Catalog > NOAA GFS > NOAA GFS analysis, hourly

NOAA GFS analysis, hourly

available
Spatial domain Global
Spatial resolution 0.25 degrees (~20km)
Time domain 2015-01-15 00:00:00 UTC to 2024-07-01 00:00:00 UTC
Time resolution 1 hour

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This dataset is an "analysis" containing the model's best estimate of each value at each timestep. In other words, it does not contain a forecast dimension. GFS starts a new model run every 6 hours and dynamical.org has created this analysis by concatenating the first 6 hours of each forecast. Before 2021-02-27 GFS had a 3 hourly step at early forecast hours. In this reanalysis we have used linear interpolation in the time dimension to fill in the two timesteps between the three-hourly values prior to 2021-02-27.

This dataset is designed to be used in conjunction with the NOAA GFS forecast dataset.

Dimensions

min max units
latitude -90 90 decimal degrees
longitude -180 179.75 decimal degrees
time 2015-01-15 00:00:00 UTC 2024-06-30 23:00:00 UTC seconds since 1970-01-01 00:00:00

Variables

units dimensions
precipitation_surface kg/(m^2 s) time × latitude × longitude
temperature_2m C time × latitude × longitude
wind_u_10m m/s time × latitude × longitude
wind_v_10m m/s time × latitude × longitude

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Examples

Open notebook in github
Open notebook in colab
dynamical.org - NOAA GFS analysis, hourly
Mean temperature for a single day
import xarray as xr

ds = xr.open_zarr("https://data.dynamical.org/noaa/gfs/analysis-hourly/[email protected]")
ds["temperature_2m"].sel(time="2024-06-01T00:00").mean().compute()

Details

Storage

Storage for this dataset is generously provided by Source Cooperative, a Radiant Earth initiative.

Compression

The data values in this dataset have been rounded in their binary representation to improve compression. We round to retain 9 bits of the floating point number's mantissa (a 10 digit significand) which creates a maximum of 0.2% difference between the original and rounded value. See Klöwer et al. 2021 for more information.

introducing a new pod; GFS forecasts incoming