Table 3. Descriptions of lightning, military, and prescribed fire regimes at the Avon Park Air Force Range, south-central Florida, USA (1997–2009).
| Season | Wet | Dry | Fire |
|---|---|---|---|
| Lightning Fires | |||
| Number of fires | 13 | 3 | 43 |
| Area burned (ha) | 152 | 521 | 6,093 |
| Air temperature (°C) | 26.2 ± 0.8 | 23.4 ± 0.1 | 26.5 ± 3.0 |
| Relative humidity (%) | 85 ± 4 | 79 ± 1 | 74 ± 5 |
| Solar radiation (mW m-2) | 0.21 ± 0.04 | 0.20 ± 0.01 | 0.28 ± 0.02 |
| Soil moisture @ 30–60 cm depth (mm) | 32 ± 17 | 7 ± 4 | 14 ± 9 |
| Seasonal timing (day of year) | 210 ± 29 (Jul 29) | 109 ± 42 (Apr 19) | 163 ± 23 (Jun 12) |
| Military fires | |||
| Number of fires | 17 | 44 | 51 |
| Area burned (ha) | 1,154 | 5,853 | 11,115 |
| Air temperature (°C) | 25.6 ± 1.7 | 17.5 ± 4.3 | 23.3 ± 3.6 |
| Relative humidity (%) | 79 ± 5 | 75 ± 10 | 68 ± 6 |
| Solar radiation (mW m-2) | 0.22 ± 0.02 | 0.17 ± 0.05 | 0.28 ± 0.03 |
| Soil moisture @ 30–60 cm depth (mm) | 32 ± 27 | 17 ± 11 | 10 ± 6 |
| Seasonal timing (day of year) | 191 ± 52 (Jul 10) | 36 ± 42 (Feb 5) | 121 ± 31 (May 1) |
| Prescribed fires | |||
| Number of fires | 118 | 341 | 205 |
| Area burned (ha) | 15,269 | 69,681 | 41,129 |
| Air temperature (°C) | 23.9 ± 3.0 | 17.0 ± 4.4 | 23.4 ± 4.0 |
| Relative humidity (%) | 81 ± 5 | 75 ± 8 | 71 ± 6 |
| Solar radiation (mW m-2) | 0.21 ± 0.04 | 0.17 ± 0.04 | 0.28 ± 0.03 |
| Soil moisture @ 30–60 cm depth (mm) | 50 ± 35 | 23 ± 20 | 18 ± 9 |
| Seasonal timing (day of year) | 157 ± 81 (Jun 6) | 40 ± 38 (Feb 9) | |
For fires, data are sums over the period of record. For weather conditions, data are means ± 1 standard deviation. Data are grouped by the three seasons as produced by the representative 3-season model. Values for dry season are adjusted to include days spanning across different years.