# Geomagnetic Field Calculators

info

Use the tool below to compute the model magnetic field for a given set of the GSW coordinates and date. There are two options: upload a file containing your input data or enter them in the form.

**This feature is under development, in case of any problems or questions please contact Dr. Andreeva.**

caution

If all $\mathcal{B_x}$, $\mathcal{B_y}$, $\mathcal{B_z}$ components are equal to 0, the point is outside of the model magnetopause. If all three components are equal to -99, there is no input OMNI data available for this date. The calculator works only for the years between 1995 and 2020 (both included) due to the availability of OMNI data.

- Upload the input file
- Fill in the form

### Upload the input file (suitable for a large data set)

- Select a model (to the present moment, the TS05, the TA15, and the RBF-based TA16 models are available).
- Compile an input file containing the date, the universal time (UT), and the X, Y, Z GSW coordinates. The radius of the Earth $R_E$ is used as the unit of measure for distance, $1~R_E =6371.2$ km. There are two options for the input:
- To calculate the total (external+internal) field, put
`iflag=1`

in the input file. Otherwise (iflag=0), only the external field will be calculated. Here we use the IGRF-13 magnetic field model for the internal field. - To obtain the result, click the button
*Submit request*. While waiting you can reload the page Then the calculation is done, you will be able to download the results in file`output.dat`

or`output.csv`

, in the same format as your input data, but with additional three columns containing model Bx, By, and Bz in the GSW system.

### Fill in the form (better for a few points)

- Select a model (to the present moment, the TS05, the TA15, and the RBF-based TA16 models are available).
- Enter the date, the universal time (UT), and the X, Y, Z GSW coordinates. The radius of the Earth $R_E$ is used as the unit of measure for distance, $1~R_E =6371.2$ km.
- To calculate the total (external+internal) field, mark the checkbox 'Total field'. Otherwise, only the external field will be calculated. Here we use the IGRF-13 magnetic field model for the internal field.
- To obtain the result, click on the button
*Submit request*. To add another point, click on the button*+ Add point*, enter the data, and click*Submit*.