Geomagnetic
Parser for getting Earth magnetic field parameters from Space Weather Prediction Center - http://www.swpc.noaa.gov/.
Description
This is simple pure nodejs data scrapper, that grabs data primary and secondary Goes Magnetometers and parses them as array.
Usage
var geomagnetic = ; geomagnetic; geomagnetic;
will return something like:
timestamp: 1399158180000 time: Sun May 04 2014 03:03:00 GMT+ Hp: 637 He: 752 Hn: -773 total: 988 units: 'nanotesla (nT)' timestamp: 1399158240000 time: Sun May 04 2014 03:04:00 GMT+ Hp: 644 He: 762 Hn: -904 total: 100 units: 'nanotesla (nT)' timestamp: 1399158300000 time: Sun May 04 2014 03:05:00 GMT+ Hp: 645 He: 771 Hn: -951 total: 101 units: 'nanotesla (nT)'
The data is an array of objects with 4 fields:
timestamp
- unix timestamp of moment when current measures are taken
time
- javascript object of Date of moment when current measures are taken
Hp
- component perpendicular to the satellite orbital plane or parallel to the Earth's spin axis
He
- component perpendicular to Hp and directed earthwards
Hn
- component perpendicular to both Hp and He, directed eastwards
total
- absolute value of magnetic field - sqrt(Hp^2+He^2+Hn^2).
All data have units in nanoteslas
- nT.
Note 1: total
is probably measured by omni directional solenoid system,
not counted from He, Hp, Hn, so there is <5% discrepance.
Note 2: sometimes there is -100000 values for magnetic fields magnitutes. This is probably the error in data transfer or a way to show that data was not properly acquired. So, the user of library can simply negate this values.
Copyright
The MIT License (MIT)
Copyright (c) 2013 Anatolij Ostroumov ostroumov095 at gmail dot com
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.