Summary of microclimate temperatures, number and duration of freeze–thaw cycles at two threshold temperatures on Marion Island
| . | Altitude (m) . | . | |
|---|---|---|---|
| . | 200 . | 800 . | |
| Microclimate temperature (°C) | |||
| Mean | 3.3±0.1 | 0.7±0.1 | |
| Maximum | 18.5 | 23.0 | |
| Minimum | -2.5 | -12.0 | |
| 0°C threshold | |||
| Number of events | 18 | 49 | |
| Mean duration (h) | 5.9±1.1 | 15.5±1.9 | |
| -5°C threshold | |||
| Number of events | 0 | 8 | |
| Mean duration (h) | 4.5±1.3 | ||
| . | Altitude (m) . | . | |
|---|---|---|---|
| . | 200 . | 800 . | |
| Microclimate temperature (°C) | |||
| Mean | 3.3±0.1 | 0.7±0.1 | |
| Maximum | 18.5 | 23.0 | |
| Minimum | -2.5 | -12.0 | |
| 0°C threshold | |||
| Number of events | 18 | 49 | |
| Mean duration (h) | 5.9±1.1 | 15.5±1.9 | |
| -5°C threshold | |||
| Number of events | 0 | 8 | |
| Mean duration (h) | 4.5±1.3 | ||
Mean values are ± s.e.m.
Measurements were taken at 1 cm depth in soil at two altitudes on the eastern side of Marion Island in July, August and September 2002.