2.2.2 spase://VMO/NumericalData/WDC/Qeqertarsuaq/Magnetometer/PT1H/WDC_FORMAT Qeqertarsuaq Magnetometer 1-hr Data in WDC Format Godhavn Magnetometer 1-hr Data in WDC Format 2012-05-02T12:34:56.789 Qeqertarsuaq 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: Remote Sensing and Geomagnetism, Danish 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/Lars.W.Pedersen GeneralContact DataProducer spase://SMWG/Person/Juergen.Matzka 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/Godhavn/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/Qeqertarsuaq/Magnetometer MagneticField 1926-02-01T00:00:00.000 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 Qeqertarsuaq WDC Station Code: GDH 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 Qeqertarsuaq 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 Qeqertarsuaq Horzontal Magnetic Field Magnitude PT1H nT 10^9 >T Cylindrical CGM 0 70000 9999 Projection.IJ Magnetic North-South Horizontal Magnetic Field Component X Qeqertarsuaq 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 Qeqertarsuaq 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 Qeqertarsuaq 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 Qeqertarsuaq Magnetic Field Magnitude PT1H nT 10^9 >T 0 70000 9999 Magnitude Magnetic GDH 1926 X Y Z GDH 1927 X Y Z GDH 1928 X Y Z GDH 1929 X Y Z GDH 1930 X Y Z GDH 1931 X Y Z GDH 1932 X Y Z GDH 1933 X Y Z GDH 1934 X Y Z GDH 1935 X Y Z GDH 1936 X Y Z GDH 1937 X Y Z GDH 1938 X Y Z GDH 1939 X Y Z GDH 1940 X Y Z GDH 1941 X Y Z GDH 1942 X Y Z GDH 1943 X Y Z GDH 1944 X Y Z GDH 1945 X Y Z GDH 1946 X Y Z GDH 1947 X Y Z GDH 1948 X Y Z GDH 1949 X Y Z GDH 1950 X Y Z GDH 1951 X Y Z GDH 1952 X Y Z GDH 1953 X Y Z GDH 1954 X Y Z GDH 1955 X Y Z GDH 1956 X Y Z GDH 1957 X Y Z GDH 1958 X Y Z GDH 1959 X Y Z GDH 1960 X Y Z GDH 1961 X Y Z GDH 1962 X Y Z GDH 1963 X Y Z GDH 1964 X Y Z GDH 1965 X Y Z GDH 1966 X Y Z GDH 1967 X Y Z GDH 1968 X Y Z GDH 1969 X Y Z GDH 1970 X Y Z GDH 1971 X Y Z GDH 1972 X Y Z GDH 1973 X Y Z GDH 1974 X Y Z GDH 1975 X Y Z GDH 1976 X Y Z GDH 1977 X Y Z GDH 1978 X Y Z GDH 1979 X Y Z GDH 1980 X Y Z GDH 1981 X Y Z GDH 1982 X Y Z GDH 1983 X Y Z GDH 1984 X Y Z GDH 1985 X Y Z GDH 1986 X Y Z GDH 1987 X Y Z GDH 1988 X Y Z GDH 1989 X Y Z GDH 1990 X Y Z GDH 1991 X Y Z GDH 1992 X Y Z GDH 1993 X Y Z GDH 1994 X Y Z GDH 1995 D H Z GDH 1996 X Y Z GDH 1997 X Y Z GDH 1998 X Y Z GDH 1999 X Y Z GDH 2000 X Y Z GDH 2001 X Y Z GDH 2002 X Y Z GDH 2003 X Y Z GDH 2004 X Y Z GDH 2005 X Y Z F GDH 2006 X Y Z F GDH 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