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A Review of Radio Observations of the Giant Planets: Probing the Composition, Structure, and Dynamics of Their Deep Atmospheres
 
 
Review
Peer-Review Record

Mid-Infrared Observations of the Giant Planets

Remote Sens. 2023, 15(7), 1811; https://doi.org/10.3390/rs15071811
by Michael T. Roman 1,2
Reviewer 1:
Reviewer 2: Anonymous
Remote Sens. 2023, 15(7), 1811; https://doi.org/10.3390/rs15071811
Submission received: 26 November 2022 / Revised: 27 February 2023 / Accepted: 2 March 2023 / Published: 28 March 2023
(This article belongs to the Special Issue Remote Sensing Observations of the Giant Planets)

Round 1

Reviewer 1 Report

Use the Word file below. Special symbols have been altered in the text here.

 

M. Roman Mid-IR Giant Planet Remote Sensing review

 

This is an excellent review paper with nearly 300 references. This should provide a valuable resource for planetary scientists observing or modeling the giant planets in the thermal infrared. This paper should be published after taking account the comments below. Although numerous, these comments are minor in scope. They involve correcting grammar, fixing typos, and adding or changing references. They do not require altering the structure of the paper, which is very well organized.

 

Line by line comments: Lxx refers to comment on Line xx

 

5 has benefitted from

19 A Historical Overview

50 Funny limerick!

61 Venus (not the Venus)

170 prinn references

195  4.2 mm to 55 mm (180 and 2400 cm-1) fix superscript

197 March 1979

201 ref 104 is correct (remove ?)

204 cite Kim et al 1985 ref 104 for C2H4, C3H4, & C6H6

250-251 Unlike the PPR on Galileo, CIRS was equipped with a state-of-the-art thermal infrared spectrometer (Galileo had NIMS, also in the IR)

259 C2H2 and C2H6 cite Nixon et al 2007 (they measured both hydrocarbons)

263 Ref 162 Nixon et al 2008 is a Titan paper

283 CO2 on Neptune was reported in Feuchtgruber et al 1997 (ref 179 Encrenaz et al is a Uranus C2H2 paper)

@ARTICLE{1997Natur.389..159F,

       author = {{Feuchtgruber}, H. and {Lellouch}, E. and {de Graauw}, T. and {B{\'e}zard}, B. and {Encrenaz}, T. and {Griffin}, M.},

        title = "{External supply of oxygen to the atmospheres of the giant planets}",

      journal = {\nat},

         year = 1997,

        month = sep,

       volume = {389},

       number = {6647},

        pages = {159-162},

          doi = {10.1038/38236},

       adsurl = {https://ui.adsabs.harvard.edu/abs/1997Natur.389..159F},

      adsnote = {Provided by the SAO/NASA Astrophysics Data System}

}

288 followed by

289 micron symbol mm (not m)

295 reference?

302 resolving powers

312 in the late 1980s and 1990s add Gezari et al 1989 reference

@ARTICLE{1989Natur.342..777G,

       author = {{Gezari}, D.~Y. and {Mumma}, M.~J. and {Espenak}, F. and {Deming}, D. and {Bjoraker}, G. and {Woods}, L. and {Folz}, W.},

        title = "{New features in Saturn's atmosphere revealed by high-resolution thermal infrared images}",

      journal = {\nat},

     keywords = {Astronomical Spectroscopy, Infrared Imagery, Saturn Atmosphere, Spectrum Analysis, Ethane, Temperature Inversions, Vibrational Spectra, Lunar and Planetary Exploration},

         year = 1989,

        month = dec,

       volume = {342},

       number = {6251},

        pages = {777-780},

          doi = {10.1038/342777a0},

       adsurl = {https://ui.adsabs.harvard.edu/abs/1989Natur.342..777G},

      adsnote = {Provided by the SAO/NASA Astrophysics Data System}

}

312 add Hoffmann et al 1994 reference

@ARTICLE{1994InPhT..35..175H,

       author = {{Hoffmann}, William F. and {Fazio}, Giovanni G. and {Shivanandan}, Kandiah and {Hora}, Joseph L. and {Deutsch}, Lynne K.},

        title = "{Astronomical observations with the Mid-Infrared Array Camera, MIRAC}",

      journal = {Infrared Physics and Technology},

         year = 1994,

        month = mar,

       volume = {35},

       number = {2-3},

        pages = {175-194},

          doi = {10.1016/1350-4495(94)90079-5},

       adsurl = {https://ui.adsabs.harvard.edu/abs/1994InPhT..35..175H},

      adsnote = {Provided by the SAO/NASA Astrophysics Data System}

}

328 reference 206?

