O conjunto de dados NEX-GDDP da NASA é composto por cenários climáticos reduzidos para o mundo, derivados das execuções do Modelo de Circulação Geral (GCM) realizadas no Projeto de Intercomparação de Modelos Acoplados Fase 5 (CMIP5, consulte Taylor et al. 2012) e em dois dos quatro cenários de emissões de gases de efeito estufa conhecidos como Caminhos de Concentração Representativos (RCPs, consulte Meinshausen et al. 2011).
As execuções do GCM do CMIP5 foram desenvolvidas para apoiar o Quinto Relatório de Avaliação do Painel Intergovernamental sobre Mudanças Climáticas (AR5 do IPCC).
Esse conjunto de dados foi preparado pelo Climate Analytics Group e pelo NASA Ames Research Center usando o NASA Earth Exchange e distribuído pelo NASA Center for Climate Simulation (NCCS).
Bandas
Tamanho do pixel 27830 metros
Bandas
Nome
Unidades
Mín.
Máx.
Tamanho do pixel
Descrição
pr
kg/m^2/s
0*
0,42*
metros
Média diária de precipitação na superfície, incluindo fases líquidas e sólidas de todos os tipos de nuvens (em grande escala e convectivas).
tasmin
K
165,31*
318,89*
metros
Média diária da temperatura mínima diária do ar perto da superfície
tasmax
K
188,38*
335.13*
metros
Média diária da temperatura máxima diária do ar próximo à superfície
* valor mínimo ou máximo estimado
Propriedades de imagens
Propriedades da imagem
Nome
Tipo
Descrição
modelo
STRING
Nome do modelo CMIP5. Pode ser "ACCESS1-0", "bcc-csm1-1", "BNU-ESM", "CanESM2", "CCSM4", "CESM1-BGC", "CNRM-CM5", "CSIRO-Mk3-6-0", "GFDL-CM3", "GFDL-ESM2G", "GFDL-ESM2M", "inmcm4", "IPSL-CM5A-LR", "IPSL-CM5A-MR", "MIROC-ESM", "MIROC-ESM-CHEM", "MIROC5", "MPI-ESM-LR", "MPI-ESM-MR", "MRI-CGCM3" ou "NorESM1-M".
scenario
STRING
Nome do cenário do CMIP5. Pode ser: "historical", "rcp45", "rcp85", em que "historical" designa execuções de modelos retrospectivos (antes de 2006).
Thrasher, B., Maurer, E. P., McKellar, C., & Duffy, P. B., 2012:
Technical Note: Bias correcting climate model simulated daily temperature
extremes with quantile mapping. Hydrology and Earth System Sciences,
16(9), 3309-3314.
doi:10.5194/hess-16-3309-2012
O conjunto de dados NEX-GDDP da NASA é composto por cenários climáticos reduzidos para o mundo, derivados das execuções do Modelo de Circulação Geral (GCM) realizadas no Projeto de Intercomparação de Modelos Acoplados Fase 5 (CMIP5, consulte Taylor et al. 2012) e em dois dos quatro cenários de emissões de gases de efeito estufa conhecidos como …
[null,null,[],[[["\u003cp\u003eThe NASA NEX-GDDP dataset provides downscaled climate scenarios derived from CMIP5 GCM runs, covering two greenhouse gas emissions scenarios (RCPs).\u003c/p\u003e\n"],["\u003cp\u003eIt includes daily projections of precipitation, minimum and maximum near-surface air temperature from 1950 to 2100 at a 27830-meter resolution.\u003c/p\u003e\n"],["\u003cp\u003eDeveloped by the Climate Analytics Group and NASA Ames Research Center, this dataset is publicly available without restrictions.\u003c/p\u003e\n"],["\u003cp\u003eData is available for various CMIP5 models and scenarios, including 'historical', 'rcp45', and 'rcp85'.\u003c/p\u003e\n"],["\u003cp\u003eUsers can explore the dataset and access code examples through the Google Earth Engine platform.