Space Weather Database in Japan
Observation (CAWSESDB-J-OB0054)
Version 1.0 March 2006
(CAWSES SPACE-W Database in Japan)
Cosmic-Ray Neutron Data in 1953-2005
OB0054
| CAWSES (Climate And Weather of the Sun-Earth System) Space Weather Database in Japan Observation (CAWSESDB-J-OB0054) Version 1.0 March 2006 (CAWSES SPACE-W Database in Japan) Cosmic-Ray Neutron Data in 1953-2005 |
OB0054 |
This CD-ROM includes world-wide cosmic-ray neutron observations (one-hour fluxes) in 1953-2005, held by the World Data Center for Cosmic Rays*. Data are provided by text files in two formats; 80-bytes cardformat and 4096-byte longformat. The data structure of each format is shown in this booklet. Yearly plots for each stations in compressed PS files are also included in this CD-ROM. Yearly number of datasets is given also in this booklet. More detailed information on the database can be obtained from the home page of the WDC for Cosmic Rays:
http://www.env.sci.ibaraki.ac.jp/database/html/WDCCR/english.html
Inquiries about the database should be addressed to; Takashi Watanabe, Managing Director of WDC for Cosmic Rays (watanabe[AT]env.sci.ibaraki.ac.jp).
Acknowledgements:
Support for the production of CAWSES Database was provided by Grant-in-Aid for Publication of Scientific Research Results from Japan Society for the Promotion of Science (JSPS).
*The WDC for Cosmic Rays has been operated by the Department of Environmental Sciences, Ibaraki University, through the support of Solar-Terrestrial Environment Laboratory, Nagoya University.
Format of 80-byte (cardformat) Data of Cosmic-Ray Neutron
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bytes format notes
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1-6 A6 First six characters of station name
7-13 A7 Comments on data, e.g.:
N64 NM-64 neutron monitor
P Pressure-corrected data
C Counts
S Scaled counts
A Absolute values
14-15 I2 Year-1900
16-17 I2 Month
18-19 I2 Day
20 I1 1: 0-11h UT 2: 12-23h UT
22-80 12I5 Hourly data (99999: no data)
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The size of a one-year data set is fixed to 60264 bytes. Each month
has data for 31 days, and days with no data are filled by 99999.
So that, the number of days in a yearly data set is 31 x 12 = 372 days.
Format of 4096-Byte (longformat) Data of Cosmic-Ray Neutron
--------------------------------------------------------------------- bytes format notes
--------------------------------------------------------------------- 1-6 A6 First six characters of station name 7-13 A7 Comments on data, e.g.: N64 NM-64 neutron monitor P Pressure-corrected data C Counts S Scaled counts A Absolute values 14 I1 1: Hourly data 2: Two-hour data 15-16 I2 Year-1900 17-18 I2 Month 19-46 4F7.2 ĦĦLatitude, Longitude, Altitude, Vertical cut-off rigidity 47-74 4F7.1 Scaling Factor(SF),UT of the beginning of the first data of a given day (for 1-hour data measured in the interval from 00:00 to 01:00, this value is 0), Constant to be added to the tabulated data, Monthly average Real Count= (tabulated value+Constant)*SF 75-364 A290 Information for data usage (see below) 365-370 A6 Warning for discontinuity in monthly data 371-376 3I2 Date of revision (YYMMDD) 377-4096 744I5 Hourly data (24 x 31=744). 99999: no data --------------------------------------------------------------------------------
Yearly Number of Data Sets Held by the WDC for Cosmic rays
YEAR NUMBER OF STATIONS
0 10 20 30 40 50 60 70
-----|---------|---------|---------|---------|---------|---------|---------|
1953 |**
1954 |***
1955 |****
1956 |*****
1957 |******************************************
1958 |****************************************************
1959 |****************************************************
1960 |*****************************************
1961 |*******************************************
1962 |*******************************************
1963 |************************************************
1964 |*****************************************************************
1965 |**************************************************************
1966 |************************************************************
1967 |*************************************************************
1968 |*************************************************************
1969 |***************************************************************
1970 |***********************************************************
1971 |***************************************************************
1972 |*********************************************************
1973 |********************************************************
1974 |***************************************************
1975 |***************************************************
1976 |*************************************************
1977 |**************************************************
1978 |***********************************************
1979 |******************************************
1980 |*******************************************
1981 |**********************************************
1982 |*******************************************
1983 |*******************************************
1984 |******************************************
1985 |*********************************************
1986 |**********************************************
1987 |**********************************************
1988 |*********************************************
1989 |*******************************************
1990 |******************************************
1991 |***********************************************
1992 |********************************************
1993 |******************************************
1994 |***************************************
1995 |***************************************
1996 |************************************
1997 |***************************************
1998 |******************************************
1999 |****************************************
2000 |**************************************
2001 |****************************************
2002 |***************************************
2003 |****************************************
2004 |****************************************
2005 |*************************************
-----|---------|---------|---------|---------|---------|---------|---------|