GribStream

Real-Time Mesoscale Analysis (RTMA)

Código GribStream: rtma

RTMA 2 meter temperature analysis across its complete populated grid
RTMA 2 m temperature analysis across its complete populated 2.5 km grid, shared with the related analysis product family and shown with black boundaries. This plot was generated from the rtma dataset.

Descrição

RTMA (Real-Time Mesoscale Analysis) é a análise de superfície de baixa latência da NOAA/NCEP. Ela descreve o estado meteorológico recente em grade, usando uma primeira estimativa de modelo combinada com observações.

O valor do RTMA está na rapidez. Ele é indicado para dashboards, alertas, verificação operacional e workflows que precisam comparar uma previsão com o estado mais recente disponível.

No GribStream, rtma permite consultar campos por coordenada e horário, sem baixar arquivos GRIB completos. É uma boa base para temperatura, vento, umidade, pressão, cobertura de nuvens e outros campos de superfície quando disponíveis.

Como o RTMA prioriza latência, ele não incorpora todas as observações tardias. Para uma análise finalizada de maior qualidade, use URMA, que reexecuta o processo depois que chegam dados adicionais.

Detalhes

Datasets relacionados

Parâmetros

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Clique em um parâmetro para ver as variantes em uma tabela compacta, com seletores JSON prontos para copiar. Códigos, níveis e valores do seletor ficam exatamente como a API expõe.

CEIL –Ceiling Height (m)
1 variant
NOAA GRIB2 Table 4.2-0-3

Ceiling height is the altitude of the lowest cloud base that covers a significant portion of the sky. It is a key aviation and surface-visibility metric.

  • Units: m.
Level Info Horizon Introduced Selector
cloud ceiling 0h 2018-01-01
{"name":"CEIL","level":"cloud ceiling","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 2018-01-01
{"name":"DPT","level":"2 m above ground","info":""}
GUST –Wind Speed (Gust) (m/s)
1 variant
NOAA GRIB2 Table 4.2-0-2

Wind gust is the peak short-duration wind speed. It captures brief, hazardous bursts that can exceed sustained winds.

  • Units: m/s.
Level Info Horizon Introduced Selector
10 m above ground 0h 2018-01-01
{"name":"GUST","level":"10 m above ground","info":""}
HGT –Geopotential Height (gpm)
1 variant
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
surface 0h 2018-01-01
{"name":"HGT","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 2018-01-01
{"name":"PRES","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 2018-01-01
{"name":"SPFH","level":"2 m above ground","info":""}
TCDC –Total Cloud Cover (percent)
1 variant
NOAA GRIB2 Table 4.2-0-6

Total cloud cover is the fraction of the grid cell covered by clouds at any level. It influences radiation, temperature, and visibility.

  • Units: percent.
  • Cloud fraction influences surface radiation and temperature.
Level Info Horizon Introduced Selector
entire atmosphere (considered as a single layer) 0h 2018-01-01
{"name":"TCDC","level":"entire atmosphere (considered as a single layer)","info":""}
TMP –Temperature (K)
1 variant
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
2 m above ground 0h 2018-01-01
{"name":"TMP","level":"2 m above ground","info":""}
UGRD –U-Component of Wind (m/s)
1 variant
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 2018-01-01
{"name":"UGRD","level":"10 m above ground","info":""}
VGRD –V-Component of Wind (m/s)
1 variant
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 2018-01-01
{"name":"VGRD","level":"10 m above ground","info":""}
VIS –Visibility (m)
1 variant
NOAA GRIB2 Table 4.2-0-7

Horizontal visibility at the surface. Lower values indicate reduced visibility due to fog, precipitation, or aerosols.

  • Units: m.
Level Info Horizon Introduced Selector
surface 0h 2018-01-01
{"name":"VIS","level":"surface","info":""}
WDIR –Wind Direction (degrees)
1 variant
NOAA GRIB2 Table 4.2-0-2

Wind direction indicates the direction from which the wind is blowing at the specified level.

  • Units: degrees.
Level Info Horizon Introduced Selector
10 m above ground 0h 2018-01-01
{"name":"WDIR","level":"10 m above ground","info":""}
WIND –Wind Speed (m/s)
1 variant
NOAA GRIB2 Table 4.2-0-2

Wind speed is the magnitude of the horizontal wind at the specified level. It is used for transport, mixing, and hazards.

  • Units: m/s.
Level Info Horizon Introduced Selector
10 m above ground 0h 2018-01-01
{"name":"WIND","level":"10 m above ground","info":""}

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