Catalog > Google WeatherNext 3 forecast, 15 day, 0.1 degree, virtual > Validation report

Google WeatherNext 3 forecast, 15 day, 0.1 degree, virtual validation report

This dataset validation report plots a sample of values from the Google WeatherNext 3 forecast, 15 day, 0.1 degree, virtual dataset over time and across space, comparing where possible to a previously validated reference dataset. It also reports the quantity of unavailable values and their associated timestamps. These analyses are one layer of a multi-layered dataset validation process we perform at dynamical.org and also provide users a preview of the dataset contents.

Report generation start time: 2026-10-31T22:32:07 UTC

Summary

This dataset has been reviewed and is ready for use.

What looks good

All 19 variables were available at all 8 scanned initializations. The sampled decode check covered 8 of 8 initialization regions and five leads, reporting 760 successfully decoded references.
The plotted fields show consistent geographic orientation and plausible units and ranges.
Sea-surface-temperature masking follows the continents. The land location has no sea-surface-temperature values, as expected.
Precipitation and solar radiation show plausible hourly behavior. Rainfall is nonnegative and episodic, while radiation follows the daylight cycle without a cumulative ramp.

Review notes

Longitudes use the 0–360 convention, and the horizontal dimensions are named y and x. y holds latitude ascending from south to north and x holds longitude. For example, 100°W is x=260 in this dataset.

Datasets

Role	Name	ID	Version	URL
Validation	Google WeatherNext 3 forecast, 15 day, 0.1 degree, virtual	`google-weathernext3-forecast-15-day-0-1-degree-virtual`	`v0.1.0`	`https://google-weathernext3.r2.dynamical.org/google-weathernext3-forecast-15-day-0-1-degree-virtual/v0.1.0.icechunk`
Reference	NOAA GFS analysis	`noaa-gfs-analysis`	`0.1.0`	`s3://dynamical-noaa-gfs/noaa-gfs-analysis/v0.1.0.icechunk`

Run parameters

Parameter	Value
Validation dataset type	forecast
Validation time range	init_time 2026-06-30T00:00 → 2026-07-01T18:00
Reference time range	time 2021-05-01T00:00 → 2026-10-31T23:00
Point 1	lat=39.7000, lon=255.0000
Point 2	lat=25.0000, lon=300.0000
Spatial comparison time	init=2026-07-01T00:00, lead=24h (reference at 2026-07-02T00:00)
Timeseries period	init=2026-07-01T00:00
Statistic	mean when declared, otherwise standard_deviation
Store type	virtual — availability manifest-probed; value series sampled

Availability

The plot below shows the availability of each variable over time — light red marks unavailable data, dark green marks present data.

availability heatmap

Every variable is complete at every scanned position.

Decode health

760 references decoded successfully, sampled across 8 of 8 append-dim regions, 5 leads and up to 6 present levels per group variable.

Per-variable details

`cloud_cover_high` [statistic=mean]

Metadata

Field	Value
units	`percent`
long_name	High cloud cover
short_name	hcc
standard_name	cloud_area_fraction_in_atmosphere_layer
step_type	instant
sampled statistic	statistic=mean

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	0.04658	14.96	51.37
P2	0.05554	5.216	33.07

Spatial — init=2026-07-01T00:00, lead=24h (reference not available)

Source	min	mean	max
Validation	0.00407	38.09	99.97

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	0.049	29.24	74.91
P2 Validation	0.2409	28.8	59.38

Availability — 8 of 8 positions complete

`cloud_cover_low` [statistic=mean]

Metadata

Field	Value
units	`percent`
long_name	Low cloud cover
short_name	lcc
standard_name	cloud_area_fraction_in_atmosphere_layer
step_type	instant
sampled statistic	statistic=mean

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	0.03272	0.06281	0.1009
P2	0.9819	6.714	14.86

Spatial — init=2026-07-01T00:00, lead=24h (reference not available)