345 Figures 1 and 2 display spectra and images of the giant planets obtained from mid-IR instrumentation. Figure 1 compares …

347 reference

348 in three key N- and Q-band mid-infrared windows

Fig 2 caption: state that north is up for all planets, including Uranus.

368 reference

398 seasonal (typo)

414 Figure?? should be Figure 3 on page 12

418 10^-3 not 10^3

Fig. 3 caption (derived from Fig. 4) does not match figure. This is not a contour plot. It shows the T,P profile and cloud condensation levels for the 4 outer planets.

440 CO2 on Jupiter ref 231 is wrong - use Feuchtgruber et al 1997 shown in comment to L283

443-44 ref 249? and ref 188?

447, 449 ref 250 is blank on line 1316 cite Sinclair et al. 2020 see ref below

@ARTICLE{2020PSJ.....1...85S,

       author = {{Sinclair}, James A. and {Greathouse}, Thomas K. and {Giles}, Rohini S. and {Antu{\~n}ano}, Arrate and {Moses}, Julianne I. and {Fouchet}, Thierry and {B{\'e}zard}, Bruno and {Tao}, Chihiro and {Mart{\'\i}n-Torres}, Javier and {Clark}, George B. and {Grodent}, Denis and {Orton}, Glenn S. and {Hue}, Vincent and {Fletcher}, Leigh N. and {Irwin}, Patrick G.~J.},

        title = "{Spatial Variations in the Altitude of the CH$_{4}$ Homopause at Jupiter's Mid-to-high Latitudes, as Constrained from IRTF-TEXES Spectra}",

      journal = {\psj},

     keywords = {Atmospheric circulation, Aeronomy, Jupiter, Infrared astronomy, Planetary atmospheres, Planetary magnetosphere, Planetary polar regions, High resolution spectroscopy, 112, 22, 873, 786, 1244, 997, 1251, 2096},

         year = 2020,

        month = dec,

       volume = {1},

       number = {3},

          eid = {85},

        pages = {85},

          doi = {10.3847/PSJ/abc887},

       adsurl = {https://ui.adsabs.harvard.edu/abs/2020PSJ.....1...85S},

      adsnote = {Provided by the SAO/NASA Astrophysics Data System}

}

466 And,

467 need a verb: demonstrate or show

480-481 at the sensed pressure range

499 Brighter at which wavelength? Not optical. Try: Areas that are brighter in the thermal infrared (see Figure 2) are warmer…

501 The temperature structure … is shown in Figure 4. (subject is structure, not spectra)

Fig. 4 caption: ref 163 is Saturn, not Jupiter. Use ref 147 Fletcher 2009 instead.

506 Add a Jupiter cloud tracking reference Tollefson et al 2017 (delete Porco 2005 Saturn?)

@ARTICLE{2017Icar..296..163T,

       author = {{Tollefson}, Joshua and {Wong}, Michael H. and {Pater}, Imke de and {Simon}, Amy A. and {Orton}, Glenn S. and {Rogers}, John H. and {Atreya}, Sushil K. and {Cosentino}, Richard G. and {Januszewski}, William and {Morales-Juber{\'\i}as}, Ra{\'u}l and {Marcus}, Philip S.},

        title = "{Changes in Jupiter's Zonal Wind Profile preceding and during the Juno mission}",

      journal = {\icarus},

         year = 2017,

        month = nov,

       volume = {296},

        pages = {163-178},

          doi = {10.1016/j.icarus.2017.06.007},

       adsurl = {https://ui.adsabs.harvard.edu/abs/2017Icar..296..163T},

      adsnote = {Provided by the SAO/NASA Astrophysics Data System}

}

516 results

518 aerosol scattering

524 poles, which measure (Achterberg et al. studied both north and south poles; Fletcher N Pole)

526 three filtered images in Figure 2

529 section [] should be 3.3.2

533 than do; ref 269??

