2.2.2 spase://VMO/NumericalData/WDC/Meanook/Magnetometer/PT1H/WDC_FORMAT Meanook Magnetometer 1-hr Data in WDC Format 2012-05-02T12:34:56.789 Meanook 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/Meanook/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/Meanook/Magnetometer MagneticField 1932-01-01T00:00:00.000 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 Meanook WDC Station Code: MEA 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 Meanook 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 Meanook Horzontal Magnetic Field Magnitude PT1H nT 10^9 >T Cylindrical CGM 0 70000 9999 Projection.IJ Magnetic North-South Horizontal Magnetic Field Component X Meanook 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 Meanook 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 Meanook 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 Meanook Magnetic Field Magnitude PT1H nT 10^9 >T 0 70000 9999 Magnitude Magnetic MEA 1932 D H Z MEA 1933 D H Z MEA 1934 D H Z MEA 1935 D H Z MEA 1936 D H Z MEA 1937 D H Z MEA 1938 D H Z MEA 1939 D H Z MEA 1940 D H Z MEA 1941 D H Z MEA 1942 D H Z MEA 1943 D H Z MEA 1944 D H Z MEA 1945 D H Z MEA 1946 D H Z MEA 1947 D H Z MEA 1948 D H Z MEA 1949 D H Z MEA 1950 D H Z MEA 1951 D H Z MEA 1952 D H Z MEA 1953 D H Z MEA 1954 D H Z MEA 1955 D H Z MEA 1956 D H Z MEA 1957 D H Z MEA 1958 D H Z MEA 1959 D H Z MEA 1960 D H Z MEA 1961 D H Z MEA 1962 D H Z MEA 1963 D H Z MEA 1964 D H Z MEA 1965 D H Z MEA 1966 D H Z MEA 1967 D H Z MEA 1968 D H Z MEA 1969 D H Z MEA 1970 D H Z MEA 1971 D H Z MEA 1972 D H Z MEA 1973 X Y Z MEA 1974 X Y Z MEA 1975 X Y Z MEA 1976 X Y Z MEA 1977 X Y Z MEA 1978 X Y Z F MEA 1979 X Y Z F MEA 1980 X Y Z MEA 1981 X Y Z MEA 1982 X Y Z MEA 1983 X Y Z MEA 1984 X Y Z MEA 1985 X Y Z MEA 1986 X Y Z MEA 1987 X Y Z MEA 1988 X Y Z MEA 1989 X Y Z MEA 1990 X Y Z MEA 1991 X Y Z F MEA 1992 X Y Z F MEA 1993 X Y Z F MEA 1994 X Y Z F MEA 1995 X Y Z F MEA 1996 X Y Z F MEA 1997 X Y Z F MEA 1998 X Y Z F MEA 1999 X Y Z F MEA 2000 X Y Z F MEA 2001 X Y Z F MEA 2002 X Y Z F MEA 2003 X Y Z F MEA 2004 X Y Z F MEA 2005 X Y Z F MEA 2006 X Y Z F MEA 2007 X Y Z F MEA 2008 X Y Z F MEA 2009 X Y Z F MEA 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