Set data NASA NEX-DCP30 terdiri dari skenario iklim yang di-downscale untuk Amerika Serikat yang berdekatan, yang berasal dari proses General Circulation Model (GCM) yang dilakukan dalam Coupled Model Intercomparison Project Phase 5 (CMIP5, lihat Taylor et al. 2012) dan di empat skenario emisi gas rumah kaca yang dikenal sebagai Representative Concentration Pathways (RCP, lihat Meinshausen et al. 2011) yang dikembangkan untuk Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC AR5). Tujuan dari set data ini adalah untuk menyediakan serangkaian proyeksi perubahan iklim beresolusi tinggi dan bebas bias yang dapat digunakan untuk mengevaluasi dampak perubahan iklim pada proses yang sensitif terhadap gradien iklim skala yang lebih halus dan efek topografi lokal terhadap kondisi iklim.
Set data berisi proyeksi bulanan yang mencakup periode dari tahun 1950 hingga 2005 (Retrospective Run) dan dari tahun 2006 hingga 2099 (Prospective Run).
Data ini mencakup proyeksi yang diperkecil dari 33 model. Tidak setiap
skenario berisi proyeksi dari setiap model.
NEX-DCP30 disiapkan oleh Climate Analytics Group dan NASA Ames Research Center menggunakan NASA Earth Exchange, dan didistribusikan oleh NASA Center for Climate Simulation (NCCS).
Band
Ukuran Piksel 927,67 meter
Band
Nama
Unit
Min
Maks
Ukuran Piksel
Deskripsi
pr
kg/m^2/s
0*
0,0016*
meter
Rata-rata bulanan laju presipitasi harian di permukaan; mencakup fase cair dan padat dari semua jenis awan (baik skala besar maupun konvektif)
tasmin
K
235,91*
308,97*
meter
Rata-rata bulanan suhu udara dekat permukaan minimum harian
tasmax
K
246,4*
325,53*
meter
Rata-rata bulanan suhu udara dekat permukaan maksimum harian
* perkiraan nilai min atau maks
Properti Gambar
Properti Gambar
Nama
Jenis
Deskripsi
skenario
STRING
Nama skenario CMIP5. Nilainya adalah salah satu dari: 'historical',
'rcp26', 'rcp45', 'rcp60', 'rcp85', dengan 'historical' menunjukkan
model retrospektif berjalan (sebelum tahun 2006).
model
STRING
Nama model CMIP5. Nilainya adalah salah satu dari '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'.
metrik
DOUBLE
Bulan kalender
Persyaratan Penggunaan
Persyaratan Penggunaan
Set data ini berada di domain publik dan tersedia tanpa batasan penggunaan dan distribusi. Lihat Kebijakan Data & Informasi Ilmu Bumi NASA untuk mengetahui informasi tambahan.
Kutipan
Kutipan:
Thrasher, B., J. Xiong, W. Wang, F. Melton, A. Michaelis dan R. Nemani
(2013), Downscaled Climate Projections Suitable for Resource Management,
Eos Trans. AGU, 94(37), 321.
doi:10.1002/2013EO370002
Set data NASA NEX-DCP30 terdiri dari skenario iklim yang di-downscale untuk Amerika Serikat yang berbatasan dengan Kanada dan Meksiko, yang berasal dari proses General Circulation Model (GCM) yang dilakukan dalam Coupled Model Intercomparison Project Phase 5 (CMIP5, lihat Taylor et al. 2012) dan di seluruh empat skenario emisi gas rumah kaca yang dikenal sebagai …
[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)"]]
