Near-real-time vegetation monitoring and historical database (1981-present) for the Iberian Peninsula and the Balearic Islands

This work and its associated dataset include spatio-temporal series of vegetation índices for Iberian Peninsula and Baleraric Islands during 1981 to date. The authors also provide a link to visualize and download the trend of the indices. All of these resources are highly relevant for researchers, managers, land-owners, policy-makers as well as other stakeholders working on forestry, agriculture and other environmental sciences.  Therefore, both the paper and the data are highly timely and potentially useful.

Overall, the manuscript is well-written and it is easy to follow. I recommend accepting it for publication.

Below, you can find some minor comments:

L107-108: why do the layer represent the highest value? Why not the mean or the median?

L112: please add the EPSG as you do at the end of the manuscript.

L144: what is the difference between the average here and the highest NDVI in L107-108.

L254: I have some concerns on the map used. In my opinion, authors should provide some details such as map spatial resolution. On the other hand, is the map temporally dynamic? I mean, do the land uses change over time? I wonder how changes in land uses (or the lack of the changes in the map) have been considered in your study.

L365. The color ramps of the maps do not correspond with the color ramps of the histogram. I mean, for instance in Fig 6a, correlation values equal to 1 are represented in blue in the map but these values are red in the histogram. Please, be consistent.

L377 and Figure 8. Well, there is a positive relationship between NDVI and kNDVI but it seems that a model including a squared effect would improve the quality of the fit. Therefore, I would not state that “the data reveal a linear relationship”.

The review comments are described in the attached PDF document.