Dear Dr. Imtiaz,

Based on the reports by 2 referees and my own reading of your manuscript (MS), I have decided that major revisions are required before further considering this MS for publication in ANGEO.

Please submit a carefully revised version of your MS that will take into account all the comments raised by the referees along with a version of your revised MS that will highlight the changes made.

Thank you for your interest in ANGEO.

Sincerely,

George Balasis

Dear Dr. Imtiaz,

Based on the new reports received by the 2 referees and my own reading of your revised manuscript (MS), I have decided that major revisions are still required prior to further considering this MS for publication in ANGEO.

Please submit a carefully revised version of your MS that will take into account all the comments raised by the referees along with a version of your revised MS that will highlight the changes made and a Response to Referees' letter.

Thank you for your interest in ANGEO.

Sincerely,

George Balasis

Dear Dr. Imtiaz,

Based on the reports received by 2 referees and my own reading of your revised manuscript (MS), I have decided that intermediate revisions are still required prior to further considering this MS for publication in ANGEO.

Please submit a carefully revised version of your MS that will take into account all the comments raised by the referees along with a version of your revised MS that will highlight the changes made and a Response to Referees' letter.

Thank you for your interest in ANGEO.

Sincerely,

George Balasis

Dear Dr. Imtiaz,

Based on the reports received by 2 referees and my own reading of your revised manuscript (MS), I have decided that minor revisions are still required prior to further considering this MS for publication in ANGEO.

Please submit a carefully revised version of your MS that will take into account all the comments raised by the referees along with a version of your revised MS that will highlight the changes made and a Response to Referees' letter.

Thank you for your interest in ANGEO.

Sincerely,

George Balasis

Dear Dr. Imtiaz,

Following the review by one referee and my own reading of your revised manuscript (MS), I have decided to publish your MS following minor revisions.

Please submit a revised version of your MS that will highlight the changes made in the original MS, along with a regular revised MS and a Response to Reviewers letter.

Thank you for your interest in Annales Geophysicae.

Best regards,

George Balasis

Dear Dr. Imtiaz,

I am now pleased to accept your manuscript for publication in "Annales Geophysicae" subject to the following technical corrections:

1. Title

"Geomagnetic" ---> "geomagnetic" (not use a capital "G" here!).

2. Abstract

Please define abbreviations "GPS" and "vTEC".

"Global Ultraviolet Spectrographic Imager" --->
"Global UltraViolet Spectrographic Imager (GUVI)".

"Thermosphere Ionosphere Mesosphere Energetics and Dynamics" --->
"Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED)".

3. Introduction

Please define abbreviations "GPS", "TEC", "GNSS", "TIMED/GUVI".

Line 19: "is the season dependent" ---> "is season dependent".

Thank you.

Best regards,

George Balasis