GribStream

DMI HARMONIE DINI Surface Forecasts

Name: DMI HARMONIE DINI Surface Forecasts via GribStream
Creator: Danish Meteorological Institute
License: https://creativecommons.org/licenses/by/4.0/

GribStream Code: dmidini

DMI DINI 2 meter temperature across the complete Northwestern Europe grid — DMI DINI 2 m temperature across its complete populated 2 km Northwestern Europe and North Atlantic footprint, with black country boundaries. This plot was generated from the dmidini dataset.

Current GribStream source: dmidini is a selective moving-window mirror of DMI Open Data HARMONIE_DINI_SF, focused on surface solar, wind, and basic meteorological context.

Scope note: This page covers the deterministic DINI surface product. DMI also publishes DINI pressure-level, model-level, EPS means, EPS percentiles, EPS probabilities, and IG products for Iceland/Greenland as separate source products; those are not part of dmidini yet.

Wind-vector note: DMI documents the U/V wind components as relative to the Lambert projection. GribStream preserves those source components; rotate them before deriving Earth-relative wind direction or vectors in another coordinate reference system.

Official references: DMI HARMONIE DINI and IG documentation, DMI HARMONIE DINI surface metadata, DMI Open Data HARMONIE_DINI_SF source, and AWS Open Data registry entry.

Description

DMI HARMONIE DINI is Danish Meteorological Institute's high-resolution regional forecast product for Northwestern Europe. DMI describes DINI as the HARMONIE domain covering Denmark, Iceland, Netherlands, and Ireland, with ECMWF boundary conditions and a 2 km grid.

In GribStream, dmidini starts with the surface fields most useful for application builders: solar radiation, 10 m and 100 m wind, cloud, temperature, humidity, visibility, pressure, and accumulated precipitation. It complements global models such as IFS and GFS by exposing finer regional structure over the DINI domain.

The product is especially interesting for energy and operations teams. Solar fields help estimate short-range irradiance conditions, while 100 m U/V wind components provide context closer to turbine hub-height workflows than a standard 10 m surface wind alone.

DMI uses one source name for each parameter and statistical processing to distinguish instantaneous, accumulated, maximum, and minimum series. GribStream keeps those names visible: for example, dswrf with empty info is instantaneous downward shortwave flux in W/m^2, while info = "acc" is energy accumulated from run start in J/m^2. Only accumulated dswrf and direct-solar-exposure begin at lead time 1 hour; other available accumulated fields retain DMI's lead-zero value.

Detail

Archive window: Last 5 days
Official documentation: https://www.dmi.dk/friedata/dokumentation/data/forecast-data-weather-model-harmonie-for-dini-and-ig
Key features:
- 2 km regional HARMONIE DINI surface guidance over Northwestern Europe.
- Solar and radiation fields including direct solar, downward shortwave, global radiation, and net shortwave radiation.
- Wind fields including 10 m wind speed, direction, gust, and 10 m and 100 m U/V components.
- Near-surface context for temperature, dew point, relative humidity, cloud cover, visibility, pressure, and accumulated precipitation.
- Coordinate, time, and selector-based access through recent moving-window retention.
Resolution: DMI documents the DINI source as a 2 km Northwestern Europe Lambert grid.
Temporal coverage: DMI documents HARMONIE runs every hour and deterministic DINI outputs collected every third hour. GribStream mirrors the supported surface product with hourly forecast steps through 60 hours in the retained recent window.
Primary uses: Solar generation forecasting, wind-resource operations, 100 m wind screening, regional weather dashboards, transport and field operations, model comparison against IFS or GFS, and incident review while data remains in the retained recent window.

Related datasets

Parameters

Click a parameter to reveal variants in a compact table with ready-to-copy JSON selectors.

100u –100 m U wind component (m/s)

1 variant

DMI HARMONIE 100 m U wind component relative to the native Lambert grid.

DMI documents native U/V components as grid-relative; rotate them before deriving Earth-relative vectors in another coordinate reference system.

Level	Info	Horizon	Introduced	Selector
`100 m above ground`		0h-60h	5 days ago	`{"name":"100u","level":"100 m above ground","info":""}`

100v –100 m V wind component (m/s)

1 variant

DMI HARMONIE 100 m V wind component relative to the native Lambert grid.

