Table 1.
Trends of climatic data, temporal interval for which the best fit was obtained and results of the statistical analysis
| Month | RAV ± s.e. | Pearson’s r |
| January | ||
| Minimum absolute temperatures (1941–1999) | 0·054 ± 0·024 | 0·2872* |
| Mean of minimum temperatures (1941–1999) | 0·031 ± 0·014 | 0·2873* |
| February | ||
| Maximum absolute temperatures (1968–1999) | 0·191 ± 0·047 | 0·5984* |
| Mean maximum temperatures (1968–1999) | 0·132 ± 0·037 | 0·5407* |
| Number of days with snowfall (1961–2001) | –0·238 ± 0·087 | –0·4271** |
| March | ||
| Maximum absolute temperatures (1963–1999) | 0·168 ± 0·056 | 0·4596** |
| Mean maximum temperatures (1968–1999) | 0·223 ± 0·067 | 0·5269** |
| Mean minimum temperatures (1968–1999) | 0·126 ± 0·044 | 0·4657** |
| Mean of mean temperatures (1968–1999) | 0·187 ± 0·041 | 0·6484** |
| Number of days with snowfall (1961–2001) | –0·246 ± 0·067 | –0·5129** |
| April | ||
| Maximum absolute temperatures (1971–1999) | 0·178 ± 0·078 | 0·4086* |
| Mean maximum temperatures (1941–1999) | –0·051 ± 0·021 | –0·3094* |
| Mean of mean temperatures (1941–1999) | –0·037 ± 0·0164 | –0·2895* |
| Number of days with snowfall (1973–2001) | –0·293 ± 0·131 | –0·4079* |
| May | ||
| Mean maximum temperatures (1967–1999) | 0·123 ± 0·049 | 0·4164* |
| Mean of mean temperatures (1967–1999) | 0·087 ± 0·039 | 0·3761* |
| Number of days with snowfall (1969–2001) | –0·220 ± 0·085 | –0·4221** |
| June | ||
| Maximum absolute temperatures (1941–1999) | –0·046 ± 0·022 | –0·2719* |
| Maximum absolute temperatures (1973–1999) | 0·160 ± 0·069 | 0·42859* |
| Mean maximum temperatures (1970–1999) | 0·110 ± 0·053 | 0·3669* |
| July | ||
| Maximum absolute temperatures (1969–1999) | 0·098 ± 0·035 | 0·4773** |
| Mean maximum temperatures (1976–1999) | 0·147 ± 0·041 | 0·5743** |
| Mean of mean temperatures (1976–1999) | 0·122 ± 0·051 | 0·4613* |
| August | ||
| Maximum absolute temperatures (1968–1999) | 0·100 ± 0·035 | 0·4704** |
| Mean maximum temperatures (1968–1999) | 0·122 ± 0·031 | 0·5957** |
| Mean minimum temperatures (1941–1999) | 0·029 ± 0·010 | 0·3506** |
| Mean minimum temperatures (1963–1999) | 0·052 ± 0·019 | 0·4184* |
| Mean of mean temperatures (1968–1999) | 0·090 ± 0·027 | 0·5246** |
| September | ||
| Maximum absolute temperatures (1972–1999) | 0·176 ± 0·065 | 0·4743* |
| Mean minimum temperatures (1977–1999) | –0·213 ± 0·065 | –0·5921** |
| Mean of mean temperatures (1977–1999) | 0·176 ± 0·069 | –0·4925* |
| November | ||
| Maximum absolute temperatures (1961–1999) | 0·095 ± 0·043 | 0·3438* |
| Minimum absolute temperatures (1962–1999) | 0·083 ± 0·036 | 0·3644* |
| Mean maximum temperatures (1961–1999) | 0·092 ± 0·029 | 0·4656** |
| Mean minimum temperatures (1941–1999) | 0·031 ± 0·014 | 0·2803* |
| Mean minimum temperatures (1958–1999) | 0·074 ± 0·021 | 0·4858** |
| Mean of mean temperatures (1961–1999) | 0·084 ± 0·026 | 0·4697** |
| December | ||
| Minimum absolute temperatures (1962–1999) | 0·161 ± 0·046 | 0·5070** |
| Mean maximum temperatures (1962–1999) | 0·088 ± 0·026 | 0·4935** |
| Mean minimum temperatures (1962–1999) | 0·072 ± 0·023 | 0·4670** |
| Mean of mean temperatures (1962–1999) | 0·079 ± 0·024 | 0·4893** |
| Number of days with snowfall (1962–2001) | –0·197 ± 0·082 | –0·3900** |
| Number of days with soil covered by snow (1962–2001) | –0·272 ± 0·115 | –0·3576** |
RAV, Estimated rate of annual variation of temperature (°C) per year.
Only significant results at P < 0·05 (*) and P < 0·01 (**) are shown.