547 12 mm (add space)

549 sensed; 235 is ok but add Ref 236 Moses et al. to Uranus & Neptune here and L670 & L702 in variability section.

549 However, (don’t start a sentence with But)

550 appears (remove “it”)

551-552 appear (remove “to”)

Fig. 5 show (on figure or in caption) where the equator and poles are (Uranus is tipped on its side). Compared with Roman et al 2020, it appears that the images have been rotated with north pole up: state that north is up in the caption.

562 see Figure 5.

565 cannot be strongly constrained

566 of the data

570 from below

577 the lack of data is limiting (subject is lack, not data)

593 (see Figure 6). add parenthesis

Fig. 6 caption via ~7.9-mm methane emission

605 the sources of such oscillations are not definitely known (subject is sources, not oscillations)

616 The Cassini spacecraft orbited Saturn for 13 years (Cassini did not orbit the system; Huygens landed on Titan)

619 as this region emerged

620 cooled by; (see Figure 7)

626-627 in southern mid-autumn (2012) refs [268, 286];  late northern spring (2015)

[this is based on Fig. 4 of Fletcher 2018 ref 268 rather than ref 286 which was too early to see the formation of the northern vortex]

628 degrees symbol

629 this feature exhibited a hexagonal boundary

631 separated by 300 km

632 Fletcher et al. (remove comma)

633 seasonal phenomena

636 warming the localized region by 80 K compared with its surroundings

639 to explain

640-642 elevated temperatures alone could not explain the enhanced thermal emission from ethane and acetylene. Downward winds transporting hydrocarbons were also needed to reproduce the CIRS observations.

650 degrees symbol

655 Conrath et al. (remove comma)

657 to be significantly (add be and fix typo)

662-663 at the tropopause

669 time constants should be shorter in the stratosphere due to lower pressures (0.1 to 1 mbar vs 100-400 mbar in the troposphere). This applies to all the giant planets.

670 add reference 236 Moses et al hydrocarbon seasonal model for Uranus & Neptune

676 will be needed

692-693 predicted that temperatures should rise

696 inferred from nearly contemporaneous

701 The cause of these stratospheric temperature changes is currently unknown (subject is cause, not changes)

702 Roman et al. (remove comma); add ref 236 Moses et al hydrocarbon seasonal model for Uranus & Neptune

709 Remove ??.; remote sensing at mid-IR wavelengths a remarkably detailed picture (add at mid-IR wavelengths and remove comma)

 

 

Comments for author File: Comments.pdf

Author Response

  1. Roman Mid-IR Giant Planet Remote Sensing review
    This is an excellent review paper with nearly 300 references. This should provide a valuable
    resource for planetary scientists observing or modeling the giant planets in the thermal
    infrared. This paper should be published after taking account the comments below. Although
    numerous, these comments are minor in scope. They involve correcting grammar, fixing typos,
    and adding or changing references. They do not require altering the structure of the paper,
    which is very well organized.

 

 

Thank you for the kind comments and many helpful corrections, particularly those where the reference was erroneous. The manuscript has now been revised and expanded, with many new figures and several new sections.

 

I’ve addressed the following comments:


Line by line comments: Lxx refers to comment on Line xx
5 has benefitted from
19 A Historical Overview
50 Funny limerick!
61 Venus (not the Venus)
170 prinn references
195 4.2 mm to 55 mm (180 and 2400 cm-1) fix superscript
197 March 1979
201 ref 104 is correct (remove ?)
204 cite Kim et al 1985 ref 104 for C2H4, C3H4, & C6H6
250-251 Unlike the PPR on Galileo, CIRS was equipped with a state-of-the-art thermal infrared
spectrometer (Galileo had NIMS, also in the IR)

 

I’ve revised this section to include discussion of NIMS and VIMS.

