Bu, LARSE/GEDI/GEDI02_B_002 içindeki L2B tablolarının geometrilerinden oluşturulan bir özellik koleksiyonudur. Her özellik, kaynak tablonun çokgen ayak izidir. Bu ayak izinde öğe kimliği ve başlangıç/bitiş zaman damgaları bulunur.
Global Ecosystem Dynamics Investigation GEDI (Küresel Ekosistem Dinamikleri Araştırması) misyonu, ekosistem yapısını ve dinamiklerini karakterize ederek Dünya'nın karbon döngüsünün ve biyoçeşitliliğinin ölçülmesini ve anlaşılmasını önemli ölçüde iyileştirmeyi amaçlamaktadır. Uluslararası Uzay İstasyonu'na (ISS) bağlı GEDI cihazı, 51,6° N ve 51,6° S enlemleri arasında küresel olarak veri toplar. Bu veriler, Dünya'nın 3 boyutlu yapısının en yüksek çözünürlükte ve en yoğun örneklemesiyle elde edilir. GEDI cihazı, toplam sekiz ışın yer kesiti oluşturan üç lazerden oluşur. Bu lazerler, yaklaşık 60 metre aralıklarla yerleştirilmiş sekiz adet ~25 m ayak izini anında örnekler.
GEDI L2B Canopy Cover and Vertical Profile Metrics Data Global Footprint
Level - GEDI02_B Dubayah, R., H. Tang, J. Armston, S. Luthcke, M. Hofton,
J. Blair. GEDI L2B Canopy Cover and Vertical Profile Metrics Data Global
Footprint Level V002. 2021, NASA EOSDIS Land Processes DAAC tarafından dağıtılmıştır.
Erişim tarihi: YYYY-AA-GG.
Bu, LARSE/GEDI/GEDI02_B_002 içindeki L2B tablolarının geometrilerinden oluşturulan bir özellik koleksiyonudur. Her özellik, öğe kimliği ve başlangıç/bitiş zaman damgalarıyla birlikte bir kaynak tablonun poligon ayak izidir. Daha fazla bilgi için lütfen Kullanıcı Rehberi'ne bakın. The Global Ecosystem Dynamics Investigation GEDI mission aims to characterize ecosystem structure …
[null,null,[],[[["\u003cp\u003eThis dataset provides a feature collection indexing the geometries of GEDI L2B tables, offering polygon footprints with asset IDs and timestamps.\u003c/p\u003e\n"],["\u003cp\u003eGEDI data is collected by the International Space Station to characterize ecosystem structure and dynamics, focusing on the Earth's carbon cycle and biodiversity.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset covers the period from March 25, 2019, to January 1, 2023, and is globally available between 51.6° N and 51.6° S latitudes.\u003c/p\u003e\n"],["\u003cp\u003eThe data is freely available for research, education, and non-profit use through the Google Earth Engine platform.\u003c/p\u003e\n"],["\u003cp\u003eUsers can access related GEDI products, including L2A and L4A data, through the provided links and table.\u003c/p\u003e\n"]]],[],null,["# GEDI L2B table index\n\nDataset Availability\n: 2019-03-25T00:00:00Z--2024-11-29T00:00:00Z\n\nDataset Provider\n:\n\n\n [Indexing: Google and USFS Laboratory for Applications of Remote Sensing in Ecology (LARSE)](https://www.fs.usda.gov/)\n\n\n [NASA GEDI mission, accessed through the USGS LP DAAC](https://lpdaac.usgs.gov/products/gedi02_av002/)\n\nTags\n:\n[elevation](/earth-engine/datasets/tags/elevation) [forest-biomass](/earth-engine/datasets/tags/forest-biomass) [gedi](/earth-engine/datasets/tags/gedi) [larse](/earth-engine/datasets/tags/larse) [nasa](/earth-engine/datasets/tags/nasa) [table](/earth-engine/datasets/tags/table) [tree-cover](/earth-engine/datasets/tags/tree-cover) [usgs](/earth-engine/datasets/tags/usgs) \n\n#### Description\n\nThis is a feature collection created from the geometries of L2B tables in\n[LARSE/GEDI/GEDI02_B_002](/earth-engine/datasets/catalog/LARSE_GEDI_GEDI02_B_002). Each feature is\na polygon footprint of a source table with its asset id and start/end\ntimestamps.\n\nPlease see [User Guide](https://lpdaac.usgs.gov/documents/986/GEDI02_UserGuide_V2.pdf)\nfor more information.\n\nThe Global Ecosystem Dynamics Investigation [GEDI](https://gedi.umd.edu/)\nmission aims to characterize ecosystem structure and dynamics to enable\nradically improved quantification and understanding of the Earth's carbon cycle\nand biodiversity. The GEDI instrument, attached to the International Space\nStation (ISS), collects data globally between 51.6° N and 51.6° S\nlatitudes at the highest resolution and densest sampling of the\n3-dimensional structure of the Earth. The GEDI instrument consists of three\nlasers producing a total of eight beam ground transects, which instantaneously\nsample eight \\~25 m footprints spaced approximately every 60 m along-track.