이 데이터 세트는 1999~2002년 Landsat 7 ETM+ 및 RADARSAT-1 SAR 이미지에서 파생된 그린란드 빙상의 완전한 15m 해상도 이미지 모자이크를 제공합니다. 이러한 방법에는 이미지 클라우드 마스킹, 팬 선명화, 이미지 샘플링 및 크기 조절, 이미지 공동 등록이 포함됩니다.
처리 방법에 관한 자세한 내용은 Howat(2014)을 참고하세요.
참고
GIMP DEM 또는 GIMP 2000 이미지 모자이크 이미지를 사용하는 경우 해당 15m 해양 마스크 이미지인 Greenland Ice Mapping Project (GIMP) Land Ice and Ocean Classification Mask를 사용하여 그린란드 해안선 외부 영역을 마스크 처리하는 것이 유용할 수 있습니다.
SAR 데이터는 20m 해상도로 배포됩니다. 데이터는 Landsat 밴드 8의 해상도와 일치하도록 양선형 보간을 통해 15m로 업샘플링되었습니다.
Landsat 7 ETM+ 저이득 열 적외선 1.
이 밴드는 동적 범위가 확장되고 방사선 측정 해상도 (감도)가 낮으며 높은 디지털 번호 (DN) 값에서 포화가 적습니다. 60분에서 30분으로 리샘플링되었습니다.
B6_high_gain
30미터
10.40~12.50μm
Landsat 7 ETM+ 고이득 열 적외선 1.
이 대역은 동적 범위가 더 제한적이지만 방사 측정 해상도 (감도)가 더 높습니다.
60분에서 30분으로 리샘플링되었습니다.
B7
30미터
2.08~2.35μm
Landsat 7 ETM+ 단파 적외선 2
B8
15미터
0.52~0.90μm
Landsat 7 ETM+ 흑백
B8_radarsat
15미터
없음
RADARSAT-1 합성개구레이더 진폭 이미지
이용약관
이용약관
이 데이터를 사용하려면 제공된 인용을 사용하여 이 데이터 세트의 사용을 인용해야 합니다.
인용
인용:
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
이 데이터 세트는 1999~2002년 Landsat 7 ETM+ 및 RADARSAT-1 SAR 이미지에서 파생된 그린란드 빙상의 완전한 15m 해상도 이미지 모자이크를 제공합니다. 이러한 방법에는 이미지 클라우드 마스킹, 팬 샤프닝, 이미지 샘플링 및 크기 조절, 이미지 공동 등록이 포함됩니다. 자세한 내용은 …을 참고하세요.
OSU/GIMP/2000_IMAGERY_MOSAIC,
북극,gimp,그린란드,이미지,nasa,극지방,위성 이미지
[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)"]]
