Google Earth Engine（GEE）——大尺度范围的GIMMS NDVI From AVHRR Sensors (3rd Generation)如何下载？

问题：NOAA的GIMMS NDVI怎么下载吗？

今天有个粉丝问到数据如何下载，按我们简单写一篇博客来分析一下，其实很简单。

数据集：GIMMS NDVI From AVHRR Sensors (3rd Generation)

Dataset Availability

1981-07-01T00:00:00 - 2013-12-31T00:00:00

Dataset Provider

NASA/NOAA

Collection Snippet

Copied

ee.ImageCollection("NASA/GIMMS/3GV0")

Resolution

9277 meters

Bands Table

• Bits 0-2: QA flag values
  • 1: Good value
  • 2: Good value
  • 3: NDVI retrieved from spline interpolation
  • 4: NDVI retrieved from spline interpolation, possibly snow
  • 5: NDVI retrieved from average seasonal profile
  • 6: NDVI retrieved from average seasonal profile, possibly snow
  • 7: Missing data

代码：

var hh= ee.FeatureCollection("users/bqt2000204051/shanxijie");
var start = ee.Date.fromYMD(2000,1,1);
var end = ee.Date.fromYMD(2000,12,31);

var scol= ee.ImageCollection("NASA/GIMMS/3GV0")
          .filterBounds(hh)
          .filterDate(start,end);
var ndvi_before =scol.qualityMosaic('ndvi').clip(hh);

Map.addLayer(ndvi_before, {}, 'scolNDVI');

Export.image.toDrive({
    image: ndvi_before.select('ndvi'),
    region:hh,
    scale:1000,
    description: "shanxi_ndvi_2000",
    folder: 'shanxi_NDVI',
  })

大家换自己的矢量区域区下载就行了，不过分辨率很低，建议大家自己把握！