2.2.2 spase://VMO/NumericalData/WDC/Sheshan/Magnetometer/PT1H/WDC_FORMAT Sheshan Magnetometer 1-hr Data in WDC Format Zo-Se Magnetometer 1-hr Data in WDC Format 2012-05-02T12:34:56.789 Sheshan Magnetometer data, 1-hr time resoluion, in WDC format. Magnetic Field Vector Element List: DHZF. 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: State Seismological Bureau, Beijing, China 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/Dong-Mei.Yang GeneralContact DataProducer spase://SMWG/Person/Suqin.Zhang 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/Zo.Se/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/Sheshan/Magnetometer MagneticField 1932-06-01T00:00:00.000 2006-12-31T23:00:00.000 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 Sheshan WDC Station Code: SSH 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 Sheshan 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 Sheshan Horzontal Magnetic Field Magnitude PT1H nT 10^9 >T Cylindrical CGM 0 70000 9999 Projection.IJ Magnetic Vertical Magnetic Field Component Z Sheshan 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 Sheshan Magnetic Field Magnitude PT1H nT 10^9 >T 0 70000 9999 Magnitude Magnetic SSH 1932 Z SSH 1933 D H Z SSH 1934 D H Z SSH 1935 D H Z SSH 1936 D H Z SSH 1937 D H Z SSH 1938 D H Z SSH 1939 D H Z SSH 1940 D H Z SSH 1950 D H Z SSH 1951 D H Z SSH 1952 D H Z SSH 1953 D H Z SSH 1954 D H Z SSH 1955 D H Z SSH 1956 D H Z SSH 1957 D H Z SSH 1958 D H Z SSH 1959 D H Z SSH 1960 D H Z SSH 1961 D H Z SSH 1962 D H Z SSH 1963 D H Z SSH 1964 D H Z SSH 1965 D H Z SSH 1966 D H Z SSH 1967 D H Z SSH 1968 D H Z SSH 1969 D H Z SSH 1970 D H Z SSH 1971 D H Z SSH 1972 D H Z SSH 1973 D H Z SSH 1974 D H Z SSH 1975 D H Z SSH 1976 D H Z SSH 1977 D H Z SSH 1978 D H Z SSH 1979 D H Z SSH 1980 D H Z SSH 1981 D H Z SSH 1982 D H Z SSH 1983 D H Z SSH 1984 D H Z SSH 1985 D H Z SSH 1986 D H Z SSH 1987 D H Z SSH 1995 D H Z SSH 1996 D H Z SSH 1997 D H Z SSH 1998 D H Z SSH 1999 D H Z SSH 2000 D H Z SSH 2001 D H Z SSH 2002 D H Z SSH 2005 D H Z F SSH 2006 D H 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