The paper deals with mass inter- and intra- annual ballance of glaciers in High Asia fociusing at two sites one in Eastern Pamirs and the second in the central Tibetan Plateau. It uses Pleiades stereo data for derivation of DSMs which are compared by differencing. A number of corections are applied prior to the differencing. Findings for the two specific sites are presented. Several auxiliary methods are utlized such as classification of snow type from Sentinel-2 data for detection of the accumulation type of gaciers or Glacier Index. The potential of Pleiades data to monitor mountain glaciers is dicussed.

The manuscript has high scientifical quality and is recomended for publication with minor changes.

Minor comments:

35: Consider using the name “Nyenchen Tanglha Mountains” instead of “Nyainqêntanglha” as it is widely used in the literature. The Chinese version has more than variants for instance “Nyainqentanglha” in Bolch et al. 2010. The English version is unambiguous and appropriate.

140: Use larger font for the coordinates around on the map frame and remove left and bottom coordinates as they are duplicates.

190: What is the meaning of the “oversampled GSD”? Does this mean that the real spatial resolution is different? For how much?

220: “it can be reduced to a few decimeters after DEM coregistration” This needs a citation.

205: The sentence starting with “Such is the case of…” is somehow abrupt.

210: Table 1: add column Δt for each site to show what are the tine differences. Otherwise the reader is forced to do an awkward calculation.

220: You should expand “AMSAG” if it is an abbreviation.

240: three sentences starting with “According to ERA…“ are not well understandable. Please reword.

250: What was the source of the SLA?

280, 285: This para id cryptic. Please reword it.

295: “appreciated” to “seen”

295: In Figure 2 the (c) and (d) and (e) and (f) are not localized. Are these subsets at terminus or in the summit part of the glacier? Pleas make this clear.

295: Figure 2 caption: “in the in the Muztag..”

305: the sentence “According to the authors” should be merged with the previous sentence.

385: You can remove the sentence “Alternatively Belart et al….” as it is not needed.

425: Why not using the classification of glaciers on the Tibetan Plateau based on the accumulation regime by Maussion et al. 2014?

Maussion, F., Scherer, D., Mölg, T., Collier, E., Curio, J., & Finkelnburg, R. (2014). Precipitation seasonality and variability over the Tibetan Plateau as resolved by the High Asia Reanalysis. Journal of Climate, 27(5), 1910-1927.

650: “in-balance”, would it be better to use “balanced” instead?