 


259 C2H2 and C2H6 cite Nixon et al 2007 (they measured both hydrocarbons)
263 Ref 162 Nixon et al 2008 is a Titan paper
283 CO2 on Neptune was reported in Feuchtgruber et al 1997 (ref 179 Encrenaz et al is a
Uranus C2H2 paper)
@ARTICLE{1997Natur.389..159F,
author = {{Feuchtgruber}, H. and {Lellouch}, E. and {de Graauw}, T. and {B{\'e}zard}, B. and
{Encrenaz}, T. and {Griffin}, M.},
title = "{External supply of oxygen to the atmospheres of the giant planets}",
journal = {\nat},
year = 1997,
month = sep,
volume = {389},
number = {6647},
pages = {159-162},
doi = {10.1038/38236},
adsurl = {https://ui.adsabs.harvard.edu/abs/1997Natur.389..159F},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
288 followed by
289 micron symbol mm (not m)
295 reference?
302 resolving powers

312 in the late 1980s and 1990s add Gezari et al 1989 reference
@ARTICLE{1989Natur.342..777G,
author = {{Gezari}, D.~Y. and {Mumma}, M.~J. and {Espenak}, F. and {Deming}, D. and
{Bjoraker}, G. and {Woods}, L. and {Folz}, W.},
title = "{New features in Saturn's atmosphere revealed by high-resolution thermal infrared
images}",
journal = {\nat},
keywords = {Astronomical Spectroscopy, Infrared Imagery, Saturn Atmosphere, Spectrum
Analysis, Ethane, Temperature Inversions, Vibrational Spectra, Lunar and Planetary
Exploration},
year = 1989,
month = dec,
volume = {342},
number = {6251},
pages = {777-780},
doi = {10.1038/342777a0},
adsurl = {https://ui.adsabs.harvard.edu/abs/1989Natur.342..777G},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
312 add Hoffmann et al 1994 reference
@ARTICLE{1994InPhT..35..175H,
author = {{Hoffmann}, William F. and {Fazio}, Giovanni G. and {Shivanandan}, Kandiah and
{Hora}, Joseph L. and {Deutsch}, Lynne K.},
title = "{Astronomical observations with the Mid-Infrared Array Camera, MIRAC}",
journal = {Infrared Physics and Technology},
year = 1994,
month = mar,
volume = {35},
number = {2-3},
pages = {175-194},
doi = {10.1016/1350-4495(94)90079-5},
adsurl = {https://ui.adsabs.harvard.edu/abs/1994InPhT..35..175H},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
328 reference 206?

 

I have added the above references as suggested.

 

The follow language suggestions, corrections, and references have been adopted. Thanks!


345 Figures 1 and 2 display spectra and images of the giant planets obtained from mid-IR
instrumentation. Figure 1 compares ...
347 reference
348 in three key N- and Q-band mid-infrared windows
Fig 2 caption: state that north is up for all planets, including Uranus.
368 reference
398 seasonal (typo)
414 Figure?? should be Figure 3 on page 12
418 10^-3 not 10^3

