Index of /pub/stans/iri

      Name                    Last modified       Size  Description

[DIR] Parent Directory 02-Feb-2009 15:27 - [TXT] ccir11.asc 02-Feb-2009 15:32 43k [TXT] ccir12.asc 02-Feb-2009 15:32 43k [TXT] ccir13.asc 02-Feb-2009 15:32 43k [TXT] ccir14.asc 02-Feb-2009 15:32 43k [TXT] ccir15.asc 02-Feb-2009 15:32 43k [TXT] ccir16.asc 02-Feb-2009 15:32 43k [TXT] ccir17.asc 02-Feb-2009 15:32 43k [TXT] ccir18.asc 02-Feb-2009 15:32 43k [TXT] ccir19.asc 02-Feb-2009 15:32 43k [TXT] ccir20.asc 02-Feb-2009 15:32 43k [TXT] ccir21.asc 02-Feb-2009 15:32 43k [TXT] ccir22.asc 02-Feb-2009 15:32 43k [TXT] cira86.for 02-Feb-2009 15:32 6k [TXT] iri90.f 02-Feb-2009 15:32 104k [TXT] irid12.for 02-Feb-2009 15:32 54k [TXT] irif12.for 02-Feb-2009 15:32 65k [TXT] iris12.for 02-Feb-2009 15:32 31k [TXT] ursi11.asc 02-Feb-2009 15:32 29k [TXT] ursi12.asc 02-Feb-2009 15:32 29k [TXT] ursi13.asc 02-Feb-2009 15:32 29k [TXT] ursi14.asc 02-Feb-2009 15:32 29k [TXT] ursi15.asc 02-Feb-2009 15:32 29k [TXT] ursi16.asc 02-Feb-2009 15:32 29k [TXT] ursi17.asc 02-Feb-2009 15:32 29k [TXT] ursi18.asc 02-Feb-2009 15:32 29k [TXT] ursi19.asc 02-Feb-2009 15:32 29k [TXT] ursi20.asc 02-Feb-2009 15:32 29k [TXT] ursi21.asc 02-Feb-2009 15:32 29k [TXT] ursi22.asc 02-Feb-2009 15:32 29k

=========================================================================
National Space Science Data Center      Data set  MI-91H         Nov 1991 
=========================================================================

NAME:	     International Reference Ionosphere (IRI) 1990

SOURCE:      Dieter Bilitza, GSFC/NSSDC code 933/STX, Greenbelt,
             MD 20771, tel. (301) 513-1664, SPAN:  NCF::BILITZA

DIRECTORY:   NSSDCA::NCF_ACQ_USER:[STPMODELS.IONOS.IRI90]*.*
                                                            
CONTENT:     28 files                                       *.*    blocks 
             (1) FORTRAN IRI main program (driver)     IRID12.FOR   111
             (2) FORTRAN IRI subroutines, functions    IRIF12.FOR   135
             (3) CCIR coeff. set for Jan (binary)      CCIR11.BIN    23
                      ...            ...                   ...
            (14) CCIR coeff. set for Dec (binary)      CCIR22.BIN    23
            (15) URSI coeff. set for Jan (binary)      URSI11.BIN    16
                      ...            ...                   ...
            (26) URSI coeff. set for Dec (binary)      URSI22.BIN    16
            (27) test run with examples                IRID12.LOG   109
            (28) FORTRAN subroutines for CIRA-86       CIRA86.FOR    14
            (29) SPECIAL:  IRI-90 Subroutine           IRIS12.FOR    64

INSTRUCTION:  COPY from the above indicated DIRECTORY

     COPY/LOG NSSDCA::NCF_ACQ_USER:[STPMODELS.IONOS.IRI90]*.*   *.*
  
FORMAT:  Variable length records; maximum record length is 74 B(ytes) 
         for (1), 80 B for (2), 2044 B for (3) to (26), and 77 B for (27).

