Google Earth Engine ——全球资源管理系统火灾信息(FIRMS)1公里数据集

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此星光明 发表于 2022/04/16 01:36:16 2022/04/16
【摘要】 The Earth Engine version of the Fire Information for Resource Management System (FIRMS) dataset contains the LANCE fire detection product in rasterized form. The near re...

The Earth Engine version of the Fire Information for Resource Management System (FIRMS) dataset contains the LANCE fire detection product in rasterized form. The near real-time (NRT) active fire locations are processed by LANCE using the standard MODIS MOD14/MYD14 Fire and Thermal Anomalies product. Each active fire location represents the centroid of a 1km pixel that is flagged by the algorithm as containing one or more fires within the pixel. The data are rasterized as follows: for each FIRMS active fire point, a 1km bounding box (BB) is defined; pixels in the MODIS sinusoidal projection that intersect the FIRMS BB are identified; if multiple FIRMS BBs intersect the same pixel, the one with higher confidence is retained; in case of a tie, the brighter one is retained.

 

The data in the near-real-time dataset are not considered to be of science quality.

Additional information can be found here.

资源管理系统火灾信息(FIRMS)数据集的地球引擎版本包含了LANCE栅格化形式的火灾探测产品。LANCE使用标准的MODIS MOD14/MYD14火灾和热异常产品处理近实时(NRT)活动火灾位置。每个活动火点代表一个1公里像素的中心点,该像素被算法标记为包含一个或多个火点。数据的栅格化过程如下:为每个FIRMS活动火点定义一个1公里的边界框(BB);识别MODIS正弦投影中与FIRMS BB相交的像素;如果多个FIRMS BB与同一像素相交,则保留置信度较高的那个;如果出现并列,则保留较亮的那个。

近实时数据集中的数据被认为不具有科学质量。

Dataset Availability

2000-11-01T00:00:00 - 2021-09-06T00:00:00

Dataset Provider

NASA / LANCE / EOSDIS

Collection Snippet

ee.ImageCollection("FIRMS")

Resolution

1000 meters

Bands Table

Name Description Min Max Units
T21 The brightness temperature of a fire pixel using MODIS channels 21/22. K
confidence A detection confidence intended to help users gauge the quality of individual active fire pixels. The confidence estimate ranges between 0% and 100% for all fire pixels within the fire mask. The confidence field should be used with caution; it is likely that it will vary in meaning in different parts of the world. 0 100 %
line_number Line number in the FIRMS CSV file that the pixel came from.

* = Values are estimated


  
  1. var dataset = ee.ImageCollection('FIRMS').filter(
  2. ee.Filter.date('2018-08-01', '2018-08-10'));
  3. var fires = dataset.select('T21');
  4. var firesVis = {
  5. min: 325.0,
  6. max: 400.0,
  7. palette: ['red', 'orange', 'yellow'],
  8. };
  9. Map.setCenter(-119.086, 47.295, 6);
  10. Map.addLayer(fires, firesVis, 'Fires');

 

 使用说明:

NASA promotes the full and open sharing of all data with the research and applications communities, private industry, academia, and the general public. Read the [NASA Data and Information Policy] (Data & Information Policy | Science Mission Directorate).

If you provide the [Land, Atmosphere Near real-time Capability for EOS (LANCE) / Fire Information for Resource Management System (FIRMS)] (LANCE: NASA Near Real-Time Data and Imagery | Earthdata) data to a third party, follow the guidelines in the [LANCE Citation, Acknowledgements, and Disclaimer] (LANCE Citation, Acknowledgements and Disclaimer | Earthdata) site and replicate or provide a link to the [disclaimer] (LANCE Citation, Acknowledgements and Disclaimer | Earthdata).

引用:

MODIS Collection 6 NRT Hotspot / Active Fire Detections MCD14DL. Available on-line Fire Information for Resource Management System (FIRMS) | Earthdatadoi:10.5067/FIRMS/MODIS/MCD14DL.NRT.006 

文章来源: blog.csdn.net,作者:此星光明2021年博客之星云计算Top3,版权归原作者所有,如需转载,请联系作者。

原文链接:blog.csdn.net/qq_31988139/article/details/120218358

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