NASA NEX-DCP30 데이터 세트는 결합 모델 비교 프로젝트 5단계 (CMIP5, Taylor et al. 2012 참고)에 따라 실행된 일반 순환 모델 (GCM)에서 파생되고 기후 변화에 관한 정부 간 패널 (IPCC AR5)의 5차 평가 보고서에 맞게 개발된 대표 농도 경로 (RCP, Meinshausen et al. 2011 참고)로 알려진 4가지 온실가스 배출 시나리오에 걸쳐 있는 미국 본토의 축소된 기후 시나리오로 구성됩니다. 이러한 데이터 세트의 목적은 미세한 규모의 기후 경사와 기후 조건에 대한 지역 지형의 영향을 민감하게 받는 프로세스에 대한 기후 변화 영향을 평가하는 데 사용할 수 있는 고해상도, 편향 보정 기후 변화 예측을 제공하는 것입니다.
데이터 세트에는 1950년부터 2005년까지 (회고적 실행) 및 2006년부터 2099년까지 (전망적 실행)의 기간을 포함하는 월별 예측이 포함되어 있습니다.
여기에는 pr, tasmin, tasmax 밴드에 사용할 수 있는 모든 모델 실행에서 각 RCP에 대해 계산된 앙상블 통계가 포함됩니다.
NEX-DCP30은 NASA Earth Exchange를 사용하여 Climate Analytics Group과 NASA Ames Research Center에서 준비했으며 NASA Center for Climate Simulation (NCCS)에서 배포했습니다.
대역
픽셀 크기 927.67미터
대역
이름
단위
최소
최대
픽셀 크기
설명
pr_mean
kg/m^2/s
0*
0.0006*
미터
표면에서의 일일 강수량의 월별 평균입니다. 모든 유형의 구름(대규모 및 대류)에서 발생하는 액체 및 고체 단계가 모두 포함됩니다.
pr_quartile25
kg/m^2/s
0*
0.0004*
미터
표면 강수량의 25번째 사분위수입니다. 모든 유형의 구름 (대규모 및 대류)에서 액체 및 고체 단계를 모두 포함합니다.
pr_median
kg/m^2/s
0*
0.0006*
미터
지표면에서의 강수량의 중앙값입니다. 모든 유형의 구름 (대규모 및 대류)에서 발생하는 액체 및 고체 단계를 모두 포함합니다.
pr_quartile75
kg/m^2/s
0*
0.0008*
미터
지표면 강수의 75번째 사분위수입니다. 모든 유형의 구름 (대규모 및 대류)에서 액체 및 고체 단계를 모두 포함합니다.
tasmin_mean
K
247.58*
311.09*
미터
일일 최저 지표면 기온의 월별 평균
tasmin_quartile25
K
243.28*
310.06*
미터
일일 최저 지표면 공기 온도의 25번째 백분위수
tasmin_median
K
246.87*
311.12*
미터
일일 최소 지표면 기온의 중앙값
tasmin_quartile75
K
248.42*
312.59*
미터
일일 최소 지표면 기온의 75번째 사분위수
tasmax_mean
K
258.47*
326.48*
미터
일일 최대 지표면 기온의 월별 평균
tasmax_quartile25
K
256.13*
325.52*
미터
일일 최대 지표면 근처 공기 온도의 25번째 사분위수
tasmax_median
K
257.89*
326.28*
미터
일일 최대 지표면 공기 온도의 중앙값
tasmax_quartile75
K
260.2*
328.2*
미터
일일 최대 지표면 기온의 75번째 사분위수
* 예상 최솟값 또는 최댓값
이미지 속성
이미지 속성
이름
유형
설명
시나리오
문자열
CMIP5 시나리오의 이름입니다. 'historical', 'rcp26', 'rcp45', 'rcp60', 'rcp85' 중 하나입니다. 여기서 'historical'은 회고 모델 실행 (2006년 이전)을 나타냅니다.
Thrasher, B., J. Xiong, W. Wang, F. Melton, A. Michaelis 및 R. Nemani
(2013), Downscaled Climate Projections Suitable for Resource Management,
Eos Trans. AGU, 94(37), 321.
doi:10.1002/2013EO370002
NASA NEX-DCP30 데이터 세트는 접합 대순환 모델 5 (CMIP5, Taylor et al. 2012 참고)에 따라 실행된 일반 순환 모델 (GCM)에서 파생되고 …로 알려진 4가지 온실가스 배출 시나리오에 걸쳐 있는 미국 본토의 다운스케일링된 기후 시나리오로 구성됩니다.
