在本研究中,我们采用了粒子群优化-反向传播(PSO-BP)算法等一系列方法,统一了DMSP/OLS和NPP/VIIRS影像的尺度,获得了1992-2019年间连续的1公里×1公里网格化夜间光照数据。随后,从修正的实际增长角度,我们采用自上而下的方法,根据我们校准的夜间光照数据,计算出1992-2019年全球1公里×1公里网格化的修正实际GDP和电力消耗。
网格化人口和夜间光照数据是最受欢迎的替代工具,由于其与经济产出和用电有很强的相关性而被广泛采用。最后作者指出,虽然夜间光照数据作为一个单一的指标可能会忽略一些因素,如附加值或因林业或荒漠化而减少的因素,但它仍然是校准经济增长的有效代理工具。你可以在这里阅读该论文
免责声明:该数据集的全部或部分描述由作者或其作品提供。
Chen, J., Gao, M., Cheng, S., Hou, W., Song, M., Liu, X., & Liu, Y. (2022). Global 1 km× 1 km gridded revised real gross domestic product and electricity consumption during 1992–2019 based on calibrated nighttime light data. Scientific Data, 9(1), 1-14. https://doi.org/10.1038/ s41597-022-01322-5
Chen, Jiandong; Gao, Ming (2021): Global 1 km × 1 km gridded revised real gross domestic product and electricity consumption during 1992-2019 based on calibrated nighttime light data. figshare. Dataset. https://doi.org/10.6084/m9.figshare.17004523.v1
国内生产总值:2017年的百万美元 电力消耗:千瓦时
//GRIDDED电力消耗
var global_ec = ee.ImageCollection("projects/sat-io/open-datasets/GRIDDED_EC");
//个例
var imageCollection = ee.ImageCollection("projects/sat-io/open-datasets/GRIDDED_EC")
var time_start = imageCollection
.reduceColumns(ee.Reducer.toList(), ['system:time_start'])
.get('list');
time_start.evaluate(
function (time_start) {
time_start.forEach(
function (date) {
var images = imageCollection.filterMetadata('system:time_start', 'equals', date);
var year = new Date(date).getFullYear();
Map.addLayer(images, {
min:0,
max: 10e6,
palette:["black","white","orange","yellow","gold","red",]
}, 'Electricity Consumption(kwh) '+String(year),false);
});
}
);
//基于电力消耗的GRIDDED GDP
//var global_elc_gdp = ee.ImageCollection("projects/sat-io/open-datasets/GRIDDED_EC-GDP");
var imageCollection = ee.ImageCollection("projects/sat-io/open-datasets/GRIDDED_EC-GDP")
var time_start = imageCollection
.reduceColumns(ee.Reducer.toList(), ['system:time_start'])
.get('list');
time_start.evaluate(
function (time_start) {
time_start.forEach(
function (date) {
var images = imageCollection.filterMetadata('system:time_start', 'equals', date);
var year = new Date(date).getFullYear();
Map.addLayer(images, {
min:0,
max: 34,
palette:["black","white","orange","yellow","gold","red",]
}, 'GDP US Dollars Millions (2017) '+String(year),false);
});
}
);
2019年 电力消费(KWH)
1992年
2019年GDP百万美金消费