Questo set di dati fornisce un mosaico di immagini completo con una risoluzione di 15 m
della calotta glaciale della Groenlandia derivato da immagini Landsat 7 ETM+ e
RADARSAT-1 SAR degli anni 1999-2002. I metodi
includono una combinazione di mascheratura delle nuvole delle immagini, pan sharpening,
campionamento e ridimensionamento delle immagini e coregistrazione delle immagini.
Per ulteriori informazioni sui metodi di elaborazione, consulta Howat, 2014.
Nota
Gli utenti delle immagini GIMP DEM o GIMP 2000 Image Mosaic potrebbero trovare
utile mascherare le aree al di fuori della costa della Groenlandia
utilizzando l'immagine della maschera dell'oceano corrispondente di 15 m
Greenland Ice Mapping Project (GIMP) Land Ice and Ocean
Classification Mask.
I dati SAR sono distribuiti con una risoluzione di 20 m. I dati sono stati
campionati con interpolazione bilineare a 15 m per corrispondere
alla risoluzione della banda 8 di Landsat.
Landsat 7 ETM+ infrarosso termico a basso guadagno 1.
Questa banda ha una gamma dinamica più ampia e una risoluzione radiometrica (sensibilità) inferiore, con una saturazione inferiore a valori elevati del numero digitale (DN). Ricampionato da
60 minuti a 30 minuti.
B6_high_gain
30 metri
10,40 - 12,50 μm
Landsat 7 ETM+ high-gain thermal Infrared 1.
Questa banda ha una risoluzione radiometrica (sensibilità) più elevata,
anche se ha una gamma dinamica più limitata.
Ricampionato da 60 m a 30 m.
B7
30 metri
2,08 - 2,35 μm
Landsat 7 ETM+ infrarosso a onde corte 2
B8
15 metri
0,52 - 0,90 μm
Landsat 7 ETM+ pancromatico
B8_radarsat
15 metri
Nessuno
Immagini di ampiezza del radar ad apertura sintetica RADARSAT-1
Termini e condizioni d'uso
Termini e condizioni d'uso
Come condizione per l'utilizzo di questi dati, devi citare l'utilizzo di questo
set di dati utilizzando la citazione fornita.
Citazioni
Citazioni:
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-8-1509-2014articolo in formato PDF
Questo set di dati fornisce un mosaico di immagini completo a una risoluzione di 15 m della calotta glaciale della Groenlandia derivato dalle immagini Landsat 7 ETM+ e RADARSAT-1 SAR degli anni 1999-2002. I metodi includono una combinazione di mascheramento delle nuvole delle immagini, pan sharpening, campionamento e ridimensionamento delle immagini e coregistrazione delle immagini. Consulta…
[null,null,[],[[["\u003cp\u003eThe Greenland Ice Mapping Project (GIMP) 2000 Imagery Mosaic provides a 15-meter resolution image of the Greenland ice sheet.\u003c/p\u003e\n"],["\u003cp\u003eThe mosaic was created using Landsat 7 ETM+ and RADARSAT-1 SAR imagery from 1999 to 2002.\u003c/p\u003e\n"],["\u003cp\u003eIt incorporates cloud masking, pan-sharpening, image sampling, resizing, and co-registration techniques.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset includes various spectral bands, such as blue, green, red, near-infrared, shortwave infrared, thermal infrared, panchromatic, and RADARSAT-1 SAR amplitude.\u003c/p\u003e\n"],["\u003cp\u003eUsers should cite Howat et al.(2014) when utilizing this dataset in their research.\u003c/p\u003e\n"]]],["This dataset offers a 15-meter resolution image mosaic of the Greenland ice sheet, created from Landsat 7 ETM+ and RADARSAT-1 SAR imagery from 1999 to 2002. Processing involved cloud masking, pan sharpening, sampling, resizing, and coregistration. The mosaic includes multiple spectral bands, with Landsat data at 15 or 30-meter resolution and up-sampled RADARSAT data. It's accessible via Earth Engine, with a provided code snippet for visualization. The dataset is distributed by NASA NSIDC DAAC at CIRES.