Tableau 9
Types de circulation atmosphérique, d’après la classification de J.Lityński, dont la fréquence (nombre de jours) dans les saisons et années « anormales » selon la nébulosité, présente des écarts significatifs au niveau de 0,05 par rapport à la fréquence moyenne observée au cours des 50 ans 1951–2000 : a – écarts positifs, b – écarts négatifs. Circulation types after the classification of Lityński, which mean frequency (numbers of days) in anomalous seasons and years according to the cloudiness is significantly different at the level α= 0,05 from mean frequency in 50-years 1951– 2000: a – highest, b – lower.
| Anormalement serein Anomalously clear | Anormalement couvert Anomalously cloudy | ||
|---|---|---|---|
| a | NWA, SA, WA | 0C, EC, S0, NC | |
| Hiver Winter XII-II | b | SC, 0C, WC, SWC | SWA, SEA, SA, WA, SW0 |
| Printemps Spring | a | NWA, NA | NC, NEC, EC |
| III-V | b | 0C, SC, SEC | EA, NEA, SC |
| Eté Summer | a | NA, NEA, E0, SA | NWC, NC, SWC |
| VI-VIII | b | SC | NEA, NE0, EA, WA, NW0 |
| Automne Autumn | a | SA, EA, NEA, WA, S0 | NEC, EC, NW0 |
| IX-XI | b | NC, 00 | SW0, S0, SA |
| Année Year | a | SA, WA, E0, SEA | NEC, EC, 0C, NC, SC |
| XII-II | b | WC | EA, SA |
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