## Geomagnetism |

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Values are computed using the current World Magnetic Model. Values are estimates based on the WMM2010 and are generally accurate to within 30 minutes of arc for D and I and 100-250 nT for the force elements (F, H, Z, X, and Y).

**Location**(latitude and longitude), entered in*degrees, minutes, and seconds*. All three boxes must be filled for computation.

note: If you do not know your latitude and longitude and you live in the United States, enter your location in the box provided and use the "**Go**" button.**Elevation**(recommended for aircraft and satellite use) in feet, meters, or kilometers above WGS-84 reference ellipsoid. Elevation values are valid down to -10 km. Use the radio button to choose an appropriate unit.**Date**in Year, Month, Day (form defaults to the current day).- To compute your field values, hit the
**Compute!**button. The calculator will also compute values upon hitting the**Go**button.

- Declination (D) positive east, in decimal degrees

Annual change (dD) positive east, in decimal minutes per year - Inclination (I) positive down, in decimal degrees

Annual change (dI) positive down, in decimal minutes per year - Horizontal Intensity (H), in nanoTesla

Annual change (dH) in nanoTesla per year - North Component of H (X), positive north, in nanoTesla

Annual change (dX) in nanoTesla per year - East Component of H (Y), positive east, in nanoTesla

Annual change (dY) in nanoTesla per year - Vertical Intensity (Z), positive down, in nanoTesla

Annual change (dZ) in nanoTesla per year - Total Field (F), in nanoTesla

Annual change (dF) in nanoTesla per year

Last modified: Wednesday, 12-Feb-2013 10:22:11 MST