Fig. 3 caption (derived from Fig. 4) does not match figure. This is not a contour plot. It shows
the T,P profile and cloud condensation levels for the 4 outer planets.
440 CO2 on Jupiter ref 231 is wrong - use Feuchtgruber et al 1997 shown in comment to L283
443-44 ref 249? and ref 188?
447, 449 ref 250 is blank on line 1316 cite Sinclair et al. 2020 see ref below
@ARTICLE{2020PSJ.....1...85S,
author = {{Sinclair}, James A. and {Greathouse}, Thomas K. and {Giles}, Rohini S. and
{Antu{\~n}ano}, Arrate and {Moses}, Julianne I. and {Fouchet}, Thierry and {B{\'e}zard}, Bruno
and {Tao}, Chihiro and {Mart{\'\i}n-Torres}, Javier and {Clark}, George B. and {Grodent}, Denis
and {Orton}, Glenn S. and {Hue}, Vincent and {Fletcher}, Leigh N. and {Irwin}, Patrick G.~J.},
title = "{Spatial Variations in the Altitude of the CH$_{4}$ Homopause at Jupiter's Mid-to-
high Latitudes, as Constrained from IRTF-TEXES Spectra}",
journal = {\psj},
keywords = {Atmospheric circulation, Aeronomy, Jupiter, Infrared astronomy, Planetary
atmospheres, Planetary magnetosphere, Planetary polar regions, High resolution spectroscopy,
112, 22, 873, 786, 1244, 997, 1251, 2096},
year = 2020,
month = dec,
volume = {1},
number = {3},
eid = {85},
pages = {85},
doi = {10.3847/PSJ/abc887},
adsurl = {https://ui.adsabs.harvard.edu/abs/2020PSJ.....1...85S},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
466 And,
467 need a verb: demonstrate or show
480-481 at the sensed pressure range
499 Brighter at which wavelength? Not optical. Try: Areas that are brighter in the thermal
infrared (see Figure 2) are warmer...
501 The temperature structure ... is shown in Figure 4. (subject is structure, not spectra)
Fig. 4 caption: ref 163 is Saturn, not Jupiter. Use ref 147 Fletcher 2009 instead.
506 Add a Jupiter cloud tracking reference Tollefson et al 2017 (delete Porco 2005 Saturn?)
@ARTICLE{2017Icar..296..163T,
author = {{Tollefson}, Joshua and {Wong}, Michael H. and {Pater}, Imke de and {Simon}, Amy
A. and {Orton}, Glenn S. and {Rogers}, John H. and {Atreya}, Sushil K. and {Cosentino}, Richard
G. and {Januszewski}, William and {Morales-Juber{\'\i}as}, Ra{\'u}l and {Marcus}, Philip S.},
title = "{Changes in Jupiter's Zonal Wind Profile preceding and during the Juno mission}",
journal = {\icarus},
year = 2017,
month = nov,
volume = {296},
pages = {163-178},

doi = {10.1016/j.icarus.2017.06.007},
adsurl = {https://ui.adsabs.harvard.edu/abs/2017Icar..296..163T},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
516 results
518 aerosol scattering
524 poles, which measure (Achterberg et al. studied both north and south poles; Fletcher N
Pole)
526 three filtered images in Figure 2
529 section [] should be 3.3.2
533 than do; ref 269??
547 12 mm (add space)
549 sensed; 235 is ok but add Ref 236 Moses et al. to Uranus & Neptune here and L670 & L702
in variability section.
549 However, (don’t start a sentence with But)
550 appears (remove “it”)
551-552 appear (remove “to”)
Fig. 5 show (on figure or in caption) where the equator and poles are (Uranus is tipped on its
side). Compared with Roman et al 2020, it appears that the images have been rotated with
north pole up: state that north is up in the caption.
562 see Figure 5.
565 cannot be strongly constrained
566 of the data
570 from below
577 the lack of data is limiting (subject is lack, not data)
593 (see Figure 6). add parenthesis
Fig. 6 caption via ~7.9-mm methane emission
605 the sources of such oscillations are not definitely known (subject is sources, not
oscillations)
616 The Cassini spacecraft orbited Saturn for 13 years (Cassini did not orbit the system;
Huygens landed on Titan)
619 as this region emerged
620 cooled by; (see Figure 7)
626-627 in southern mid-autumn (2012) refs [268, 286]; late northern spring (2015)
[this is based on Fig. 4 of Fletcher 2018 ref 268 rather than ref 286 which was too early to see
the formation of the northern vortex]
628 degrees symbol
629 this feature exhibited a hexagonal boundary
631 separated by 300 km
632 Fletcher et al. (remove comma)
633 seasonal phenomena
636 warming the localized region by 80 K compared with its surroundings
639 to explain

640-642 elevated temperatures alone could not explain the enhanced thermal emission from
ethane and acetylene. Downward winds transporting hydrocarbons were also needed to
reproduce the CIRS observations.
650 degrees symbol
655 Conrath et al. (remove comma)
657 to be significantly (add be and fix typo)
662-663 at the tropopause


669 time constants should be shorter in the stratosphere due to lower pressures (0.1 to 1 mbar
vs 100-400 mbar in the troposphere). This applies to all the giant planets.

 

Yes, but the calculations from Li et al and Conrath et al both have Uranus with longer radiative time constants in the stratosphere.  I have expanded this section and added a figure.


