aacgmv2 1.0.13

A Python wrapper for AACGM-v2 magnetic coordinates

This is a Python wrapper for the AACGM-v2 C library, which allows converting between geographic and magnetic coordinates. The currently included version of the C library is 2.2. The wrapper is provided “as is” in the hopes that it will be useful to the space science community, and will not automatically be updated when new versions of the C library is released. MLT calculations are included in the wrapper (not part of the C library, please see the documentation for implementation details). The package is free software (MIT license).

Quick start

Install (requires NumPy):

pip install aacgmv2

Convert between AACGM and geographic coordinates:

>>> from aacgmv2 import convert
>>> from datetime import date
>>> # geo to AACGM, single numbers
>>> mlat, mlon = convert(60, 15, 300, date(2013, 11, 3))
>>> mlat
array(57.47207691280528)
>>> mlon
array(93.62138045643167)
>>> # AACGM to geo, mix arrays/numbers
>>> glat, glon = convert([90, -90], 0, 0, date(2013, 11, 3), a2g=True)
>>> glat
array([ 82.96656071, -74.33854592])
>>> glon
array([ -84.66516034,  125.84014944])

Convert between AACGM and MLT:

>>> from aacgmv2 import convert_mlt
>>> from datetime import datetime
>>> # MLT to AACGM
>>> mlon = convert_mlt([0, 12], datetime(2013, 11, 3, 18, 0), m2a=True)
>>> mlon
array([ 159.10097421,  339.10097421])

If you don’t know or use Python, you can also use the command line. See details in the full documentation.

Documentation

https://aacgmv2.readthedocs.org/

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Changelog

1.0.13 (2015-10-30)

• Correctly convert output of subsol() to geodetic coordinates (the error in MLT/mlon conversion was not large, typically two decimal places and below)

1.0.12 (2015-10-26)

• Return nan in forbidden region instead of throwing exception

1.0.11 (2015-10-26)

• Fix bug in subsolar/MLT conversion

1.0.10 (2015-10-08)

• No code changes, debugged automatic build/upload process and needed new version numbers along the way

1.0.0 (2015-10-07)

• Initial release