Source	min	mean	max
Validation	0.003559	45.3	99.99

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	0.0233	1.112	8.642
P2 Validation	2.047	11.8	21.69

Availability — 8 of 8 positions complete

`cloud_cover_medium` [statistic=mean]

Metadata

Field	Value
units	`percent`
long_name	Medium cloud cover
short_name	mcc
standard_name	cloud_area_fraction_in_atmosphere_layer
step_type	instant
sampled statistic	statistic=mean

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	0.04576	10.75	33.55
P2	0.6527	9.606	17.95

Spatial — init=2026-07-01T00:00, lead=24h (reference not available)

Source	min	mean	max
Validation	0.002098	29.47	100

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	0.06558	11.55	32.28
P2 Validation	0.08073	5.303	17.82

Availability — 8 of 8 positions complete

`dew_point_temperature_2m` [statistic=mean]

Metadata

Field	Value
units	`degree_Celsius`
long_name	2 metre dewpoint temperature
short_name	2d
standard_name	dew_point_temperature
step_type	instant
sampled statistic	statistic=mean

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	-8.153	1.527	8.935
P2	20.76	21.79	22.84

Spatial — init=2026-07-01T00:00, lead=24h (reference not available)

Source	min	mean	max
Validation	-71.34	3.934	29.5

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	-4.18	6.713	12.07
P2 Validation	20.63	22.29	23.07

Availability — 8 of 8 positions complete

`downward_direct_short_wave_radiation_flux_surface` [statistic=mean]

Metadata

Field	Value
units	`W m-2`
long_name	Surface direct short-wave radiation flux
short_name	aswdir_s
standard_name	surface_direct_downwelling_shortwave_flux_in_air
step_type	avg
sampled statistic	statistic=mean
comment	Average flux since the previous forecast step.

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	0.08039	250.7	762.2
P2	0.05527	267.9	603.4

Spatial — init=2026-07-01T00:00, lead=24h (reference not available)

Source	min	mean	max
Validation	0	93.58	855.8

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	0.02302	234.7	814.1
P2 Validation	0.01882	235	821.1

Availability — 8 of 8 positions complete

`downward_short_wave_radiation_flux_surface` [statistic=mean]

Metadata

Field	Value
units	`W m-2`
long_name	Surface downward short-wave radiation flux
short_name	sdswrf
standard_name	surface_downwelling_shortwave_flux_in_air
step_type	avg
sampled statistic	statistic=mean
comment	Average flux since the previous forecast step.

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	0.04812	325.1	939.7
P2	0.04283	331.5	732.6

Spatial — init=2026-07-01T00:00, lead=24h (reference at 2026-07-02T00:00)

Source	min	mean	max
Validation	0	155.9	977.6
Reference	0	163.3	972

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	0.04956	312.9	967.1
P1 Reference	0	338	1032
P2 Validation	0.02245	303.3	951.3
P2 Reference	0	329.4	884

Availability — 8 of 8 positions complete

`precipitation_experimental_surface` [statistic=mean]

Metadata

Field	Value
units	`kg m-2 s-1`
long_name	Precipitation rate
short_name	prate
standard_name	precipitation_flux
step_type	avg
sampled statistic	statistic=mean
comment	Average precipitation rate since the previous forecast step. Units equivalent to mm/s. WeatherNext 3 forecast of 1-hour precipitation from its experimental satellite-radar precipitation head; a model forecast, not an observation.

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	5.621e-09	2.649e-07	1.462e-06
P2	8.588e-08	1.843e-05	9.85e-05

Spatial — init=2026-07-01T00:00, lead=24h (reference not available)

Source	min	mean	max
Validation	0	2.92e-05	0.004447

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	6.401e-09	1.796e-05	0.0002884
P2 Validation	7.965e-09	1.138e-05	0.0001656

Availability — 8 of 8 positions complete

`precipitation_imerg_surface` [statistic=mean]

Metadata

Field	Value
units	`kg m-2 s-1`
long_name	Precipitation rate
short_name	prate
standard_name	precipitation_flux
step_type	avg
sampled statistic	statistic=mean
comment	Average precipitation rate since the previous forecast step. Units equivalent to mm/s. WeatherNext 3 forecast of 1-hour precipitation calibrated to IMERG satellite precipitation; a model forecast, not an observation.

