L'analyse mésoscopique en temps réel (RTMA, Real-Time Mesoscale Analysis) est une analyse à haute résolution spatiale et temporelle des conditions météorologiques en surface. Ce jeu de données inclut des analyses horaires à 2,5 km pour les États-Unis continentaux.
Bracelets
Taille des pixels 2 500 mètres
Bandes de fréquences
Nom
Unités
Min
Max
Taille des pixels
Description
HGT
m
-81*
4226*
mètres
Modéliser l'élévation du terrain
PRES
Pa
60848*
105183*
mètres
Pression
TMP
°C
-43,2*
43,73*
mètres
Température
DPT
°C
-81,41*
30,92*
mètres
Température du point de rosée
UGRD
m/s
-32,93*
34.04*
mètres
Composante U du vent
VGRD
m/s
-28,44*
39.21*
mètres
Composante V du vent
SPFH
Fraction massique
0*
0,02*
mètres
Humidité spécifique
WDIR
deg
0*
360*
mètres
Direction du vent (d'où il souffle)
WIND
m/s
0*
42,46*
mètres
Vitesse du vent
GUST
m/s
0*
58.02*
mètres
Vitesse du vent (rafales)
VIS
m
0*
20 000*
mètres
Visibilité
TCDC
%
0*
100*
mètres
Couverture nuageuse totale
ACPC01
kg/m^2
0*
1*
mètres
Précipitations totales
* valeur minimale ou maximale estimée
Conditions d'utilisation
Conditions d'utilisation
Les données, informations et produits de la NOAA, quelle que soit la méthode de diffusion, ne sont pas soumis au droit d'auteur et ne comportent aucune restriction quant à leur utilisation ultérieure par le public. Une fois obtenues, elles peuvent être utilisées à des fins légales. Les données ci-dessus appartiennent au domaine public et sont fournies sans restriction d'utilisation ni de distribution. Pour en savoir plus, consultez le site d'exclusion de responsabilité de NWS.
L'analyse mésoscopique en temps réel (RTMA, Real-Time Mesoscale Analysis) est une analyse à haute résolution spatiale et temporelle des conditions météorologiques en surface. Cet ensemble de données inclut des analyses horaires à 2,5 km pour les États-Unis contigus.
[null,null,[],[[["\u003cp\u003eThe Real-Time Mesoscale Analysis (RTMA) dataset provides hourly, 2.5 km resolution analyses of near-surface weather conditions for the Continental US (CONUS).\u003c/p\u003e\n"],["\u003cp\u003eIt includes various weather parameters like temperature, wind speed, humidity, precipitation, and cloud cover.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is freely available for use without restrictions, provided by NOAA/NWS.\u003c/p\u003e\n"],["\u003cp\u003eIt covers the period from January 1, 2011, to December 12, 2024.\u003c/p\u003e\n"],["\u003cp\u003eUsers can explore and analyze the RTMA dataset using Google Earth Engine.\u003c/p\u003e\n"]]],["The NOAA/NWS RTMA dataset provides hourly, 2.5 km resolution analyses of near-surface weather conditions for CONUS from 2011-01-01 to 2025-02-22. It includes data on pressure, temperature, dew point, wind (speed, direction, and components), humidity, cloud cover, and precipitation, among other parameters. The data, provided by NOAA/NWS, is available via Google Earth Engine and is free to use without restriction. The dataset is updated every hour, with a pixel size of 2500 meters.