Google Earth Engine ——MODIS表面反射率产品提供了在没有大气散射或吸收的情况下在地面测量的表面光谱反射率的估计。低层数据经过了大气气体和气溶胶的校正

The MODIS Surface Reflectance products provide an estimate of the surface spectral reflectance as it would be measured at ground level in the absence of atmospheric scattering or absorption. Low-level data are corrected for atmospheric gases and aerosols. MOD09GA version 6 provides bands 1-7 in a daily gridded L2G product in the sinusoidal projection, including 500m reflectance values and 1km observation and geolocation statistics.

Documentation:

• User's Guide
  
• Algorithm Theoretical Basis Document (ATBD)
  
• General Documentation
  

MODIS表面反射率产品提供了在没有大气散射或吸收的情况下在地面测量的表面光谱反射率的估计。低层数据经过了大气气体和气溶胶的校正。MOD09GA第6版在正弦投影的每日网格化L2G产品中提供了1-7个波段，包括500米反射值和1公里观测和地理位置统计。

文件。

用户指南

算法理论基础文件(ATBD)

一般文件

Dataset Availability

2000-02-24T00:00:00 - 2021-09-19T00:00:00

Dataset Provider

NASA LP DAAC at the USGS EROS Center

Collection Snippet

Copied

ee.ImageCollection("MODIS/006/MOD09GA")

Bands Table

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

数据引用：

LP DAAC - MOD09A1LP DAAC - MOD09A1

代码：

var dataset = ee.ImageCollection('MODIS/006/MOD09GA')
                  .filter(ee.Filter.date('2018-04-01', '2018-06-01'));
var trueColor143 =
    dataset.select(['sur_refl_b01', 'sur_refl_b04', 'sur_refl_b03']);
var trueColor143Vis = {
  min: -100.0,
  max: 8000.0,
};
Map.setCenter(-7.03125, 31.0529339857, 2);
Map.addLayer(trueColor143, trueColor143Vis, 'True Color (143)');