Aurora Arc Probability Maps

The APL Auroral Particles and Images group has created a set of maps of the probability of observing discrete aurora under a variety of conditions (refer to Newell et al., JGR 1996; and Newell et al., Nature (in press), 1996 ) Read the binning descriptions that follow and select the gif image you want. If you need a run under some particular set of conditions for your research, contact Patrick.Newell@jhuapl.edu. Since the runs take about 2 days on our HP735 we do not guarantee we will run off your map.

Nature Article figures:: Figure 1a; Figure 1b; Figure 2

Maps not binned by season or by solar zenith angle:: Bz lt 0, threshold 1 erg/cm2s; Bz lt 0, threshold 5 erg/cm2s; no IMF binning, threshold 1/4 erg/cm2s; no IMF binning, threshold 5 erg/cm2s

Maps for solar zenith angle < 85 (light): 0.25 erg/cm2s threshold; 1 erg/cm2s threshold; 5 erg/cm2s threshold; 20 erg/cm2s threshold

Maps for solar zenith angle gt 90 (light): 0.25 erg/cm2s; 5 erg/cm2s

Map for solar zenith angle gt 100 (darkness): 5 erg/cm2s

Maps for solar zenith angle gt 110 (darkness): 1 erg/cm2s threshold; 1 erg/cm2s threshold with region 1 currents superposed; 5 erg/cm2s threshold; .25 erg/cm2s threshold

Map for solar zenith angle gt 120: 5 erg/cm2s threshold

Maps for the summer season (6 weeks centered around solstice): 0.25 ergs/cm2s; 5 ergs/cm2s; 10 ergs/cm2s

Maps for winter season (6 weeks centered around solstice): 0.25 erg/cm2s; 5 erg/cm2s; 10 erg/cm2s; Bz gt 0, 1 erg/cm2s

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