DMI documents native U/V components as grid-relative; rotate them before deriving Earth-relative vectors in another coordinate reference system.

Level	Info	Horizon	Introduced	Selector
`100 m above ground`		0h-60h	5 days ago	`{"name":"100v","level":"100 m above ground","info":""}`

10si –10 m wind speed (m/s)

1 variant

DMI HARMONIE horizontal wind speed at 10 m above the surface.

Level	Info	Horizon	Introduced	Selector
`10 m above ground`		0h-60h	5 days ago	`{"name":"10si","level":"10 m above ground","info":""}`

10u –10 m U wind component (m/s)

1 variant

DMI HARMONIE 10 m U wind component relative to the native Lambert grid.

DMI documents native U/V components as grid-relative; rotate them before deriving Earth-relative vectors in another coordinate reference system.

Level	Info	Horizon	Introduced	Selector
`10 m above ground`		0h-60h	5 days ago	`{"name":"10u","level":"10 m above ground","info":""}`

10v –10 m V wind component (m/s)

1 variant

DMI HARMONIE 10 m V wind component relative to the native Lambert grid.

DMI documents native U/V components as grid-relative; rotate them before deriving Earth-relative vectors in another coordinate reference system.

Level	Info	Horizon	Introduced	Selector
`10 m above ground`		0h-60h	5 days ago	`{"name":"10v","level":"10 m above ground","info":""}`

10wdir –10 m wind direction (degree true)

1 variant

DMI HARMONIE 10 m wind direction in degrees from true north.

Level	Info	Horizon	Introduced	Selector
`10 m above ground`		0h-60h	5 days ago	`{"name":"10wdir","level":"10 m above ground","info":""}`

2d –2 m dewpoint temperature (K)

1 variant

DMI HARMONIE dewpoint temperature at 2 m above the surface.

Level	Info	Horizon	Introduced	Selector
`2 m above ground`		0h-60h	5 days ago	`{"name":"2d","level":"2 m above ground","info":""}`

2r –2 m relative humidity (% (0-100))

1 variant

DMI HARMONIE relative humidity at 2 m above the surface.

Level	Info	Horizon	Introduced	Selector
`2 m above ground`		0h-60h	5 days ago	`{"name":"2r","level":"2 m above ground","info":""}`

2t –2 m temperature (K)

3 variants

DMI HARMONIE 2 m temperature, including instantaneous, preceding-hour maximum, and preceding-hour minimum series.

The DMI short name remains 2t for all three series; GribStream distinguishes them with empty, max, and min info values.

Level	Info	Horizon	Introduced	Selector
`2 m above ground`		0h-60h	5 days ago	`{"name":"2t","level":"2 m above ground","info":""}`
`2 m above ground`	`max`	0h-60h	5 days ago	`{"name":"2t","level":"2 m above ground","info":"max"}`
`2 m above ground`	`min`	0h-60h	5 days ago	`{"name":"2t","level":"2 m above ground","info":"min"}`

cc –Fraction of cloud cover (fraction (0-1))

1 variant

Fraction of the grid area covered by cloud, encoded from 0 to 1.

Level	Info	Horizon	Introduced	Selector
`0 m above ground`		0h-60h	5 days ago	`{"name":"cc","level":"0 m above ground","info":""}`

direct-solar-exposure –Direct solar exposure (J/m^2)

1 variant

Time-integrated direct solar irradiance accumulated from the beginning of the DMI HARMONIE run.

DMI's static GRIB table reports this field's short name as unknown; GribStream uses DMI's official EDR parameter name instead.
DMI does not provide this field at the first model step.

Level	Info	Horizon	Introduced	Selector
`0 m above ground`	`acc`	1h-60h	5 days ago	`{"name":"direct-solar-exposure","level":"0 m above ground","info":"acc"}`

dswrf –Downward short-wave radiation (W/m^2 instantaneous; J/m^2 accumulated)

2 variants

DMI HARMONIE downward short-wave radiation as separate instantaneous flux and run-to-date accumulated energy series.

Use empty info for instantaneous W/m^2 values and acc for cumulative J/m^2 values.
DMI does not provide the accumulated field at the first model step.