670 add reference 236 Moses et al hydrocarbon seasonal model for Uranus & Neptune
676 will be needed
692-693 predicted that temperatures should rise
696 inferred from nearly contemporaneous
701 The cause of these stratospheric temperature changes is currently unknown (subject is
cause, not changes)
702 Roman et al. (remove comma); add ref 236 Moses et al hydrocarbon seasonal model for
Uranus & Neptune
709 Remove ??.; remote sensing at mid-IR wavelengths a remarkably detailed picture (add at
mid-IR wavelengths and remove comma)

 

Thank you once again for the many helpful corrections and edits.

Reviewer 2 Report

The history is well written and engaging, with an impressive 287 references.  Unfortunately, this is a very rough draft with dozens of typos, some of which are indicated below.  The review should be publishable after copyediting and addressing the following minor concerns.

 

The review needs more figures, for example, choice examples of the different types of detectors and instruments developed over the decades will enhance the historical discussion. There is currently a drought of figures in the first  8 pages.

 

Figure 1 has room in  the first panel to float “J”, “S”, “U” and “N” labels to indicate the planet, in addition to the color coding.  The “faintly shown (purple)” comes out faintly grey in my copy, and the caption’s “from opaque to transparent (bottom to top)” is mysterious---I do not know what the author means by this, since there is no evidence of a change in transparency in my copy.

 

Figure 2 is quite nice.  The caption makes sense until “Neptune, averaged”, which breaks the “<Planet> from <Instrument>” pattern of the sentence and is unclear; please rewrite.

 

The Figure 3 caption needs work.  The plotted curves are not “Contours” in the usual sense of indicating the path of a constant property, so this word should be replaced with something like “Curves”.  “The arrows to the right of each plot”---there are no arrows shown?  The curves have varying color from black through red to white, but the caption does not explain the meaning of these colors.

 

Section 3.2.1, line 496+: The interpretation of mid-latitude (extratropical) cold zones and warm belts via upwelling and downwelling respectively is assumptive---see for example: https://dps53-aas.ipostersessions.com/Default.aspx?s=91-AD-E4-0F-83-F1-F1-4F-F9-11-B1-A4-06-7E-7D-B0

The point is that turning off upwelling and downwelling does not turn off the cold and warm anomalies in the extratropical troposphere; they are present regardless. This point also applies to the discussion in Section 3.3.3 for Uranus and Neptune, where it may help with the conundrum presented.

 

Latitudes should be indicated as planetographic (preferred for dynamics) or planetocentric, especially for Saturn and Jupiter.  For example, in the caption to Figure 6 on p. 16, the dashed lines are +/- 12 deg, but is this planetographic or planetocentric? The distinction matters.

 

The English is rough throughout---the article would benefit from professional copyediting. A few examples: line 32: “was the naturally investigated first”

line 61: “observations of the Venus”

line 119: “initial temperatures measurements”

line 120: “longer and longer wavelengths…millimeter, and sub-millimeter” <jumbled order>

line 145: “acutely interpreted” <does not make sense; need to rephrase>

line 151-152: “of the CH4 at could” <missing words>

line 170: “prinn1975phosphine,prinn1977carbon” <formatting typos>

line 195: “cm(-1)” <typo>

line 201, 295, 328, 347, 368, 414, 443, 444, 533, 562, 620, 709: 

“[104? ]” “[188? ]”  “[206? -210]”  “??” “189?” “Figure ??” “249?” “188?” “269? ?” “Figure ??” “Figure ??” “??. From” <extraneous “?”>

line 256: “CIRS observations of the Jupiter”

line 288: “ISO was followed the Spitzer

line 296: “(CH3C2H/C3H4)” <what is the purpose of “/C3H4” ?>

line 529: “Section []”

line 628: “~75circ

line 657: “to signifiicantly shorter” -> “to be significantly shorter” <2 typos>

line 692-693: “predicted temperatures and should rise” <missing word>

line 719+: <Lots of extraneous template instructions>

Author Response

The history is well written and engaging, with an impressive 287 references.  Unfortunately, this is a very rough draft with dozens of typos, some of which are indicated below.  The review should be publishable after copyediting and addressing the following minor concerns.

