GribStream

Taiwan CWA WRF 15 km Regional Forecast

Code GribStream: cwawrf15

Références : document technique CWA WRF 15 km, CWA Open Data sur AWS et Taiwan Open Government Data License.

Description

CWA WRF 15 km est une prévision numérique régionale de la Central Weather Administration de Taïwan. Elle apporte une vue régionale sur l'Asie orientale et le Pacifique occidental quand vous avez besoin de plus de contexte local qu'une prévision globale.

Le domaine couvre une zone large, des tropiques vers Taïwan, la mer de Chine méridionale, la mer des Philippines, les eaux proches du Japon et les couloirs météorologiques régionaux affectés par les typhons.

Le modèle utilise Weather Research and Forecasting (WRF), un système méso-échelle utilisé pour prévision opérationnelle et recherche atmosphérique. CWA publie cette configuration régionale de 15 km avec un produit WRF de plus haute résolution centré sur Taïwan ; celui-ci est l'option au domaine le plus large, avec grille Lambert conforme de 661 par 385 points et prévisions jusqu'à 84 h.

Le dataset inclut des champs sur niveaux de pression et proches de la surface : vent, température, humidité, hauteur, pression, précipitation, rayonnement et diagnostics de surface. Cette combinaison aide quand les gradients de pression, le courant directeur, la structure d'humidité et l'évolution de la précipitation comptent.

Dans GribStream, cwawrf15 est utile quand votre cas d'usage se concentre sur l'Asie orientale ou le Pacifique occidental et a besoin de contexte régional avec ECMWF IFS, GFS ou AIGFS Surface.

Détails

Datasets liés

Paramètres

Rechercher des paramètres
0 paramètres

Cliquez sur un paramètre pour voir ses variantes dans une table compacte avec des sélecteurs JSON prêts à copier. Les codes, niveaux et valeurs de sélecteur restent exactement tels que l'API les expose.

APCP –Accumulated Precipitation (kg/m^2)
1 variant
NOAA GRIB2 Table 4.2-0-1

Accumulated precipitation represents the total water-equivalent amount of rain and snow during the output period. It is a primary field for hydrologic impacts and event totals.

  • Units: kg/m^2.
  • Use with the model time interval to interpret totals and compare to gauges.
Level Info Horizon Introduced Selector
surface 0h-84h 3 days ago
{"name":"APCP","level":"surface","info":""}
DPT –Dew Point Temperature (K)
1 variant
NOAA GRIB2 Table 4.2-0-0

Dew point temperature is the temperature at which the air becomes saturated. It is a direct measure of moisture content.

  • Units: K.
  • When dew point is close to air temperature, fog or low cloud potential increases.
Level Info Horizon Introduced Selector
2 m above ground 0h-84h 3 days ago
{"name":"DPT","level":"2 m above ground","info":""}
DZDT –Vertical Velocity (Geometric) (m/s)
11 variants
NOAA GRIB2 Table 4.2-0-2

Geometric vertical velocity (dz/dt) is the vertical speed of air in height coordinates. Positive values indicate rising motion and negative values sinking motion.

  • Units: m/s.
Level Info Horizon Introduced Selector
100 mb 0h-84h 3 days ago
{"name":"DZDT","level":"100 mb","info":""}
1000 mb 0h-84h 3 days ago
{"name":"DZDT","level":"1000 mb","info":""}
150 mb 0h-84h 3 days ago
{"name":"DZDT","level":"150 mb","info":""}
200 mb 0h-84h 3 days ago
{"name":"DZDT","level":"200 mb","info":""}
250 mb 0h-84h 3 days ago
{"name":"DZDT","level":"250 mb","info":""}
300 mb 0h-84h 3 days ago
{"name":"DZDT","level":"300 mb","info":""}
400 mb 0h-84h 3 days ago
{"name":"DZDT","level":"400 mb","info":""}
500 mb 0h-84h 3 days ago
{"name":"DZDT","level":"500 mb","info":""}
700 mb 0h-84h 3 days ago
{"name":"DZDT","level":"700 mb","info":""}
850 mb 0h-84h 3 days ago
{"name":"DZDT","level":"850 mb","info":""}
925 mb 0h-84h 3 days ago
{"name":"DZDT","level":"925 mb","info":""}
HGT –Geopotential Height (gpm)
11 variants
NOAA GRIB2 Table 4.2-0-3

Geopotential height is the altitude of a pressure surface in the atmosphere. It is the primary field for identifying ridges, troughs, and large‑scale flow patterns.

