Esse conjunto de dados fornece máscaras completas de classificação de gelo terrestre e oceano a 15 m para a camada de gelo da Groenlândia.
A cobertura de gelo foi mapeada usando uma combinação de imagens pancromáticas ortorretificadas (banda 8) do Landsat 7 Enhanced Thematic Mapper Plus (ETM+), distribuídas pelo USGS, e imagens de amplitude do radar de abertura sintética (SAR) do RADARSAT-1 produzidas e distribuídas pelo I. Joughin no Laboratório de Física Aplicada da Universidade de Washington.
As imagens do Landsat foram adquiridas nos meses de julho a setembro de 1999, 2000 e 2001 (principalmente 2000), e as imagens do RADARSAT foram adquiridas no outono de 2000.
Bandas
Tamanho do pixel 15 metros
Bandas
Nome
Tamanho do pixel
Descrição
ocean_mask
metros
Máscara de oceano
ice_mask
metros
Máscara de gelo
Tabela de classes ocean_mask
Valor
Cor
Descrição
0
#000000
todos os outros terrenos
1
#0000ff
oceano
Tabela de classes ice_mask
Valor
Cor
Descrição
0
#000000
não é gelo de geleira
1
#ffffff
gelo de geleira
Termos de Uso
Termos de Uso
Como condição para usar esses dados, você precisa citar o uso do conjunto de dados com a citação fornecida.
Citações
Citações:
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-8-1509-2014artigo em PDF
Esse conjunto de dados fornece máscaras completas de classificação de gelo terrestre e oceano a 15 m para a camada de gelo da Groenlândia. A cobertura de gelo foi mapeada usando uma combinação de imagens pancromáticas ortorretificadas (banda 8) do Landsat 7 Enhanced Thematic Mapper Plus (ETM+), distribuídas pelo USGS, e do radar de abertura sintética (SAR) de amplitude sintética do RADARSAT-1…
[null,null,[],[[["\u003cp\u003eThis dataset provides 15m resolution land ice and ocean classification masks for the Greenland ice sheet.\u003c/p\u003e\n"],["\u003cp\u003eIt utilizes Landsat 7 ETM+ and RADARSAT-1 SAR imagery primarily acquired between 1999 and 2001.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset includes two bands: \u003ccode\u003eocean_mask\u003c/code\u003e and \u003ccode\u003eice_mask\u003c/code\u003e, identifying ocean and glacier ice respectively.\u003c/p\u003e\n"],["\u003cp\u003eUsers must cite the provided sources when using this dataset, including the Howat et al.(2014) publication.\u003c/p\u003e\n"]]],["The dataset provides 15-meter resolution land ice and ocean classification masks for the Greenland ice sheet, using Landsat 7 ETM+ imagery from July-September (1999-2001) and RADARSAT-1 SAR imagery from fall 2000. It includes `ocean_mask` (0 for other terrain, 1 for ocean) and `ice_mask` (0 for no glacier ice, 1 for glacier ice). Data is available from June 30, 1999, to September 4, 2002, with provider NASA NSIDC DAAC. Access is provided through Google Earth Engine.\n"],null,["# Greenland Ice & Ocean Mask - Greenland 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/B8X58MQBFUPA)\n\nTags\n:\n [arctic](/earth-engine/datasets/tags/arctic) [cryosphere](/earth-engine/datasets/tags/cryosphere) [gimp](/earth-engine/datasets/tags/gimp) [greenland](/earth-engine/datasets/tags/greenland) [ice](/earth-engine/datasets/tags/ice) [nasa](/earth-engine/datasets/tags/nasa) [polar](/earth-engine/datasets/tags/polar) \nmask \n\n#### Description\n\nThis dataset provides complete land ice and ocean\nclassification masks at 15 m for the Greenland ice sheet.\nIce cover was mapped using\na combination of orthorectified panchromatic (band 8)\nimagery from the Landsat 7 Enhanced Thematic Mapper\nPlus (ETM+), distributed by the USGS, and RADARSAT-1\nSynthetic Amplitude Radar (SAR) amplitude images produced\nand distributed by I. Joughin at the Applied Physics\nLaboratory, University of Washington.\n\nThe Landsat imagery was acquired for the months of July\nthrough September in 1999, 2000 and 2001 (mostly 2000)\nand the RADARSAT imagery was acquired in fall of 2000.\n\n### Bands\n\n\n**Pixel Size**\n\n15 meters\n\n**Bands**\n\n| Name | Pixel Size | Description |\n|--------------|------------|-------------|\n| `ocean_mask` | meters | Ocean mask |\n| `ice_mask` | meters | Ice mask |\n\n**ocean_mask Class Table**\n\n| Value | Color | Description |\n|-------|---------|-------------------|\n| 0 | #000000 | all other terrain |\n| 1 | #0000ff | ocean |\n\n**ice_mask Class Table**\n\n| Value | Color | Description |\n|-------|---------|-----------------|\n| 0 | #000000 | not glacier ice |\n| 1 | #ffffff | glacier ice |\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/B8X58MQBFUPA\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_ICE_OCEAN_MASK');\nvar oceanAndIceMaskVis = {\n min: 0.0,\n max: 1.0,\n bands: ['ice_mask', 'ice_mask', 'ocean_mask'],\n};\nMap.setCenter(-41.0, 74.0, 4);\nMap.addLayer(dataset, oceanAndIceMaskVis, 'Ocean and Ice Mask');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/OSU/OSU_GIMP_2000_ICE_OCEAN_MASK) \n[Greenland Ice \\& Ocean Mask - Greenland Mapping Project (GIMP)](/earth-engine/datasets/catalog/OSU_GIMP_2000_ICE_OCEAN_MASK) \nThis dataset provides complete land ice and ocean classification masks at 15 m for the Greenland ice sheet. Ice cover was mapped using a combination of orthorectified panchromatic (band 8) imagery from the Landsat 7 Enhanced Thematic Mapper Plus (ETM+), distributed by the USGS, and RADARSAT-1 Synthetic Amplitude Radar (SAR) ... \nOSU/GIMP/2000_ICE_OCEAN_MASK, arctic,cryosphere,gimp,greenland,ice,nasa,polar \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/B8X58MQBFUPA](https://doi.org/https://doi.org/10.5067/B8X58MQBFUPA)\n- [https://doi.org/10.5067/B8X58MQBFUPA](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/OSU_GIMP_2000_ICE_OCEAN_MASK)"]]
