The 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 Representative Concentration Pathways (RCPs, see Meinshausen et al. 2011). The CMIP5 GCM runs were developed in support of the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC AR5).
This dataset was prepared by the Climate Analytics Group and NASA Ames Research Center using the NASA Earth Exchange, and distributed by the NASA Center for Climate Simulation (NCCS).
NASA NEX-GDDP数据集由全球降尺度气候情景组成，这些情景来自耦合模型相互比较项目第5阶段（CMIP5，见Taylor等人，2012年）下进行的一般循环模型（GCM）运行，并跨越四个温室气体排放情景中的两个情景，称为代表浓度路径（RCPs，见Meinshausen等人，2011年）。CMIP5 GCM运行是为支持政府间气候变化专门委员会第五次评估报告（IPCC AR5）而开发的。
该数据集由气候分析小组和NASA艾姆斯研究中心使用NASA地球交换系统编制，并由NASA气候模拟中心（NCCS）分发。
Dataset Availability
1950-01-01T00:00:00 - 2099-12-31T00:00:00
Dataset Provider
NASA / CSU
Collection Snippet
ee.ImageCollection("NASA/NEX-GDDP")
Resolution
27830 meters
Bands Table
Name | Description | Min* | Max* | Units |
|---|---|---|---|---|
pr | Daily mean of precipitation at surface; includes both liquid and solid phases from all types of clouds (both large-scale and convective) | 0 | 0.42 | kg/(m^2*s) |
tasmin | Daily mean of the daily-minimum near-surface air temperature | 165.31 | 318.89 | K |
tasmax | Daily mean of the daily-maximum near-surface air temperature | 188.38 | 335.13 | K |
* = Values are estimated
影像属性：
Name | Type | Description |
|---|---|---|
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'. |
scenario | String | Name of the CMIP5 scenario. It is one of: 'historical', 'rcp45', 'rcp85', where 'historical' designates retrospective model runs (pre-2006). |
year | Double | Calendar year |
month | Double | Calendar month |
day | Double | Calendar day |
引用：
Thrasher, B., J. Xiong, W. Wang, F. Melton, A. Michaelis and R. Nemani (2013), Downscaled Climate Projections Suitable for Resource Management, Eos Trans. AGU, 94(37), 321. doi:10.1002/2013EO370002
代码：
代码语言：javascript复制var dataset = ee.ImageCollection('NASA/NEX-GDDP')
.filter(ee.Filter.date('2018-07-01', '2018-07-02'));
var minimumAirTemperature = dataset.select('tasmin');
var minimumAirTemperatureVis = {
min: 240.0,
max: 300.0,
palette: ['blue', 'purple', 'cyan', 'green', 'yellow', 'red'],
};
Map.setCenter(71.72, 52.48, 3.0);
Map.addLayer(
minimumAirTemperature, minimumAirTemperatureVis, 'Minimum Air Temperature');