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	1.883e-08	1.221e-06	7.961e-06
P2	1.821e-08	3.671e-06	2.051e-05

Spatial — init=2026-07-01T00:00, lead=24h (reference not available)

Source	min	mean	max
Validation	4.266e-10	2.876e-05	0.004213

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	7.198e-09	1.043e-05	0.000121
P2 Validation	8.092e-09	4.523e-06	6.441e-05

Availability — 8 of 8 positions complete

`precipitation_surface` [statistic=mean]

Metadata

Field	Value
units	`kg m-2 s-1`
long_name	Precipitation rate
short_name	prate
standard_name	precipitation_flux
step_type	avg
sampled statistic	statistic=mean
comment	Average precipitation rate since the previous forecast step. Units equivalent to mm/s. WeatherNext 3 model-native 1-hour precipitation.

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	2.09e-08	2.242e-06	1.316e-05
P2	4.744e-08	9.907e-06	5.915e-05

Spatial — init=2026-07-01T00:00, lead=24h (reference at 2026-07-02T00:00)

Source	min	mean	max
Validation	3.583e-10	3.182e-05	0.002363
Reference	0	3.162e-05	0.01685

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	2.336e-08	6.22e-06	7.895e-05
P1 Reference	0	6.762e-07	6.962e-05
P2 Validation	2.76e-08	5.668e-06	3.503e-05
P2 Reference	0	1.477e-05	0.0005913

Availability — 8 of 8 positions complete

`pressure_reduced_to_mean_sea_level` [statistic=mean]

Metadata

Field	Value
units	`Pa`
long_name	Pressure reduced to MSL
short_name	prmsl
standard_name	air_pressure_at_mean_sea_level
step_type	instant
sampled statistic	statistic=mean

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	1.002e+05	1.007e+05	1.012e+05
P2	1.018e+05	1.019e+05	1.021e+05

Spatial — init=2026-07-01T00:00, lead=24h (reference at 2026-07-02T00:00)

Source	min	mean	max
Validation	9.391e+04	1.007e+05	1.039e+05
Reference	9.414e+04	1.008e+05	1.073e+05

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	1.003e+05	1.013e+05	1.018e+05
P1 Reference	1.001e+05	1.011e+05	1.018e+05
P2 Validation	1.017e+05	1.021e+05	1.024e+05
P2 Reference	1.018e+05	1.021e+05	1.024e+05

Availability — 8 of 8 positions complete

`sea_surface_temperature` [statistic=mean]

Metadata

Field	Value
units	`degree_Celsius`
long_name	Sea surface temperature
short_name	sst
standard_name	sea_surface_temperature
step_type	instant
sampled statistic	statistic=mean
comment	NaN over land where sea surface temperature does not apply.

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	n/a	n/a	n/a
P2	28.24	28.73	29.46

Spatial — init=2026-07-01T00:00, lead=24h (reference not available)

Source	min	mean	max
Validation	-1.711	14.37	33.82

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	n/a	n/a	n/a
P2 Validation	28.94	29.34	30.32

Availability — 8 of 8 positions complete

`temperature_2m` [statistic=mean]

Metadata

Field	Value
units	`degree_Celsius`
long_name	2 metre temperature
short_name	2t
standard_name	air_temperature
step_type	instant
sampled statistic	statistic=mean

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	16.13	23.7	32.87
P2	26.1	27.26	28.22

Spatial — init=2026-07-01T00:00, lead=24h (reference at 2026-07-02T00:00)

