International Reference Ionosphere
International Reference Ionosphere , or IRI for short, has been a joint scientific project of the International Union of Radio Science (URSI) and the Committee on Space Research (COSPAR) since 1968/69 .
IRI was declared the international standard for the ionosphere in 1999. The founder and first chairman was Karl Rawer , who laid down the guideline that IRI must be based on verifiable data obtained through measurement. Differing results from different measurement methods (in the room and from the floor) should be subjected to a critical examination.
history
In annual meetings at COSPAR or URSI conferences, an international working group grew up until 1977. From the data she collected, a first, preliminary set of elevation profiles for a few parameters was created in 1978. A larger edition followed in 1979. Soon after, computer programs appeared in Fortran and ALGOL . The IRI code 1986 was issued on floppy. From 1995, instead of other media, there has been a Web.Code that is constantly being further developed, see web link The IRI has been the international standard for the terrestrial ionosphere since 1999 .
literature
- Dieter Bilitza: 35 years of International Reference ionosphere - Karl Rawer's legacy , Adv. In Radio Science 2, 2004, pp. 283-287.
- M. Hernandez-Pajares, J. Juan, J. Sanz, D. Bilitza: Combining GPS measurements and IRI model values for Space Weather specification , Adv. Space Research 29, 2002, pp. 949-958.
- Karl Rawer, Sehadri Ramakrishnan, Dieter Bilitza: International Reference Ionosphere 1978 , URSI, Brussels, 1978.
- S. Watari, I. Iwamoto, K. Igarashi, M. Isogai, Y. Arakawa: 3-D visualization of the IRI model , Adv. Space Research 31, 2003, pp. 781-784.