2.2.2 spase://VMO/NumericalData/WDC/Nurmijarvi/Magnetometer/PT1H/WDC_FORMAT Nurmijarvi Magnetometer 1-hr Data in WDC Format 2012-05-02T12:34:56.789 Nurmijarvi 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: Nurmijarvi Geophysical Observatory, Finnish Meteorological Institute 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/Kari.Pajunpaeae 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/Nurmijarvi/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/Nurmijarvi/Magnetometer MagneticField 1953-01-01T00:00:00.000 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 Nurmijarvi WDC Station Code: NUR 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 Nurmijarvi 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 Nurmijarvi 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 Nurmijarvi 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 Nurmijarvi Magnetic Field Magnitude PT1H nT 10^9 >T 0 70000 9999 Magnitude Magnetic NUR 1953 X Y Z NUR 1954 X Y Z NUR 1955 X Y Z NUR 1956 X Y Z NUR 1957 X Y Z NUR 1958 X Y Z NUR 1959 X Y Z NUR 1960 X Y Z NUR 1961 X Y Z NUR 1962 X Y Z NUR 1963 X Y Z NUR 1964 X Y Z NUR 1965 X Y Z NUR 1966 X Y Z NUR 1967 X Y Z NUR 1968 X Y Z NUR 1969 X Y Z NUR 1970 X Y Z NUR 1971 X Y Z NUR 1972 X Y Z NUR 1973 X Y Z NUR 1974 X Y Z NUR 1975 X Y Z NUR 1976 X Y Z NUR 1977 X Y Z NUR 1978 X Y Z NUR 1979 X Y Z NUR 1980 X Y Z NUR 1981 X Y Z NUR 1982 X Y Z NUR 1983 X Y Z NUR 1984 X Y Z NUR 1985 X Y Z NUR 1986 X Y Z NUR 1987 X Y Z NUR 1988 X Y Z NUR 1989 X Y Z NUR 1990 X Y Z NUR 1991 X Y Z F NUR 1992 X Y Z F NUR 1993 X Y Z F NUR 1994 X Y Z F NUR 1995 X Y Z F NUR 1996 X Y Z F NUR 1997 X Y Z F NUR 1998 X Y Z NUR 1999 X Y Z NUR 2000 X Y Z F NUR 2001 X Y Z F NUR 2002 X Y Z F NUR 2003 X Y Z F NUR 2004 X Y Z F NUR 2005 X Y Z F NUR 2006 X Y Z F NUR 2007 X Y Z F NUR 2008 X Y Z F NUR 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