Source	min	mean	max
Validation	-71.61	8.295	39.33
Reference	-72	8.511	40.25

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	13.42	23.88	34.26
P1 Reference	17	27.45	37.5
P2 Validation	27.13	28.47	29.24
P2 Reference	26	27.45	28.62

Availability — 8 of 8 positions complete

`total_cloud_cover_atmosphere` [statistic=mean]

Metadata

Field	Value
units	`percent`
long_name	Total cloud cover
short_name	tcc
standard_name	cloud_area_fraction
step_type	instant
sampled statistic	statistic=mean

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	0.1843	19.59	65.35
P2	1.406	19	45.42

Spatial — init=2026-07-01T00:00, lead=24h (reference at 2026-07-02T00:00)

Source	min	mean	max
Validation	0.001401	68.78	99.99
Reference	0	69.82	100

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	0.2888	33.76	78.04
P1 Reference	0	23.72	100
P2 Validation	8.314	39.36	65.02
P2 Reference	0	50.37	100

Availability — 8 of 8 positions complete

`wind_speed_100m` [statistic=mean]

Metadata

Field	Value
units	`m s-1`
long_name	100 metre wind speed
short_name	100si
standard_name	wind_speed
step_type	instant
sampled statistic	statistic=mean
comment	The statistic of ensemble wind speed, not derived from the u/v statistics.

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	1.88	3.938	6.285
P2	0.8498	3.251	4.639

Spatial — init=2026-07-01T00:00, lead=24h (reference not available)

Source	min	mean	max
Validation	0.5316	8.637	31.9

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	1.479	3.738	7.766
P2 Validation	1.597	3.67	5.889

Availability — 8 of 8 positions complete

`wind_speed_10m` [statistic=mean]

Metadata

Field	Value
units	`m s-1`
long_name	10 metre wind speed
short_name	10si
standard_name	wind_speed
step_type	instant
sampled statistic	statistic=mean
comment	The statistic of ensemble wind speed, not derived from the u/v statistics.

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	1.223	2.538	4.432
P2	0.8036	3.091	4.344

Spatial — init=2026-07-01T00:00, lead=24h (reference not available)

Source	min	mean	max
Validation	0.3682	6.769	24.81

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	1.085	2.51	5.542
P2 Validation	1.581	3.472	5.438

Availability — 8 of 8 positions complete

`wind_u_100m` [statistic=mean]

Metadata

Field	Value
units	`m s-1`
long_name	100 metre U wind component
short_name	100u
standard_name	eastward_wind
step_type	instant
sampled statistic	statistic=mean

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	-4.732	-0.9974	0.9796
P2	-3.204	-2.19	-0.1794

Spatial — init=2026-07-01T00:00, lead=24h (reference at 2026-07-02T00:00)

Source	min	mean	max
Validation	-31.66	0.7031	29.53
Reference	-32.5	0.7846	30

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	-4.336	0.2564	2.353
P1 Reference	-12	-1.051	15.62
P2 Validation	-4.737	-2.414	-0.4135
P2 Reference	-4.938	-1.515	2.031

Availability — 8 of 8 positions complete

`wind_u_10m` [statistic=mean]

Metadata

Field	Value
units	`m s-1`
long_name	10 metre U wind component
short_name	10u
standard_name	eastward_wind
step_type	instant
sampled statistic	statistic=mean

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	-3.537	-0.6387	0.7859
P2	-3.069	-2.088	-0.1631

Spatial — init=2026-07-01T00:00, lead=24h (reference at 2026-07-02T00:00)

Source	min	mean	max
Validation	-23.79	0.4879	23.81
Reference	-24.25	0.5274	24.25

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	-3.316	0.1145	1.722
P1 Reference	-8.375	-0.8915	11
P2 Validation	-4.363	-2.276	-0.4244
P2 Reference	-4.562	-1.449	1.984

