Data format

Files follow a format much used to organize multi-dimensional scientific data, the NetCDF (Network Common Data Form). In particular, this data follow the CF convention. For more information on this format see this link.

Map projection
Model grid is represented in a Lambert conformal projection. The center of the model grid is located at -35° latitude and -65° longitude, and the spatial resolution is approximately 4 km.

Dimensions
Data dimensions are shown in the following table:

Dimension	Value
time	1
y	1249
x	999

Variables
The list of variables available in the files are shown in the following table:

Variable	Description	Unit	Precision	Frequency
PP	10-min accumulated precipitation	mm	float32	10M
PP	Hourly accumulated precipitation	mm	float32	01H
HR2	2-meter relative humidity	%	float32	01H
T2	2-meter temperature (*)	°C	float32	01H
dirViento10	10-meter wind direction	°	float32	01H
magViento10	10-meter wind speed (*)	m/s	float32	01H
PSFC	Surface pressure	hPa	float32	01H
ACLWDNB	Incoming longwave radiation (**)	J/m2	float32	01H
ACLWUPB	Outgoing longwave radiation (**)	J/m2	float32	01H
ACSWDNB	Incoming shortwave radiation (**)	J/m2	float32	01H
TSLB	Soil temperature in 0-10cm layer	°C	float32	01H
SMOIS	Soil moisture in 0-10cm layer	m3/m3	float32	01H
Freezing_level	Height above mean sea level of 0°C temperature	m	float32	01H
Tmax	Daily maximum temperature (*)	°C	float32	24H
Tmin	Daily minimum temperature (*)	°C	float32	24H

(*) Variables debiased using surface observations. For more information about the methodology see Cutraro et al., 2020. In case of failure in the debiasing procedure, raw data will be presented instead.
(**) Accumulated value from the beginning of the forecast.

For the minimum temperature (Tmin) of a given day, the value corresponds to a temperature registered between 00 and 12 UTC. For the maximum temperature (Tmax) of a given day, the value corresponds to a temperature registered between 12 and 00 UTC of the following day.

For example, the file WRFDETAR_24H_20220314_00_001.nc includes data from the 00 UTC forecasting cycle for the first forecast period (001 here represents the first day) and contains the forecast minimum temperature for the day 20220315 between 00 and 12 UTC,and the forecast maximum temperature between 12 and 00 UTC of the same day.

Precipitation PP for a given day at time P corresponds to the amount accumulated between times P-1 and P.

For example, WRFDETAR_01H_20220314_00_036.nc file contains data from the 00 UTC forecasting run for the 36th forecast lead time with accumulated precipitation valid for March 15, 2022 between 11 and 12 UTC. In the case of WRFDETAR_10M_20220314_00_036.nc file contains the 10-min accumulated precipitation valid from 11 to 12 UTC.

Coordinate variables
The coordinate variables available in the files are shown in the following table:

Variable	Description	Unit	Precision
time	Time	Hours since the beginnig of the forecast cycle	float64
y	y coordinate	Meters from the center of the grid	float32
x	x coordinate	Meters from the center of the grid	float32
lat	Latitude	° (between 90° y -90°)	float32
lon	Longitude	° (between -180° y 180°)	float32