 

Thank you for your helpful comments and kind words.  My apologies for the roughness of the draft, but I was under pressure from the editors to submit before I was ready to do so (submitting after a late night writing frenzy from a hotel room in Venice, while on holiday). I have since taken the time revise and expand the paper. 

 

The review needs more figures, for example, choice examples of the different types of detectors and instruments developed over the decades will enhance the historical discussion. There is currently a drought of figures in the first  8 pages.

 

I have added many more figures throughout, including several at the start.  

 

Figure 1 has room in  the first panel to float “J”, “S”, “U” and “N” labels to indicate the planet, in addition to the color coding.  The “faintly shown (purple)” comes out faintly grey in my copy, and the caption’s “from opaque to transparent (bottom to top)” is mysterious---I do not know what the author means by this, since there is no evidence of a change in transparency in my copy.

 

This figure and caption have been revised.

 

Figure 2 is quite nice.  The caption makes sense until “Neptune, averaged”, which breaks the “<Planet> from <Instrument>” pattern of the sentence and is unclear; please rewrite.

 

This figure and caption have been revised.

 

The Figure 3 caption needs work.  The plotted curves are not “Contours” in the usual sense of indicating the path of a constant property, so this word should be replaced with something like “Curves”.  “The arrows to the right of each plot”---there are no arrows shown?  The curves have varying color from black through red to white, but the caption does not explain the meaning of these colors.

 

This figure and caption have been revised.

 

 

Section 3.2.1, line 496+: The interpretation of mid-latitude (extratropical) cold zones and warm belts via upwelling and downwelling respectively is assumptive---see for example: https://dps53-aas.ipostersessions.com/Default.aspx?s=91-AD-E4-0F-83-F1-F1-4F-F9-11-B1-A4-06-7E-7D-B0

The point is that turning off upwelling and downwelling does not turn off the cold and warm anomalies in the extratropical troposphere; they are present regardless. This point also applies to the discussion in Section 3.3.3 for Uranus and Neptune, where it may help with the conundrum presented.

 

I would like to express my gratitude for this comment. I have revisited this poster and it has opened my eyes. I had fallen into the trap.  The text has now been changed to be clear that interpretations of upwelling and downwelling were assumptive and not the only interpretations.  Thank you for the insight.

 

Latitudes should be indicated as planetographic (preferred for dynamics) or planetocentric, especially for Saturn and Jupiter.  For example, in the caption to Figure 6 on p. 16, the dashed lines are +/- 12 deg, but is this planetographic or planetocentric? The distinction matters.

 

I have revised the text to specify planetographic or centric where necessary.

 

The English is rough throughout---the article would benefit from professional copyediting. A few examples: line 32: “was the naturally investigated first”

 

My apologies for the poor, rushed writing.   I have corrected all the errors you have noted, plus a few more.   I have hopefully not introduced too many new errors in the new text.

 

line 61: “observations of the Venus”

line 119: “initial temperatures measurements”

line 120: “longer and longer wavelengths…millimeter, and sub-millimeter” <jumbled order>

line 145: “acutely interpreted” <does not make sense; need to rephrase>

line 151-152: “of the CH4 at could” <missing words>

line 170: “prinn1975phosphine,prinn1977carbon” <formatting typos>

line 195: “cm(-1)” <typo>

line 201, 295, 328, 347, 368, 414, 443, 444, 533, 562, 620, 709: 

“[104? ]” “[188? ]”  “[206? -210]”  “??” “189?” “Figure ??” “249?” “188?” “269? ?” “Figure ??” “Figure ??” “??. From” <extraneous “?”>

line 256: “CIRS observations of the Jupiter”

line 288: “ISO was followed the Spitzer

line 296: “(CH3C2H/C3H4)” <what is the purpose of “/C3H4” ?>

line 529: “Section []”

line 628: “~75circ

line 657: “to signifiicantly shorter” -> “to be significantly shorter” <2 typos>

line 692-693: “predicted temperatures and should rise” <missing word>

line 719+: <Lots of extraneous template instructions>

 

The above errors, including LaTeX formatting issues, have now been corrected. Thanks again for your help.

 

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