Der NASA NEX-DCP30-Datensatz umfasst heruntergerechnete Klimaszenarien für die kontinentalen USA, die aus den Läufen des General Circulation Model (GCM) abgeleitet wurden, die im Rahmen des Coupled Model Intercomparison Project Phase 5 (CMIP5, siehe Taylor et al. 2012) und über die vier Treibhausgasemissionsszenarien, die als Representative Concentration Pathways (RCPs, siehe Meinshausen et al. 2011) bekannt sind, durchgeführt wurden, die für den fünften Sachstandsbericht des Intergovernmental Panel on Climate Change (IPCC AR5) entwickelt wurden. Ziel dieser Datasets ist es, eine Reihe von hochauflösenden, bias-korrigierten Klimawandelprognosen bereitzustellen, mit denen sich die Auswirkungen des Klimawandels auf Prozesse bewerten lassen, die auf Klimagradienten im kleineren Maßstab und die Auswirkungen der lokalen Topografie auf die Klimabedingungen reagieren.
Das Dataset enthält monatliche Prognosen für die Zeiträume von 1950 bis 2005 (retrospektiver Lauf) und von 2006 bis 2099 (prospektiver Lauf).
Sie enthält heruntergerechnete Prognosen aus 33 Modellen. Nicht jedes Szenario enthält Prognosen aus jedem Modell.
NEX-DCP30 wurde von der Climate Analytics Group und dem NASA Ames Research Center mit dem NASA Earth Exchange erstellt und vom NASA Center for Climate Simulation (NCCS) vertrieben.
Bänder
Pixelgröße 927,67 Meter
Bänder
Name
Einheiten
Min.
Max.
Pixelgröße
Beschreibung
pr
kg/m²/s
0*
0,0016*
Meter
Monatlicher Mittelwert der täglichen Niederschlagsrate an der Oberfläche; umfasst sowohl flüssige als auch feste Phasen aller Arten von Wolken (sowohl großflächige als auch konvektive)
tasmin
K
235.91*
308,97*
Meter
Monatlicher Mittelwert der täglichen Mindesttemperatur der bodennahen Luft
tasmax
K
246,4*
325,53*
Meter
Monatlicher Mittelwert der täglichen Höchsttemperatur der bodennahen Luft
* geschätzter Mindest- oder Höchstwert
Bildattribute
Bildattribute
Name
Typ
Beschreibung
scenario
STRING
Name des CMIP5-Szenarios. Mögliche Werte sind: „historical“, „rcp26“, „rcp45“, „rcp60“, „rcp85“. „historical“ steht für retrospektive Modellläufe (vor 2006).
Modell
STRING
Name des CMIP5-Modells. Mögliche Werte sind „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“ und „NorESM1-M“.
Thrasher, B., J. Xiong, W. Wang, F. Melton, A. Michaelis und R. Nemani
(2013), Downscaled Climate Projections Suitable for Resource Management,
Eos Trans. AGU, 94(37), 321.
doi:10.1002/2013EO370002
Das NASA NEX-DCP30-Dataset umfasst heruntergerechnete Klimaszenarien für die kontinentalen USA, die aus den GCM-Läufen (General Circulation Model) abgeleitet wurden, die im Rahmen des Coupled Model Intercomparison Project Phase 5 (CMIP5, siehe Taylor et al. 2012) und in den vier Treibhausgasemissionsszenarien durchgeführt wurden, die als …
[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)"]]
