DEKER™ Data Sets
The following page describes data that is available on public OpenWeather Deker™ server. For tutorial on how to use Deker™ to access this data please refer to the Deker™ Tutorial page.
Collections
OpenWeather public Deker™ server contains the following regularly updated collections of data:
| Collection | Description |
|---|---|
weather_forecast |
Weather forecasts archive |
weather_nowcast |
Recent nowcast (current) weather data archive |
weather_forecast collection
Weather_forecast collection contains weather forecast data archive. There are multiple
VArray objects each containing 385 hours forecast data with hourly step with start point
defined by forecast_dt primary attribute. Forecasts are added daily at
00:00, 06:00, 12:00 and 18:00 UTC. The first available forecast is dated
2023-09-14 00:00:00 UTC.
To retrieve an object you should use forecast_dt primary attribute with
datetime.datetime object as value (note that the timezone shall be set to UTC).
VArray primary attributes:
| Name | Type | Description |
|---|---|---|
forecast_dt |
datetime |
Contains date and time of the forecast |
Data dimensions:
| Name | Description |
|---|---|
dt |
Data timestamp with 1 hour step. There are 385 addressable timestamps along this dimension.
You could either use their decimal indexes [0..384] or address them by
corresponding start date-time value (e.g. 2023-09-14 00:00:00 UTC). |
y |
Latitude geospatial dimension. There are 721 addressable grid points along this dimension.
You could either use their decimal indexes [0..720] or address them by
corresponding latitude values [90.0..-90.0] with -0.25 degrees
step (note the reverse order). |
x |
Longitude geospatial dimension. There are 1440 addressable grid points along this dimension.
You could either use their decimal indexes [0..1339] or address them by
corresponding longitude values [-180.0..180.0] with 0.25 degrees
step. |
layers |
Data band dimension which is used to extract particular weather parameter. There are 18
addressable weather parameters You could either use their decimal indexes
[0..17] or string labels associated with each of them (see below). |
Layers:
| Index | Label | Units | Description |
|---|---|---|---|
0 |
main.humidity |
% | Relative humidity |
1 |
main.temp |
°K | Air temperature |
2 |
main.pressure |
hPa | Air pressure |
3 |
main.grnd_pressure |
hPa | Air pressure at ground level |
4 |
main.dew_point |
°K | Dew point temperature |
5 |
precipitation.accumulated |
mm | |
6 |
precipitation.rate |
mm/s | |
7 |
precipitation.convective |
mm | |
8 |
precipitation.ice |
mm | |
9 |
precipitation.fr_rain |
mm | |
10 |
precipitation.rain |
mm | |
11 |
precipitation.snow |
mm | |
12 |
precipitation.snow_depth |
m | |
13 |
precipitation.hours |
h | |
14 |
wind.speed |
m/s | Wind speed |
15 |
wind.deg |
° | Wind origin cardinal (compass) direction |
16 |
wind.gust |
m/s | Maximal wind gust speed |
17 |
clouds.all |
% | Cloud coverage |
weather_nowcast collection
Weather_nowcast collection contains nowcast (current) weather data since
2022-01-01 00:00:00 UTC. Please note that data is added to this collection with up to 10
days delay. Collection contains single VArray object which holds historical data in its
time dimension.
To retrieve the object you should use model_name primary attribute with
"weather_nowcast" value.
VArray primary attributes:
| Name | Type | Description |
|---|---|---|
model_name |
string |
Constant "weather_nowcast" |
Data dimensions:
| Name | Description |
|---|---|
dt |
Data timestamp with 1 hour step. You can address them by corresponding date-time value from
2022-01-01 00:00:00 UTC. |
y |
Latitude geospatial dimension. There are 721 addressable grid points along this dimension.
You could either use their decimal indexes [0..720] or address them by
corresponding latitude values [90.0..-90.0] with -0.25 degrees
step (note the reverse order). |
x |
Longitude geospatial dimension. There are 1440 addressable grid points along this dimension.
You could either use their decimal indexes [0..1339] or address them by
corresponding longitude values [-180.0..180.0] with 0.25 degrees
step. |
layers |
Data band dimension which is used to extract particular weather parameter. There are 22
addressable weather parameters You could either use their decimal indexes
[0..21] or string labels associated with each of them (see below). |
Layers:
| Index | Label | Units | Description |
|---|---|---|---|
0 |
clouds.all |
% | Cloud coverage |
1 |
main.dew_point |
°K | Dew point temperature |
2 |
main.grnd_pressure |
hPa | Air pressure at ground level |
3 |
main.humidity |
% | Relative humidity |
4 |
main.pressure |
hPa | Air pressure |
5 |
main.temp |
°K | Air temperature |
6 |
precipitation.accumulated |
mm | |
7 |
precipitation.convective |
mm | |
8 |
precipitation.fr_rain |
mm | |
9 |
precipitation.graupel |
mm | |
10 |
precipitation.hail |
mm | |
11 |
precipitation.ice |
mm | |
12 |
precipitation.ice_pellets |
mm | |
13 |
precipitation.mix_rain_snow |
mm | |
14 |
precipitation.rain |
mm | |
15 |
precipitation.rate |
mm/s | |
16 |
precipitation.snow |
mm | |
17 |
precipitation.snow_depth |
m | |
18 |
precipitation.thunderstorm |
mm | |
19 |
precipitation.wet_snow |
mm | |
20 |
wind.deg |
° | Wind origin cardinal (compass) direction |
21 |
wind.speed |
m/s | Wind speed |
