Hello Gringo! Χαιρετίσματα στην πανέμορφη Πάφο!
You hit the nail on the head, and since you brought up the "second desert in Europe" hypothesis, let's look at the hard numbers. The comparison with southeastern Spain (Almería and Cabo de Gata) is inevitable, and mathematically, they are almost twins. Let's do a deep dive into the actual data: Almería and Cabo de Gata are famous for being Europe's reference points for desert climates. Cabo de Gata is historically cited as the driest spot in the Iberian Peninsula, with an average annual precipitation of roughly 150 mm to 170 mm. Almería Airport officially hovers right around 200 mm. With a mean annual temperature of roughly 19°C, their Köppen Hot Desert (BWh) threshold is 190 mm. This means Cabo de Gata is BWh, while Almería city dances right on the BSh/BWh line.
However, there is a massive catch with Spain: the official meteorological time series for Cabo de Gata is notoriously plagued with missing data and huge chronological gaps, making absolute long-term climatological normalizations a massive headache.
Now look at Xerokampos. Τhe in-situ Davis station (2020–2026) recorded 219.5 mm. But Xerokampos is significantly hotter, with a blistering mean annual temperature of 20.9°C. This pushes its BWh desert threshold up to 209.0 mm. That means Xerokampos is hovering a mere 10 mm above the strict absolute desert line! Basically Xerokampos is at the exact same proportional distance from the BWh climate as Almería, just with a much hotter baseline.
We just updated the research with deep ERA5 satellite data, and the findings are absolutely mind-blowing. Here is the exact breakdown of why this place is a structural anomaly:
1. We ran the historical reanalysis (1940–2026), and Xerokampos has seen a 9.5% precipitation drop in the last 30 years. But it gets crazier. For a continuous 15-year period (Feb 2004 to Dec 2018), the Mean Annual Precipitation locked in at exactly 208.02 mm. That means for 15 straight years, Xerokampos operated strictly as a BWh Hot Desert!
2. We finally proved why global models usually miss this micro-desert. Models like ERA5-Land use 9x9 km grid cells. Because the coastal strip is so narrow, the model accidentally averages the beach with the adjacent 753-meter high Ziros mountain, predicting a false 354.3 mm. But when we isolated the pure, undisturbed offshore marine cell right on the coastline (0m elevation), the model returned 212.0 mm! That is a less than 4% deviation from the station (219.5 mm). The coast literally behaves like the open sea.
3. The rain shadow here is brutal. As the air descends the Ziros mountain, it heats up rapidly (dry adiabatic lapse rate of ~9.8°C/km). We calculated that roughly 140.6 mm of rain per year evaporates in mid-air (virga) before it even hits the ground at Xerokampos.
4. To prove the orographic shield, we looked at extreme weather. During the catastrophic Storm Daniel in Sept 2023, the windward Toplou monastery recorded 64.6 mm. Xerokampos? A measly 3.6 mm. It received barely 5.5% of the regional rainfall because the mountain completely cut it off.
When you look at these numbers, the conclusion is unavoidable. Xerokampos isn't just dry; it is a topographically isolated, borderline desert microclimate. And it's not just the Ziziphus lotus telling us this. The ecosystem is uniquely adapted, hosting a suite of North African and Saharo-Arabian thermophilic flora, including the desert grass Lygeum spartum and the drought-resistant Periploca Angustifolia. The harsh sandy and saline soils of the local Alatsolimni (salt lake) complete this extreme xerothermic picture. Not to mention the sand dunes immediately west of Xerokampos or the fact that the Sitia UNESCO geopark officially characterizes the climate in Xerokampos as ''semi-desert''.
You are totally right, we might get a second hot desert in Europe provided the numbers hold up as the Davis station in Xerokampos expands its operation.
Here is the updated paper in English and Greek (I kinda helped methodologically but I chose not to be listed as an author):
Xerokampos desert EN.pdf
Xerokampos desert GR.pdf