Table 1.
Geography and environmental variables calculated for the period of 1 January 1901–31 December 1978 from monthly mean, minimum and maximum temperature and total precipitation (CRU TS v. 4.01 data (Harris et al. 2014) downscaled using CHELSA (Karger et al. 2017)), and available water capacity (AWC, Soilgrids data base, Hengl et al. (2017))
| Variable | Description | Mean | (Min., Max.) |
|---|---|---|---|
| Geography | |||
| Long | Longitude (degrees N) | 8.3 | (6.2, 10.5) |
| Lat | Latitude (degrees E) | 46.7 | (46.1, 47.3) |
| Elev | Elevation (m a.s.l) | 1062.2 | (481, 1602.5) |
| Slope | Slope (%) | 40 | (0, 70) |
| Standard bioclimatic indexes | |||
| bio.1 | Annual mean temperature | 6.1 | (3.1, 9.3) |
| bio.2 | Mean diurnal range (Mean of monthly Tmax–Tmin)) | 8.9 | (8.6, 9.2) |
| bio.3 | Isothermality (bio.2/bio.7) (*100) | 23.9 | (23.2, 24.6) |
| bio.4 | Temperature Seasonality (standard deviation *100) | 663.7 | (636.4, 676.9) |
| bio.5 | Max temperature of warmest month | 24.2 | (21, 27.4) |
| bio.6 | Min temperature of coldest month | −13 | (−15.8, −10) |
| bio.7 | Temperature annual range (bio.5-bio.6) | 37.2 | (36.2, 37.9) |
| bio.8 | Mean temperature of wettest quarter | 9.5 | (−2.6, 17.7) |
| bio.9 | Mean temperature of driest quarter | −1.7 | (−6.1, 3.9) |
| bio.10 | Mean temperature of warmest quarter | 16.8 | (13.8, 20) |
| bio.11 | Mean temperature of coldest quarter | −6 | (−8.5, −3.3) |
| bio.12 | Annual precipitation | 1176.4 | (505.6, 1690.9) |
| bio.13 | Precipitation of wettest month | 281 | (128.1, 432.6) |
| bio.14 | Precipitation of driest month | 4 | (0.4, 9.1) |
| bio.15 | Precipitation seasonality (coefficient of variation) | 50 | (46, 55.3) |
| bio.16 | Precipitation of wettest quarter | 641.2 | (274.2, 1024.7) |
| bio.17 | Precipitation of driest quarter | 55.6 | (24.5, 83.7) |
| bio.18 | Precipitation of warmest quarter | 277.3 | (156, 442.9) |
| bio.19 | Precipitation of coldest quarter | 222.7 | (65.6, 452.7) |
| Drought | |||
| AWC | Available water capacity | 163.9 | (147.7, 184.5) |
| PET.thorn | Mean annual PET (Thornthwaite) | 43.8 | (37.3, 51.8) |
| PET.harg | Mean annual PET (Hargreaves) | 52.6 | (47.3, 59.4) |
| SPEI.m1 | Number of month with SPEI < −1 | 162 | (144, 178) |
| SPEI.m2 | Number of month with SPEI < −2 | 13.8 | (7, 22) |
| SPEI.q5 | 5% quantile of SPEI | −1.6 | (−1.6, −1.5) |
| SPEI.q1 | 1% quantile of SPEI | −2.1 | (−2.2, −1.9) |
| scPDSI.m3 | Number of month with scPDSI < −3 | 42.6 | (29, 53) |
| scPDSI.m4 | Number of month with scPDSI < −4 | 9.6 | (2, 14) |
| scPDSI.q5 | 5% quantile of scPDSI | −3.2 | (−3.4, −2.8) |
| scPDSI.q1 | 1% quantile of scPDSI | −4.5 | (−4.9, −4.1) |
| Late frost | |||
| late.frost | Min temperature of the first month of the year with mean temperature > 5 °C | 1.7 | (1.4, 2) |
| late.frost2 | Min temperature of May | 4.7 | (1.5, 8.2) |
PET potential evapotranspitation, scPDSI Palmer’s Drought Severity Index, SPEI standardized precipitation-evapotranspiration index