2.2.2 spase://VMO/NumericalData/WDC/Sodankyla/Magnetometer/PT1H/WDC_FORMAT Sodankyla Magnetometer 1-hr Data in WDC Format 2012-05-02T12:34:56.789 Sodankyla Magnetometer data, 1-hr time resoluion, in WDC format. Magnetic Field Vector Element List: XYZF. Note that the list of magnetic field elements that appear in the data set may change over the course of time. For instance, many stations have shifted from DHZ to the XYZ representation of the magnetic field. The time history listed below summarizes changes in element content. A description of the WDC Data Exchange Format for 1-hr magnetic field data is included at the end of this data product description. Please acknowledge: Sodankyla Geophysical Observatory for providing the data observations, and the British Geological Survey, World Data Center for Geomagnetism, Edinburgh for providing access to the data. spase://SMWG/Person/Tero.Raita GeneralContact DataProducer spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact TechnicalContact The Geomagnetic Data Master Catalog at the WDC for Geomagnetism, Edinburgh http://www.wdc.bgs.ac.uk/catalog/intro.html Web site for access to magnetometer data hosted by the World Data Center for Geomagnetism, Edinburgh spase://VMO/NumericalData/WDC/Sodankyla/Magnetometer/PT1H spase://SMWG/Repository/UCLA/VMO Online Open The WDC Geomagnetic Data Master Catalog Repository ftp://ftp.nmh.ac.uk/wdc/obsdata/hourval/single_year The Geomagnetic Data Master Catalog hosted by the British Geological Survey, World Data Center for Geomagnetism, Edinburgh. Text ASCII 311710 bytes P1Y Please thank the British Geological Survey, World Data Center, Edinburgh for use of data from the WDC Geomagnetic Data Master Catalog. Calibrated spase://SMWG/Instrument/Ground/Sodankyla/Magnetometer MagneticField 1914-01-01T00:00:00.000 2009-12-31T23:00:00.000 Some data gaps may be present. If a gap is present at the beginning or end of the file, the time span start and stop dates could be inaccurate as they are assigned assuming an absence of such gaps. PT1H Earth.Surface ground station magnetometer magnetic field magnetogram Sodankyla WDC Station Code: SOD 1-hour WDC Format Universal Time Time Time is expressed using a five column format with the following order: year, month, day, hour, and minute, each stored in interger format. The time columns are the first five columns (1,2,3,4,5) in the flat file. PT1H 5 Universal Time expressed using a 5-column year, month, day, hour, minute representation Year 1 Month 2 Day 3 Hour 4 Minute 5 Temporal North-South Horizontal Magnetic Field Component X Sodankyla North-South Horizontal Magnetic Field Component, positive Northward PT1H nT 10^9 >T Cartesian CGM -70000 70000 9999 Component.I Magnetic East-West Horizontal Magnetic Field Component Y Sodankyla East-West Horizontal Magnetic Field Component, positive Eastward PT1H nT 10^9 >T Cartesian CGM -70000 70000 9999 Component.J Magnetic Vertical Magnetic Field Component Z Sodankyla Vertical Magnetic Field Component, positive upward in the Southern hemisphere, positive downward in the Northern hemisphere PT1H nT 10^9 >T Cartesian CGM -70000 70000 9999 Component.K Magnetic Magnetic Field Magnitude F Sodankyla Magnetic Field Magnitude PT1H nT 10^9 >T 0 70000 9999 Magnitude Magnetic SOD 1914 X Y Z SOD 1915 X Y Z SOD 1916 X Y Z SOD 1917 X Y Z SOD 1918 X Y Z SOD 1919 X Y Z SOD 1920 X Y Z SOD 1921 X Y Z SOD 1922 X Y Z SOD 1923 X Y Z SOD 1924 X Y Z SOD 1925 X Y Z SOD 1926 X Y Z SOD 1927 X Y Z SOD 1928 X Y Z SOD 1929 X Y Z SOD 1930 X Y Z SOD 1931 X Y Z SOD 1932 X Y Z SOD 1933 X Y Z SOD 1934 X Y Z SOD 1935 X Y Z SOD 1936 X Y Z SOD 1937 X Y Z SOD 1938 X Y Z SOD 1939 X Y Z SOD 1940 X Y Z SOD 1941 X Y Z SOD 1942 X Y Z SOD 1943 X Y Z SOD 1944 X Y Z SOD 1946 X Y Z SOD 1947 X Y Z SOD 1948 X Y Z SOD 1949 X Y Z SOD 1950 X Y Z SOD 1951 X Y Z SOD 1952 X Y Z SOD 1953 X Y Z SOD 1954 X Y Z SOD 1955 X Y Z SOD 1956 X Y Z SOD 1957 X Y Z SOD 1958 X Y Z SOD 1959 X Y Z SOD 1960 X Y Z SOD 1961 X Y Z SOD 1962 X Y Z SOD 1963 X Y Z SOD 1964 X Y Z SOD 1965 X Y Z SOD 1966 X Y Z SOD 1967 X Y Z SOD 1968 X Y Z SOD 1969 X Y Z SOD 1970 X Y Z SOD 1971 X Y Z SOD 1972 X Y Z SOD 1973 X Y Z SOD 1974 X Y Z SOD 1975 X Y Z SOD 1976 X Y Z SOD 1977 X Y Z SOD 1978 X Y Z SOD 1979 X Y Z SOD 1980 X Y Z SOD 1981 X Y Z SOD 1982 X Y Z SOD 1983 X Y Z SOD 1984 X Y Z SOD 1985 X Y Z SOD 1986 X Y Z SOD 1987 X Y Z SOD 1988 X Y Z SOD 1989 X Y Z SOD 1990 X Y Z SOD 1991 X Y Z F SOD 1992 X Y Z F SOD 1993 X Y Z F SOD 1994 X Y Z F SOD 1995 X Y Z F SOD 1996 X Y Z F SOD 1997 X Y Z F SOD 1998 X Y Z SOD 1999 X Y Z SOD 2000 X Y Z F SOD 2001 X Y Z F SOD 2002 X Y Z F SOD 2003 X Y Z F SOD 2004 X Y Z F SOD 2005 X Y Z F SOD 2006 X Y Z F SOD 2007 X Y Z F SOD 2008 X Y Z F SOD 2009 X Y Z F Digital WDC Exchange Format for Observatory Hourly Mean Values -------------------------------------------------------------- Magnetic data organized in 1-year files, with the information coded in ASCII 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, I, H, X, Y, Z, or F) 9-10 I2 Day of month (01-31) 11-12 A2 Blanks 13 A1 Arbitrary 14 A1 Arbitrary +-- Old Format: -------------------------+ 15-16 I2 Century digits Column 15: International Quiet or Year = 1889, Century digits = 18. Disturbed Days Q=1, D=2 Year = 1996, Century digits = 19. Column 16: Blank for data since 1900, Year = 2014, Century digits = 20. 8 for data before 1900. +----------------------------------------+ 17-20 I4 Tabular base The values are in degrees for D and I, 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 I, 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. The 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: hourly value (nanoTeslas) = tab.base*100 + tab.value For the angles D and I: hourly value (Degrees) = tab.base + tab.value/600