The MYD09A1 V6 product provides an estimate of the surface spectral reflectance of Aqua MODIS bands 1-7 at 500m resolution and corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh scattering. Along with the seven reflectance bands is a quality layer and four observation bands. For each pixel, a value is selected from all the acquisitions within the 8-day composite on the basis of high observation coverage, low view angle, the absence of clouds or cloud shadow, and aerosol loading.
Documentation:
MYD09A1 V6产品提供了Aqua MODIS 1-7带500米分辨率的表面光谱反射率的估计,并对大气条件如气体、气溶胶和瑞利散射进行了校正。与七个反射带一起的是一个质量层和四个观测带。对于每个像素,根据高观测覆盖率、低视角、无云或云影以及气溶胶负荷,从8天合成的所有采集中选择一个值。
Resolution
500 meters
Bands Table
Name | Description | Min | Max | Units | Wavelength | Scale |
sur_refl_b01 | Surface reflectance for band 1 | -100 | 16000 | 620-670nm | 0.0001 | |
sur_refl_b02 | Surface reflectance for band 2 | -100 | 16000 | 841-876nm | 0.0001 | |
sur_refl_b03 | Surface reflectance for band 3 | -100 | 16000 | 459-479nm | 0.0001 | |
sur_refl_b04 | Surface reflectance for band 4 | -100 | 16000 | 545-565nm | 0.0001 | |
sur_refl_b05 | Surface reflectance for band 5 | -100 | 16000 | 1230-1250nm | 0.0001 | |
sur_refl_b06 | Surface reflectance for band 6 | -100 | 16000 | 1628-1652nm | 0.0001 | |
sur_refl_b07 | Surface reflectance for band 7 | -100 | 16000 | 2105-2155nm | 0.0001 | |
QA | Surface reflectance 500m band quality control flags | 0 | ||||
QA Bitmask |
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SolarZenith | MODIS Solar zenith angle | 0 | 18000 | Degrees | 0.01 | |
ViewZenith | MODIS view zenith angle | 0 | 18000 | Degrees | 0.01 | |
RelativeAzimuth | MODIS relative azimuth angle | -18000 | 18000 | Degrees | 0.01 | |
StateQA | Surface reflectance 500m state flags | 0 | ||||
StateQA Bitmask |
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DayOfYear | Julian day of the year for the pixel | 1 | 366 |
使用说明:
Please visit LP DAAC 'Citing Our Data' page for information on citing LP DAAC datasets.
数据引用:
代码:
var dataset = ee.ImageCollection('MODIS/006/MYD09A1') .filter(ee.Filter.date('2018-01-01', '2018-05-01')); var trueColor = dataset.select(['sur_refl_b01', 'sur_refl_b04', 'sur_refl_b03']); var trueColorVis = { min: -100.0, max: 3000.0, }; Map.setCenter(6.746, 46.529, 2); Map.addLayer(trueColor, trueColorVis, 'True Color');