Il set di dati NASA NEX-DCP30 è composto da scenari climatici ridimensionati
per gli Stati Uniti contigui, derivati dalle esecuzioni del modello di
circolazione generale (GCM) condotte nell'ambito del Coupled Model
Intercomparison Project Phase 5 (CMIP5, vedi Taylor et al. 2012)
e nei quattro scenari di emissioni di gas serra noti come
Representative Concentration Pathways (RCP, vedi Meinshausen et al. 2011)
sviluppati per il quinto report di valutazione dell'Intergovernmental Panel
on Climate Change (IPCC AR5). Lo scopo di questi set di dati è fornire
un insieme di proiezioni sul cambiamento climatico ad alta risoluzione e corrette per il bias che
possono essere utilizzate per valutare gli impatti del cambiamento climatico sui processi sensibili
ai gradienti climatici su scala più fine e agli effetti della topografia locale sulle condizioni climatiche.
Il set di dati contiene proiezioni mensili che coprono i periodi dal 1950 al 2005 (esecuzione retrospettiva) e dal 2006 al 2099 (esecuzione prospettica).
Include proiezioni ridimensionate di 33 modelli. Non tutti gli scenari contengono proiezioni di ogni modello.
NEX-DCP30 è stato preparato dal Climate Analytics Group e dal NASA Ames
Research Center utilizzando il NASA Earth Exchange e distribuito dal NASA
Center for Climate Simulation (NCCS).
Bande
Dimensioni in pixel 927,67 metri
Bande
Nome
Unità
Min
Max
Dimensioni dei pixel
Descrizione
pr
kg/m^2/s
0*
0,0016*
metri
Media mensile del tasso di precipitazione giornaliero in superficie;
include le fasi liquida e solida di tutti i tipi di nuvole
(sia su larga scala che convettive)
tasmin
K
235,91*
308,97*
metri
Media mensile della temperatura dell'aria giornaliera minima vicino alla superficie
tasmax
K
246,4*
325,53*
metri
Media mensile della temperatura dell'aria vicino alla superficie giornaliera massima
* valore minimo o massimo stimato
Proprietà immagini
Proprietà immagine
Nome
Tipo
Descrizione
scenario
STRING
Nome dello scenario CMIP5. Può essere uno dei seguenti valori: "historical", "rcp26", "rcp45", "rcp60", "rcp85", dove "historical" indica
le esecuzioni del modello retrospettivo (precedenti al 2006).
modello
STRING
Nome del modello CMIP5. Può assumere uno dei seguenti valori: "ACCESS1-0",
"bcc-csm1-1", "bcc-csm1-1-m", "BNU-ESM", "CanESM2", "CCSM4",
"CESM1-BGC", "CESM1-CAM5", "CMCC-CM", "CNRM-CM5", "CSIRO-Mk3-6-0",
"FGOALS-g2", "FIO-ESM", "GFDL-CM3", "GFDL-ESM2G", "GFDL-ESM2M",
"GISS-E2-H-CC", "GISS-E2-R", "GISS-E2-R-CC", "HadGEM2-AO",
"HadGEM2-CC", "HadGEM2-ES", "inmcm4", "IPSL-CM5A-LR", "IPSL-CM5A-MR",
"IPSL-CM5B-LR", "MIROC5", "MIROC-ESM", "MIROC-ESM-CHEM", "MPI-ESM-LR",
"MPI-ESM-MR", "MRI-CGCM3", "NorESM1-M".
