Google Earth Engine——南极洲高程模型（REMA）2米和8米的空间分辨率数据集

镶嵌后REMA数据

The Reference Elevation Model of Antarctica (REMA) is a high resolution, time-stamped Digital Surface Model (DSM) of Antarctica at 2-meter and 8-meter spatial resolutions.

Mosaicked DEM files are compiled from multiple strips that have been co-registered, blended, and feathered to reduce edge-matching artifacts.

南极洲参考高程模型（REMA）是一个高分辨率、有时间戳的南极洲数字表面模型（DSM），具有2米和8米的空间分辨率。

镶嵌的DEM文件是由多个条带汇编而成的，这些条带经过共同登记、混合和羽化，以减少边缘匹配的人工痕迹。

Dataset Availability

2009-01-01T00:00:00 - 2018-01-01T00:00:00

Dataset Provider

University of Minnesota Polar Geospatial Center

Collection Snippet

ee.Image("UMN/PGC/REMA/V1_1/8m")

Resolution

8 meters

Bands Table

数据说明：

美国国家科学基金会（PGC的主要资金来源）的政策要求研究人员在所有出版物、网页和媒体采访中承认NSF的支持。

通过在地球引擎中使用PGC数据，用户同意引用PGC及其由NSF提供的赞助。由PGC提供的任何第三方数据的原始来源也必须适当注明。

数据引用：

Howat, I. M., Porter, C., Smith, B. E., Noh, M.-J., and Morin, P.: The Reference Elevation Model of Antarctica, The Cryosphere, 13, 665-674, 2019.

TC - The Reference Elevation Model of Antarctica

代码：

var mosaic = ee.Image('UMN/PGC/REMA/V1_1/8m');

Map.setCenter(85, -75, 3);

var elevationVis = {
  bands: ['elevation'],
  min: -50.0,
  max: 1000.0,
  palette: ['0d13d8', '60e1ff', 'ffffff'],
};

Map.addLayer(mosaic, elevationVis, 'REMA_DEM_mosaic_8m');

2m分辨率数据：

Strip DEM files correspond to the overlapping area of the input stereoscopic imagery pair strips as they are collected by DigitalGlobe’s constellation of polar-orbiting satellites. Strip DEM dimensions will vary according to the satellite sensor that acquired the images and the off-nadir angle of collection. Most strips are between 13 km and 17 km in width, and 110 km and 120 km in length.

条状DEM文件与输入的立体图像对条的重叠区域相对应，因为它们是由数字地球公司的极地轨道卫星群收集的。条状DEM的尺寸将根据获取图像的卫星传感器和收集的离地角度而变化。大多数条带的宽度在13公里到17公里之间，长度在110公里到120公里之间。

Collection Snippet

ee.ImageCollection("UMN/PGC/REMA/V1/2m")

Resolution

2 meters

波段信息：

• Bit 0: Pixel processing
  • 0: Pixels have been interpolated
  • 1: Pixels are derived from a stereo match

代码：

var collection = ee.ImageCollection('UMN/PGC/REMA/V1/2m');

Map.setCenter(85, -75, 3);

var elevationVis = {
  bands: ['elevation'],
  min: -50.0,
  max: 1000.0,
  palette: ['0d13d8', '60e1ff', 'ffffff'],
};

Map.addLayer(collection, elevationVis, 'REMA_DEM_strips_2m');

8m分辨率数据：

Collection Snippet

ee.ImageCollection("UMN/PGC/REMA/V1/8m")

Resolution

8 meters

波段信息

• Bit 0: Pixel processing
  • 0: Pixels have been interpolated
  • 1: Pixels are derived from a stereo match

代码：

var collection = ee.ImageCollection('UMN/PGC/REMA/V1/8m');

Map.setCenter(85, -75, 3);

var elevationVis = {
  bands: ['elevation'],
  min: -50.0,
  max: 1000.0,
  palette: ['0d13d8', '60e1ff', 'ffffff'],
};

Map.addLayer(collection, elevationVis, 'REMA_DEM_strips_8m');