Basic Info
To get some basic info about all available parameters, use the following request. What you get is the parameter name, leveltype and level for all parameters
GET /api/category/{category}/version/{version}/parameter.json
| Category | For now, there are one category for the API, mesan2g.
|
| Version | When the API for a given category is changed, the version is increased. Old
versions will be
available for a limited time.
|
Parameter table
Basic information about the parameters. For now there are two level types, hmsl and hl. hmsl means mean sea level and hl means level above ground.
In the service, for some precipitation parameters you get the unit kg/m2/h. This is the same as
mm/h.
For some of the parameters you can find more information.
| Parameter | Unit | Level Type | Level (m) | Description | Value range |
|---|---|---|---|---|---|
| t | C | hl | 2 | Air temperature | Decimal number, one decimal |
| tmin | C | hl | 2 | Minimum air temperature | Decimal number, one decimal |
| tmax | C | hl | 2 | Maximum air temperature | Decimal number, one decimal |
| Tiw | C | hl | 2 | Wet bulb temperature | Decimal number, one decimal |
| gust | m/s | hl | 10 | Wind gust speed | Decimal number, one decimal |
| wd | degree | hl | 10 | Wind direction | Integer |
| ws | m/s | hl | 10 | Wind speed | Decimal number, one decimal |
| r | % | hl | 2 | Relative humidity | Integer, 0-100 |
| prec1h | mm | hl | 0 | Precipitation last hour | Decimal number, one decimal |
| prec3h | mm | hl | 0 | Precipitation last three hours | Decimal number, one decimal |
| prec12h | mm | hl | 0 | Precipitation last 12 hours | Decimal number, one decimal |
| prec24h | mm | hl | 0 | Precipitation last 24 hours | Decimal number, one decimal |
| frsn1h | cm | hl | 0 | Snow precipitation last hour | Decimal number, one decimal |
| frsn3h | cm | hl | 0 | Snow precipitation last three hours | Decimal number, one decimal |
| frsn12h | cm | hl | 0 | Snow precipitation last 12 hours | Decimal number, one decimal |
| frsn24h | cm | hl | 0 | Snow precipitation last 24 hours | Decimal number, one decimal |
| vis | km | hl | 2 | Horizontal visibility | Decimal number, one decimal |
| msl | hPa | hmsl | 0 | Pressure reduced to medium sea level | Integer |
| tcc | octas | hl | 0 | Total cloud cover | Integer, 0-8 |
| lcc | octas | hl | 0 | Low level cloud cover | Integer, 0-8 |
| mcc | octas | hl | 0 | Medium level cloud cover | Integer, 0-8 |
| hcc | octas | hl | 0 | High level cloud cover | Integer, 0-8 |
| c_sigfr | % | hl | 0 | Fraction of significant clouds | Integer, 0-100 |
| cb_sig | m | hmsl | 0 | Cloud base of significant clouds | Integer |
| cb_sig | m | hmsl | 0 | Cloud base of significant clouds | Integer |
| ct_sig | m | hl | 0 | Cloud top of significant clouds | Integer |
| prtype | code | hl | 0 | Type of precipitation | Integer, 0-6 |
| pmax | mm/h | hl | 0 | Maximum precipitation | Decimal number, one decimal |
| pmin | mm/h | hl | 0 | Minimum precipitation | Decimal number, one decimal |
| pmedian | mm/h | hl | 0 | Median precipitation | Decimal number, one decimal |
| pmean | mm/h | hl | 0 | Mean precipitation | Decimal number, one decimal |
| prsort | code | hl | 0 | Sort of precipitation | Integer, -9 or 1 |
| spp | % | hl | 0 | Frozen part of total precipitation. | Integer, -9 or 0-100 |
| wsymb2 | code | hl | 0 | Weather Symbol | Integer, 1-27 |
More information for some parameters
Precipitation last 3, last 12 and last 24 hour(s) (prec3h, prec12h, prec24h)
Theese parameters are only available every third, 12:th and 24:th hour.
Snow precipitation last 3, last 12 and last 24 hour(s) (frsn3h, frsn12h, frsn24h)
Theese parameters are only available every third, 12:th and 24:th hour.
Precipitation type (prtype)
The precipitation type parameter value is an integer with a value range of 0 to 6. The meaning of the values are the following:
| Value | Meaning |
|---|---|
| -9 | No precipitation |
| 1 | Stratiform precipitation |
Precipitation sort (prsort)
The precipitation sort parameter value is an integer with a value range of 0 to 6. The meaning of the values are the following:
| Value | Meaning |
|---|---|
| 0 | No precipitation |
| 1 | Snow |
| 2 | Snow and rain |
| 3 | Rain |
| 4 | Drizzle |
| 5 | Freezing rain |
| 6 | Freezing drizzle |
Percent of precipitation in frozen form (spp)
If there is no precipitation, the value of the spp parameter will be -9. Make sure you do handle this in your application!
Clod cover parameters
The cloud cover is splitted into four different parameters. They differ by the level above the ground.
| Parameter | Level |
|---|---|
| tcc | The total cloud cover. How big part of the sky is covered by clouds. |
| lcc | Low cloud cover. Clouds between 0 and 2500 meters. |
| mcc | Medium cloud cover. Clouds between 2500 and 6000 meters. |
| hcc | High cloud cover. Clouds above 6000 meters. |
Weather Symbol
wsymb2 consists of integers, 1 to 27. Every value represents a different kind of weather situation.
| Value | Meaning |
|---|---|
| 1 | Clear sky |
| 2 | Nearly clear sky |
| 3 | Variable cloudiness |
| 4 | Halfclear sky |
| 5 | Cloudy sky |
| 6 | Overcast |
| 7 | Fog |
| 8 | Light rain showers |
| 9 | Moderate rain showers |
| 10 | Heavy rain showers |
| 11 | Thunderstorm |
| 12 | Light sleet showers |
| 13 | Moderate sleet showers |
| 14 | Heavy sleet showers |
| 15 | Light snow showers |
| 16 | Moderate snow showers |
| 17 | Heavy snow showers |
| 18 | Light rain |
| 19 | Moderate rain |
| 20 | Heavy rain |
| 21 | Thunder |
| 22 | Light sleet |
| 23 | Moderate sleet |
| 24 | Heavy sleet |
| 25 | Light snowfall |
| 26 | Moderate snowfall |
| 27 | Heavy snowfall |