You may donwload IMAGE magnetometer data from IMAGE server with unix wget command. The url is:
You must specify three obligatory
|starttime||Start time of the data set. Format: YYYYMMDD[HH].|
|length||Event length in minutes. Min = 60, max = 14400 (= 10 days).|
|format||Data file format. Possible values are :
In addition there are some optional
|stations||List of stations included in data files or plots. Default = All stations.|
The list is a string of three-letter station ID codes separated by an underscrore '_'. E.g. "TRO_SOD_NUR".
Some predefined sets may be used:
- PPN-SOR : Line of stations from PPN to SOR.
- PPN-NAL : Line of stations from PPN to NAL.
- SVALBARD : Stations on or near Svalbard (NAL LYR HOP HOR BJN)
- FENNOSCANDIA : Stations on continental Norway, Sweden and Finland
- 66-71 : Stations between geographic latitudes 66° and 71°.
|sample_rate||Time resolution in seconds used in data files and plots. Default = 10.|
Note: With IAGA files the time resolution is always at least 1 minute. With WDC files the time resolution is always 1 minute.
|compress||If inluded in parameter list then the data file is compressed (gzip). Image files (jpg) are not compressed.|
With magnetometer stack plot files (format = 'jpg') one may specify also:
|component||Magnetic component, either X,Y or Z. Default = 'X'.|
|scale||Scale (in nT) used in stackplots. Default = 'auto'.|
: Download 1-minute IMAGE data in IAGA format for 3 days starting on March 5th, 2018. Include all stations. Store the data into file 'image_20180305.iaga'.
wget -q "https://space.fmi.fi/image/www/data_download.php?starttime=20180305&length=4320&format=iaga&sample_rate=60" -O image_20180305.iaga
: Download stack plot of Y component for stations along PPN-NAL line for 10 days with 10-minute resolution starting on October 10th, 2019. Store the image into file 'image_20191010.Y.jpg'.
wget -q "https://space.fmi.fi/image/www/data_download.php?starttime=20191010&length=14400&format=jpg&sample_rate=600&component=Y&scale=600&stations=PPN-NAL" -O image_20191010.Y.jpg
Note: The event must not cross the midnight between 31 Oct 1992 and 01 Nov 1992, when the time resolution of the data changes from 20 s to 10 s. An error message is returned in such a case.