  • Units: gpm.
Level Info Horizon Introduced Selector
100 mb 0h-84h 3 days ago
{"name":"HGT","level":"100 mb","info":""}
1000 mb 0h-84h 3 days ago
{"name":"HGT","level":"1000 mb","info":""}
150 mb 0h-84h 3 days ago
{"name":"HGT","level":"150 mb","info":""}
200 mb 0h-84h 3 days ago
{"name":"HGT","level":"200 mb","info":""}
250 mb 0h-84h 3 days ago
{"name":"HGT","level":"250 mb","info":""}
300 mb 0h-84h 3 days ago
{"name":"HGT","level":"300 mb","info":""}
400 mb 0h-84h 3 days ago
{"name":"HGT","level":"400 mb","info":""}
500 mb 0h-84h 3 days ago
{"name":"HGT","level":"500 mb","info":""}
700 mb 0h-84h 3 days ago
{"name":"HGT","level":"700 mb","info":""}
850 mb 0h-84h 3 days ago
{"name":"HGT","level":"850 mb","info":""}
925 mb 0h-84h 3 days ago
{"name":"HGT","level":"925 mb","info":""}
NSWRF –Net short-wave radiation flux (W/m^2)
1 variant

Net short-wave radiation flux (W/m^2).

Level Info Horizon Introduced Selector
surface 0h-84h 3 days ago
{"name":"NSWRF","level":"surface","info":""}
PRES –Pressure (Pa)
1 variant
NOAA GRIB2 Table 4.2-0-3

Pressure is the atmospheric pressure at the specified level. It is a fundamental mass-field variable for dynamics and thermodynamics.

  • Units: Pa.
Level Info Horizon Introduced Selector
surface 0h-84h 3 days ago
{"name":"PRES","level":"surface","info":""}
PRMSL –Pressure Reduced to Mean Sea Level (Pa)
1 variant
NOAA GRIB2 Table 4.2-0-3

Pressure reduced to mean sea level is MSLP computed from surface pressure and temperature. It is used to locate highs and lows.

  • Units: Pa.
Level Info Horizon Introduced Selector
mean sea level 0h-84h 3 days ago
{"name":"PRMSL","level":"mean sea level","info":""}
RH –Relative Humidity (percent)
12 variants
NOAA GRIB2 Table 4.2-0-1

Relative humidity describes how close the air is to saturation at the specified level. High values favor cloud formation.

  • Units: percent.
  • Higher values indicate more atmospheric moisture and greater cloud or precip potential.
Level Info Horizon Introduced Selector
100 mb 0h-84h 3 days ago
{"name":"RH","level":"100 mb","info":""}
1000 mb 0h-84h 3 days ago
{"name":"RH","level":"1000 mb","info":""}
150 mb 0h-84h 3 days ago
{"name":"RH","level":"150 mb","info":""}
2 m above ground 0h-84h 3 days ago
{"name":"RH","level":"2 m above ground","info":""}
200 mb 0h-84h 3 days ago
{"name":"RH","level":"200 mb","info":""}
250 mb 0h-84h 3 days ago
{"name":"RH","level":"250 mb","info":""}
300 mb 0h-84h 3 days ago
{"name":"RH","level":"300 mb","info":""}
400 mb 0h-84h 3 days ago
{"name":"RH","level":"400 mb","info":""}
500 mb 0h-84h 3 days ago
{"name":"RH","level":"500 mb","info":""}
700 mb 0h-84h 3 days ago
{"name":"RH","level":"700 mb","info":""}
850 mb 0h-84h 3 days ago
{"name":"RH","level":"850 mb","info":""}
925 mb 0h-84h 3 days ago
{"name":"RH","level":"925 mb","info":""}
SKINT –Skin temperature (K)
1 variant

Skin temperature (K).

Level Info Horizon Introduced Selector
surface 0h-84h 3 days ago
{"name":"SKINT","level":"surface","info":""}
SPFH –Specific Humidity (kg/kg)
1 variant
NOAA GRIB2 Table 4.2-0-1

Specific humidity is the mass of water vapor per mass of air at the specified level. It is central to moisture transport.

  • Units: kg/kg.
  • Higher values indicate more atmospheric moisture and greater cloud or precip potential.
Level Info Horizon Introduced Selector
2 m above ground 0h-84h 3 days ago
{"name":"SPFH","level":"2 m above ground","info":""}
TMP –Temperature (K)
13 variants
NOAA GRIB2 Table 4.2-0-0

Air temperature is the thermal state of the atmosphere at the specified level. It influences density, stability, and energy exchange.