\u003c/p\u003e\n"]]],[],null,["# NEX-GDDP: NASA Earth Exchange Global Daily Downscaled Climate Projections\n\nDataset Availability\n: 1950-01-01T00:00:00Z--2100-12-31T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA / Climate Analytics Group](https://www.nccs.nasa.gov/services/data-collections/land-based-products/nex-gddp)\n\nCadence\n: 1 Day\n\nTags\n:\n[cag](/earth-engine/datasets/tags/cag) [climate](/earth-engine/datasets/tags/climate) [cmip5](/earth-engine/datasets/tags/cmip5) [gddp](/earth-engine/datasets/tags/gddp) [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-GDDP dataset is comprised of downscaled climate scenarios\nfor the globe that are derived from the General Circulation Model (GCM)\nruns conducted under the Coupled Model Intercomparison Project Phase 5\n(CMIP5, see [Taylor et al. 2012](https://journals.ametsoc.org/doi/abs/10.1175/BAMS-D-11-00094.1))\nand across two of the four greenhouse gas emissions scenarios known as\nRepresentative Concentration Pathways (RCPs, see [Meinshausen et\nal. 2011](https://rd.springer.com/article/10.1007%2Fs10584-011-0156-z#page-1)).\nThe CMIP5 GCM runs were developed in support of the Fifth Assessment\nReport of the Intergovernmental Panel on Climate Change (IPCC AR5).\n\nThis dataset 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\n27830 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|----------|-----------|----------|----------|------------|------------------------------------------------------------------------------------------------------------------------------------------|\n| `pr` | kg/m\\^2/s | 0\\* | 0.42\\* | meters | Daily mean of precipitation at surface; includes both liquid and solid phases from all types of clouds (both large-scale and convective) |\n| `tasmin` | K | 165.31\\* | 318.89\\* | meters | Daily mean of the daily-minimum near-surface air temperature |\n| `tasmax` | K | 188.38\\* | 335.13\\* | meters | Daily 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| model | STRING | Name of the CMIP5 model. It is one of 'ACCESS1-0', 'bcc-csm1-1', 'BNU-ESM', 'CanESM2', 'CCSM4', 'CESM1-BGC', 'CNRM-CM5', 'CSIRO-Mk3-6-0', 'GFDL-CM3', 'GFDL-ESM2G', 'GFDL-ESM2M', 'inmcm4', 'IPSL-CM5A-LR', 'IPSL-CM5A-MR', 'MIROC-ESM', 'MIROC-ESM-CHEM', 'MIROC5', 'MPI-ESM-LR', 'MPI-ESM-MR', 'MRI-CGCM3', 'NorESM1-M'. |\n| scenario | STRING | Name of the CMIP5 scenario. It is one of: 'historical', 'rcp45', 'rcp85', where 'historical' designates retrospective model runs (pre-2006). |\n| year | DOUBLE | Calendar year |\n| month | DOUBLE | Calendar month |\n| day | DOUBLE | Calendar day |\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., Maurer, E. P., McKellar, C., \\& Duffy, P. B., 2012:\n Technical Note: Bias correcting climate model simulated daily temperature\n extremes with quantile mapping. Hydrology and Earth System Sciences,\n 16(9), 3309-3314.\n [doi:10.5194/hess-16-3309-2012](https://doi.org/10.5194/hess-16-3309-2012)\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-GDDP')\n .filter(ee.Filter.date('2018-07-01', '2018-07-02'));\nvar minimumAirTemperature = dataset.select('tasmin');\nvar minimumAirTemperatureVis = {\n min: 240.0,\n max: 300.0,\n palette: ['blue', 'purple', 'cyan', 'green', 'yellow', 'red'],\n};\nMap.setCenter(71.72, 52.48, 3.0);\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-GDDP) \n[NEX-GDDP: NASA Earth Exchange Global Daily Downscaled Climate Projections](/earth-engine/datasets/catalog/NASA_NEX-GDDP) \nThe NASA NEX-GDDP dataset is comprised of downscaled climate scenarios for the globe 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 two of the four greenhouse gas emissions scenarios known as ... \nNASA/NEX-GDDP, cag,climate,cmip5,gddp,geophysical,ipcc,nasa,nex,precipitation,temperature \n1950-01-01T00:00:00Z/2100-12-31T00:00:00Z \n-90 -180 90 180 \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-gddp)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NASA_NEX-GDDP)"]]
