Este conjunto de datos proporciona un mosaico de imágenes completo con una resolución de 15 m de la capa de hielo de Groenlandia, derivado de las imágenes de Landsat 7 ETM+ y RADARSAT-1 SAR de los años 1999 a 2002. Los métodos incluyen una combinación de enmascaramiento de nubes de imágenes, nitidez panorámica, muestreo y cambio de tamaño de imágenes, y correlación de imágenes.
Consulta Howat, 2014 para obtener más información sobre los métodos de procesamiento.
Nota
Los usuarios de imágenes de mosaico de GIMP DEM o GIMP 2000 pueden encontrar útil enmascarar las áreas fuera de la costa de Groenlandia con la imagen de máscara oceánica correspondiente de 15 m, Greenland Ice Mapping Project (GIMP) Land Ice and Ocean Classification Mask.
Los datos de SAR se distribuyen con una resolución de 20 m. Los datos se muestrearon en exceso a través de la interpolación bilineal a 15 m para que coincidieran con la resolución de la banda 8 de Landsat.
Landsat 7 ETM+, infrarrojo térmico 1 de baja ganancia.
Esta banda tiene un rango dinámico expandido y una resolución radiométrica (sensibilidad) más baja, con menos saturación en valores altos del número digital (DN). Se realizó un nuevo muestreo de 60 m a 30 m.
B6_high_gain
30 metros
10.40 a 12.50 μm
Landsat 7 ETM+, infrarrojo térmico 1 de alta ganancia.
Esta banda tiene una mayor resolución radiométrica (sensibilidad), aunque tiene un rango dinámico más restringido.
Se realizó un nuevo muestreo de 60 m a 30 m.
B7
30 metros
2.08 a 2.35 μm
Landsat 7 ETM+, infrarrojo de onda corta 2
B8
15 metros
0.52 a 0.90 μm
Pancromática ETM+ de Landsat 7
B8_radarsat
15 metros
Ninguno
Imágenes de amplitud del radar de apertura sintética RADARSAT-1
Condiciones de Uso
Condiciones de Uso
Como condición para usar estos datos, debes citar el uso de este conjunto de datos con la cita proporcionada.
Citas
Citas:
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-8-1509-2014article pdf
Este conjunto de datos proporciona un mosaico de imágenes completo con una resolución de 15 m de la capa de hielo de Groenlandia, derivado de las imágenes de Landsat 7 ETM+ y RADARSAT-1 SAR de los años 1999 a 2002. Los métodos incluyen una combinación de enmascaramiento de nubes de imágenes, nitidez panorámica, muestreo y cambio de tamaño de imágenes, y correlación de imágenes. 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)"]]
