Google Earth Engine ——MODIS Terra/Aqua Daily NDSI归一化差异雪指数数据集

The Normalized Difference Snow Index is used to identify snow, based on its characteristically higher reflectance in the visible portion of the spectrum compared to the mid-IR. NDSI is computed using the Green and Mid-IR bands, and has a range of -1.0 to 1.0. See Riggs et al. (1994) for details. This product is generated from the MODIS/MOD09GA surface reflectance composites.

归一化差异雪指数是用来识别雪的，基于它在光谱的可见部分比中红外更高的反射率的特点。NDSI使用绿色和中红外波段进行计算，范围为-1.0到1.0。详见Riggs等人（1994）。这个产品是由MODIS/MOD09GA表面反射率合成物生成的。

Dataset Availability

2002-07-04T00:00:00 - 2017-03-30T00:00:00

Dataset Provider

Google

Collection Snippet

ee.ImageCollection("MODIS/MYD09GA_NDSI")

使用说明：

MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.

代码：

  

   

    

     

    
    

     

      var dataset = ee.ImageCollection('MODIS/MCD43A4_006_NDSI')
     
    
   

    

     

    
    

     

                        .filter(ee.Filter.date('2018-04-01', '2018-06-01'));
     
    
   

    

     

    
    

     

      var colorized = dataset.select('NDSI');
     
    
   

    

     

    
    

     

      var colorizedVis = {
     
    
   

    

     

    
    

     
  palette: ['000088', '0000FF', '8888FF', 'FFFFFF'],
     
    
   

    

     

    
    

     

      };
     
    
   

    

     

    
    

     

      Map.setCenter(-7.03125, 31.0529339857, 2);
     
    
   

    

     

    
    

     

      Map.addLayer(colorized, colorizedVis, 'Colorized');
     
    
  
 

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/120485970