  • Units: K.
Level Info Horizon Introduced Selector
100 mb 0h-84h 3 days ago
{"name":"TMP","level":"100 mb","info":""}
1000 mb 0h-84h 3 days ago
{"name":"TMP","level":"1000 mb","info":""}
150 mb 0h-84h 3 days ago
{"name":"TMP","level":"150 mb","info":""}
2 m above ground 0h-84h 3 days ago
{"name":"TMP","level":"2 m above ground","info":""}
200 mb 0h-84h 3 days ago
{"name":"TMP","level":"200 mb","info":""}
250 mb 0h-84h 3 days ago
{"name":"TMP","level":"250 mb","info":""}
300 mb 0h-84h 3 days ago
{"name":"TMP","level":"300 mb","info":""}
400 mb 0h-84h 3 days ago
{"name":"TMP","level":"400 mb","info":""}
500 mb 0h-84h 3 days ago
{"name":"TMP","level":"500 mb","info":""}
700 mb 0h-84h 3 days ago
{"name":"TMP","level":"700 mb","info":""}
850 mb 0h-84h 3 days ago
{"name":"TMP","level":"850 mb","info":""}
925 mb 0h-84h 3 days ago
{"name":"TMP","level":"925 mb","info":""}
mean sea level 0h-84h 3 days ago
{"name":"TMP","level":"mean sea level","info":""}
UGRD –U-Component of Wind (m/s)
12 variants
NOAA GRIB2 Table 4.2-0-2

U‑component of wind is the east‑west component of the horizontal wind. Combine with v for speed and direction.

  • Units: m/s.
  • Combine u and v components to compute speed and direction.
Level Info Horizon Introduced Selector
10 m above ground 0h-84h 3 days ago
{"name":"UGRD","level":"10 m above ground","info":""}
100 mb 0h-84h 3 days ago
{"name":"UGRD","level":"100 mb","info":""}
1000 mb 0h-84h 3 days ago
{"name":"UGRD","level":"1000 mb","info":""}
150 mb 0h-84h 3 days ago
{"name":"UGRD","level":"150 mb","info":""}
200 mb 0h-84h 3 days ago
{"name":"UGRD","level":"200 mb","info":""}
250 mb 0h-84h 3 days ago
{"name":"UGRD","level":"250 mb","info":""}
300 mb 0h-84h 3 days ago
{"name":"UGRD","level":"300 mb","info":""}
400 mb 0h-84h 3 days ago
{"name":"UGRD","level":"400 mb","info":""}
500 mb 0h-84h 3 days ago
{"name":"UGRD","level":"500 mb","info":""}
700 mb 0h-84h 3 days ago
{"name":"UGRD","level":"700 mb","info":""}
850 mb 0h-84h 3 days ago
{"name":"UGRD","level":"850 mb","info":""}
925 mb 0h-84h 3 days ago
{"name":"UGRD","level":"925 mb","info":""}
VGRD –V-Component of Wind (m/s)
12 variants
NOAA GRIB2 Table 4.2-0-2

V‑component of wind is the north‑south component of the horizontal wind. Combine with u for speed and direction.

  • Units: m/s.
  • Combine u and v components to compute speed and direction.
Level Info Horizon Introduced Selector
10 m above ground 0h-84h 3 days ago
{"name":"VGRD","level":"10 m above ground","info":""}
100 mb 0h-84h 3 days ago
{"name":"VGRD","level":"100 mb","info":""}
1000 mb 0h-84h 3 days ago
{"name":"VGRD","level":"1000 mb","info":""}
150 mb 0h-84h 3 days ago
{"name":"VGRD","level":"150 mb","info":""}
200 mb 0h-84h 3 days ago
{"name":"VGRD","level":"200 mb","info":""}
250 mb 0h-84h 3 days ago
{"name":"VGRD","level":"250 mb","info":""}
300 mb 0h-84h 3 days ago
{"name":"VGRD","level":"300 mb","info":""}
400 mb 0h-84h 3 days ago
{"name":"VGRD","level":"400 mb","info":""}
500 mb 0h-84h 3 days ago
{"name":"VGRD","level":"500 mb","info":""}
700 mb 0h-84h 3 days ago
{"name":"VGRD","level":"700 mb","info":""}
850 mb 0h-84h 3 days ago
{"name":"VGRD","level":"850 mb","info":""}
925 mb 0h-84h 3 days ago
{"name":"VGRD","level":"925 mb","info":""}

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