irisub.for.

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2) Report from IRI-06 Workshop

The report from the IRI'06 workshop was published in the April 2007 issue of

COSPAR's INFORMATION BULLETIN - SPACE RESEARCH TODAY, No 168

and is available online at

http://modelweb.gsfc.nasa.gov/ionos/iri/iri_06_report.html.

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3) IRI'07 Workshop coming up in Prague, July 10 - 14

The 2007 IRI Workshop on "Ionosphere - Modelling, Forcing and Telecom-

municationwill" is a joint meeting with the European COST 296 project and

will take place from July 10 to 14 in Prague, Czech Republic. The workshop

website is at http://www.ufa.cas.cz/html/conferences/IRICOST2007/

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4) Papers from IRI'03 Workshop published in ASR 39/5

Refereed papers from the IRI'03 Workshop at the Ebro Observatory in Spain

were published in a dedicated issue of Advances in Space Research: Volume

39, Issue 5, 2007 (go to http://www.sciencedirect.com/science/journal/02731177

and select Volume 39, Issue 5).