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Google Earth Engine(GEE)——基于 MCD64A1 的 GlobFire 日常火灾数据集
2022-07-04 22:03:00 【此星光明】
基于 MODIS 数据集 MCD64A1 的火灾边界。数据是基于一种算法计算的,该算法依赖于在图形结构中编码烧毁区域补丁之间的时空关系。
每场火灾都有一个唯一的编号来标识事件。
Dataset Availability
2001-01-01T00:00:00Z–2021-01-01T00:00:00
Dataset Provider
European Commission, Joint Research Centre, Global Wildfire Information System
数据调用:
'JRC/GWIS/GlobFire/v2/DailyPerimeters'
代码:
// 直接从文件夹中调用,这里没有featurecollection.
var folder = 'JRC/GWIS/GlobFire/v2/DailyPerimeters';
// 使用带有异步回调的ee.data.listAssets列出可用表格。
function printAssetList(listAssetsOutput) {
print('Asset list:', listAssetsOutput['assets']);
}
ee.data.listAssets(folder, {}, printAssetList);
// 定义一个从可用表列表中确定的表名(表ID)。
var tableName = 'JRC/GWIS/GlobFire/v2/DailyPerimeters/2020';
var computeArea = function (f) {
return f.set({'area': f.area()});
}
// 将一个选定的表作为一个特征集合导入。
var features = ee.FeatureCollection(tableName).map(computeArea);
// 线性火灾面积梯度的可视化参数。
var visParams = {
palette: ['f5ff64', 'b5ffb4', 'beeaff', 'ffc0e8', '8e8dff', 'adadad'],
min: 0.0,
max: 600000000.0,
opacity: 0.8,
};
// 用计算出的火灾面积作为数值属性,在图像上画出火灾周界。
var image = ee.Image().float().paint(features, 'area')
// 将图像显示在地图上(包括用检查员探索的特征)。
Map.addLayer(image, visParams, 'GlobFire 2020');
Map.addLayer(features, null, 'For Inspector', false);
Map.setCenter(-121.23, 39.7, 12);
Terms of Use
Licensed under the Creative Commons Attribution 4.0 International License.
Citations:
Artés, T., Oom, D., De Rigo, D., Durrant, T. H., Maianti, P., Libertà, G., & San-Miguel-Ayanz, J. (2019). A global wildfire dataset for the analysis of fire regimes and fire behaviour. Scientific data, 6(1), 1-11. doi:10.1038/s41597-019-0312-2
结果:
不同等级的火灾显示情况:
点击查看相应的信息火灾面积等等
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