\n"],null,["Dataset Availability\n: 2011-01-01T00:00:00Z--2025-08-31T18:00:00Z\n\nDataset Provider\n:\n\n\n [NOAA/NWS](https://www.nco.ncep.noaa.gov/pmb/products/rtma/)\n\nCadence\n: 1 Hour\n\nTags\n:\n [atmosphere](/earth-engine/datasets/tags/atmosphere) [climate](/earth-engine/datasets/tags/climate) [cloud](/earth-engine/datasets/tags/cloud) [geophysical](/earth-engine/datasets/tags/geophysical) [humidity](/earth-engine/datasets/tags/humidity) [noaa](/earth-engine/datasets/tags/noaa) [nws](/earth-engine/datasets/tags/nws) [precipitation](/earth-engine/datasets/tags/precipitation) [pressure](/earth-engine/datasets/tags/pressure) [surface](/earth-engine/datasets/tags/surface) [temperature](/earth-engine/datasets/tags/temperature) [weather](/earth-engine/datasets/tags/weather) [wind](/earth-engine/datasets/tags/wind) \n rtma \nvisibility \n\nDescription \nThe Real-Time Mesoscale Analysis (RTMA) is a high-spatial and temporal\nresolution analysis for near-surface weather conditions. This dataset\nincludes hourly analyses at 2.5 km for CONUS.\n\nBands\n\n\n**Pixel Size**\n\n2500 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|----------|---------------|----------|----------|------------|-------------------------------------|\n| `HGT` | m | -81\\* | 4226\\* | meters | Model terrain elevation |\n| `PRES` | Pa | 60848\\* | 105183\\* | meters | Pressure |\n| `TMP` | °C | -43.2\\* | 43.73\\* | meters | Temperature |\n| `DPT` | °C | -81.41\\* | 30.92\\* | meters | Dew point temperature |\n| `UGRD` | m/s | -32.93\\* | 34.04\\* | meters | U-component of wind |\n| `VGRD` | m/s | -28.44\\* | 39.21\\* | meters | V-component of wind |\n| `SPFH` | Mass fraction | 0\\* | 0.02\\* | meters | Specific humidity |\n| `WDIR` | deg | 0\\* | 360\\* | meters | Wind direction (from which blowing) |\n| `WIND` | m/s | 0\\* | 42.46\\* | meters | Wind speed |\n| `GUST` | m/s | 0\\* | 58.02\\* | meters | Wind speed (gust) |\n| `VIS` | m | 0\\* | 20000\\* | meters | Visibility |\n| `TCDC` | % | 0\\* | 100\\* | meters | Total cloud cover |\n| `ACPC01` | kg/m\\^2 | 0\\* | 1\\* | meters | Total precipitation |\n\n\\* estimated min or max value\n\nTerms of Use\n\n**Terms of Use**\n\nNOAA data, information, and products, regardless of the method of delivery,\nare not subject to copyright and carry no restrictions on their subsequent\nuse by the public. Once obtained, they may be put to any lawful use. The\nforgoing data is in the public domain and is being provided without\nrestriction on use and distribution. For more information visit the\n[NWS disclaimer site](https://www.weather.gov/disclaimer/).\n\nExplore with Earth Engine **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\nCode Editor (JavaScript) \n\n```javascript\nvar dataset = ee.ImageCollection('NOAA/NWS/RTMA')\n .filter(ee.Filter.date('2018-03-01', '2018-03-02'));\nvar windSpeed = dataset.select('WIND');\nvar windSpeedVis = {\n min: 0.0,\n max: 12.0,\n palette: ['001137', '01abab', 'e7eb05', '620500'],\n};\nMap.setCenter(-95.62, 39.91, 4);\nMap.addLayer(windSpeed, windSpeedVis, 'Wind Speed');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NOAA/NOAA_NWS_RTMA) \n[RTMA: Real-Time Mesoscale Analysis](/earth-engine/datasets/catalog/NOAA_NWS_RTMA) \nThe Real-Time Mesoscale Analysis (RTMA) is a high-spatial and temporal resolution analysis for near-surface weather conditions. This dataset includes hourly analyses at 2.5 km for CONUS. \nNOAA/NWS/RTMA, atmosphere,climate,cloud,geophysical,humidity,noaa,nws,precipitation,pressure,surface,temperature,weather,wind \n2011-01-01T00:00:00Z/2025-08-31T18:00:00Z \n20.15 -130.17 52.91 -60.81 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.nco.ncep.noaa.gov/pmb/products/rtma/)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NOAA_NWS_RTMA)"]]