Thrasher, B., J. Xiong, W. Wang, F. Melton, A. Michaelis e R. Nemani
(2013), Downscaled Climate Projections Suitable for Resource Management,
Eos Trans. AGU, 94(37), 321.
doi:10.1002/2013EO370002
Il set di dati NASA NEX-DCP30 è composto da scenari climatici ridimensionati per gli Stati Uniti contigui, derivati dalle esecuzioni del modello di circolazione generale (GCM) condotte nell'ambito del Coupled Model Intercomparison Project Phase 5 (CMIP5, vedi Taylor et al. 2012) e nei quattro scenari di emissioni di gas serra noti come…
[null,null,[],[[["\u003cp\u003eNEX-DCP30 provides downscaled climate projections for the conterminous United States, derived from CMIP5 models and RCP scenarios.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset includes monthly projections of precipitation and temperature from 1950 to 2099 at a 927-meter resolution.\u003c/p\u003e\n"],["\u003cp\u003eProjections are available for 33 climate models and four greenhouse gas emissions scenarios (RCPs).\u003c/p\u003e\n"],["\u003cp\u003eNEX-DCP30 was developed by the Climate Analytics Group and NASA, and is freely available for use and distribution.\u003c/p\u003e\n"],["\u003cp\u003eData can be accessed and analyzed using Google Earth Engine.\u003c/p\u003e\n"]]],["The NASA NEX-DCP30 dataset provides downscaled climate projections for the US from 1950 to 2099, derived from CMIP5 GCM runs and IPCC AR5 emissions scenarios. The data, available monthly, includes precipitation rate (`pr`), minimum (`tasmin`) and maximum (`tasmax`) air temperature. It offers projections from 33 models, across historical and future scenarios. The dataset is accessible via the Earth Engine with the snippet: `ee.ImageCollection(\"NASA/NEX-DCP30\")` and is in the public domain.\n"],null,["# NEX-DCP30: NASA Earth Exchange Downscaled Climate Projections\n\nDataset Availability\n: 1950-01-01T00:00:00Z--2099-12-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA / Climate Analytics Group](https://www.nccs.nasa.gov/services/data-collections/land-based-products/nex-dcp30)\n\nCadence\n: 1 Month\n\nTags\n:\n[cag](/earth-engine/datasets/tags/cag) [climate](/earth-engine/datasets/tags/climate) [cmip5](/earth-engine/datasets/tags/cmip5) [geophysical](/earth-engine/datasets/tags/geophysical) [ipcc](/earth-engine/datasets/tags/ipcc) [nasa](/earth-engine/datasets/tags/nasa) [nex](/earth-engine/datasets/tags/nex) [precipitation](/earth-engine/datasets/tags/precipitation) [temperature](/earth-engine/datasets/tags/temperature) \n\n#### Description\n\nThe NASA NEX-DCP30 dataset is comprised of downscaled climate scenarios\nfor the conterminous United States that are derived from the General\nCirculation Model (GCM) runs conducted under the Coupled Model\nIntercomparison Project Phase 5 (CMIP5, see [Taylor et al. 2012](https://journals.ametsoc.org/doi/abs/10.1175/BAMS-D-11-00094.1))\nand across the four greenhouse gas emissions scenarios known as\nRepresentative Concentration Pathways (RCPs, see [Meinshausen et al. 2011](https://rd.springer.com/article/10.1007%2Fs10584-011-0156-z#page-1))\ndeveloped for the Fifth Assessment Report of the Intergovernmental Panel\non Climate Change (IPCC AR5). The purpose of these datasets is to provide\na set of high resolution, bias-corrected climate change projections that\ncan be used to evaluate climate change impacts on processes that are\nsensitive to finer-scale climate gradients and the effects of local\ntopography on climate conditions.\n\nThe dataset contains monthly projections covering the periods from 1950\nthrough 2005 (Retrospective Run) and from 2006 to 2099 (Prospective Run).\nIt includes downscaled projections from 33 models. Not every\nscenario contains projections from every model.