OCB Boundary Correction¶
Many high-latitude boundaries are related to each other. Both the poleward
edge of the auroral oval and the R1/R2 current boundary have been successfully
related to the OCB. If you have a data set of boundaries that can be related
to the OCB, OCBpy is capable of applying this correction as a function of MLT.
These corrections are applied using the rfunc
and
rfunc_kwargs
keyword arguments in
OCBoundary
object. Several correction functions
are provided as a part of ocbpy.ocb_correction
module.
OCB Correction Module¶
Functions that specify the boundary location as a function of MLT
References
[4] | (1, 2) Burrell, A. G. et al.: AMPERE Polar Cap Boundaries, Ann. Geophys., 38, 481-490, doi:10.5194/angeo-38-481-2020, 2020. |
[6] | Chisham, G. et al.: Ionospheric Boundaries Derived from Auroral Images, in prep, 2022. |
-
ocbpy.ocb_correction.
circular
(mlt, r_add=0.0)[source]¶ Return a circular boundary correction.
Parameters: Returns: r_corr – Radius correction in degrees at this MLT
Return type: float or array-like
-
ocbpy.ocb_correction.
elliptical
(mlt, instrument='ampere', method='median')[source]¶ Return the results of an elliptical correction to the data boundary.
Parameters: Returns: r_corr – Radius correction in degrees at this MLT
Return type: float or array-like
References
Prefered AMPERE boundary correction validated in [4].
-
ocbpy.ocb_correction.
harmonic
(mlt, instrument='ampere', method='median')[source]¶ Return the results of a harmonic fit correction to the data boundary.
Parameters: Returns: r_corr – Radius correction in degrees at this MLT
Return type: float or array-like
References
AMPERE boundaries obtained from [4]. IMAGE boundaries obtained from [6].