2.2.2 spase://VMO/NumericalData/WDC/Baker.Lake/Magnetometer/PT1H/WDC_FORMAT Baker Lake Magnetometer 1-hr Data in WDC Format 2012-05-02T12:34:56.789 Baker Lake Magnetometer data, 1-hr time resoluion, in WDC format. Magnetic Field Vector Element List: DHXYZF. 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: Geological Survey of Canada 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/Lorne.McKee 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/Baker.Lake/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/Baker.Lake/Magnetometer MagneticField 1951-03-01T00:00:00.000 2010-12-31T23:00:00.000 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 Baker Lake WDC Station Code: BLC 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 Magnetic Field Declination D Baker Lake Magnetic Field Vector Declination Angle PT1H Degree 2*pi > Radian Cylindrical CGM -180.0 180.0 9999 DirectionAngle.AzimuthAngle Magnetic Horzontal Magnetic Field Magnitude H Baker Lake Horzontal Magnetic Field Magnitude PT1H nT 10^9 >T Cylindrical CGM 0 70000 9999 Projection.IJ Magnetic North-South Horizontal Magnetic Field Component X Baker Lake 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 Baker Lake 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 Baker Lake 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 Baker Lake Magnetic Field Magnitude PT1H nT 10^9 >T 0 70000 9999 Magnitude Magnetic BLC 1951 D H Z BLC 1952 D H Z BLC 1953 D H Z BLC 1954 H Z BLC 1955 D H Z BLC 1956 D H Z BLC 1957 H Z BLC 1958 H Z BLC 1959 H Z BLC 1960 X Y Z BLC 1961 X Y Z BLC 1962 X Y Z BLC 1963 X Y Z BLC 1964 X Y Z BLC 1965 X Y Z BLC 1966 X Y Z BLC 1967 X Y Z BLC 1968 X Y Z BLC 1969 X Y Z BLC 1970 X Y Z BLC 1971 X Y Z BLC 1972 X Y Z BLC 1973 X Y Z BLC 1974 X Y Z BLC 1975 X Y Z BLC 1976 X Y Z BLC 1977 X Y Z BLC 1978 X Y Z BLC 1979 X Y Z BLC 1980 X Y Z BLC 1981 X Y Z BLC 1982 X Y Z BLC 1983 X Y Z BLC 1984 X Y Z BLC 1985 X Y Z BLC 1986 X Y Z BLC 1987 X Y Z BLC 1988 X Y Z BLC 1989 X Y Z BLC 1990 X Y Z BLC 1991 X Y Z F BLC 1992 X Y Z F BLC 1993 X Y Z F BLC 1994 X Y Z F BLC 1995 X Y Z F BLC 1996 X Y Z F BLC 1997 X Y Z F BLC 1998 X Y Z F BLC 1999 X Y Z F BLC 2000 X Y Z F BLC 2001 X Y Z F BLC 2002 X Y Z F BLC 2003 X Y Z F BLC 2004 X Y Z F BLC 2005 X Y Z F BLC 2006 X Y Z F BLC 2007 X Y Z F BLC 2008 X Y Z F BLC 2009 X Y Z F BLC 2010 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