This Directory contains hourly mean values of geomagnetic field components at observatories in Russia and other republic of Former Soviet Union (FSU). The List of observatories given here contains information on the availability of data for each observatory. Data are prepared in the form of annual files in WDC format. The information is coded in ASCII. List of geomagnetic observatories ====================================================================================== OBSERVATORIES CODE CO LAT. LON. DATA YEARS ====================================================================================== ALMA ATA AAA Êazakhstan 43.25 76.92 1963-2002, 2005-2014 ARGENTINE ISLAND AIA Ukraine -65.25 295.73 1996-2014 ARKHANGELSK ARK Russia 64.58 40.50 1976-1988 ARTI ARS Russia 56.43 58.57 1973-2010, 2014 ASHKHABAD ASH Turkmenia 37.95 58.10 1959-1970, 1972-1990 BOROK BOX Russia 58.07 38.23 1977-2000, 2004-2014 CAPE CHELYUSKIN CCS Russia 77.72 104.28 1957-1985, 1990 CAPE WELLEN CWE Russia 66.17 190.17 1957-1987, 1990 DIXON ISLAND DIK Russia 73.54 80.56 1957-1986, 1990, 1995 EKATERINBURG EKT Russia 56.73 61.07 1887-1925 HEISS ISLAND HIS Russia 80.62 58.05 1957-1969 IRKUTSK IRT Russia 52.17 104.45 1957-2016 KARAGANDA KGD Êazakhstan 49.82 73.08 1965-1980, 1982, 1984-1989 KAZAN KZN Russia 55.83 48.85 1957-1960, 1961-1962(t), 1963-1974, 1978, 1980-1989 KIEV KIV Ukraine 50.72 30.30 1958-1991, 2009-2014 KHABAROVSK KHB Russia 47.62 134.70 2012-2015 LENINGRAD LNN Russia 59.95 30.70 1948-1991 LOPARSKAYA MMK Russia 68.25 33.08 1958-1980, 1990 LVOV LVV Ukraine 49.90 23.75 1957-1985, 1986-1989(t), 1991, 1992, 1996-2001, 2003-2015 LAZAREV LZV Russia -69.97 167.10 1960, 1961-1 MAGADAN MGD Russia 60.12 151.02 1966-1990, 1998(t), 1999-2000, 2001(t), 2003(t), 2004-2005, 2012-2015 MINSK MNK Russia 54.10 26.52 1961-2016 MIRNY MIR Russia -66.55 93.02 1956-1985, 1995-1997 MOLODEZHNAYA MOL Russia -67.67 45.85 1965-1977 MOSCOW MOS Russia 55.48 37.31 1957-1993, 1995-2016 North Pole 5 Russia 1956 North Pole 6 NPF Russia 83.60 9.50 1957-1959 North Pole 7 NPG Russia 58.82 268.13 1957-1959 North Pole 8 NPH Russia 77.32 188.30 1959-1962 North Pole 10 NPJ Russia 76.62 166.38 1961-1962 North Pole 12 NPL Russia 79.08 187.22 1963-1964 North Pole 13 NPM Russia 81.00 165.00 1964-1965 North Pole 22 Russia 1974-1978 NOVOKAZALINSK NKK Êazakhstan 45.77 62.12 1969-1973, 1976-1988 NOVOLAZAREVSKAYA NVL Russia -70.77 11.82 1961-1978 NOVOSIBIRSK NVS Russia 55.03 82.90 1966-2015 ODESSA ODE Ukraine 46.78 30.88 1941, 1948, 1949-1956(t), 1957-1991, 1992-1998(t), 2000-2003(t) PETROPAVLOVSK PET Russia 53.10 158.63 1968-2000, 2007-2016 PIONERSKAYA PIO Russia -69.73 95.50 1957-1958, 1971-1972 Pod.TUNGUSKA POD Russia 61.40 90.00 1969-1991 SREDNIKAN SRE Russia 1957-1966 SVERDLOVSK(V.DUB)SVD Russia 56.73 61.07 1930-1954, 1956-1974, 1979-1980 TASHKENT TKT Uzbekistan 41.33 69.62 1957-1991, 1995-2000 TBILISI TFS Georgia 42.08 44.70 1957-2001 TIKHAYA BAY TKH Russia 80.30 52.80 1957-1958 TIXIE BAY TIK Russia 71.58 129.00 1957-1986, 1987(t), 1990-1991 VLADIVOSTOK VLA Russia 43.70 132.16 1957-1989, 1991 VOSTOK VOS Russia -78.45 106.87 1958-1961, 1963-1985, 1992-1998, 2011-2012, 2015 YAKUTSK YAK Russia 62.02 129.72 1957-1997, 2009, 2011-2016 YUZHNO SAKHALINS YSS Russia 46.95 142.72 1957-1988, 1989(t) ====================================================================================== Format Description for Hourly Mean Values of Geomagnetic Field Elements — WDC-format COLUMNS FORMAT DESCRIPTION 1-3 A3 Observatory 3-letter code. 4-5 I2 Year. Last 2 digits, 1996 = 96. See also columns 15-16. 6-7 I2 Month (01-12). 8 Al Element (D,H,X,Y,Z, or F). 9-10 I2 Day of month (01-31). 11-12 A2 Blanks. 13 A1 Arbitrary. 14 A1 Arbitrary. 15-16 I2 Two blanks or Century digits of the year: Year = 1889, Century digits = 18 Year = 1996, Century digits = 19 Year = 2014, Century digits = 20 =============== OLD FORMAT ================ Column 15 - INTERNATIONAL QUIET or DISTURBED DAYS Q=1, D=2. Column 16 - Blank for data since 1900, 8 for data before. =========================================== 17-20 I4 Tabular base. The values are in degrees for D and in hundreds of nanoTeslas for the intensity elements. 21-116 24I4 24 4-digit hourly mean values for the day. The values are in tenth-minutes for D, and in nanoTeslas for the intensity elements. The first hourly mean value represents the mean value between 00:00 UT and 01:00 UT, ..., the 24th value represents the mean between 23:00 UT and 24:00 UT. A missing value is identified by 9999. 117-120 I4 Daily Mean. If any of the hourly mean values for the day are missing 9999 will appear as the daily mean. 121-122 Record end marker. Two chars 'cr'= 13 and 'nl'= 10. he tabular bases, hourly mean values and daily means are right adjusted and signed if negative. Negative values are identified with a minus sign either adjacent to the first significant digit or in the high-order position of the field. NOTE: A blank digit will not appear between a (-) sign and the first significant digit. For example, a value may appear as -050 or b-50 but not as -b50 (b=blank). The 25 values in positions 21-120 will have the range -999 to 9998, with 9999 reserved for missing values. The records are sorted according to observatory code, year, month, element, day ( positions 1-10). For the intensity elements we have that hourly value (nanoTeslas_ = tab.base*100 + tab.value. For the angles D we have that hourly value (Degrees) = Tab.base + tab.value/600. To avoid a 4-digit negative value in positions 21-116, the tabular base will be adjusted for that day; for example for D, one degree is subtracted from the base and 600 units are added to each of the hourly values for the day; for the intensity elements, 500 nT are subtracted from the base and 500 nT are added to each of the hourly values for the day.