Notes on 
"Tomographic reconstruction of 630.0 nm emission structure for a polar
cap arc"
by Doe, Kelly, Semeter and Steele

Abstract:
"in tandem" means in a fore-and-aft configuration; is this what we mean?
Perhaps "concurrently"?

1. Introduction
Paragraph 1, line 15: 
change "... evolution for the source ..." 
to "... evolution of the source ..."

Paragraph 3, lines 9-13: 
change "... constrains the timescale for changes in the magnetospheric
electron source and the timescale for thermospheric processes such as
plasma and atomic oxygen transport." 
to "... limits the time resolution with which the effects of changes in
the magnetospheric electron source and thermospheric processes such as
plasma and atomic oxygen transport may be observed."

2. Campaign Overview
Paragraph 1, line 5:
change "80.2° N, long. 274.1°" to "80.1° N, long. 273.6°"

Paragraph 1, line 15:
change "overlain" to "overlaid"

3. Image Photometric Calibration
Paragraph 2, line 3:
change "16-bit" to "14-bit"

Paragraph 3:
Expand discussion of how images were interpolated in time.

5. Discussion
Paragraph 3, line 7:
add an "s" to "remain"

Paragraph 3, line 15:
add a comma after "that is"

Paragraph 3, line 19:
"plasm" should be "plasma"

Paragraph 3, lines 18-21:
How sensitive is the bottomside shape to downward plasma transport? I
would have thought the dominance of O(1D) quenching would have made the
effects of reasonable amounts of downward transport hard to detect. What
do I mean by "reasonable"? - I don't know.

Paragraph 4, line 2:
recommend changing "315 km" to "300 km" since that's where the slope
departs from that of profiles 1 and 2

Paragraph 5, line 7:
change "auroral impact" to "auroral electron impact"

Paragraph 7, line 13:
change "effect the 350 to 500 km regime." 
to "model the 350 to 500 km regime correctly."

6. Conclusion
Paragraph 1, line 17:
"consistant" should be "consistent"

Paragraph 2, line 2:
change "radarwave" to "radiowave"

Acknowledgments.
change "grant XXX-XXXX." to "a CSA contract under the CNSR Transition
Program."

Figure 1:
The only real problem is that Eureka is not positioned symmetrically in 
the field of view. I would be satisfied if your illustrator could move
it outward, parallel to the 15 MLT meridian, to its correct PACE
latitude of 88.6 deg.

Plate 1:
change "for the evolution" to "of the evolution"?
change "overlaping" to "overlapping"