\n\nNEX-DCP30 was prepared by the Climate Analytics Group and NASA Ames\nResearch Center using the NASA Earth Exchange, and distributed by the NASA\nCenter for Climate Simulation (NCCS).\n\n### Bands\n\n\n**Pixel Size**\n\n927.67 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|----------|-----------|----------|----------|------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `pr` | kg/m\\^2/s | 0\\* | 0.0016\\* | meters | Monthly mean of the daily precipitation rate at surface; includes both liquid and solid phases from all types of clouds (both large-scale and convective) |\n| `tasmin` | K | 235.91\\* | 308.97\\* | meters | Monthly mean of the daily-minimum near-surface air temperature |\n| `tasmax` | K | 246.4\\* | 325.53\\* | meters | Monthly mean of the daily-maximum near-surface air temperature |\n\n\\* estimated min or max value\n\n### Image Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|----------|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| scenario | STRING | Name of the CMIP5 scenario. It is one of: 'historical', 'rcp26', 'rcp45', 'rcp60', 'rcp85', where 'historical' designates retrospective model runs (pre-2006). |\n| model | STRING | Name of the CMIP5 model. It is one of 'ACCESS1-0', 'bcc-csm1-1', 'bcc-csm1-1-m', 'BNU-ESM', 'CanESM2', 'CCSM4', 'CESM1-BGC', 'CESM1-CAM5', 'CMCC-CM', 'CNRM-CM5', 'CSIRO-Mk3-6-0', 'FGOALS-g2', 'FIO-ESM', 'GFDL-CM3', 'GFDL-ESM2G', 'GFDL-ESM2M', 'GISS-E2-H-CC', 'GISS-E2-R', 'GISS-E2-R-CC', 'HadGEM2-AO', 'HadGEM2-CC', 'HadGEM2-ES', 'inmcm4', 'IPSL-CM5A-LR', 'IPSL-CM5A-MR', 'IPSL-CM5B-LR', 'MIROC5', 'MIROC-ESM', 'MIROC-ESM-CHEM', 'MPI-ESM-LR', 'MPI-ESM-MR', 'MRI-CGCM3', 'NorESM1-M'. |\n| metric | DOUBLE | Calendar month |\n\n### Terms of Use\n\n**Terms of Use**\n\nThis dataset is in the public domain and is available\nwithout restriction on use and distribution. See [NASA's\nEarth Science Data \\& Information Policy](https://www.earthdata.nasa.gov/engage/open-data-services-and-software/data-and-information-policy)\nfor additional information.\n\n### Citations\n\nCitations:\n\n- Thrasher, B., J. Xiong, W. Wang, F. Melton, A. Michaelis and R. Nemani\n (2013), Downscaled Climate Projections Suitable for Resource Management,\n Eos Trans. AGU, 94(37), 321.\n [doi:10.1002/2013EO370002](https://doi.org/10.1002/2013EO370002)\n\n### Explore with Earth Engine\n\n| **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\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.ImageCollection('NASA/NEX-DCP30')\n .filter(ee.Filter.date('2018-07-01', '2018-07-30'));\nvar minimumAirTemperature = dataset.select('tasmin');\nvar minimumAirTemperatureVis = {\n min: 265.0,\n max: 285.0,\n palette: ['blue', 'purple', 'cyan', 'green', 'yellow', 'red'],\n};\nMap.setCenter(-115.356, 38.686, 5);\nMap.addLayer(\n minimumAirTemperature, minimumAirTemperatureVis, 'Minimum Air Temperature');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NASA/NASA_NEX-DCP30) \n[NEX-DCP30: NASA Earth Exchange Downscaled Climate Projections](/earth-engine/datasets/catalog/NASA_NEX-DCP30) \nThe NASA NEX-DCP30 dataset is comprised of downscaled climate scenarios for the conterminous United States that are derived from the General Circulation Model (GCM) runs conducted under the Coupled Model Intercomparison Project Phase 5 (CMIP5, see Taylor et al. 2012) and across the four greenhouse gas emissions scenarios known as ... \nNASA/NEX-DCP30, cag,climate,cmip5,geophysical,ipcc,nasa,nex,precipitation,temperature \n1950-01-01T00:00:00Z/2099-12-01T00:00:00Z \n24.07 -125.03 53.74 -66.47 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.nccs.nasa.gov/services/data-collections/land-based-products/nex-dcp30)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NASA_NEX-DCP30)"]]