Availability — 8 of 8 positions complete

`wind_v_100m` [statistic=mean]

Metadata

Field	Value
units	`m s-1`
long_name	100 metre V wind component
short_name	100v
standard_name	northward_wind
step_type	instant
sampled statistic	statistic=mean

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	-3.845	0.116	5.74
P2	-0.6665	1.91	3.837

Spatial — init=2026-07-01T00:00, lead=24h (reference at 2026-07-02T00:00)

Source	min	mean	max
Validation	-24.16	0.7018	30.13
Reference	-28	0.7212	27.5

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	-6.212	0.1197	5.848
P1 Reference	-14.25	0.9771	13.12
P2 Validation	-1.361	0.9956	3.616
P2 Reference	-2.531	1.529	5.125

Availability — 8 of 8 positions complete

`wind_v_10m` [statistic=mean]

Metadata

Field	Value
units	`m s-1`
long_name	10 metre V wind component
short_name	10v
standard_name	northward_wind
step_type	instant
sampled statistic	statistic=mean

Point time series — 2026-06-30T00:00 - 2026-07-01T18:00, sampled lead=2h

Point	min	mean	max
P1	-2.172	0.1761	3.921
P2	-0.6319	1.808	3.643

Spatial — init=2026-07-01T00:00, lead=24h (reference at 2026-07-02T00:00)

Source	min	mean	max
Validation	-18.99	0.6329	21.8
Reference	-22.25	0.6287	22.25

Temporal — init=2026-07-01T00:00

Source	min	mean	max
P1 Validation	-4.346	0.076	3.109
P1 Reference	-9.125	0.5394	8.625
P2 Validation	-1.248	0.9512	3.446
P2 Reference	-2.469	1.475	4.812

Availability — 8 of 8 positions complete

Google WeatherNext 3 forecast, 15 day, 0.1 degree, virtual validation report

Summary

What looks good

Review notes

Datasets

Run parameters

Availability

Decode health

Per-variable details

cloud_cover_high [statistic=mean]

cloud_cover_low [statistic=mean]

cloud_cover_medium [statistic=mean]

dew_point_temperature_2m [statistic=mean]

downward_direct_short_wave_radiation_flux_surface [statistic=mean]

downward_short_wave_radiation_flux_surface [statistic=mean]

precipitation_experimental_surface [statistic=mean]

precipitation_imerg_surface [statistic=mean]

precipitation_surface [statistic=mean]

pressure_reduced_to_mean_sea_level [statistic=mean]

sea_surface_temperature [statistic=mean]

temperature_2m [statistic=mean]

total_cloud_cover_atmosphere [statistic=mean]

wind_speed_100m [statistic=mean]

wind_speed_10m [statistic=mean]

wind_u_100m [statistic=mean]

wind_u_10m [statistic=mean]

wind_v_100m [statistic=mean]

wind_v_10m [statistic=mean]

`cloud_cover_high` [statistic=mean]

`cloud_cover_low` [statistic=mean]

`cloud_cover_medium` [statistic=mean]

`dew_point_temperature_2m` [statistic=mean]

`downward_direct_short_wave_radiation_flux_surface` [statistic=mean]

`downward_short_wave_radiation_flux_surface` [statistic=mean]

`precipitation_experimental_surface` [statistic=mean]

`precipitation_imerg_surface` [statistic=mean]

`precipitation_surface` [statistic=mean]

`pressure_reduced_to_mean_sea_level` [statistic=mean]

`sea_surface_temperature` [statistic=mean]

`temperature_2m` [statistic=mean]

`total_cloud_cover_atmosphere` [statistic=mean]

`wind_speed_100m` [statistic=mean]

`wind_speed_10m` [statistic=mean]

`wind_u_100m` [statistic=mean]

`wind_u_10m` [statistic=mean]

`wind_v_100m` [statistic=mean]

`wind_v_10m` [statistic=mean]