\n"],null,["# 2000 Greenland Mosaic - Greenland Ice Mapping Project (GIMP)\n\nDataset Availability\n: 1999-06-30T00:00:00Z--2002-09-04T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA NSIDC DAAC at CIRES](https://doi.org/10.5067/4RNTRRE4JCYD)\n\nTags\n:\n [arctic](/earth-engine/datasets/tags/arctic) [gimp](/earth-engine/datasets/tags/gimp) [greenland](/earth-engine/datasets/tags/greenland) [imagery](/earth-engine/datasets/tags/imagery) [nasa](/earth-engine/datasets/tags/nasa) [polar](/earth-engine/datasets/tags/polar) [satellite-imagery](/earth-engine/datasets/tags/satellite-imagery) \nradarsat-1 \n\n#### Description\n\nThis dataset provides a complete 15 m resolution image mosaic\nof the Greenland ice sheet derived from Landsat 7 ETM+ and\nRADARSAT-1 SAR imagery from the years 1999 to 2002. The methods\ninclude a combination of image cloud masking, pan sharpening,\nimage sampling and resizing, and image coregistration.\nPlease see Howat, 2014 for more information regarding\nprocessing methods.\n\n**Note**\n\n- 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,\n- 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.\n\n[General documentation](https://doi.org/10.5067/4RNTRRE4JCYD)\n\n### Bands\n\n**Bands**\n\n| Name | Pixel Size | Wavelength | Description |\n|----------------|------------|------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `B1` | 15 meters | 0.45 - 0.52 μm | Landsat 7 ETM+ blue |\n| `B2` | 15 meters | 0.52 - 0.60 μm | Landsat 7 ETM+ green |\n| `B3` | 15 meters | 0.63 - 0.69 μm | Landsat 7 ETM+ red |\n| `B4` | 15 meters | 0.77 - 0.90 μm | Landsat 7 ETM+ near infrared |\n| `B5` | 30 meters | 1.55 - 1.75 μm | Landsat 7 ETM+ shortwave infrared 1 |\n| `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. |\n| `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. |\n| `B7` | 30 meters | 2.08 - 2.35 μm | Landsat 7 ETM+ shortwave infrared 2 |\n| `B8` | 15 meters | 0.52 - 0.90 μm | Landsat 7 ETM+ panchromatic |\n| `B8_radarsat` | 15 meters | None | RADARSAT-1 synthetic aperture radar amplitude imagery |\n\n### Terms of Use\n\n**Terms of Use**\n\nAs a condition of using these data, you must cite the use of this\ndata set using the given citation.\n\n### Citations\n\nCitations:\n\n- Howat, I.M., A. Negrete, B.E. Smith, 2014, The Greenland Ice\n Mapping Project (GIMP) land classification and surface elevation\n datasets, The Cryosphere, 8, 1509-1518,\n [doi:10.5194/tc-8-1509-2014](https://doi.org/10.5194/tc-8-1509-2014)\n [article pdf](https://www.the-cryosphere.net/8/1509/2014/tc-8-1509-2014.pdf)\n\n### DOIs\n\n- \u003chttps://doi.org/10.5067/4RNTRRE4JCYD\u003e\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.Image('OSU/GIMP/2000_IMAGERY_MOSAIC');\nvar greenlandImage = dataset.select(['B3', 'B2', 'B1']);\nvar visParams = {\n min: 0.0,\n max: 255.0,\n};\nMap.setCenter(-29.1605, 70.4, 9);\nMap.addLayer(greenlandImage, visParams, 'Greenland Pansharpened Image');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/OSU/OSU_GIMP_2000_IMAGERY_MOSAIC) \n[2000 Greenland Mosaic - Greenland Ice Mapping Project (GIMP)](/earth-engine/datasets/catalog/OSU_GIMP_2000_IMAGERY_MOSAIC) \nThis 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 ... \nOSU/GIMP/2000_IMAGERY_MOSAIC, arctic,gimp,greenland,imagery,nasa,polar,satellite-imagery \n1999-06-30T00:00:00Z/2002-09-04T00:00:00Z \n58.79601275381146 -89.3211593425295 83.95386175580668 7.555941634834938 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5067/4RNTRRE4JCYD](https://doi.org/https://doi.org/10.5067/4RNTRRE4JCYD)\n- [https://doi.org/10.5067/4RNTRRE4JCYD](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/OSU_GIMP_2000_IMAGERY_MOSAIC)"]]
