Solar wind speed synoptic chart from IPS measurements (1990-1994)

Interplanetary scintillation (IPS) of cosmic radio signals has been employed to measure the solar wind in regions out of the ecliptic plane and near the sun, to which spacecraft have no access. The IPS observations are operated at a frequency of 327 MHz using four radio telescopes at Toyokawa, Fuji, Sugadaira and Kiso. This four-antenna system is able to observe the solar wind at distances of 0.1-1 AU from the sun.

Each solar wind speed synoptic chart was given by superposition of data for three Carrington rotation numbers. 

    Year  Rotation

  1.  90_1827_1829  Y 

  2.  90_1828_1830  Y 

  3.  90_1829_1831  Y 

  4.  90_1830_1832  Y 

  5.  90_1831_1833  Y 

  6.  90_1832_1834  Y 

  7.  90_1833_1835  Y 

  8.  90_1834_1836  Y 

  9.  91_1840_1842  Y 

  10.  91_1841_1843  Y 

  11.  91_1842_1844  Y 

  12.  91_1843_1845  Y 

  13.  91_1844_1846  Y 

  14.  91_1845_1847  Y 

  15.  91_1846_1848  Y 

  16.  91_1847_1849  Y 

  17.  91_1848_1850  Y 

  18.  92_1854_1856  Y 

  19.  92_1855_1857  Y 

  20.  92_1856_1858  Y 

  21.  92_1857_1859  Y 

  22.  92_1858_1860  Y 

  23.  92_1859_1861  Y 

  24.  92_1860_1862  Y 

  25.  92_1861_1863  Y 

  26.  93_1866_1868  Y 

  27.  93_1867_1869  Y 

  28.  93_1868_1870  Y 

  29.  93_1869_1871  Y 

  30.  93_1870_1872  Y 

  31.  93_1871_1873  Y 

  32.  93_1872_1874  Y 

  33.  93_1873_1875  Y 

  34.  93_1874_1876  Y 

  35.  94_1881_1883  Y 

  36.  94_1882_1884  Y 

  37.  94_1883_1885  Y 

  38.  94_1884_1886  Y 

  39.  94_1885_1887  Y 

  40.  94_1886_1888  Y 

  41.  94_1887_1889  Y 

  42.  94_1888_1890  Y 

    Computer Tomography Method

  1.  95_1895       Y        

  2.  95_1896       Y        

  3.  95_1897       Y        

  4.  95_1898       Y        

  5.  95_1899       Y        

  6.  95_1900       Y        

  7.  95_1901       Y

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