In this paper the authors analyse the microclimatic variations around rural villages, using parallel measurements in two towns: one in Germany (Geisenheim) and another in Sweden (Haparanda).
The authors installed different temperature sensors in the historical locations of the original meteorological stations. With this, they can not only analyse the temperature variations in different parts of the villages and the impact of the urban heat island effect (UHI) in small towns, but also, they can analyse the impact that relocations have had on both series. Therefore, the first highlight of this article it’s novelty. With this study, the authors open a new line of research into measuring the impact of UHI in small, non-urban towns.
Another highlight is how well written and clear the paper is. This makes it very easy to follow and understand the article, and it’s really nice to find papers that are well written, especially for people who are not experts on this topic of the microclimatic variations around rural villages. Also, the graphics and the statistics are easy and very understandable. The only negative part about the writing style of the article is that sometimes the reader may feel that there is some missing information. However, this probably due to the paper length limitations of the journal.
On the other side, there are some things that are unclear in the descriptions of the field trial that can affect the results. The most important of these is that when examining the pictures of the installed sensors, in some cases, it seems that the sensors are not ideal placed. We know that the sensors were installed in the same position as historical meteorological stations in the past, but sometimes, moving a thermometer just couple of centimetres can have an impact on exposure. This can introduce noise in the temperature time series which should also be taken into consideration when studying long term temperature variations around the villages.
Moreover, the authors used less than one year of parallel measurements in their study, although the World Meteorological Organization suggests that two years are required for a reliable comparison. This field trial will probably extend into the future, addressing this issue.
In conclusion, this is a really nice paper that is dealing with a new line of research and opens up a relatively new topic of the effect of the UHI in small villages. This means that this article is the starting point for further study of parallel data relocations in other rural areas, to study whether the results found for these two villages are also found in other villages that experience different types of weather.
Lindén, J., Grimmond, C.S.B., and Esper, J.: “Urban warming in villages.” Adv. Sci. Res., 2015: 12, 157-162, doi:10.5194/asr-12-157-2015.
Author contributions: AG selected the paper and drafted the review, based on discussion between all members of the journal club. All members provided revisions of the review before submission.
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