Dear Authors,

please address the few suggestions from reviewer #2 below.

Best regards,

Thomas Wagner

Suggestions from reviewer #2:

There are a couple of mistakes in Figure 2 caption.
1) There is a missing comma in the 5th sentence after "(CO2)". Also, the comma is needed prior to the last "and in the sentence. Also, it is good to add "we use" after the "(CH4)" at the end of the sentence.
"We use the AIRS V6 climatologies for carbon monoxide (CO), carbon dioxide (CO2), nitric acid (HNO3), nitrous oxide (N2O) and sulfur dioxide (SO2) (AIRS Science Team/Joao Texeira, 2013), and for methane (CH4) we use the linear fit developed by (Xiong et al., 2013).

2) In the next sentence, please add "is based on" after the "over land", and replace "for" with "over" before "ocean", and after "ocean" you can add ", it uses".

CLIMCAPS a priori for surface emissivity over land is based on the CAMEL database (Hook 2019) and over an ocean, it uses the Masuda 210 model (Masuda et al. 1988) as modified by Wu and Smith (1997).