Page Summary
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This dataset is a 15-meter resolution image mosaic of the Greenland ice sheet from 1999 to 2002, created from Landsat 7 ETM+ and RADARSAT-1 SAR imagery.
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The dataset was processed using methods including cloud masking, pan sharpening, image sampling, resizing, and coregistration.
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Users may find it useful to mask areas outside the Greenland coastline using the corresponding ocean mask image.
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SAR data, originally at 20m resolution, was up-sampled to 15m using bilinear interpolation to match Landsat band-8 resolution.
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Proper citation of the dataset is required for its use.
- Dataset Availability
- 1999-06-30T00:00:00Z–2002-09-04T00:00:00Z
- Dataset Provider
- NASA NSIDC DAAC at CIRES
- Tags
Description
This dataset provides a complete 15 m resolution image mosaic of the Greenland ice sheet derived from Landsat 7 ETM+ and RADARSAT-1 SAR imagery from the years 1999 to 2002. The methods include a combination of image cloud masking, pan sharpening, image sampling and resizing, and image coregistration. Please see Howat, 2014 for more information regarding processing methods.
Note
- Users of GIMP DEM or GIMP 2000 Image Mosaic images may find it helpful to mask out areas outside of the Greenland coastline using the corresponding 15 m ocean mask image Greenland Ice Mapping Project (GIMP) Land Ice and Ocean Classification Mask,
- The SAR data are distributed at 20 m resolution. Data were up-sampled through bilinear interpolation to 15 m to match the resolution of Landsat band-8.
Bands
Bands
| Name | Pixel Size | Wavelength | Description |
|---|---|---|---|
B1
|
15 meters | 0.45 - 0.52 μm | Landsat 7 ETM+ blue |
B2
|
15 meters | 0.52 - 0.60 μm | Landsat 7 ETM+ green |
B3
|
15 meters | 0.63 - 0.69 μm | Landsat 7 ETM+ red |
B4
|
15 meters | 0.77 - 0.90 μm | Landsat 7 ETM+ near infrared |
B5
|
30 meters | 1.55 - 1.75 μm | Landsat 7 ETM+ shortwave infrared 1 |
B6_low_gain
|
30 meters | 10.40 - 12.50 μm | Landsat 7 ETM+ low-gain thermal Infrared 1. This band has expanded dynamic range and lower radiometric resolution (sensitivity), with less saturation at high Digital Number (DN) values. Resampled from 60m to 30m. |
B6_high_gain
|
30 meters | 10.40 - 12.50 μm | Landsat 7 ETM+ high-gain thermal Infrared 1. This band has higher radiometric resolution (sensitivity), although it has a more restricted dynamic range. Resampled from 60m to 30m. |
B7
|
30 meters | 2.08 - 2.35 μm | Landsat 7 ETM+ shortwave infrared 2 |
B8
|
15 meters | 0.52 - 0.90 μm | Landsat 7 ETM+ panchromatic |
B8_radarsat
|
15 meters | None | RADARSAT-1 synthetic aperture radar amplitude imagery |
Terms of Use
Terms of Use
As a condition of using these data, you must cite the use of this data set using the given citation.
Citations
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Howat, I.M., A. Negrete, B.E. Smith, 2014, The Greenland Ice Mapping Project (GIMP) land classification and surface elevation datasets, The Cryosphere, 8, 1509-1518, doi:10.5194/tc-8-1509-2014 article pdf
DOIs
Explore with Earth Engine
Code Editor (JavaScript)
var dataset = ee . Image ( 'OSU/GIMP/2000_IMAGERY_MOSAIC' ); var greenlandImage = dataset . select ([ 'B3' , 'B2' , 'B1' ]); var visParams = { min : 0.0 , max : 255.0 , }; Map . setCenter ( - 29.1605 , 70.4 , 9 ); Map . addLayer ( greenlandImage , visParams , 'Greenland Pansharpened Image' );