\n\n| Product | Description |\n|--------------------|---------------------------------------------------------------------------------------------------|\n| L2A Vector | [LARSE/GEDI/GEDI02_A_002](/earth-engine/datasets/catalog/LARSE_GEDI_GEDI02_A_002) |\n| L2A Monthly raster | [LARSE/GEDI/GEDI02_A_002_MONTHLY](/earth-engine/datasets/catalog/LARSE_GEDI_GEDI02_A_002_MONTHLY) |\n| L2A table index | [LARSE/GEDI/GEDI02_A_002_INDEX](/earth-engine/datasets/catalog/LARSE_GEDI_GEDI02_A_002_INDEX) |\n| L2B Vector | [LARSE/GEDI/GEDI02_B_002](/earth-engine/datasets/catalog/LARSE_GEDI_GEDI02_B_002) |\n| L2B Monthly raster | [LARSE/GEDI/GEDI02_B_002_MONTHLY](/earth-engine/datasets/catalog/LARSE_GEDI_GEDI02_B_002_MONTHLY) |\n| L2B table index | [LARSE/GEDI/GEDI02_B_002_INDEX](/earth-engine/datasets/catalog/LARSE_GEDI_GEDI02_B_002_INDEX) |\n| L4A Biomass Vector | [LARSE/GEDI/GEDI04_A_002](/earth-engine/datasets/catalog/LARSE_GEDI_GEDI04_A_002) |\n| L4A Monthly raster | [LARSE/GEDI/GEDI04_A_002_MONTHLY](/earth-engine/datasets/catalog/LARSE_GEDI_GEDI04_A_002_MONTHLY) |\n| L4A table index | [LARSE/GEDI/GEDI04_A_002_INDEX](/earth-engine/datasets/catalog/LARSE_GEDI_GEDI04_A_002_INDEX) |\n| L4B Biomass | [LARSE/GEDI/GEDI04_B_002](/earth-engine/datasets/catalog/LARSE_GEDI_GEDI04_B_002) |\n\n### Table Schema\n\n**Table Schema**\n\n| Name | Type | Description |\n|------------|--------|--------------------------------------------------|\n| table_id | STRING | GEDI L2B table collection Ids |\n| time_start | STRING | GEDI L2B table start time in the ISO 8601 format |\n| time_end | STRING | GEDI L2B table end time in the ISO 8601 format |\n\n### Terms of Use\n\n**Terms of Use**\n\nThis dataset is in the public domain and is available\nwithout restriction on use and distribution. See [NASA's\nEarth Science Data \\& Information Policy](https://www.earthdata.nasa.gov/engage/open-data-services-and-software/data-and-information-policy)\nfor additional information.\n\n### Citations\n\nCitations:\n\n- GEDI L2B Canopy Cover and Vertical Profile Metrics Data Global Footprint\n Level - GEDI02_B Dubayah, R., H. Tang, J. Armston, S. Luthcke, M. Hofton,\n J. Blair. GEDI L2B Canopy Cover and Vertical Profile Metrics Data Global\n Footprint Level V002. 2021, distributed by NASA EOSDIS Land Processes DAAC.\n Accessed YYYY-MM-DD.\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 rectangle = ee.Geometry.Rectangle([\n -111.22, 24.06, -6.54, 51.9\n]);\n// Filter index by date and location\nvar filter_index = ee.FeatureCollection(\n 'LARSE/GEDI/GEDI02_B_002_INDEX').filter(\n 'time_start \u003e \"2020-10-10T15:57:18Z\" && time_end \u003c \"2020-10-11T01:20:45Z\"')\n .filterBounds(rectangle);\n\nMap.addLayer(filter_index);\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/LARSE/LARSE_GEDI_GEDI02_B_002_INDEX) \n[GEDI L2B table index](/earth-engine/datasets/catalog/LARSE_GEDI_GEDI02_B_002_INDEX) \nThis is a feature collection created from the geometries of L2B tables in LARSE/GEDI/GEDI02_B_002. Each feature is a polygon footprint of a source table with its asset id and start/end timestamps. Please see User Guide for more information. The Global Ecosystem Dynamics Investigation GEDI mission aims to characterize ecosystem structure ... \nLARSE/GEDI/GEDI02_B_002_INDEX, elevation,forest-biomass,gedi,larse,nasa,table,tree-cover,usgs \n2019-03-25T00:00:00Z/2024-11-29T00:00:00Z \n-51.6 -180 51.6 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.fs.usda.gov/)\n- [](https://doi.org/https://lpdaac.usgs.gov/products/gedi02_av002/)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/LARSE_GEDI_GEDI02_B_002_INDEX)"]]