[null,null,[],[[["\u003cp\u003eThe NASA NEX-DCP30 dataset provides downscaled climate projections for the conterminous United States, including monthly temperature and precipitation data.\u003c/p\u003e\n"],["\u003cp\u003eProjections cover historical data from 1950-2005 and future scenarios from 2006-2099 under four Representative Concentration Pathways (RCPs).\u003c/p\u003e\n"],["\u003cp\u003eData is derived from CMIP5 General Circulation Model runs and has a spatial resolution of 927.67 meters.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset includes ensemble statistics (mean, quartiles, and median) for daily precipitation rate, minimum and maximum near-surface air temperature.\u003c/p\u003e\n"],["\u003cp\u003eNEX-DCP30 is publicly available and can be accessed through Google Earth Engine.\u003c/p\u003e\n"]]],["The NASA NEX-DCP30 dataset provides monthly climate projections for the US from 1950-2099, derived from CMIP5 and IPCC AR5 emissions scenarios. It includes ensemble statistics for precipitation (`pr`), minimum (`tasmin`), and maximum (`tasmax`) temperatures, with each divided into mean, 25th quartile, median, and 75th quartile values. The data, bias-corrected and high-resolution, is intended to assess climate change impacts, and is available via the Google Earth Engine using the provided code snippet. The dataset is public domain.\n"],null,["# NEX-DCP30: Ensemble Stats for 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 ensemble statistics calculated for each RCP from all model\nruns available for the pr, tasmin, and tasmax bands.\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_mean` | kg/m\\^2/s | 0\\* | 0.0006\\* | 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| `pr_quartile25` | kg/m\\^2/s | 0\\* | 0.0004\\* | meters | 25th quartile of the precipitation at surface; includes both liquid and solid phases from all types of clouds (both large-scale and convective) |\n| `pr_median` | kg/m\\^2/s | 0\\* | 0.0006\\* | meters | Median of precipitation at surface; includes both liquid and solid phases from all types of clouds (both large-scale and convective) |\n| `pr_quartile75` | kg/m\\^2/s | 0\\* | 0.0008\\* | meters | 75th quartile of the precipitation at surface; includes both liquid and solid phases from all types of clouds (both large-scale and convective) |\n| `tasmin_mean` | K | 247.58\\* | 311.09\\* | meters | Monthly mean of the daily-minimum near-surface air temperature |\n| `tasmin_quartile25` | K | 243.28\\* | 310.06\\* | meters | 25th quartile the daily-minimum near-surface air temperature |\n| `tasmin_median` | K | 246.87\\* | 311.12\\* | meters | Median of the daily-minimum near-surface air temperature |\n| `tasmin_quartile75` | K | 248.42\\* | 312.59\\* | meters | 75th quartile of the daily-minimum near-surface air temperature |\n| `tasmax_mean` | K | 258.47\\* | 326.48\\* | meters | Monthly mean of the daily-maximum near-surface air temperature |\n| `tasmax_quartile25` | K | 256.13\\* | 325.52\\* | meters | 25th quartile of the daily-maximum near-surface air temperature |\n| `tasmax_median` | K | 257.89\\* | 326.28\\* | meters | Median of the daily-maximum near-surface air temperature |\n| `tasmax_quartile75` | K | 260.2\\* | 328.2\\* | meters | 75th quartile 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| month | 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_ENSEMBLE_STATS')\n .filter(ee.Filter.date('2018-07-01', '2018-07-30'));\nvar monthlyMeanMinimumAirTemperature = dataset.select('tasmin_mean');\nvar monthlyMeanMinimumAirTemperatureVis = {\n min: 247.0,\n max: 311.0,\n palette: ['blue', 'purple', 'cyan', 'green', 'yellow', 'red'],\n};\nMap.setCenter(-115.356, 38.686, 5);\nMap.addLayer(\n monthlyMeanMinimumAirTemperature, monthlyMeanMinimumAirTemperatureVis,\n 'Monthly Mean Minimum Air Temperature');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NASA/NASA_NEX-DCP30_ENSEMBLE_STATS) \n[NEX-DCP30: Ensemble Stats for NASA Earth Exchange Downscaled Climate Projections](/earth-engine/datasets/catalog/NASA_NEX-DCP30_ENSEMBLE_STATS) \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_ENSEMBLE_STATS, cag,climate,cmip5,geophysical,ipcc,nasa,nex,precipitation,temperature \n1950-01-01T00:00:00Z/2099-12-01T00:00:00Z \n24.07 -125.03 49.93 -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_ENSEMBLE_STATS)"]]
