Il Reference Elevation Model of Antarctica (REMA) è un modello digitale di superficie (DSM) dell'Antartide ad alta risoluzione e con timestamp, con risoluzioni spaziali di 2 e 8 metri.
I file DEM a strisce corrispondono all'area di sovrapposizione delle strisce di immagini stereoscopiche di input raccolte dalla costellazione di satelliti in orbita polare di DigitalGlobe. Le dimensioni dello strip DEM variano in base
al sensore satellitare che ha acquisito le immagini e all'angolo di raccolta
off-nadir. La maggior parte delle strisce ha una larghezza compresa tra 13 e 17 km e una lunghezza compresa tra 110 e 120 km.
Bande
Dimensioni pixel 8 metri
Bande
Nome
Unità
Dimensioni dei pixel
Descrizione
elevation
m
metri
Elevazione
matchtag
metri
Raster bitmask che indica l'elaborazione dei pixel DEM
Bitmask per matchtag
Bit 0: elaborazione Pixel
0: I pixel sono stati interpolati
1: I pixel derivano da una corrispondenza stereo
Termini e condizioni d'uso
Termini e condizioni d'uso
Le norme della National Science Foundation (la principale fonte di finanziamento del PGC) richiedono
ai ricercatori di riconoscere il sostegno della NSF in tutte le pubblicazioni, le pagine web e
le interviste con i media.
Utilizzando i dati del PGC in Earth Engine, gli utenti accettano di citare il PGC
e la sua sponsorizzazione da parte della NSF. Deve essere attribuita correttamente anche l'origine originale di tutti i dati di terze parti
forniti da PGC.
Il Reference Elevation Model of Antarctica (REMA) è un modello digitale di superficie (DSM) dell'Antartide ad alta risoluzione con timestamp, con risoluzioni spaziali di 2 e 8 metri. I file DEM della striscia corrispondono all'area di sovrapposizione delle strisce della coppia di immagini stereoscopiche di input, così come vengono raccolte dalla costellazione di satelliti in orbita polare di DigitalGlobe. Striscia…
[null,null,[],[[["\u003cp\u003eREMA is a high-resolution Digital Surface Model (DSM) of Antarctica, available at 2-meter and 8-meter resolutions, covering the period from 2009 to 2018.\u003c/p\u003e\n"],["\u003cp\u003eIt is composed of strip DEM files representing the overlapping areas of stereoscopic imagery collected by DigitalGlobe's satellites.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset includes elevation and a matchtag band indicating pixel processing, with strip dimensions varying based on sensor and collection angle.\u003c/p\u003e\n"],["\u003cp\u003eUsers must acknowledge the National Science Foundation (NSF) and PGC when using this data, following the PGC's Acknowledgement Policy.\u003c/p\u003e\n"],["\u003cp\u003eREMA data can be explored and analyzed within Google Earth Engine.\u003c/p\u003e\n"]]],[],null,["# REMA Strips 8m\n\nDataset Availability\n: 2009-01-01T00:00:00Z--2018-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [University of Minnesota Polar Geospatial Center](https://www.pgc.umn.edu/data/arcticdem/)\n\nTags\n:\n[dem](/earth-engine/datasets/tags/dem) [elevation-topography](/earth-engine/datasets/tags/elevation-topography) [geophysical](/earth-engine/datasets/tags/geophysical) [pgc](/earth-engine/datasets/tags/pgc) [rema](/earth-engine/datasets/tags/rema) [umn](/earth-engine/datasets/tags/umn) \n\n#### Description\n\nThe Reference Elevation Model of Antarctica (REMA) is a high resolution,\ntime-stamped Digital Surface Model (DSM) of Antarctica at 2-meter and 8-meter\nspatial resolutions.\n\nStrip DEM files correspond to the overlapping area of the input stereoscopic\nimagery pair strips as they are collected by DigitalGlobe's constellation\nof polar-orbiting satellites. Strip DEM dimensions will vary according to\nthe satellite sensor that acquired the images and the off-nadir angle of\ncollection. Most strips are between 13 km and 17 km in width, and 110 km\nand 120 km in length.\n\n### Bands\n\n\n**Pixel Size**\n\n8 meters\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|-------------|-------|------------|-------------------------------------------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n| `elevation` | m | meters | Elevation |\n| `matchtag` | | meters | Bitmask raster indicating DEM pixels processing |\n| Bitmask for matchtag - Bit 0: Pixel processing - 0: Pixels have been interpolated - 1: Pixels are derived from a stereo match ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n\n### Terms of Use\n\n**Terms of Use**\n\nNational Science Foundation (PGC's primary funding source) policy requires\nresearchers to acknowledge NSF support in all publications, web pages, and\nmedia interviews.\n\nBy using PGC data in Earth Engine, users agree to cite PGC\nand its sponsorship by the NSF. The original source of any third-party data\nsupplied by PGC must also be properly attributed.\n\nFor more information see the PGC's\n[Acknowledgement Policy](https://www.pgc.umn.edu/guides/user-services/acknowledgement-policy/).\n\n### Citations\n\nCitations:\n\n- Howat, I. M., Porter, C., Smith, B. E., Noh, M.-J., and Morin, P.:\n The Reference Elevation Model of Antarctica, The Cryosphere, 13, 665-674, 2019.\n\n### DOIs\n\n- \u003chttps://doi.org/10.5194/tc-13-665-2019\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 collection = ee.ImageCollection('UMN/PGC/REMA/V1/8m');\n\nMap.setCenter(-63.16, -75, 3);\n\nvar elevationVis = {\n bands: ['elevation'],\n min: -50.0,\n max: 1000.0,\n palette: ['0d13d8', '60e1ff', 'ffffff'],\n};\n\nMap.addLayer(collection, elevationVis, 'REMA_DEM_strips_8m');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/UMN/UMN_PGC_REMA_V1_8m) \n[REMA Strips 8m](/earth-engine/datasets/catalog/UMN_PGC_REMA_V1_8m) \nThe Reference Elevation Model of Antarctica (REMA) is a high resolution, time-stamped Digital Surface Model (DSM) of Antarctica at 2-meter and 8-meter spatial resolutions. Strip DEM files correspond to the overlapping area of the input stereoscopic imagery pair strips as they are collected by DigitalGlobe's constellation of polar-orbiting satellites. Strip ... \nUMN/PGC/REMA/V1/8m, dem,elevation-topography,geophysical,pgc,rema,umn \n2009-01-01T00:00:00Z/2018-01-01T00:00:00Z \n-88.3 -180 -53.8 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5194/tc-13-665-2019](https://doi.org/https://www.pgc.umn.edu/data/arcticdem/)\n- [https://doi.org/10.5194/tc-13-665-2019](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/UMN_PGC_REMA_V1_8m)"]]