ASCII-VERSION:  There is also a ASCII version of the coefficient files
                and IRI programs, located in
    
          NSSDCA::NCF_ACQ_USER:[STPMODELS.IONOS.IRIASCII]*.*

   CONTENT:  28 files                                       *.*    blocks 
             (1) FORTRAN IRI main program (driver)     IRID12.FOR   111
             (2) FORTRAN IRI subroutines, functions    IRIF12.FOR   135
             (3) CCIR coeff. set for Jan (ASCII)       CCIR11.BIN    90
                      ...            ...                   ...
            (14) CCIR coeff. set for Dec (ASCII)       CCIR22.BIN    90
            (15) URSI coeff. set for Jan (ASCII)       URSI11.BIN    62
                      ...            ...                   ...
            (26) URSI coeff. set for Dec (ASCII)       URSI22.BIN    62
            (27) test run with examples                IRID12.LOG   109
            (28) SPECIAL:  IRI-90 Subroutine           IRIS12.FOR    64

BRIEF DESCRIPTION:

This software package contains the International Reference Ionosphere 1990
(IRI-90). IRI is the empirical reference model of ionospheric densities and 
temperatures (electrons and ions) recommended for international use by the 
Committee on Space Research (COSPAR) and the International Union of Radio 
Science (URSI). It was established in a world-wide collaboration starting in 
the late sixties. IRI is up-dated bi-yearly during special IRI workshops to 
incorporate newly available measurements. IRI is based on all the important 
ionospheric data sources including ground-based (ionosonde, absorption, 
incoherent scatter) and spacecraft (Alouette, ISIS, AE, AEROS, DE, rockets) 
measurements. IRI provides monthly mean values for magnetically quiet 
conditions at non-auroral latitudes in the altitude range 50km to 2000km. 

IRI-90 differs from IRI-86 by offering several new options: (i) URSI-1989
foF2 model, (ii) Gulyaeva-1987 model for F2 bottomside thickness, (iii) 
analytical LAY-representation of E-F region, (iv) Danilov-Yaichnikov-1985
model for ion composition. IRI-90 includes also an improved representation
of the foE nighttime variation and several technical improvements of the
computer code. For more details see Bilitza (1990). In this version of 
IRI the neutral temperature is obtained with CIRA-86, replacing the 
earlier used CIRA-72. 

The IRI-90 software package includes 28 files: the Fortran source codes 
for the interactive IRI driver program IRID11.FOR, the IRI subroutines
and functions IRIF11.FOR, the CIRA-86 subroutines CIRA86.FOR, and a 
special all-in-one subroutine IRIS12.FOR, the 24 binary data files for 
the CCIR (foF2, M3000F2) and URSI (foF2) model coefficients from January 
(CCIR11.BIN) to December (CCIR22.BIN), the log file of a test run of the 
driver IRID11.LOG. IRID11 produces profiles of electron density, electron 
and ion temperature and ion composition (O+, H+, He+, O2+, NO+) in 
latitude or longitude (geodetic or geomagnetic), or solar activity 
(12-months-running mean of solar sunspot number), or month, or day-of-
year, or local (or universal) time, or altitude. The IRI software is also 
available on floppy disk for IBM compatible personal computers.


REFERENCES:
   
K. Rawer, S. Ramakrishnan and D. Bilitza, IRI 1978, 75p(ages),
 Report, International Union of Radio Science (URSI), Brussels, 1978.

K. Rawer, D. Bilitza and S. Ramakrishnan, Goals and Status of the
 IRI, Rev. Geophys. Space Phys. 16, 177, 1978.

World Data Center A for Solar-Terrestrial Physics, Boulder, Colorado,
 Report UAG-82, IRI 79 (Tables, Figures and Program), 243p, 1981.
 Report UAG-90, Experience with and proposed Improvements of IRI 79, 
 232p, 1984. (available from NGDC, 325 Broadway, Boulder, CO 80303)

Advances in Space Research, Pergamon Press, New York,
 Volume 2(10), The Upper Atmosphere of the Earth and Planets, 1982.
 Volume 4(1), Towards an Improved IRI, 171p, 1984.
 Volume 5(7), Models of the Atmosphere and Ionosphere, 1-114, 1985.
 Volume 5(10), IRI - Status 1985/86, 131p, 1985.
 Volume 7(6), IRI - Status 1986/87, 130p, 1987
 Volume 10(8), Ionospheric Informatics and Empirical Modelling, 133p, 1990
 Volume 10(11), Development of IRI-90, 1990
 Volume 11(10), Enlarged Space and Ground Data Base for Ionospheric
    Modelling, 1991

D. Bilitza, International Reference Ionosphere 1990, National Space
 Science Data Center, NSSDC/WDC-A-R&S 90-20, Greenbelt, Maryland, 1990

=========================================================================
National Space Science Data Center      Data set  MI-91H         Nov 1991 
=========================================================================