Bu veri kümesi, 1999-2002 yılları arasında Landsat 7 ETM+ ve RADARSAT-1 SAR görüntülerinden elde edilen Grönland buz tabakasının 15 m çözünürlüklü eksiksiz bir görüntü mozağini sunar. Bu yöntemler arasında görüntü bulutu maskeleme, keskinleştirme, görüntü örnekleme ve yeniden boyutlandırma ile görüntü ortak kaydı yer alır.
İşleme yöntemleri hakkında daha fazla bilgi için lütfen Howat, 2014'e bakın.
Not
GIMP DEM veya GIMP 2000 Image Mosaic görüntülerini kullananlar, Grönland Kıyı Şeridi dışındaki alanları ilgili 15 m okyanus maskesi görüntüsüyle maskelemeyi faydalı bulabilir. Grönland Buz Haritası Projesi (GIMP) Kara Buz ve Okyanus Sınıflandırma Maskesi,
SAR verileri 20 m çözünürlükte dağıtılır. Veriler, Landsat 8 bant çözünürlüğüyle eşleşmesi için çift doğrusal ara değer hesaplama yöntemiyle 15 m'ye yükseltildi.
Landsat 7 ETM+ düşük kazançlı termal kızılötesi 1.
Bu bant, genişletilmiş dinamik aralığa ve daha düşük radyometrik çözünürlüğe (hassasiyet) sahiptir. Yüksek dijital sayı (DN) değerlerinde daha az doygunluk görülür. 60 dakikadan 30 dakikaya yeniden örneklenmiştir.
B6_high_gain
30 metre
10,40 - 12,50 μm
Landsat 7 ETM+ yüksek kazançlı termal kızılötesi 1.
Bu bant, daha kısıtlı bir dinamik aralığa sahip olsa da daha yüksek radyometrik çözünürlüğe (hassasiyet) sahiptir.
60 dakikadan 30 dakikaya yeniden örneklenir.
Bu verileri kullanmanın koşulu olarak, verilen alıntıyı kullanarak bu veri kümesinin kullanımını alıntılamanız gerekir.
Alıntılar
Alıntılar:
Howat, I.M., C. 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
Bu veri kümesi, 1999-2002 yılları arasında Landsat 7 ETM+ ve RADARSAT-1 SAR görüntülerinden elde edilen Grönland buz tabakasının 15 m çözünürlüklü eksiksiz bir görüntü mozağini sunar. Bu yöntemler arasında görüntü bulutu maskeleme, keskinleştirme, görüntü örnekleme ve yeniden boyutlandırma ile görüntü eşleştirme yer alır. Lütfen … bölümüne bakın.
[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)"]]
