Fire risk values, analysed — Download service
Description
In the decision support system Fire Risk Forest and Land, fire risk forecasts are calculated and meteorological data are reported to support decisions on fire in vegetation. Once the forecast has ended, a new calculation of the fire risk values is made based on the latest available weather data. This “analysis data” is stored. After each year’s fire season, the analysed historical dataset of the model-calculated boxes of 2.8 km * 2.8 km is saved with the midpoint given in x and y coordinates. Please note that the WMS service only contains the previous year’s data.
Each 2.8 km * 2.8 km square has the attributes listed below (some variation may occur from year to year):
ID: Internal MSB Task
Puncture: Internal MSB task for unique grid box. The data was added in 2015, before there was no value.
Time: It was used until 2014 to indicate the date of statistical values. As of 2015, dates will be stored in the “Date” field.
Temp: Temperature in degrees Celsius 2 m above ground at 12 UTC according to the calculation model for the current grid.
RH: Relative humidity expressed in % 2 m above the ground at 12 UTC according to the calculation model for the current grid grid.
Wind speed: Wind speed in m/s (medium wind) 10 m above the ground at 12 UTC according to the calculation model for the current grid pane.
Downstairs: Precipitation current day 18 UTC-18 UTC the previous day according to the calculation model for the current grid grid.
FFMC: Fine Fuel Moisture Code represents the humidity of leaves and grass. The maximum water storage in this layer is less than 1 mm. Included in the FWI model.
DMC: The Duff Moisture Code represents the humidity in a slightly deeper layer than the most superficial in the FWI model, e.g. moss and the upper part of the humus layer. The storage in this layer corresponds to about 15 mm of water.
DC: The Drought Code shows the moisture content of thick compact humus layers (about 100 mm water). DC is part of the FWI model.
ISI: The initial spread index. A measure of the rate of spread of the fire. An index used to calculate an FWI. Calculated from FFMC and reinforced by wind speed.
BUI: Buildup index. Can be seen as a general measure of humidity for the slightly deeper soil layers. An index value used to calculate a fire risk value, FWI. Weighted average of DMC and DC.
FWI: Fire Weather Index. Fire risk value calculated from ISI and BUI, which in turn are based on three basic values for moisture content in different layers (FFMC, DMC and DC). The input to the calculation is the daily rainfall as well as temperature, relative humidity and wind speed in the middle of the day.
FWI index: Index of spread risk and fire behaviour in forest land. Based on the basic value FWI (see above). Currently divided into six different index levels (1, 2, 3, 4, 5, 5E) where index 1 is the lowest risk and index 5E is the highest risk.
Fuel dehydration: Index values for the dehydration of the fuel and the lower layers of soil that are most important for a forest fire. Currently divided into six different index levels (1, 2, 3, 4, 5, 5E) where index 1 is the lowest risk and index 5E is the highest risk.
Medium: Daily average temperature 2 m above ground according to SMHI calculation model for the current grid grid.
RN: Dispersion rate in m/min for fire in uncut, unclaimed last year weeds.
GFI: Fire risk levels for grass fires, the following indications are used:
Very large grass fire risk (6)
High Grass Fire risk (5)
Moderate grass fire risk (4)
Small grass fire risk (3)
End of Grass Fire Season (2)
Snow — Snow-covered land (1)
Data missing/Not season (-1)
Wind direction: Wind direction in degrees from where the wind comes from (division 360 degrees, 180 degrees equivalent to southern wind) at 12 UTC according to the calculation model for the current grid pane.
E: The east-west position (centre) of the grid pane specified in SWEREF 99 TM. NOTE: prior to 2015, this information was entered in box ‘y’.
N: The north-south position of the grid (centre point) specified in SWEREF99 TM. NOTE: prior to 2015, this information was entered in box “x”.
Municipality: The commune code of the municipality within which the coordinate in the fields “E” and “N” is located.
Resources
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Description |
Link |
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0 |
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https://inspire.msb.se/nedladdning/brandrisk.xml |