Level	Info	Horizon	Introduced	Selector
`0 m above ground`		0h-60h	5 days ago	`{"name":"dswrf","level":"0 m above ground","info":""}`
`0 m above ground`	`acc`	1h-60h	5 days ago	`{"name":"dswrf","level":"0 m above ground","info":"acc"}`

grad –Accumulated global solar radiation (J/m^2)

1 variant

Total direct and diffuse solar radiation accumulated from the beginning of the DMI HARMONIE run.

The source parameter is a flux in W/m^2; GRIB accumulation makes the returned run-to-date value energy in J/m^2.

Level	Info	Horizon	Introduced	Selector
`0 m above ground`	`acc`	0h-60h	5 days ago	`{"name":"grad","level":"0 m above ground","info":"acc"}`

gust –10 m wind gust maximum (m/s)

1 variant

Maximum DMI HARMONIE 10 m wind gust over the preceding output hour.

The max info value preserves GRIB statistical processing type 2.

Level	Info	Horizon	Introduced	Selector
`10 m above ground`	`max`	0h-60h	5 days ago	`{"name":"gust","level":"10 m above ground","info":"max"}`

hcc –High cloud cover (% (0-100))

1 variant

DMI HARMONIE high cloud cover on a 0-100 percent scale.

Level	Info	Horizon	Introduced	Selector
`0 m above ground`		0h-60h	5 days ago	`{"name":"hcc","level":"0 m above ground","info":""}`

lcc –Low cloud cover (% (0-100))

1 variant

DMI HARMONIE low cloud cover on a 0-100 percent scale.

Level	Info	Horizon	Introduced	Selector
`0 m above ground`		0h-60h	5 days ago	`{"name":"lcc","level":"0 m above ground","info":""}`

mcc –Medium cloud cover (% (0-100))

1 variant

DMI HARMONIE medium cloud cover on a 0-100 percent scale.

Level	Info	Horizon	Introduced	Selector
`0 m above ground`		0h-60h	5 days ago	`{"name":"mcc","level":"0 m above ground","info":""}`

nswrf –Accumulated net short-wave radiation (J/m^2)

2 variants

Net short-wave radiation accumulated from run start, available at the surface and nominal model top.

The source parameter is a flux in W/m^2; GRIB accumulation makes the returned run-to-date value energy in J/m^2.

Level	Info	Horizon	Introduced	Selector
`0 m above ground`	`acc`	0h-60h	5 days ago	`{"name":"nswrf","level":"0 m above ground","info":"acc"}`
`top of atmosphere`	`acc`	0h-60h	5 days ago	`{"name":"nswrf","level":"top of atmosphere","info":"acc"}`

pres –Surface pressure (Pa)

1 variant

DMI HARMONIE atmospheric pressure at the surface.

Level	Info	Horizon	Introduced	Selector
`0 m above ground`		0h-60h	5 days ago	`{"name":"pres","level":"0 m above ground","info":""}`

rprate –Accumulated rain precipitation (kg/m^2)

1 variant

Rain precipitation accumulated from the beginning of the DMI HARMONIE run.

The source parameter is a rate in kg/m^2/s; GRIB accumulation makes the returned run-to-date value an amount in kg/m^2.

Level	Info	Horizon	Introduced	Selector
`0 m above ground`	`acc`	0h-60h	5 days ago	`{"name":"rprate","level":"0 m above ground","info":"acc"}`

tp –Accumulated total precipitation (kg/m^2)

1 variant

Total precipitation accumulated from the beginning of the DMI HARMONIE run.

The acc info value identifies GRIB statistical processing type 1; values are cumulative rather than independent hourly totals.

Level	Info	Horizon	Introduced	Selector
`surface`	`acc`	0h-60h	5 days ago	`{"name":"tp","level":"surface","info":"acc"}`

tsrwe –Accumulated snowfall water equivalent (kg/m^2)

1 variant

Snowfall water equivalent accumulated from the beginning of the DMI HARMONIE run.

The source parameter is a rate in kg/m^2/s; GRIB accumulation makes the returned run-to-date value an amount in kg/m^2.

Level	Info	Horizon	Introduced	Selector
`0 m above ground`	`acc`	0h-60h	5 days ago	`{"name":"tsrwe","level":"0 m above ground","info":"acc"}`

vis –Visibility (m)

1 variant

DMI HARMONIE horizontal visibility near the surface.

Level	Info	Horizon	Introduced	Selector
`0 m above ground`		0h-60h	5 days ago	`{"name":"vis","level":"0 m above ground","info":""}`

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